changegroup: replace getchangegroup with makechangegroup

As part of reducing the number of changegroup creation APIs, let's replace
getchangegroup with calls to makechangegroup. This is mostly a drop in
replacement, but it does change the version specifier to be required, so it's
more obvious which callers are creating old version 1 changegroups still.

Differential Revision: https://phab.mercurial-scm.org/D669

mercurial/bundle2.py

@@ -1,1899 +1,1898 b''
 # bundle2.py - generic container format to transmit arbitrary data.
 #
 # Copyright 2013 Facebook, Inc.
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 """Handling of the new bundle2 format
 
 The goal of bundle2 is to act as an atomically packet to transmit a set of
 payloads in an application agnostic way. It consist in a sequence of "parts"
 that will be handed to and processed by the application layer.
 
 
 General format architecture
 ===========================
 
 The format is architectured as follow
 
  - magic string
  - stream level parameters
  - payload parts (any number)
  - end of stream marker.
 
 the Binary format
 ============================
 
 All numbers are unsigned and big-endian.
 
 stream level parameters
 ------------------------
 
 Binary format is as follow
 
 :params size: int32
 
   The total number of Bytes used by the parameters
 
 :params value: arbitrary number of Bytes
 
   A blob of `params size` containing the serialized version of all stream level
   parameters.
 
   The blob contains a space separated list of parameters. Parameters with value
   are stored in the form `<name>=<value>`. Both name and value are urlquoted.
 
   Empty name are obviously forbidden.
 
   Name MUST start with a letter. If this first letter is lower case, the
   parameter is advisory and can be safely ignored. However when the first
   letter is capital, the parameter is mandatory and the bundling process MUST
   stop if he is not able to proceed it.
 
   Stream parameters use a simple textual format for two main reasons:
 
   - Stream level parameters should remain simple and we want to discourage any
     crazy usage.
   - Textual data allow easy human inspection of a bundle2 header in case of
     troubles.
 
   Any Applicative level options MUST go into a bundle2 part instead.
 
 Payload part
 ------------------------
 
 Binary format is as follow
 
 :header size: int32
 
   The total number of Bytes used by the part header. When the header is empty
   (size = 0) this is interpreted as the end of stream marker.
 
 :header:
 
     The header defines how to interpret the part. It contains two piece of
     data: the part type, and the part parameters.
 
     The part type is used to route an application level handler, that can
     interpret payload.
 
     Part parameters are passed to the application level handler.  They are
     meant to convey information that will help the application level object to
     interpret the part payload.
 
     The binary format of the header is has follow
 
     :typesize: (one byte)
 
     :parttype: alphanumerical part name (restricted to [a-zA-Z0-9_:-]*)
 
     :partid: A 32bits integer (unique in the bundle) that can be used to refer
              to this part.
 
     :parameters:
 
         Part's parameter may have arbitrary content, the binary structure is::
 
             <mandatory-count><advisory-count><param-sizes><param-data>
 
         :mandatory-count: 1 byte, number of mandatory parameters
 
         :advisory-count:  1 byte, number of advisory parameters
 
         :param-sizes:
 
             N couple of bytes, where N is the total number of parameters. Each
             couple contains (<size-of-key>, <size-of-value) for one parameter.
 
         :param-data:
 
             A blob of bytes from which each parameter key and value can be
             retrieved using the list of size couples stored in the previous
             field.
 
             Mandatory parameters comes first, then the advisory ones.
 
             Each parameter's key MUST be unique within the part.
 
 :payload:
 
     payload is a series of `<chunksize><chunkdata>`.
 
     `chunksize` is an int32, `chunkdata` are plain bytes (as much as
     `chunksize` says)` The payload part is concluded by a zero size chunk.
 
     The current implementation always produces either zero or one chunk.
     This is an implementation limitation that will ultimately be lifted.
 
     `chunksize` can be negative to trigger special case processing. No such
     processing is in place yet.
 
 Bundle processing
 ============================
 
 Each part is processed in order using a "part handler". Handler are registered
 for a certain part type.
 
 The matching of a part to its handler is case insensitive. The case of the
 part type is used to know if a part is mandatory or advisory. If the Part type
 contains any uppercase char it is considered mandatory. When no handler is
 known for a Mandatory part, the process is aborted and an exception is raised.
 If the part is advisory and no handler is known, the part is ignored. When the
 process is aborted, the full bundle is still read from the stream to keep the
 channel usable. But none of the part read from an abort are processed. In the
 future, dropping the stream may become an option for channel we do not care to
 preserve.
 """
 
 from __future__ import absolute_import, division
 
 import errno
 import re
 import string
 import struct
 import sys
 
 from .i18n import _
 from . import (
     changegroup,
     error,
     obsolete,
     phases,
     pushkey,
     pycompat,
     tags,
     url,
     util,
 )
 
 urlerr = util.urlerr
 urlreq = util.urlreq
 
 _pack = struct.pack
 _unpack = struct.unpack
 
 _fstreamparamsize = '>i'
 _fpartheadersize = '>i'
 _fparttypesize = '>B'
 _fpartid = '>I'
 _fpayloadsize = '>i'
 _fpartparamcount = '>BB'
 
 _fphasesentry = '>i20s'
 
 preferedchunksize = 4096
 
 _parttypeforbidden = re.compile('[^a-zA-Z0-9_:-]')
 
 def outdebug(ui, message):
     """debug regarding output stream (bundling)"""
     if ui.configbool('devel', 'bundle2.debug'):
         ui.debug('bundle2-output: %s\n' % message)
 
 def indebug(ui, message):
     """debug on input stream (unbundling)"""
     if ui.configbool('devel', 'bundle2.debug'):
         ui.debug('bundle2-input: %s\n' % message)
 
 def validateparttype(parttype):
     """raise ValueError if a parttype contains invalid character"""
     if _parttypeforbidden.search(parttype):
         raise ValueError(parttype)
 
 def _makefpartparamsizes(nbparams):
     """return a struct format to read part parameter sizes
 
     The number parameters is variable so we need to build that format
     dynamically.
     """
     return '>'+('BB'*nbparams)
 
 parthandlermapping = {}
 
 def parthandler(parttype, params=()):
     """decorator that register a function as a bundle2 part handler
 
     eg::
 
         @parthandler('myparttype', ('mandatory', 'param', 'handled'))
         def myparttypehandler(...):
             '''process a part of type "my part".'''
             ...
     """
     validateparttype(parttype)
     def _decorator(func):
         lparttype = parttype.lower() # enforce lower case matching.
         assert lparttype not in parthandlermapping
         parthandlermapping[lparttype] = func
         func.params = frozenset(params)
         return func
     return _decorator
 
 class unbundlerecords(object):
     """keep record of what happens during and unbundle
 
     New records are added using `records.add('cat', obj)`. Where 'cat' is a
     category of record and obj is an arbitrary object.
 
     `records['cat']` will return all entries of this category 'cat'.
 
     Iterating on the object itself will yield `('category', obj)` tuples
     for all entries.
 
     All iterations happens in chronological order.
     """
 
     def __init__(self):
         self._categories = {}
         self._sequences = []
         self._replies = {}
 
     def add(self, category, entry, inreplyto=None):
         """add a new record of a given category.
 
         The entry can then be retrieved in the list returned by
         self['category']."""
         self._categories.setdefault(category, []).append(entry)
         self._sequences.append((category, entry))
         if inreplyto is not None:
             self.getreplies(inreplyto).add(category, entry)
 
     def getreplies(self, partid):
         """get the records that are replies to a specific part"""
         return self._replies.setdefault(partid, unbundlerecords())
 
     def __getitem__(self, cat):
         return tuple(self._categories.get(cat, ()))
 
     def __iter__(self):
         return iter(self._sequences)
 
     def __len__(self):
         return len(self._sequences)
 
     def __nonzero__(self):
         return bool(self._sequences)
 
     __bool__ = __nonzero__
 
 class bundleoperation(object):
     """an object that represents a single bundling process
 
     Its purpose is to carry unbundle-related objects and states.
 
     A new object should be created at the beginning of each bundle processing.
     The object is to be returned by the processing function.
 
     The object has very little content now it will ultimately contain:
     * an access to the repo the bundle is applied to,
     * a ui object,
     * a way to retrieve a transaction to add changes to the repo,
     * a way to record the result of processing each part,
     * a way to construct a bundle response when applicable.
     """
 
     def __init__(self, repo, transactiongetter, captureoutput=True):
         self.repo = repo
         self.ui = repo.ui
         self.records = unbundlerecords()
         self.reply = None
         self.captureoutput = captureoutput
         self.hookargs = {}
         self._gettransaction = transactiongetter
 
     def gettransaction(self):
         transaction = self._gettransaction()
 
         if self.hookargs:
             # the ones added to the transaction supercede those added
             # to the operation.
             self.hookargs.update(transaction.hookargs)
             transaction.hookargs = self.hookargs
 
         # mark the hookargs as flushed.  further attempts to add to
         # hookargs will result in an abort.
         self.hookargs = None
 
         return transaction
 
     def addhookargs(self, hookargs):
         if self.hookargs is None:
             raise error.ProgrammingError('attempted to add hookargs to '
                                          'operation after transaction started')
         self.hookargs.update(hookargs)
 
 class TransactionUnavailable(RuntimeError):
     pass
 
 def _notransaction():
     """default method to get a transaction while processing a bundle
 
     Raise an exception to highlight the fact that no transaction was expected
     to be created"""
     raise TransactionUnavailable()
 
 def applybundle(repo, unbundler, tr, source=None, url=None, **kwargs):
     # transform me into unbundler.apply() as soon as the freeze is lifted
     if isinstance(unbundler, unbundle20):
         tr.hookargs['bundle2'] = '1'
         if source is not None and 'source' not in tr.hookargs:
             tr.hookargs['source'] = source
         if url is not None and 'url' not in tr.hookargs:
             tr.hookargs['url'] = url
         return processbundle(repo, unbundler, lambda: tr)
     else:
         # the transactiongetter won't be used, but we might as well set it
         op = bundleoperation(repo, lambda: tr)
         _processchangegroup(op, unbundler, tr, source, url, **kwargs)
         return op
 
 def processbundle(repo, unbundler, transactiongetter=None, op=None):
     """This function process a bundle, apply effect to/from a repo
 
     It iterates over each part then searches for and uses the proper handling
     code to process the part. Parts are processed in order.
 
     Unknown Mandatory part will abort the process.
 
     It is temporarily possible to provide a prebuilt bundleoperation to the
     function. This is used to ensure output is properly propagated in case of
     an error during the unbundling. This output capturing part will likely be
     reworked and this ability will probably go away in the process.
     """
     if op is None:
         if transactiongetter is None:
             transactiongetter = _notransaction
         op = bundleoperation(repo, transactiongetter)
     # todo:
     # - replace this is a init function soon.
     # - exception catching
     unbundler.params
     if repo.ui.debugflag:
         msg = ['bundle2-input-bundle:']
         if unbundler.params:
             msg.append(' %i params' % len(unbundler.params))
         if op._gettransaction is None or op._gettransaction is _notransaction:
             msg.append(' no-transaction')
         else:
             msg.append(' with-transaction')
         msg.append('\n')
         repo.ui.debug(''.join(msg))
     iterparts = enumerate(unbundler.iterparts())
     part = None
     nbpart = 0
     try:
         for nbpart, part in iterparts:
             _processpart(op, part)
     except Exception as exc:
         # Any exceptions seeking to the end of the bundle at this point are
         # almost certainly related to the underlying stream being bad.
         # And, chances are that the exception we're handling is related to
         # getting in that bad state. So, we swallow the seeking error and
         # re-raise the original error.
         seekerror = False
         try:
             for nbpart, part in iterparts:
                 # consume the bundle content
                 part.seek(0, 2)
         except Exception:
             seekerror = True
 
         # Small hack to let caller code distinguish exceptions from bundle2
         # processing from processing the old format. This is mostly
         # needed to handle different return codes to unbundle according to the
         # type of bundle. We should probably clean up or drop this return code
         # craziness in a future version.
         exc.duringunbundle2 = True
         salvaged = []
         replycaps = None
         if op.reply is not None:
             salvaged = op.reply.salvageoutput()
             replycaps = op.reply.capabilities
         exc._replycaps = replycaps
         exc._bundle2salvagedoutput = salvaged
 
         # Re-raising from a variable loses the original stack. So only use
         # that form if we need to.
         if seekerror:
             raise exc
         else:
             raise
     finally:
         repo.ui.debug('bundle2-input-bundle: %i parts total\n' % nbpart)
 
     return op
 
 def _processchangegroup(op, cg, tr, source, url, **kwargs):
     ret = cg.apply(op.repo, tr, source, url, **kwargs)
     op.records.add('changegroup', {
         'return': ret,
     })
     return ret
 
 def _processpart(op, part):
     """process a single part from a bundle
 
     The part is guaranteed to have been fully consumed when the function exits
     (even if an exception is raised)."""
     status = 'unknown' # used by debug output
     hardabort = False
     try:
         try:
             handler = parthandlermapping.get(part.type)
             if handler is None:
                 status = 'unsupported-type'
                 raise error.BundleUnknownFeatureError(parttype=part.type)
             indebug(op.ui, 'found a handler for part %r' % part.type)
             unknownparams = part.mandatorykeys - handler.params
             if unknownparams:
                 unknownparams = list(unknownparams)
                 unknownparams.sort()
                 status = 'unsupported-params (%s)' % unknownparams
                 raise error.BundleUnknownFeatureError(parttype=part.type,
                                                       params=unknownparams)
             status = 'supported'
         except error.BundleUnknownFeatureError as exc:
             if part.mandatory: # mandatory parts
                 raise
             indebug(op.ui, 'ignoring unsupported advisory part %s' % exc)
             return # skip to part processing
         finally:
             if op.ui.debugflag:
                 msg = ['bundle2-input-part: "%s"' % part.type]
                 if not part.mandatory:
                     msg.append(' (advisory)')
                 nbmp = len(part.mandatorykeys)
                 nbap = len(part.params) - nbmp
                 if nbmp or nbap:
                     msg.append(' (params:')
                     if nbmp:
                         msg.append(' %i mandatory' % nbmp)
                     if nbap:
                         msg.append(' %i advisory' % nbmp)
                     msg.append(')')
                 msg.append(' %s\n' % status)
                 op.ui.debug(''.join(msg))
 
         # handler is called outside the above try block so that we don't
         # risk catching KeyErrors from anything other than the
         # parthandlermapping lookup (any KeyError raised by handler()
         # itself represents a defect of a different variety).
         output = None
         if op.captureoutput and op.reply is not None:
             op.ui.pushbuffer(error=True, subproc=True)
             output = ''
         try:
             handler(op, part)
         finally:
             if output is not None:
                 output = op.ui.popbuffer()
             if output:
                 outpart = op.reply.newpart('output', data=output,
                                            mandatory=False)
                 outpart.addparam(
                     'in-reply-to', pycompat.bytestr(part.id), mandatory=False)
     # If exiting or interrupted, do not attempt to seek the stream in the
     # finally block below. This makes abort faster.
     except (SystemExit, KeyboardInterrupt):
         hardabort = True
         raise
     finally:
         # consume the part content to not corrupt the stream.
         if not hardabort:
             part.seek(0, 2)
 
 
 def decodecaps(blob):
     """decode a bundle2 caps bytes blob into a dictionary
 
     The blob is a list of capabilities (one per line)
     Capabilities may have values using a line of the form::
 
         capability=value1,value2,value3
 
     The values are always a list."""
     caps = {}
     for line in blob.splitlines():
         if not line:
             continue
         if '=' not in line:
             key, vals = line, ()
         else:
             key, vals = line.split('=', 1)
             vals = vals.split(',')
         key = urlreq.unquote(key)
         vals = [urlreq.unquote(v) for v in vals]
         caps[key] = vals
     return caps
 
 def encodecaps(caps):
     """encode a bundle2 caps dictionary into a bytes blob"""
     chunks = []
     for ca in sorted(caps):
         vals = caps[ca]
         ca = urlreq.quote(ca)
         vals = [urlreq.quote(v) for v in vals]
         if vals:
             ca = "%s=%s" % (ca, ','.join(vals))
         chunks.append(ca)
     return '\n'.join(chunks)
 
 bundletypes = {
     "": ("", 'UN'),       # only when using unbundle on ssh and old http servers
                           # since the unification ssh accepts a header but there
                           # is no capability signaling it.
     "HG20": (), # special-cased below
     "HG10UN": ("HG10UN", 'UN'),
     "HG10BZ": ("HG10", 'BZ'),
     "HG10GZ": ("HG10GZ", 'GZ'),
 }
 
 # hgweb uses this list to communicate its preferred type
 bundlepriority = ['HG10GZ', 'HG10BZ', 'HG10UN']
 
 class bundle20(object):
     """represent an outgoing bundle2 container
 
     Use the `addparam` method to add stream level parameter. and `newpart` to
     populate it. Then call `getchunks` to retrieve all the binary chunks of
     data that compose the bundle2 container."""
 
     _magicstring = 'HG20'
 
     def __init__(self, ui, capabilities=()):
         self.ui = ui
         self._params = []
         self._parts = []
         self.capabilities = dict(capabilities)
         self._compengine = util.compengines.forbundletype('UN')
         self._compopts = None
 
     def setcompression(self, alg, compopts=None):
         """setup core part compression to <alg>"""
         if alg in (None, 'UN'):
             return
         assert not any(n.lower() == 'compression' for n, v in self._params)
         self.addparam('Compression', alg)
         self._compengine = util.compengines.forbundletype(alg)
         self._compopts = compopts
 
     @property
     def nbparts(self):
         """total number of parts added to the bundler"""
         return len(self._parts)
 
     # methods used to defines the bundle2 content
     def addparam(self, name, value=None):
         """add a stream level parameter"""
         if not name:
             raise ValueError('empty parameter name')
         if name[0] not in pycompat.bytestr(string.ascii_letters):
             raise ValueError('non letter first character: %r' % name)
         self._params.append((name, value))
 
     def addpart(self, part):
         """add a new part to the bundle2 container
 
         Parts contains the actual applicative payload."""
         assert part.id is None
         part.id = len(self._parts) # very cheap counter
         self._parts.append(part)
 
     def newpart(self, typeid, *args, **kwargs):
         """create a new part and add it to the containers
 
         As the part is directly added to the containers. For now, this means
         that any failure to properly initialize the part after calling
         ``newpart`` should result in a failure of the whole bundling process.
 
         You can still fall back to manually create and add if you need better
         control."""
         part = bundlepart(typeid, *args, **kwargs)
         self.addpart(part)
         return part
 
     # methods used to generate the bundle2 stream
     def getchunks(self):
         if self.ui.debugflag:
             msg = ['bundle2-output-bundle: "%s",' % self._magicstring]
             if self._params:
                 msg.append(' (%i params)' % len(self._params))
             msg.append(' %i parts total\n' % len(self._parts))
             self.ui.debug(''.join(msg))
         outdebug(self.ui, 'start emission of %s stream' % self._magicstring)
         yield self._magicstring
         param = self._paramchunk()
         outdebug(self.ui, 'bundle parameter: %s' % param)
         yield _pack(_fstreamparamsize, len(param))
         if param:
             yield param
         for chunk in self._compengine.compressstream(self._getcorechunk(),
                                                      self._compopts):
             yield chunk
 
     def _paramchunk(self):
         """return a encoded version of all stream parameters"""
         blocks = []
         for par, value in self._params:
             par = urlreq.quote(par)
             if value is not None:
                 value = urlreq.quote(value)
                 par = '%s=%s' % (par, value)
             blocks.append(par)
         return ' '.join(blocks)
 
     def _getcorechunk(self):
         """yield chunk for the core part of the bundle
 
         (all but headers and parameters)"""
         outdebug(self.ui, 'start of parts')
         for part in self._parts:
             outdebug(self.ui, 'bundle part: "%s"' % part.type)
             for chunk in part.getchunks(ui=self.ui):
                 yield chunk
         outdebug(self.ui, 'end of bundle')
         yield _pack(_fpartheadersize, 0)
 
 
     def salvageoutput(self):
         """return a list with a copy of all output parts in the bundle
 
         This is meant to be used during error handling to make sure we preserve
         server output"""
         salvaged = []
         for part in self._parts:
             if part.type.startswith('output'):
                 salvaged.append(part.copy())
         return salvaged
 
 
 class unpackermixin(object):
     """A mixin to extract bytes and struct data from a stream"""
 
     def __init__(self, fp):
         self._fp = fp
 
     def _unpack(self, format):
         """unpack this struct format from the stream
 
         This method is meant for internal usage by the bundle2 protocol only.
         They directly manipulate the low level stream including bundle2 level
         instruction.
 
         Do not use it to implement higher-level logic or methods."""
         data = self._readexact(struct.calcsize(format))
         return _unpack(format, data)
 
     def _readexact(self, size):
         """read exactly <size> bytes from the stream
 
         This method is meant for internal usage by the bundle2 protocol only.
         They directly manipulate the low level stream including bundle2 level
         instruction.
 
         Do not use it to implement higher-level logic or methods."""
         return changegroup.readexactly(self._fp, size)
 
 def getunbundler(ui, fp, magicstring=None):
     """return a valid unbundler object for a given magicstring"""
     if magicstring is None:
         magicstring = changegroup.readexactly(fp, 4)
     magic, version = magicstring[0:2], magicstring[2:4]
     if magic != 'HG':
         ui.debug(
             "error: invalid magic: %r (version %r), should be 'HG'\n"
             % (magic, version))
         raise error.Abort(_('not a Mercurial bundle'))
     unbundlerclass = formatmap.get(version)
     if unbundlerclass is None:
         raise error.Abort(_('unknown bundle version %s') % version)
     unbundler = unbundlerclass(ui, fp)
     indebug(ui, 'start processing of %s stream' % magicstring)
     return unbundler
 
 class unbundle20(unpackermixin):
     """interpret a bundle2 stream
 
     This class is fed with a binary stream and yields parts through its
     `iterparts` methods."""
 
     _magicstring = 'HG20'
 
     def __init__(self, ui, fp):
         """If header is specified, we do not read it out of the stream."""
         self.ui = ui
         self._compengine = util.compengines.forbundletype('UN')
         self._compressed = None
         super(unbundle20, self).__init__(fp)
 
     @util.propertycache
     def params(self):
         """dictionary of stream level parameters"""
         indebug(self.ui, 'reading bundle2 stream parameters')
         params = {}
         paramssize = self._unpack(_fstreamparamsize)[0]
         if paramssize < 0:
             raise error.BundleValueError('negative bundle param size: %i'
                                          % paramssize)
         if paramssize:
             params = self._readexact(paramssize)
             params = self._processallparams(params)
         return params
 
     def _processallparams(self, paramsblock):
         """"""
         params = util.sortdict()
         for p in paramsblock.split(' '):
             p = p.split('=', 1)
             p = [urlreq.unquote(i) for i in p]
             if len(p) < 2:
                 p.append(None)
             self._processparam(*p)
             params[p[0]] = p[1]
         return params
 
 
     def _processparam(self, name, value):
         """process a parameter, applying its effect if needed
 
         Parameter starting with a lower case letter are advisory and will be
         ignored when unknown.  Those starting with an upper case letter are
         mandatory and will this function will raise a KeyError when unknown.
 
         Note: no option are currently supported. Any input will be either
               ignored or failing.
         """
         if not name:
             raise ValueError('empty parameter name')
         if name[0] not in pycompat.bytestr(string.ascii_letters):
             raise ValueError('non letter first character: %r' % name)
         try:
             handler = b2streamparamsmap[name.lower()]
         except KeyError:
             if name[0].islower():
                 indebug(self.ui, "ignoring unknown parameter %r" % name)
             else:
                 raise error.BundleUnknownFeatureError(params=(name,))
         else:
             handler(self, name, value)
 
     def _forwardchunks(self):
         """utility to transfer a bundle2 as binary
 
         This is made necessary by the fact the 'getbundle' command over 'ssh'
         have no way to know then the reply end, relying on the bundle to be
         interpreted to know its end. This is terrible and we are sorry, but we
         needed to move forward to get general delta enabled.
         """
         yield self._magicstring
         assert 'params' not in vars(self)
         paramssize = self._unpack(_fstreamparamsize)[0]
         if paramssize < 0:
             raise error.BundleValueError('negative bundle param size: %i'
                                          % paramssize)
         yield _pack(_fstreamparamsize, paramssize)
         if paramssize:
             params = self._readexact(paramssize)
             self._processallparams(params)
             yield params
             assert self._compengine.bundletype == 'UN'
         # From there, payload might need to be decompressed
         self._fp = self._compengine.decompressorreader(self._fp)
         emptycount = 0
         while emptycount < 2:
             # so we can brainlessly loop
             assert _fpartheadersize == _fpayloadsize
             size = self._unpack(_fpartheadersize)[0]
             yield _pack(_fpartheadersize, size)
             if size:
                 emptycount = 0
             else:
                 emptycount += 1
                 continue
             if size == flaginterrupt:
                 continue
             elif size < 0:
                 raise error.BundleValueError('negative chunk size: %i')
             yield self._readexact(size)
 
 
     def iterparts(self):
         """yield all parts contained in the stream"""
         # make sure param have been loaded
         self.params
         # From there, payload need to be decompressed
         self._fp = self._compengine.decompressorreader(self._fp)
         indebug(self.ui, 'start extraction of bundle2 parts')
         headerblock = self._readpartheader()
         while headerblock is not None:
             part = unbundlepart(self.ui, headerblock, self._fp)
             yield part
             # Seek to the end of the part to force it's consumption so the next
             # part can be read. But then seek back to the beginning so the
             # code consuming this generator has a part that starts at 0.
             part.seek(0, 2)
             part.seek(0)
             headerblock = self._readpartheader()
         indebug(self.ui, 'end of bundle2 stream')
 
     def _readpartheader(self):
         """reads a part header size and return the bytes blob
 
         returns None if empty"""
         headersize = self._unpack(_fpartheadersize)[0]
         if headersize < 0:
             raise error.BundleValueError('negative part header size: %i'
                                          % headersize)
         indebug(self.ui, 'part header size: %i' % headersize)
         if headersize:
             return self._readexact(headersize)
         return None
 
     def compressed(self):
         self.params # load params
         return self._compressed
 
     def close(self):
         """close underlying file"""
         if util.safehasattr(self._fp, 'close'):
             return self._fp.close()
 
 formatmap = {'20': unbundle20}
 
 b2streamparamsmap = {}
 
 def b2streamparamhandler(name):
     """register a handler for a stream level parameter"""
     def decorator(func):
         assert name not in formatmap
         b2streamparamsmap[name] = func
         return func
     return decorator
 
 @b2streamparamhandler('compression')
 def processcompression(unbundler, param, value):
     """read compression parameter and install payload decompression"""
     if value not in util.compengines.supportedbundletypes:
         raise error.BundleUnknownFeatureError(params=(param,),
                                               values=(value,))
     unbundler._compengine = util.compengines.forbundletype(value)
     if value is not None:
         unbundler._compressed = True
 
 class bundlepart(object):
     """A bundle2 part contains application level payload
 
     The part `type` is used to route the part to the application level
     handler.
 
     The part payload is contained in ``part.data``. It could be raw bytes or a
     generator of byte chunks.
 
     You can add parameters to the part using the ``addparam`` method.
     Parameters can be either mandatory (default) or advisory. Remote side
     should be able to safely ignore the advisory ones.
 
     Both data and parameters cannot be modified after the generation has begun.
     """
 
     def __init__(self, parttype, mandatoryparams=(), advisoryparams=(),
                  data='', mandatory=True):
         validateparttype(parttype)
         self.id = None
         self.type = parttype
         self._data = data
         self._mandatoryparams = list(mandatoryparams)
         self._advisoryparams = list(advisoryparams)
         # checking for duplicated entries
         self._seenparams = set()
         for pname, __ in self._mandatoryparams + self._advisoryparams:
             if pname in self._seenparams:
                 raise error.ProgrammingError('duplicated params: %s' % pname)
             self._seenparams.add(pname)
         # status of the part's generation:
         # - None: not started,
         # - False: currently generated,
         # - True: generation done.
         self._generated = None
         self.mandatory = mandatory
 
     def __repr__(self):
         cls = "%s.%s" % (self.__class__.__module__, self.__class__.__name__)
         return ('<%s object at %x; id: %s; type: %s; mandatory: %s>'
                 % (cls, id(self), self.id, self.type, self.mandatory))
 
     def copy(self):
         """return a copy of the part
 
         The new part have the very same content but no partid assigned yet.
         Parts with generated data cannot be copied."""
         assert not util.safehasattr(self.data, 'next')
         return self.__class__(self.type, self._mandatoryparams,
                               self._advisoryparams, self._data, self.mandatory)
 
     # methods used to defines the part content
     @property
     def data(self):
         return self._data
 
     @data.setter
     def data(self, data):
         if self._generated is not None:
             raise error.ReadOnlyPartError('part is being generated')
         self._data = data
 
     @property
     def mandatoryparams(self):
         # make it an immutable tuple to force people through ``addparam``
         return tuple(self._mandatoryparams)
 
     @property
     def advisoryparams(self):
         # make it an immutable tuple to force people through ``addparam``
         return tuple(self._advisoryparams)
 
     def addparam(self, name, value='', mandatory=True):
         """add a parameter to the part
 
         If 'mandatory' is set to True, the remote handler must claim support
         for this parameter or the unbundling will be aborted.
 
         The 'name' and 'value' cannot exceed 255 bytes each.
         """
         if self._generated is not None:
             raise error.ReadOnlyPartError('part is being generated')
         if name in self._seenparams:
             raise ValueError('duplicated params: %s' % name)
         self._seenparams.add(name)
         params = self._advisoryparams
         if mandatory:
             params = self._mandatoryparams
         params.append((name, value))
 
     # methods used to generates the bundle2 stream
     def getchunks(self, ui):
         if self._generated is not None:
             raise error.ProgrammingError('part can only be consumed once')
         self._generated = False
 
         if ui.debugflag:
             msg = ['bundle2-output-part: "%s"' % self.type]
             if not self.mandatory:
                 msg.append(' (advisory)')
             nbmp = len(self.mandatoryparams)
             nbap = len(self.advisoryparams)
             if nbmp or nbap:
                 msg.append(' (params:')
                 if nbmp:
                     msg.append(' %i mandatory' % nbmp)
                 if nbap:
                     msg.append(' %i advisory' % nbmp)
                 msg.append(')')
             if not self.data:
                 msg.append(' empty payload')
             elif util.safehasattr(self.data, 'next'):
                 msg.append(' streamed payload')
             else:
                 msg.append(' %i bytes payload' % len(self.data))
             msg.append('\n')
             ui.debug(''.join(msg))
 
         #### header
         if self.mandatory:
             parttype = self.type.upper()
         else:
             parttype = self.type.lower()
         outdebug(ui, 'part %s: "%s"' % (pycompat.bytestr(self.id), parttype))
         ## parttype
         header = [_pack(_fparttypesize, len(parttype)),
                   parttype, _pack(_fpartid, self.id),
                  ]
         ## parameters
         # count
         manpar = self.mandatoryparams
         advpar = self.advisoryparams
         header.append(_pack(_fpartparamcount, len(manpar), len(advpar)))
         # size
         parsizes = []
         for key, value in manpar:
             parsizes.append(len(key))
             parsizes.append(len(value))
         for key, value in advpar:
             parsizes.append(len(key))
             parsizes.append(len(value))
         paramsizes = _pack(_makefpartparamsizes(len(parsizes) // 2), *parsizes)
         header.append(paramsizes)
         # key, value
         for key, value in manpar:
             header.append(key)
             header.append(value)
         for key, value in advpar:
             header.append(key)
             header.append(value)
         ## finalize header
         headerchunk = ''.join(header)
         outdebug(ui, 'header chunk size: %i' % len(headerchunk))
         yield _pack(_fpartheadersize, len(headerchunk))
         yield headerchunk
         ## payload
         try:
             for chunk in self._payloadchunks():
                 outdebug(ui, 'payload chunk size: %i' % len(chunk))
                 yield _pack(_fpayloadsize, len(chunk))
                 yield chunk
         except GeneratorExit:
             # GeneratorExit means that nobody is listening for our
             # results anyway, so just bail quickly rather than trying
             # to produce an error part.
             ui.debug('bundle2-generatorexit\n')
             raise
         except BaseException as exc:
             bexc = util.forcebytestr(exc)
             # backup exception data for later
             ui.debug('bundle2-input-stream-interrupt: encoding exception %s'
                      % bexc)
             tb = sys.exc_info()[2]
             msg = 'unexpected error: %s' % bexc
             interpart = bundlepart('error:abort', [('message', msg)],
                                    mandatory=False)
             interpart.id = 0
             yield _pack(_fpayloadsize, -1)
             for chunk in interpart.getchunks(ui=ui):
                 yield chunk
             outdebug(ui, 'closing payload chunk')
             # abort current part payload
             yield _pack(_fpayloadsize, 0)
             pycompat.raisewithtb(exc, tb)
         # end of payload
         outdebug(ui, 'closing payload chunk')
         yield _pack(_fpayloadsize, 0)
         self._generated = True
 
     def _payloadchunks(self):
         """yield chunks of a the part payload
 
         Exists to handle the different methods to provide data to a part."""
         # we only support fixed size data now.
         # This will be improved in the future.
         if (util.safehasattr(self.data, 'next')
             or util.safehasattr(self.data, '__next__')):
             buff = util.chunkbuffer(self.data)
             chunk = buff.read(preferedchunksize)
             while chunk:
                 yield chunk
                 chunk = buff.read(preferedchunksize)
         elif len(self.data):
             yield self.data
 
 
 flaginterrupt = -1
 
 class interrupthandler(unpackermixin):
     """read one part and process it with restricted capability
 
     This allows to transmit exception raised on the producer size during part
     iteration while the consumer is reading a part.
 
     Part processed in this manner only have access to a ui object,"""
 
     def __init__(self, ui, fp):
         super(interrupthandler, self).__init__(fp)
         self.ui = ui
 
     def _readpartheader(self):
         """reads a part header size and return the bytes blob
 
         returns None if empty"""
         headersize = self._unpack(_fpartheadersize)[0]
         if headersize < 0:
             raise error.BundleValueError('negative part header size: %i'
                                          % headersize)
         indebug(self.ui, 'part header size: %i\n' % headersize)
         if headersize:
             return self._readexact(headersize)
         return None
 
     def __call__(self):
 
         self.ui.debug('bundle2-input-stream-interrupt:'
                       ' opening out of band context\n')
         indebug(self.ui, 'bundle2 stream interruption, looking for a part.')
         headerblock = self._readpartheader()
         if headerblock is None:
             indebug(self.ui, 'no part found during interruption.')
             return
         part = unbundlepart(self.ui, headerblock, self._fp)
         op = interruptoperation(self.ui)
         _processpart(op, part)
         self.ui.debug('bundle2-input-stream-interrupt:'
                       ' closing out of band context\n')
 
 class interruptoperation(object):
     """A limited operation to be use by part handler during interruption
 
     It only have access to an ui object.
     """
 
     def __init__(self, ui):
         self.ui = ui
         self.reply = None
         self.captureoutput = False
 
     @property
     def repo(self):
         raise error.ProgrammingError('no repo access from stream interruption')
 
     def gettransaction(self):
         raise TransactionUnavailable('no repo access from stream interruption')
 
 class unbundlepart(unpackermixin):
     """a bundle part read from a bundle"""
 
     def __init__(self, ui, header, fp):
         super(unbundlepart, self).__init__(fp)
         self._seekable = (util.safehasattr(fp, 'seek') and
                           util.safehasattr(fp, 'tell'))
         self.ui = ui
         # unbundle state attr
         self._headerdata = header
         self._headeroffset = 0
         self._initialized = False
         self.consumed = False
         # part data
         self.id = None
         self.type = None
         self.mandatoryparams = None
         self.advisoryparams = None
         self.params = None
         self.mandatorykeys = ()
         self._payloadstream = None
         self._readheader()
         self._mandatory = None
         self._chunkindex = [] #(payload, file) position tuples for chunk starts
         self._pos = 0
 
     def _fromheader(self, size):
         """return the next <size> byte from the header"""
         offset = self._headeroffset
         data = self._headerdata[offset:(offset + size)]
         self._headeroffset = offset + size
         return data
 
     def _unpackheader(self, format):
         """read given format from header
 
         This automatically compute the size of the format to read."""
         data = self._fromheader(struct.calcsize(format))
         return _unpack(format, data)
 
     def _initparams(self, mandatoryparams, advisoryparams):
         """internal function to setup all logic related parameters"""
         # make it read only to prevent people touching it by mistake.
         self.mandatoryparams = tuple(mandatoryparams)
         self.advisoryparams  = tuple(advisoryparams)
         # user friendly UI
         self.params = util.sortdict(self.mandatoryparams)
         self.params.update(self.advisoryparams)
         self.mandatorykeys = frozenset(p[0] for p in mandatoryparams)
 
     def _payloadchunks(self, chunknum=0):
         '''seek to specified chunk and start yielding data'''
         if len(self._chunkindex) == 0:
             assert chunknum == 0, 'Must start with chunk 0'
             self._chunkindex.append((0, self._tellfp()))
         else:
             assert chunknum < len(self._chunkindex), \
                    'Unknown chunk %d' % chunknum
             self._seekfp(self._chunkindex[chunknum][1])
 
         pos = self._chunkindex[chunknum][0]
         payloadsize = self._unpack(_fpayloadsize)[0]
         indebug(self.ui, 'payload chunk size: %i' % payloadsize)
         while payloadsize:
             if payloadsize == flaginterrupt:
                 # interruption detection, the handler will now read a
                 # single part and process it.
                 interrupthandler(self.ui, self._fp)()
             elif payloadsize < 0:
                 msg = 'negative payload chunk size: %i' %  payloadsize
                 raise error.BundleValueError(msg)
             else:
                 result = self._readexact(payloadsize)
                 chunknum += 1
                 pos += payloadsize
                 if chunknum == len(self._chunkindex):
                     self._chunkindex.append((pos, self._tellfp()))
                 yield result
             payloadsize = self._unpack(_fpayloadsize)[0]
             indebug(self.ui, 'payload chunk size: %i' % payloadsize)
 
     def _findchunk(self, pos):
         '''for a given payload position, return a chunk number and offset'''
         for chunk, (ppos, fpos) in enumerate(self._chunkindex):
             if ppos == pos:
                 return chunk, 0
             elif ppos > pos:
                 return chunk - 1, pos - self._chunkindex[chunk - 1][0]
         raise ValueError('Unknown chunk')
 
     def _readheader(self):
         """read the header and setup the object"""
         typesize = self._unpackheader(_fparttypesize)[0]
         self.type = self._fromheader(typesize)
         indebug(self.ui, 'part type: "%s"' % self.type)
         self.id = self._unpackheader(_fpartid)[0]
         indebug(self.ui, 'part id: "%s"' % pycompat.bytestr(self.id))
         # extract mandatory bit from type
         self.mandatory = (self.type != self.type.lower())
         self.type = self.type.lower()
         ## reading parameters
         # param count
         mancount, advcount = self._unpackheader(_fpartparamcount)
         indebug(self.ui, 'part parameters: %i' % (mancount + advcount))
         # param size
         fparamsizes = _makefpartparamsizes(mancount + advcount)
         paramsizes = self._unpackheader(fparamsizes)
         # make it a list of couple again
         paramsizes = list(zip(paramsizes[::2], paramsizes[1::2]))
         # split mandatory from advisory
         mansizes = paramsizes[:mancount]
         advsizes = paramsizes[mancount:]
         # retrieve param value
         manparams = []
         for key, value in mansizes:
             manparams.append((self._fromheader(key), self._fromheader(value)))
         advparams = []
         for key, value in advsizes:
             advparams.append((self._fromheader(key), self._fromheader(value)))
         self._initparams(manparams, advparams)
         ## part payload
         self._payloadstream = util.chunkbuffer(self._payloadchunks())
         # we read the data, tell it
         self._initialized = True
 
     def read(self, size=None):
         """read payload data"""
         if not self._initialized:
             self._readheader()
         if size is None:
             data = self._payloadstream.read()
         else:
             data = self._payloadstream.read(size)
         self._pos += len(data)
         if size is None or len(data) < size:
             if not self.consumed and self._pos:
                 self.ui.debug('bundle2-input-part: total payload size %i\n'
                               % self._pos)
             self.consumed = True
         return data
 
     def tell(self):
         return self._pos
 
     def seek(self, offset, whence=0):
         if whence == 0:
             newpos = offset
         elif whence == 1:
             newpos = self._pos + offset
         elif whence == 2:
             if not self.consumed:
                 self.read()
             newpos = self._chunkindex[-1][0] - offset
         else:
             raise ValueError('Unknown whence value: %r' % (whence,))
 
         if newpos > self._chunkindex[-1][0] and not self.consumed:
             self.read()
         if not 0 <= newpos <= self._chunkindex[-1][0]:
             raise ValueError('Offset out of range')
 
         if self._pos != newpos:
             chunk, internaloffset = self._findchunk(newpos)
             self._payloadstream = util.chunkbuffer(self._payloadchunks(chunk))
             adjust = self.read(internaloffset)
             if len(adjust) != internaloffset:
                 raise error.Abort(_('Seek failed\n'))
             self._pos = newpos
 
     def _seekfp(self, offset, whence=0):
         """move the underlying file pointer
 
         This method is meant for internal usage by the bundle2 protocol only.
         They directly manipulate the low level stream including bundle2 level
         instruction.
 
         Do not use it to implement higher-level logic or methods."""
         if self._seekable:
             return self._fp.seek(offset, whence)
         else:
             raise NotImplementedError(_('File pointer is not seekable'))
 
     def _tellfp(self):
         """return the file offset, or None if file is not seekable
 
         This method is meant for internal usage by the bundle2 protocol only.
         They directly manipulate the low level stream including bundle2 level
         instruction.
 
         Do not use it to implement higher-level logic or methods."""
         if self._seekable:
             try:
                 return self._fp.tell()
             except IOError as e:
                 if e.errno == errno.ESPIPE:
                     self._seekable = False
                 else:
                     raise
         return None
 
 # These are only the static capabilities.
 # Check the 'getrepocaps' function for the rest.
 capabilities = {'HG20': (),
                 'error': ('abort', 'unsupportedcontent', 'pushraced',
                           'pushkey'),
                 'listkeys': (),
                 'pushkey': (),
                 'digests': tuple(sorted(util.DIGESTS.keys())),
                 'remote-changegroup': ('http', 'https'),
                 'hgtagsfnodes': (),
                }
 
 def getrepocaps(repo, allowpushback=False):
     """return the bundle2 capabilities for a given repo
 
     Exists to allow extensions (like evolution) to mutate the capabilities.
     """
     caps = capabilities.copy()
     caps['changegroup'] = tuple(sorted(
         changegroup.supportedincomingversions(repo)))
     if obsolete.isenabled(repo, obsolete.exchangeopt):
         supportedformat = tuple('V%i' % v for v in obsolete.formats)
         caps['obsmarkers'] = supportedformat
     if allowpushback:
         caps['pushback'] = ()
     cpmode = repo.ui.config('server', 'concurrent-push-mode')
     if cpmode == 'check-related':
         caps['checkheads'] = ('related',)
     return caps
 
 def bundle2caps(remote):
     """return the bundle capabilities of a peer as dict"""
     raw = remote.capable('bundle2')
     if not raw and raw != '':
         return {}
     capsblob = urlreq.unquote(remote.capable('bundle2'))
     return decodecaps(capsblob)
 
 def obsmarkersversion(caps):
     """extract the list of supported obsmarkers versions from a bundle2caps dict
     """
     obscaps = caps.get('obsmarkers', ())
     return [int(c[1:]) for c in obscaps if c.startswith('V')]
 
 def writenewbundle(ui, repo, source, filename, bundletype, outgoing, opts,
                    vfs=None, compression=None, compopts=None):
     if bundletype.startswith('HG10'):
-        cg = changegroup.getchangegroup(repo, source, outgoing, version='01')
+        cg = changegroup.makechangegroup(repo, outgoing, '01', source)
         return writebundle(ui, cg, filename, bundletype, vfs=vfs,
                            compression=compression, compopts=compopts)
     elif not bundletype.startswith('HG20'):
         raise error.ProgrammingError('unknown bundle type: %s' % bundletype)
 
     caps = {}
     if 'obsolescence' in opts:
         caps['obsmarkers'] = ('V1',)
     bundle = bundle20(ui, caps)
     bundle.setcompression(compression, compopts)
     _addpartsfromopts(ui, repo, bundle, source, outgoing, opts)
     chunkiter = bundle.getchunks()
 
     return changegroup.writechunks(ui, chunkiter, filename, vfs=vfs)
 
 def _addpartsfromopts(ui, repo, bundler, source, outgoing, opts):
     # We should eventually reconcile this logic with the one behind
     # 'exchange.getbundle2partsgenerator'.
     #
     # The type of input from 'getbundle' and 'writenewbundle' are a bit
     # different right now. So we keep them separated for now for the sake of
     # simplicity.
 
     # we always want a changegroup in such bundle
     cgversion = opts.get('cg.version')
     if cgversion is None:
         cgversion = changegroup.safeversion(repo)
-    cg = changegroup.getchangegroup(repo, source, outgoing,
-                                    version=cgversion)
+    cg = changegroup.makechangegroup(repo, outgoing, cgversion, source)
     part = bundler.newpart('changegroup', data=cg.getchunks())
     part.addparam('version', cg.version)
     if 'clcount' in cg.extras:
         part.addparam('nbchanges', str(cg.extras['clcount']),
                       mandatory=False)
     if opts.get('phases') and repo.revs('%ln and secret()',
                                         outgoing.missingheads):
         part.addparam('targetphase', '%d' % phases.secret, mandatory=False)
 
     addparttagsfnodescache(repo, bundler, outgoing)
 
     if opts.get('obsolescence', False):
         obsmarkers = repo.obsstore.relevantmarkers(outgoing.missing)
         buildobsmarkerspart(bundler, obsmarkers)
 
     if opts.get('phases', False):
         headsbyphase = phases.subsetphaseheads(repo, outgoing.missing)
         phasedata = []
         for phase in phases.allphases:
             for head in headsbyphase[phase]:
                 phasedata.append(_pack(_fphasesentry, phase, head))
         bundler.newpart('phase-heads', data=''.join(phasedata))
 
 def addparttagsfnodescache(repo, bundler, outgoing):
     # we include the tags fnode cache for the bundle changeset
     # (as an optional parts)
     cache = tags.hgtagsfnodescache(repo.unfiltered())
     chunks = []
 
     # .hgtags fnodes are only relevant for head changesets. While we could
     # transfer values for all known nodes, there will likely be little to
     # no benefit.
     #
     # We don't bother using a generator to produce output data because
     # a) we only have 40 bytes per head and even esoteric numbers of heads
     # consume little memory (1M heads is 40MB) b) we don't want to send the
     # part if we don't have entries and knowing if we have entries requires
     # cache lookups.
     for node in outgoing.missingheads:
         # Don't compute missing, as this may slow down serving.
         fnode = cache.getfnode(node, computemissing=False)
         if fnode is not None:
             chunks.extend([node, fnode])
 
     if chunks:
         bundler.newpart('hgtagsfnodes', data=''.join(chunks))
 
 def buildobsmarkerspart(bundler, markers):
     """add an obsmarker part to the bundler with <markers>
 
     No part is created if markers is empty.
     Raises ValueError if the bundler doesn't support any known obsmarker format.
     """
     if not markers:
         return None
 
     remoteversions = obsmarkersversion(bundler.capabilities)
     version = obsolete.commonversion(remoteversions)
     if version is None:
         raise ValueError('bundler does not support common obsmarker format')
     stream = obsolete.encodemarkers(markers, True, version=version)
     return bundler.newpart('obsmarkers', data=stream)
 
 def writebundle(ui, cg, filename, bundletype, vfs=None, compression=None,
                 compopts=None):
     """Write a bundle file and return its filename.
 
     Existing files will not be overwritten.
     If no filename is specified, a temporary file is created.
     bz2 compression can be turned off.
     The bundle file will be deleted in case of errors.
     """
 
     if bundletype == "HG20":
         bundle = bundle20(ui)
         bundle.setcompression(compression, compopts)
         part = bundle.newpart('changegroup', data=cg.getchunks())
         part.addparam('version', cg.version)
         if 'clcount' in cg.extras:
             part.addparam('nbchanges', str(cg.extras['clcount']),
                           mandatory=False)
         chunkiter = bundle.getchunks()
     else:
         # compression argument is only for the bundle2 case
         assert compression is None
         if cg.version != '01':
             raise error.Abort(_('old bundle types only supports v1 '
                                 'changegroups'))
         header, comp = bundletypes[bundletype]
         if comp not in util.compengines.supportedbundletypes:
             raise error.Abort(_('unknown stream compression type: %s')
                               % comp)
         compengine = util.compengines.forbundletype(comp)
         def chunkiter():
             yield header
             for chunk in compengine.compressstream(cg.getchunks(), compopts):
                 yield chunk
         chunkiter = chunkiter()
 
     # parse the changegroup data, otherwise we will block
     # in case of sshrepo because we don't know the end of the stream
     return changegroup.writechunks(ui, chunkiter, filename, vfs=vfs)
 
 def combinechangegroupresults(op):
     """logic to combine 0 or more addchangegroup results into one"""
     results = [r.get('return', 0)
                for r in op.records['changegroup']]
     changedheads = 0
     result = 1
     for ret in results:
         # If any changegroup result is 0, return 0
         if ret == 0:
             result = 0
             break
         if ret < -1:
             changedheads += ret + 1
         elif ret > 1:
             changedheads += ret - 1
     if changedheads > 0:
         result = 1 + changedheads
     elif changedheads < 0:
         result = -1 + changedheads
     return result
 
 @parthandler('changegroup', ('version', 'nbchanges', 'treemanifest',
                              'targetphase'))
 def handlechangegroup(op, inpart):
     """apply a changegroup part on the repo
 
     This is a very early implementation that will massive rework before being
     inflicted to any end-user.
     """
     tr = op.gettransaction()
     unpackerversion = inpart.params.get('version', '01')
     # We should raise an appropriate exception here
     cg = changegroup.getunbundler(unpackerversion, inpart, None)
     # the source and url passed here are overwritten by the one contained in
     # the transaction.hookargs argument. So 'bundle2' is a placeholder
     nbchangesets = None
     if 'nbchanges' in inpart.params:
         nbchangesets = int(inpart.params.get('nbchanges'))
     if ('treemanifest' in inpart.params and
         'treemanifest' not in op.repo.requirements):
         if len(op.repo.changelog) != 0:
             raise error.Abort(_(
                 "bundle contains tree manifests, but local repo is "
                 "non-empty and does not use tree manifests"))
         op.repo.requirements.add('treemanifest')
         op.repo._applyopenerreqs()
         op.repo._writerequirements()
     extrakwargs = {}
     targetphase = inpart.params.get('targetphase')
     if targetphase is not None:
         extrakwargs['targetphase'] = int(targetphase)
     ret = _processchangegroup(op, cg, tr, 'bundle2', 'bundle2',
                               expectedtotal=nbchangesets, **extrakwargs)
     if op.reply is not None:
         # This is definitely not the final form of this
         # return. But one need to start somewhere.
         part = op.reply.newpart('reply:changegroup', mandatory=False)
         part.addparam(
             'in-reply-to', pycompat.bytestr(inpart.id), mandatory=False)
         part.addparam('return', '%i' % ret, mandatory=False)
     assert not inpart.read()
 
 _remotechangegroupparams = tuple(['url', 'size', 'digests'] +
     ['digest:%s' % k for k in util.DIGESTS.keys()])
 @parthandler('remote-changegroup', _remotechangegroupparams)
 def handleremotechangegroup(op, inpart):
     """apply a bundle10 on the repo, given an url and validation information
 
     All the information about the remote bundle to import are given as
     parameters. The parameters include:
       - url: the url to the bundle10.
       - size: the bundle10 file size. It is used to validate what was
         retrieved by the client matches the server knowledge about the bundle.
       - digests: a space separated list of the digest types provided as
         parameters.
       - digest:<digest-type>: the hexadecimal representation of the digest with
         that name. Like the size, it is used to validate what was retrieved by
         the client matches what the server knows about the bundle.
 
     When multiple digest types are given, all of them are checked.
     """
     try:
         raw_url = inpart.params['url']
     except KeyError:
         raise error.Abort(_('remote-changegroup: missing "%s" param') % 'url')
     parsed_url = util.url(raw_url)
     if parsed_url.scheme not in capabilities['remote-changegroup']:
         raise error.Abort(_('remote-changegroup does not support %s urls') %
             parsed_url.scheme)
 
     try:
         size = int(inpart.params['size'])
     except ValueError:
         raise error.Abort(_('remote-changegroup: invalid value for param "%s"')
             % 'size')
     except KeyError:
         raise error.Abort(_('remote-changegroup: missing "%s" param') % 'size')
 
     digests = {}
     for typ in inpart.params.get('digests', '').split():
         param = 'digest:%s' % typ
         try:
             value = inpart.params[param]
         except KeyError:
             raise error.Abort(_('remote-changegroup: missing "%s" param') %
                 param)
         digests[typ] = value
 
     real_part = util.digestchecker(url.open(op.ui, raw_url), size, digests)
 
     tr = op.gettransaction()
     from . import exchange
     cg = exchange.readbundle(op.repo.ui, real_part, raw_url)
     if not isinstance(cg, changegroup.cg1unpacker):
         raise error.Abort(_('%s: not a bundle version 1.0') %
             util.hidepassword(raw_url))
     ret = _processchangegroup(op, cg, tr, 'bundle2', 'bundle2')
     if op.reply is not None:
         # This is definitely not the final form of this
         # return. But one need to start somewhere.
         part = op.reply.newpart('reply:changegroup')
         part.addparam(
             'in-reply-to', pycompat.bytestr(inpart.id), mandatory=False)
         part.addparam('return', '%i' % ret, mandatory=False)
     try:
         real_part.validate()
     except error.Abort as e:
         raise error.Abort(_('bundle at %s is corrupted:\n%s') %
             (util.hidepassword(raw_url), str(e)))
     assert not inpart.read()
 
 @parthandler('reply:changegroup', ('return', 'in-reply-to'))
 def handlereplychangegroup(op, inpart):
     ret = int(inpart.params['return'])
     replyto = int(inpart.params['in-reply-to'])
     op.records.add('changegroup', {'return': ret}, replyto)
 
 @parthandler('check:heads')
 def handlecheckheads(op, inpart):
     """check that head of the repo did not change
 
     This is used to detect a push race when using unbundle.
     This replaces the "heads" argument of unbundle."""
     h = inpart.read(20)
     heads = []
     while len(h) == 20:
         heads.append(h)
         h = inpart.read(20)
     assert not h
     # Trigger a transaction so that we are guaranteed to have the lock now.
     if op.ui.configbool('experimental', 'bundle2lazylocking'):
         op.gettransaction()
     if sorted(heads) != sorted(op.repo.heads()):
         raise error.PushRaced('repository changed while pushing - '
                               'please try again')
 
 @parthandler('check:updated-heads')
 def handlecheckupdatedheads(op, inpart):
     """check for race on the heads touched by a push
 
     This is similar to 'check:heads' but focus on the heads actually updated
     during the push. If other activities happen on unrelated heads, it is
     ignored.
 
     This allow server with high traffic to avoid push contention as long as
     unrelated parts of the graph are involved."""
     h = inpart.read(20)
     heads = []
     while len(h) == 20:
         heads.append(h)
         h = inpart.read(20)
     assert not h
     # trigger a transaction so that we are guaranteed to have the lock now.
     if op.ui.configbool('experimental', 'bundle2lazylocking'):
         op.gettransaction()
 
     currentheads = set()
     for ls in op.repo.branchmap().itervalues():
         currentheads.update(ls)
 
     for h in heads:
         if h not in currentheads:
             raise error.PushRaced('repository changed while pushing - '
                                   'please try again')
 
 @parthandler('output')
 def handleoutput(op, inpart):
     """forward output captured on the server to the client"""
     for line in inpart.read().splitlines():
         op.ui.status(_('remote: %s\n') % line)
 
 @parthandler('replycaps')
 def handlereplycaps(op, inpart):
     """Notify that a reply bundle should be created
 
     The payload contains the capabilities information for the reply"""
     caps = decodecaps(inpart.read())
     if op.reply is None:
         op.reply = bundle20(op.ui, caps)
 
 class AbortFromPart(error.Abort):
     """Sub-class of Abort that denotes an error from a bundle2 part."""
 
 @parthandler('error:abort', ('message', 'hint'))
 def handleerrorabort(op, inpart):
     """Used to transmit abort error over the wire"""
     raise AbortFromPart(inpart.params['message'],
                         hint=inpart.params.get('hint'))
 
 @parthandler('error:pushkey', ('namespace', 'key', 'new', 'old', 'ret',
                                'in-reply-to'))
 def handleerrorpushkey(op, inpart):
     """Used to transmit failure of a mandatory pushkey over the wire"""
     kwargs = {}
     for name in ('namespace', 'key', 'new', 'old', 'ret'):
         value = inpart.params.get(name)
         if value is not None:
             kwargs[name] = value
     raise error.PushkeyFailed(inpart.params['in-reply-to'], **kwargs)
 
 @parthandler('error:unsupportedcontent', ('parttype', 'params'))
 def handleerrorunsupportedcontent(op, inpart):
     """Used to transmit unknown content error over the wire"""
     kwargs = {}
     parttype = inpart.params.get('parttype')
     if parttype is not None:
         kwargs['parttype'] = parttype
     params = inpart.params.get('params')
     if params is not None:
         kwargs['params'] = params.split('\0')
 
     raise error.BundleUnknownFeatureError(**kwargs)
 
 @parthandler('error:pushraced', ('message',))
 def handleerrorpushraced(op, inpart):
     """Used to transmit push race error over the wire"""
     raise error.ResponseError(_('push failed:'), inpart.params['message'])
 
 @parthandler('listkeys', ('namespace',))
 def handlelistkeys(op, inpart):
     """retrieve pushkey namespace content stored in a bundle2"""
     namespace = inpart.params['namespace']
     r = pushkey.decodekeys(inpart.read())
     op.records.add('listkeys', (namespace, r))
 
 @parthandler('pushkey', ('namespace', 'key', 'old', 'new'))
 def handlepushkey(op, inpart):
     """process a pushkey request"""
     dec = pushkey.decode
     namespace = dec(inpart.params['namespace'])
     key = dec(inpart.params['key'])
     old = dec(inpart.params['old'])
     new = dec(inpart.params['new'])
     # Grab the transaction to ensure that we have the lock before performing the
     # pushkey.
     if op.ui.configbool('experimental', 'bundle2lazylocking'):
         op.gettransaction()
     ret = op.repo.pushkey(namespace, key, old, new)
     record = {'namespace': namespace,
               'key': key,
               'old': old,
               'new': new}
     op.records.add('pushkey', record)
     if op.reply is not None:
         rpart = op.reply.newpart('reply:pushkey')
         rpart.addparam(
             'in-reply-to', pycompat.bytestr(inpart.id), mandatory=False)
         rpart.addparam('return', '%i' % ret, mandatory=False)
     if inpart.mandatory and not ret:
         kwargs = {}
         for key in ('namespace', 'key', 'new', 'old', 'ret'):
             if key in inpart.params:
                 kwargs[key] = inpart.params[key]
         raise error.PushkeyFailed(partid=str(inpart.id), **kwargs)
 
 def _readphaseheads(inpart):
     headsbyphase = [[] for i in phases.allphases]
     entrysize = struct.calcsize(_fphasesentry)
     while True:
         entry = inpart.read(entrysize)
         if len(entry) < entrysize:
             if entry:
                 raise error.Abort(_('bad phase-heads bundle part'))
             break
         phase, node = struct.unpack(_fphasesentry, entry)
         headsbyphase[phase].append(node)
     return headsbyphase
 
 @parthandler('phase-heads')
 def handlephases(op, inpart):
     """apply phases from bundle part to repo"""
     headsbyphase = _readphaseheads(inpart)
     phases.updatephases(op.repo.unfiltered(), op.gettransaction(), headsbyphase)
     op.records.add('phase-heads', {})
 
 @parthandler('reply:pushkey', ('return', 'in-reply-to'))
 def handlepushkeyreply(op, inpart):
     """retrieve the result of a pushkey request"""
     ret = int(inpart.params['return'])
     partid = int(inpart.params['in-reply-to'])
     op.records.add('pushkey', {'return': ret}, partid)
 
 @parthandler('obsmarkers')
 def handleobsmarker(op, inpart):
     """add a stream of obsmarkers to the repo"""
     tr = op.gettransaction()
     markerdata = inpart.read()
     if op.ui.config('experimental', 'obsmarkers-exchange-debug'):
         op.ui.write(('obsmarker-exchange: %i bytes received\n')
                     % len(markerdata))
     # The mergemarkers call will crash if marker creation is not enabled.
     # we want to avoid this if the part is advisory.
     if not inpart.mandatory and op.repo.obsstore.readonly:
         op.repo.ui.debug('ignoring obsolescence markers, feature not enabled')
         return
     new = op.repo.obsstore.mergemarkers(tr, markerdata)
     op.repo.invalidatevolatilesets()
     if new:
         op.repo.ui.status(_('%i new obsolescence markers\n') % new)
     op.records.add('obsmarkers', {'new': new})
     if op.reply is not None:
         rpart = op.reply.newpart('reply:obsmarkers')
         rpart.addparam(
             'in-reply-to', pycompat.bytestr(inpart.id), mandatory=False)
         rpart.addparam('new', '%i' % new, mandatory=False)
 
 
 @parthandler('reply:obsmarkers', ('new', 'in-reply-to'))
 def handleobsmarkerreply(op, inpart):
     """retrieve the result of a pushkey request"""
     ret = int(inpart.params['new'])
     partid = int(inpart.params['in-reply-to'])
     op.records.add('obsmarkers', {'new': ret}, partid)
 
 @parthandler('hgtagsfnodes')
 def handlehgtagsfnodes(op, inpart):
     """Applies .hgtags fnodes cache entries to the local repo.
 
     Payload is pairs of 20 byte changeset nodes and filenodes.
     """
     # Grab the transaction so we ensure that we have the lock at this point.
     if op.ui.configbool('experimental', 'bundle2lazylocking'):
         op.gettransaction()
     cache = tags.hgtagsfnodescache(op.repo.unfiltered())
 
     count = 0
     while True:
         node = inpart.read(20)
         fnode = inpart.read(20)
         if len(node) < 20 or len(fnode) < 20:
             op.ui.debug('ignoring incomplete received .hgtags fnodes data\n')
             break
         cache.setfnode(node, fnode)
         count += 1
 
     cache.write()
     op.ui.debug('applied %i hgtags fnodes cache entries\n' % count)
 
 @parthandler('pushvars')
 def bundle2getvars(op, part):
     '''unbundle a bundle2 containing shellvars on the server'''
     # An option to disable unbundling on server-side for security reasons
     if op.ui.configbool('push', 'pushvars.server'):
         hookargs = {}
         for key, value in part.advisoryparams:
             key = key.upper()
             # We want pushed variables to have USERVAR_ prepended so we know
             # they came from the --pushvar flag.
             key = "USERVAR_" + key
             hookargs[key] = value
         op.addhookargs(hookargs)

mercurial/changegroup.py

@@ -1,993 +1,982 b''
 # changegroup.py - Mercurial changegroup manipulation functions
 #
 #  Copyright 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import os
 import struct
 import tempfile
 import weakref
 
 from .i18n import _
 from .node import (
     hex,
     nullrev,
     short,
 )
 
 from . import (
     dagutil,
     error,
     mdiff,
     phases,
     pycompat,
     util,
 )
 
 _CHANGEGROUPV1_DELTA_HEADER = "20s20s20s20s"
 _CHANGEGROUPV2_DELTA_HEADER = "20s20s20s20s20s"
 _CHANGEGROUPV3_DELTA_HEADER = ">20s20s20s20s20sH"
 
 def readexactly(stream, n):
     '''read n bytes from stream.read and abort if less was available'''
     s = stream.read(n)
     if len(s) < n:
         raise error.Abort(_("stream ended unexpectedly"
                            " (got %d bytes, expected %d)")
                           % (len(s), n))
     return s
 
 def getchunk(stream):
     """return the next chunk from stream as a string"""
     d = readexactly(stream, 4)
     l = struct.unpack(">l", d)[0]
     if l <= 4:
         if l:
             raise error.Abort(_("invalid chunk length %d") % l)
         return ""
     return readexactly(stream, l - 4)
 
 def chunkheader(length):
     """return a changegroup chunk header (string)"""
     return struct.pack(">l", length + 4)
 
 def closechunk():
     """return a changegroup chunk header (string) for a zero-length chunk"""
     return struct.pack(">l", 0)
 
 def writechunks(ui, chunks, filename, vfs=None):
     """Write chunks to a file and return its filename.
 
     The stream is assumed to be a bundle file.
     Existing files will not be overwritten.
     If no filename is specified, a temporary file is created.
     """
     fh = None
     cleanup = None
     try:
         if filename:
             if vfs:
                 fh = vfs.open(filename, "wb")
             else:
                 # Increase default buffer size because default is usually
                 # small (4k is common on Linux).
                 fh = open(filename, "wb", 131072)
         else:
             fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg")
             fh = os.fdopen(fd, pycompat.sysstr("wb"))
         cleanup = filename
         for c in chunks:
             fh.write(c)
         cleanup = None
         return filename
     finally:
         if fh is not None:
             fh.close()
         if cleanup is not None:
             if filename and vfs:
                 vfs.unlink(cleanup)
             else:
                 os.unlink(cleanup)
 
 class cg1unpacker(object):
     """Unpacker for cg1 changegroup streams.
 
     A changegroup unpacker handles the framing of the revision data in
     the wire format. Most consumers will want to use the apply()
     method to add the changes from the changegroup to a repository.
 
     If you're forwarding a changegroup unmodified to another consumer,
     use getchunks(), which returns an iterator of changegroup
     chunks. This is mostly useful for cases where you need to know the
     data stream has ended by observing the end of the changegroup.
 
     deltachunk() is useful only if you're applying delta data. Most
     consumers should prefer apply() instead.
 
     A few other public methods exist. Those are used only for
     bundlerepo and some debug commands - their use is discouraged.
     """
     deltaheader = _CHANGEGROUPV1_DELTA_HEADER
     deltaheadersize = struct.calcsize(deltaheader)
     version = '01'
     _grouplistcount = 1 # One list of files after the manifests
 
     def __init__(self, fh, alg, extras=None):
         if alg is None:
             alg = 'UN'
         if alg not in util.compengines.supportedbundletypes:
             raise error.Abort(_('unknown stream compression type: %s')
                              % alg)
         if alg == 'BZ':
             alg = '_truncatedBZ'
 
         compengine = util.compengines.forbundletype(alg)
         self._stream = compengine.decompressorreader(fh)
         self._type = alg
         self.extras = extras or {}
         self.callback = None
 
     # These methods (compressed, read, seek, tell) all appear to only
     # be used by bundlerepo, but it's a little hard to tell.
     def compressed(self):
         return self._type is not None and self._type != 'UN'
     def read(self, l):
         return self._stream.read(l)
     def seek(self, pos):
         return self._stream.seek(pos)
     def tell(self):
         return self._stream.tell()
     def close(self):
         return self._stream.close()
 
     def _chunklength(self):
         d = readexactly(self._stream, 4)
         l = struct.unpack(">l", d)[0]
         if l <= 4:
             if l:
                 raise error.Abort(_("invalid chunk length %d") % l)
             return 0
         if self.callback:
             self.callback()
         return l - 4
 
     def changelogheader(self):
         """v10 does not have a changelog header chunk"""
         return {}
 
     def manifestheader(self):
         """v10 does not have a manifest header chunk"""
         return {}
 
     def filelogheader(self):
         """return the header of the filelogs chunk, v10 only has the filename"""
         l = self._chunklength()
         if not l:
             return {}
         fname = readexactly(self._stream, l)
         return {'filename': fname}
 
     def _deltaheader(self, headertuple, prevnode):
         node, p1, p2, cs = headertuple
         if prevnode is None:
             deltabase = p1
         else:
             deltabase = prevnode
         flags = 0
         return node, p1, p2, deltabase, cs, flags
 
     def deltachunk(self, prevnode):
         l = self._chunklength()
         if not l:
             return {}
         headerdata = readexactly(self._stream, self.deltaheadersize)
         header = struct.unpack(self.deltaheader, headerdata)
         delta = readexactly(self._stream, l - self.deltaheadersize)
         node, p1, p2, deltabase, cs, flags = self._deltaheader(header, prevnode)
         return {'node': node, 'p1': p1, 'p2': p2, 'cs': cs,
                 'deltabase': deltabase, 'delta': delta, 'flags': flags}
 
     def getchunks(self):
         """returns all the chunks contains in the bundle
 
         Used when you need to forward the binary stream to a file or another
         network API. To do so, it parse the changegroup data, otherwise it will
         block in case of sshrepo because it don't know the end of the stream.
         """
         # For changegroup 1 and 2, we expect 3 parts: changelog, manifestlog,
         # and a list of filelogs. For changegroup 3, we expect 4 parts:
         # changelog, manifestlog, a list of tree manifestlogs, and a list of
         # filelogs.
         #
         # Changelog and manifestlog parts are terminated with empty chunks. The
         # tree and file parts are a list of entry sections. Each entry section
         # is a series of chunks terminating in an empty chunk. The list of these
         # entry sections is terminated in yet another empty chunk, so we know
         # we've reached the end of the tree/file list when we reach an empty
         # chunk that was proceeded by no non-empty chunks.
 
         parts = 0
         while parts < 2 + self._grouplistcount:
             noentries = True
             while True:
                 chunk = getchunk(self)
                 if not chunk:
                     # The first two empty chunks represent the end of the
                     # changelog and the manifestlog portions. The remaining
                     # empty chunks represent either A) the end of individual
                     # tree or file entries in the file list, or B) the end of
                     # the entire list. It's the end of the entire list if there
                     # were no entries (i.e. noentries is True).
                     if parts < 2:
                         parts += 1
                     elif noentries:
                         parts += 1
                     break
                 noentries = False
                 yield chunkheader(len(chunk))
                 pos = 0
                 while pos < len(chunk):
                     next = pos + 2**20
                     yield chunk[pos:next]
                     pos = next
             yield closechunk()
 
     def _unpackmanifests(self, repo, revmap, trp, prog, numchanges):
         # We know that we'll never have more manifests than we had
         # changesets.
         self.callback = prog(_('manifests'), numchanges)
         # no need to check for empty manifest group here:
         # if the result of the merge of 1 and 2 is the same in 3 and 4,
         # no new manifest will be created and the manifest group will
         # be empty during the pull
         self.manifestheader()
         repo.manifestlog._revlog.addgroup(self, revmap, trp)
         repo.ui.progress(_('manifests'), None)
         self.callback = None
 
     def apply(self, repo, tr, srctype, url, targetphase=phases.draft,
               expectedtotal=None):
         """Add the changegroup returned by source.read() to this repo.
         srctype is a string like 'push', 'pull', or 'unbundle'.  url is
         the URL of the repo where this changegroup is coming from.
 
         Return an integer summarizing the change to this repo:
         - nothing changed or no source: 0
         - more heads than before: 1+added heads (2..n)
         - fewer heads than before: -1-removed heads (-2..-n)
         - number of heads stays the same: 1
         """
         repo = repo.unfiltered()
         def csmap(x):
             repo.ui.debug("add changeset %s\n" % short(x))
             return len(cl)
 
         def revmap(x):
             return cl.rev(x)
 
         changesets = files = revisions = 0
 
         try:
             # The transaction may already carry source information. In this
             # case we use the top level data. We overwrite the argument
             # because we need to use the top level value (if they exist)
             # in this function.
             srctype = tr.hookargs.setdefault('source', srctype)
             url = tr.hookargs.setdefault('url', url)
             repo.hook('prechangegroup',
                       throw=True, **pycompat.strkwargs(tr.hookargs))
 
             # write changelog data to temp files so concurrent readers
             # will not see an inconsistent view
             cl = repo.changelog
             cl.delayupdate(tr)
             oldheads = set(cl.heads())
 
             trp = weakref.proxy(tr)
             # pull off the changeset group
             repo.ui.status(_("adding changesets\n"))
             clstart = len(cl)
             class prog(object):
                 def __init__(self, step, total):
                     self._step = step
                     self._total = total
                     self._count = 1
                 def __call__(self):
                     repo.ui.progress(self._step, self._count, unit=_('chunks'),
                                      total=self._total)
                     self._count += 1
             self.callback = prog(_('changesets'), expectedtotal)
 
             efiles = set()
             def onchangelog(cl, node):
                 efiles.update(cl.readfiles(node))
 
             self.changelogheader()
             cgnodes = cl.addgroup(self, csmap, trp, addrevisioncb=onchangelog)
             efiles = len(efiles)
 
             if not cgnodes:
                 repo.ui.develwarn('applied empty changegroup',
                                   config='empty-changegroup')
             clend = len(cl)
             changesets = clend - clstart
             repo.ui.progress(_('changesets'), None)
             self.callback = None
 
             # pull off the manifest group
             repo.ui.status(_("adding manifests\n"))
             self._unpackmanifests(repo, revmap, trp, prog, changesets)
 
             needfiles = {}
             if repo.ui.configbool('server', 'validate'):
                 cl = repo.changelog
                 ml = repo.manifestlog
                 # validate incoming csets have their manifests
                 for cset in xrange(clstart, clend):
                     mfnode = cl.changelogrevision(cset).manifest
                     mfest = ml[mfnode].readdelta()
                     # store file cgnodes we must see
                     for f, n in mfest.iteritems():
                         needfiles.setdefault(f, set()).add(n)
 
             # process the files
             repo.ui.status(_("adding file changes\n"))
             newrevs, newfiles = _addchangegroupfiles(
                 repo, self, revmap, trp, efiles, needfiles)
             revisions += newrevs
             files += newfiles
 
             deltaheads = 0
             if oldheads:
                 heads = cl.heads()
                 deltaheads = len(heads) - len(oldheads)
                 for h in heads:
                     if h not in oldheads and repo[h].closesbranch():
                         deltaheads -= 1
             htext = ""
             if deltaheads:
                 htext = _(" (%+d heads)") % deltaheads
 
             repo.ui.status(_("added %d changesets"
                              " with %d changes to %d files%s\n")
                              % (changesets, revisions, files, htext))
             repo.invalidatevolatilesets()
 
             if changesets > 0:
                 if 'node' not in tr.hookargs:
                     tr.hookargs['node'] = hex(cl.node(clstart))
                     tr.hookargs['node_last'] = hex(cl.node(clend - 1))
                     hookargs = dict(tr.hookargs)
                 else:
                     hookargs = dict(tr.hookargs)
                     hookargs['node'] = hex(cl.node(clstart))
                     hookargs['node_last'] = hex(cl.node(clend - 1))
                 repo.hook('pretxnchangegroup',
                           throw=True, **pycompat.strkwargs(hookargs))
 
             added = [cl.node(r) for r in xrange(clstart, clend)]
             phaseall = None
             if srctype in ('push', 'serve'):
                 # Old servers can not push the boundary themselves.
                 # New servers won't push the boundary if changeset already
                 # exists locally as secret
                 #
                 # We should not use added here but the list of all change in
                 # the bundle
                 if repo.publishing():
                     targetphase = phaseall = phases.public
                 else:
                     # closer target phase computation
 
                     # Those changesets have been pushed from the
                     # outside, their phases are going to be pushed
                     # alongside. Therefor `targetphase` is
                     # ignored.
                     targetphase = phaseall = phases.draft
             if added:
                 phases.registernew(repo, tr, targetphase, added)
             if phaseall is not None:
                 phases.advanceboundary(repo, tr, phaseall, cgnodes)
 
             if changesets > 0:
 
                 def runhooks():
                     # These hooks run when the lock releases, not when the
                     # transaction closes. So it's possible for the changelog
                     # to have changed since we last saw it.
                     if clstart >= len(repo):
                         return
 
                     repo.hook("changegroup", **pycompat.strkwargs(hookargs))
 
                     for n in added:
                         args = hookargs.copy()
                         args['node'] = hex(n)
                         del args['node_last']
                         repo.hook("incoming", **pycompat.strkwargs(args))
 
                     newheads = [h for h in repo.heads()
                                 if h not in oldheads]
                     repo.ui.log("incoming",
                                 "%s incoming changes - new heads: %s\n",
                                 len(added),
                                 ', '.join([hex(c[:6]) for c in newheads]))
 
                 tr.addpostclose('changegroup-runhooks-%020i' % clstart,
                                 lambda tr: repo._afterlock(runhooks))
         finally:
             repo.ui.flush()
         # never return 0 here:
         if deltaheads < 0:
             ret = deltaheads - 1
         else:
             ret = deltaheads + 1
         return ret
 
 class cg2unpacker(cg1unpacker):
     """Unpacker for cg2 streams.
 
     cg2 streams add support for generaldelta, so the delta header
     format is slightly different. All other features about the data
     remain the same.
     """
     deltaheader = _CHANGEGROUPV2_DELTA_HEADER
     deltaheadersize = struct.calcsize(deltaheader)
     version = '02'
 
     def _deltaheader(self, headertuple, prevnode):
         node, p1, p2, deltabase, cs = headertuple
         flags = 0
         return node, p1, p2, deltabase, cs, flags
 
 class cg3unpacker(cg2unpacker):
     """Unpacker for cg3 streams.
 
     cg3 streams add support for exchanging treemanifests and revlog
     flags. It adds the revlog flags to the delta header and an empty chunk
     separating manifests and files.
     """
     deltaheader = _CHANGEGROUPV3_DELTA_HEADER
     deltaheadersize = struct.calcsize(deltaheader)
     version = '03'
     _grouplistcount = 2 # One list of manifests and one list of files
 
     def _deltaheader(self, headertuple, prevnode):
         node, p1, p2, deltabase, cs, flags = headertuple
         return node, p1, p2, deltabase, cs, flags
 
     def _unpackmanifests(self, repo, revmap, trp, prog, numchanges):
         super(cg3unpacker, self)._unpackmanifests(repo, revmap, trp, prog,
                                                   numchanges)
         for chunkdata in iter(self.filelogheader, {}):
             # If we get here, there are directory manifests in the changegroup
             d = chunkdata["filename"]
             repo.ui.debug("adding %s revisions\n" % d)
             dirlog = repo.manifestlog._revlog.dirlog(d)
             if not dirlog.addgroup(self, revmap, trp):
                 raise error.Abort(_("received dir revlog group is empty"))
 
 class headerlessfixup(object):
     def __init__(self, fh, h):
         self._h = h
         self._fh = fh
     def read(self, n):
         if self._h:
             d, self._h = self._h[:n], self._h[n:]
             if len(d) < n:
                 d += readexactly(self._fh, n - len(d))
             return d
         return readexactly(self._fh, n)
 
 class cg1packer(object):
     deltaheader = _CHANGEGROUPV1_DELTA_HEADER
     version = '01'
     def __init__(self, repo, bundlecaps=None):
         """Given a source repo, construct a bundler.
 
         bundlecaps is optional and can be used to specify the set of
         capabilities which can be used to build the bundle. While bundlecaps is
         unused in core Mercurial, extensions rely on this feature to communicate
         capabilities to customize the changegroup packer.
         """
         # Set of capabilities we can use to build the bundle.
         if bundlecaps is None:
             bundlecaps = set()
         self._bundlecaps = bundlecaps
         # experimental config: bundle.reorder
         reorder = repo.ui.config('bundle', 'reorder')
         if reorder == 'auto':
             reorder = None
         else:
             reorder = util.parsebool(reorder)
         self._repo = repo
         self._reorder = reorder
         self._progress = repo.ui.progress
         if self._repo.ui.verbose and not self._repo.ui.debugflag:
             self._verbosenote = self._repo.ui.note
         else:
             self._verbosenote = lambda s: None
 
     def close(self):
         return closechunk()
 
     def fileheader(self, fname):
         return chunkheader(len(fname)) + fname
 
     # Extracted both for clarity and for overriding in extensions.
     def _sortgroup(self, revlog, nodelist, lookup):
         """Sort nodes for change group and turn them into revnums."""
         # for generaldelta revlogs, we linearize the revs; this will both be
         # much quicker and generate a much smaller bundle
         if (revlog._generaldelta and self._reorder is None) or self._reorder:
             dag = dagutil.revlogdag(revlog)
             return dag.linearize(set(revlog.rev(n) for n in nodelist))
         else:
             return sorted([revlog.rev(n) for n in nodelist])
 
     def group(self, nodelist, revlog, lookup, units=None):
         """Calculate a delta group, yielding a sequence of changegroup chunks
         (strings).
 
         Given a list of changeset revs, return a set of deltas and
         metadata corresponding to nodes. The first delta is
         first parent(nodelist[0]) -> nodelist[0], the receiver is
         guaranteed to have this parent as it has all history before
         these changesets. In the case firstparent is nullrev the
         changegroup starts with a full revision.
 
         If units is not None, progress detail will be generated, units specifies
         the type of revlog that is touched (changelog, manifest, etc.).
         """
         # if we don't have any revisions touched by these changesets, bail
         if len(nodelist) == 0:
             yield self.close()
             return
 
         revs = self._sortgroup(revlog, nodelist, lookup)
 
         # add the parent of the first rev
         p = revlog.parentrevs(revs[0])[0]
         revs.insert(0, p)
 
         # build deltas
         total = len(revs) - 1
         msgbundling = _('bundling')
         for r in xrange(len(revs) - 1):
             if units is not None:
                 self._progress(msgbundling, r + 1, unit=units, total=total)
             prev, curr = revs[r], revs[r + 1]
             linknode = lookup(revlog.node(curr))
             for c in self.revchunk(revlog, curr, prev, linknode):
                 yield c
 
         if units is not None:
             self._progress(msgbundling, None)
         yield self.close()
 
     # filter any nodes that claim to be part of the known set
     def prune(self, revlog, missing, commonrevs):
         rr, rl = revlog.rev, revlog.linkrev
         return [n for n in missing if rl(rr(n)) not in commonrevs]
 
     def _packmanifests(self, dir, mfnodes, lookuplinknode):
         """Pack flat manifests into a changegroup stream."""
         assert not dir
         for chunk in self.group(mfnodes, self._repo.manifestlog._revlog,
                                 lookuplinknode, units=_('manifests')):
             yield chunk
 
     def _manifestsdone(self):
         return ''
 
     def generate(self, commonrevs, clnodes, fastpathlinkrev, source):
         '''yield a sequence of changegroup chunks (strings)'''
         repo = self._repo
         cl = repo.changelog
 
         clrevorder = {}
         mfs = {} # needed manifests
         fnodes = {} # needed file nodes
         changedfiles = set()
 
         # Callback for the changelog, used to collect changed files and manifest
         # nodes.
         # Returns the linkrev node (identity in the changelog case).
         def lookupcl(x):
             c = cl.read(x)
             clrevorder[x] = len(clrevorder)
             n = c[0]
             # record the first changeset introducing this manifest version
             mfs.setdefault(n, x)
             # Record a complete list of potentially-changed files in
             # this manifest.
             changedfiles.update(c[3])
             return x
 
         self._verbosenote(_('uncompressed size of bundle content:\n'))
         size = 0
         for chunk in self.group(clnodes, cl, lookupcl, units=_('changesets')):
             size += len(chunk)
             yield chunk
         self._verbosenote(_('%8.i (changelog)\n') % size)
 
         # We need to make sure that the linkrev in the changegroup refers to
         # the first changeset that introduced the manifest or file revision.
         # The fastpath is usually safer than the slowpath, because the filelogs
         # are walked in revlog order.
         #
         # When taking the slowpath with reorder=None and the manifest revlog
         # uses generaldelta, the manifest may be walked in the "wrong" order.
         # Without 'clrevorder', we would get an incorrect linkrev (see fix in
         # cc0ff93d0c0c).
         #
         # When taking the fastpath, we are only vulnerable to reordering
         # of the changelog itself. The changelog never uses generaldelta, so
         # it is only reordered when reorder=True. To handle this case, we
         # simply take the slowpath, which already has the 'clrevorder' logic.
         # This was also fixed in cc0ff93d0c0c.
         fastpathlinkrev = fastpathlinkrev and not self._reorder
         # Treemanifests don't work correctly with fastpathlinkrev
         # either, because we don't discover which directory nodes to
         # send along with files. This could probably be fixed.
         fastpathlinkrev = fastpathlinkrev and (
             'treemanifest' not in repo.requirements)
 
         for chunk in self.generatemanifests(commonrevs, clrevorder,
                 fastpathlinkrev, mfs, fnodes):
             yield chunk
         mfs.clear()
         clrevs = set(cl.rev(x) for x in clnodes)
 
         if not fastpathlinkrev:
             def linknodes(unused, fname):
                 return fnodes.get(fname, {})
         else:
             cln = cl.node
             def linknodes(filerevlog, fname):
                 llr = filerevlog.linkrev
                 fln = filerevlog.node
                 revs = ((r, llr(r)) for r in filerevlog)
                 return dict((fln(r), cln(lr)) for r, lr in revs if lr in clrevs)
 
         for chunk in self.generatefiles(changedfiles, linknodes, commonrevs,
                                         source):
             yield chunk
 
         yield self.close()
 
         if clnodes:
             repo.hook('outgoing', node=hex(clnodes[0]), source=source)
 
     def generatemanifests(self, commonrevs, clrevorder, fastpathlinkrev, mfs,
                           fnodes):
         repo = self._repo
         mfl = repo.manifestlog
         dirlog = mfl._revlog.dirlog
         tmfnodes = {'': mfs}
 
         # Callback for the manifest, used to collect linkrevs for filelog
         # revisions.
         # Returns the linkrev node (collected in lookupcl).
         def makelookupmflinknode(dir):
             if fastpathlinkrev:
                 assert not dir
                 return mfs.__getitem__
 
             def lookupmflinknode(x):
                 """Callback for looking up the linknode for manifests.
 
                 Returns the linkrev node for the specified manifest.
 
                 SIDE EFFECT:
 
                 1) fclnodes gets populated with the list of relevant
                    file nodes if we're not using fastpathlinkrev
                 2) When treemanifests are in use, collects treemanifest nodes
                    to send
 
                 Note that this means manifests must be completely sent to
                 the client before you can trust the list of files and
                 treemanifests to send.
                 """
                 clnode = tmfnodes[dir][x]
                 mdata = mfl.get(dir, x).readfast(shallow=True)
                 for p, n, fl in mdata.iterentries():
                     if fl == 't': # subdirectory manifest
                         subdir = dir + p + '/'
                         tmfclnodes = tmfnodes.setdefault(subdir, {})
                         tmfclnode = tmfclnodes.setdefault(n, clnode)
                         if clrevorder[clnode] < clrevorder[tmfclnode]:
                             tmfclnodes[n] = clnode
                     else:
                         f = dir + p
                         fclnodes = fnodes.setdefault(f, {})
                         fclnode = fclnodes.setdefault(n, clnode)
                         if clrevorder[clnode] < clrevorder[fclnode]:
                             fclnodes[n] = clnode
                 return clnode
             return lookupmflinknode
 
         size = 0
         while tmfnodes:
             dir = min(tmfnodes)
             nodes = tmfnodes[dir]
             prunednodes = self.prune(dirlog(dir), nodes, commonrevs)
             if not dir or prunednodes:
                 for x in self._packmanifests(dir, prunednodes,
                                              makelookupmflinknode(dir)):
                     size += len(x)
                     yield x
             del tmfnodes[dir]
         self._verbosenote(_('%8.i (manifests)\n') % size)
         yield self._manifestsdone()
 
     # The 'source' parameter is useful for extensions
     def generatefiles(self, changedfiles, linknodes, commonrevs, source):
         repo = self._repo
         progress = self._progress
         msgbundling = _('bundling')
 
         total = len(changedfiles)
         # for progress output
         msgfiles = _('files')
         for i, fname in enumerate(sorted(changedfiles)):
             filerevlog = repo.file(fname)
             if not filerevlog:
                 raise error.Abort(_("empty or missing revlog for %s") % fname)
 
             linkrevnodes = linknodes(filerevlog, fname)
             # Lookup for filenodes, we collected the linkrev nodes above in the
             # fastpath case and with lookupmf in the slowpath case.
             def lookupfilelog(x):
                 return linkrevnodes[x]
 
             filenodes = self.prune(filerevlog, linkrevnodes, commonrevs)
             if filenodes:
                 progress(msgbundling, i + 1, item=fname, unit=msgfiles,
                          total=total)
                 h = self.fileheader(fname)
                 size = len(h)
                 yield h
                 for chunk in self.group(filenodes, filerevlog, lookupfilelog):
                     size += len(chunk)
                     yield chunk
                 self._verbosenote(_('%8.i  %s\n') % (size, fname))
         progress(msgbundling, None)
 
     def deltaparent(self, revlog, rev, p1, p2, prev):
         return prev
 
     def revchunk(self, revlog, rev, prev, linknode):
         node = revlog.node(rev)
         p1, p2 = revlog.parentrevs(rev)
         base = self.deltaparent(revlog, rev, p1, p2, prev)
 
         prefix = ''
         if revlog.iscensored(base) or revlog.iscensored(rev):
             try:
                 delta = revlog.revision(node, raw=True)
             except error.CensoredNodeError as e:
                 delta = e.tombstone
             if base == nullrev:
                 prefix = mdiff.trivialdiffheader(len(delta))
             else:
                 baselen = revlog.rawsize(base)
                 prefix = mdiff.replacediffheader(baselen, len(delta))
         elif base == nullrev:
             delta = revlog.revision(node, raw=True)
             prefix = mdiff.trivialdiffheader(len(delta))
         else:
             delta = revlog.revdiff(base, rev)
         p1n, p2n = revlog.parents(node)
         basenode = revlog.node(base)
         flags = revlog.flags(rev)
         meta = self.builddeltaheader(node, p1n, p2n, basenode, linknode, flags)
         meta += prefix
         l = len(meta) + len(delta)
         yield chunkheader(l)
         yield meta
         yield delta
     def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags):
         # do nothing with basenode, it is implicitly the previous one in HG10
         # do nothing with flags, it is implicitly 0 for cg1 and cg2
         return struct.pack(self.deltaheader, node, p1n, p2n, linknode)
 
 class cg2packer(cg1packer):
     version = '02'
     deltaheader = _CHANGEGROUPV2_DELTA_HEADER
 
     def __init__(self, repo, bundlecaps=None):
         super(cg2packer, self).__init__(repo, bundlecaps)
         if self._reorder is None:
             # Since generaldelta is directly supported by cg2, reordering
             # generally doesn't help, so we disable it by default (treating
             # bundle.reorder=auto just like bundle.reorder=False).
             self._reorder = False
 
     def deltaparent(self, revlog, rev, p1, p2, prev):
         dp = revlog.deltaparent(rev)
         if dp == nullrev and revlog.storedeltachains:
             # Avoid sending full revisions when delta parent is null. Pick prev
             # in that case. It's tempting to pick p1 in this case, as p1 will
             # be smaller in the common case. However, computing a delta against
             # p1 may require resolving the raw text of p1, which could be
             # expensive. The revlog caches should have prev cached, meaning
             # less CPU for changegroup generation. There is likely room to add
             # a flag and/or config option to control this behavior.
             return prev
         elif dp == nullrev:
             # revlog is configured to use full snapshot for a reason,
             # stick to full snapshot.
             return nullrev
         elif dp not in (p1, p2, prev):
             # Pick prev when we can't be sure remote has the base revision.
             return prev
         else:
             return dp
 
     def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags):
         # Do nothing with flags, it is implicitly 0 in cg1 and cg2
         return struct.pack(self.deltaheader, node, p1n, p2n, basenode, linknode)
 
 class cg3packer(cg2packer):
     version = '03'
     deltaheader = _CHANGEGROUPV3_DELTA_HEADER
 
     def _packmanifests(self, dir, mfnodes, lookuplinknode):
         if dir:
             yield self.fileheader(dir)
 
         dirlog = self._repo.manifestlog._revlog.dirlog(dir)
         for chunk in self.group(mfnodes, dirlog, lookuplinknode,
                                 units=_('manifests')):
             yield chunk
 
     def _manifestsdone(self):
         return self.close()
 
     def builddeltaheader(self, node, p1n, p2n, basenode, linknode, flags):
         return struct.pack(
             self.deltaheader, node, p1n, p2n, basenode, linknode, flags)
 
 _packermap = {'01': (cg1packer, cg1unpacker),
              # cg2 adds support for exchanging generaldelta
              '02': (cg2packer, cg2unpacker),
              # cg3 adds support for exchanging revlog flags and treemanifests
              '03': (cg3packer, cg3unpacker),
 }
 
 def allsupportedversions(repo):
     versions = set(_packermap.keys())
     if not (repo.ui.configbool('experimental', 'changegroup3') or
             repo.ui.configbool('experimental', 'treemanifest') or
             'treemanifest' in repo.requirements):
         versions.discard('03')
     return versions
 
 # Changegroup versions that can be applied to the repo
 def supportedincomingversions(repo):
     return allsupportedversions(repo)
 
 # Changegroup versions that can be created from the repo
 def supportedoutgoingversions(repo):
     versions = allsupportedversions(repo)
     if 'treemanifest' in repo.requirements:
         # Versions 01 and 02 support only flat manifests and it's just too
         # expensive to convert between the flat manifest and tree manifest on
         # the fly. Since tree manifests are hashed differently, all of history
         # would have to be converted. Instead, we simply don't even pretend to
         # support versions 01 and 02.
         versions.discard('01')
         versions.discard('02')
     return versions
 
 def safeversion(repo):
     # Finds the smallest version that it's safe to assume clients of the repo
     # will support. For example, all hg versions that support generaldelta also
     # support changegroup 02.
     versions = supportedoutgoingversions(repo)
     if 'generaldelta' in repo.requirements:
         versions.discard('01')
     assert versions
     return min(versions)
 
 def getbundler(version, repo, bundlecaps=None):
     assert version in supportedoutgoingversions(repo)
     return _packermap[version][0](repo, bundlecaps)
 
 def getunbundler(version, fh, alg, extras=None):
     return _packermap[version][1](fh, alg, extras=extras)
 
 def _changegroupinfo(repo, nodes, source):
     if repo.ui.verbose or source == 'bundle':
         repo.ui.status(_("%d changesets found\n") % len(nodes))
     if repo.ui.debugflag:
         repo.ui.debug("list of changesets:\n")
         for node in nodes:
             repo.ui.debug("%s\n" % hex(node))
 
 def makestream(repo, outgoing, version, source, fastpath=False,
                bundlecaps=None):
     bundler = getbundler(version, repo, bundlecaps=bundlecaps)
     return getsubsetraw(repo, outgoing, bundler, source, fastpath=fastpath)
 
 def makechangegroup(repo, outgoing, version, source, fastpath=False,
                     bundlecaps=None):
     cgstream = makestream(repo, outgoing, version, source,
                           fastpath=fastpath, bundlecaps=bundlecaps)
     return getunbundler(version, util.chunkbuffer(cgstream), None,
                         {'clcount': len(outgoing.missing) })
 
 def getsubsetraw(repo, outgoing, bundler, source, fastpath=False):
     repo = repo.unfiltered()
     commonrevs = outgoing.common
     csets = outgoing.missing
     heads = outgoing.missingheads
     # We go through the fast path if we get told to, or if all (unfiltered
     # heads have been requested (since we then know there all linkrevs will
     # be pulled by the client).
     heads.sort()
     fastpathlinkrev = fastpath or (
             repo.filtername is None and heads == sorted(repo.heads()))
 
     repo.hook('preoutgoing', throw=True, source=source)
     _changegroupinfo(repo, csets, source)
     return bundler.generate(commonrevs, csets, fastpathlinkrev, source)
 
-def getchangegroup(repo, source, outgoing, bundlecaps=None,
-                   version='01'):
-    """Like getbundle, but taking a discovery.outgoing as an argument.
-
-    This is only implemented for local repos and reuses potentially
-    precomputed sets in outgoing."""
-    if not outgoing.missing:
-        return None
-    return makechangegroup(repo, outgoing, version, source,
-                           bundlecaps=bundlecaps)
-
 def _addchangegroupfiles(repo, source, revmap, trp, expectedfiles, needfiles):
     revisions = 0
     files = 0
     for chunkdata in iter(source.filelogheader, {}):
         files += 1
         f = chunkdata["filename"]
         repo.ui.debug("adding %s revisions\n" % f)
         repo.ui.progress(_('files'), files, unit=_('files'),
                          total=expectedfiles)
         fl = repo.file(f)
         o = len(fl)
         try:
             if not fl.addgroup(source, revmap, trp):
                 raise error.Abort(_("received file revlog group is empty"))
         except error.CensoredBaseError as e:
             raise error.Abort(_("received delta base is censored: %s") % e)
         revisions += len(fl) - o
         if f in needfiles:
             needs = needfiles[f]
             for new in xrange(o, len(fl)):
                 n = fl.node(new)
                 if n in needs:
                     needs.remove(n)
                 else:
                     raise error.Abort(
                         _("received spurious file revlog entry"))
             if not needs:
                 del needfiles[f]
     repo.ui.progress(_('files'), None)
 
     for f, needs in needfiles.iteritems():
         fl = repo.file(f)
         for n in needs:
             try:
                 fl.rev(n)
             except error.LookupError:
                 raise error.Abort(
                     _('missing file data for %s:%s - run hg verify') %
                     (f, hex(n)))
 
     return revisions, files

mercurial/exchange.py

@@ -1,2011 +1,2011 b''
 # exchange.py - utility to exchange data between repos.
 #
 # Copyright 2005-2007 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 from __future__ import absolute_import
 
 import errno
 import hashlib
 
 from .i18n import _
 from .node import (
     hex,
     nullid,
 )
 from . import (
     bookmarks as bookmod,
     bundle2,
     changegroup,
     discovery,
     error,
     lock as lockmod,
     obsolete,
     phases,
     pushkey,
     pycompat,
     scmutil,
     sslutil,
     streamclone,
     url as urlmod,
     util,
 )
 
 urlerr = util.urlerr
 urlreq = util.urlreq
 
 # Maps bundle version human names to changegroup versions.
 _bundlespeccgversions = {'v1': '01',
                          'v2': '02',
                          'packed1': 's1',
                          'bundle2': '02', #legacy
                         }
 
 # Compression engines allowed in version 1. THIS SHOULD NEVER CHANGE.
 _bundlespecv1compengines = {'gzip', 'bzip2', 'none'}
 
 def parsebundlespec(repo, spec, strict=True, externalnames=False):
     """Parse a bundle string specification into parts.
 
     Bundle specifications denote a well-defined bundle/exchange format.
     The content of a given specification should not change over time in
     order to ensure that bundles produced by a newer version of Mercurial are
     readable from an older version.
 
     The string currently has the form:
 
        <compression>-<type>[;<parameter0>[;<parameter1>]]
 
     Where <compression> is one of the supported compression formats
     and <type> is (currently) a version string. A ";" can follow the type and
     all text afterwards is interpreted as URI encoded, ";" delimited key=value
     pairs.
 
     If ``strict`` is True (the default) <compression> is required. Otherwise,
     it is optional.
 
     If ``externalnames`` is False (the default), the human-centric names will
     be converted to their internal representation.
 
     Returns a 3-tuple of (compression, version, parameters). Compression will
     be ``None`` if not in strict mode and a compression isn't defined.
 
     An ``InvalidBundleSpecification`` is raised when the specification is
     not syntactically well formed.
 
     An ``UnsupportedBundleSpecification`` is raised when the compression or
     bundle type/version is not recognized.
 
     Note: this function will likely eventually return a more complex data
     structure, including bundle2 part information.
     """
     def parseparams(s):
         if ';' not in s:
             return s, {}
 
         params = {}
         version, paramstr = s.split(';', 1)
 
         for p in paramstr.split(';'):
             if '=' not in p:
                 raise error.InvalidBundleSpecification(
                     _('invalid bundle specification: '
                       'missing "=" in parameter: %s') % p)
 
             key, value = p.split('=', 1)
             key = urlreq.unquote(key)
             value = urlreq.unquote(value)
             params[key] = value
 
         return version, params
 
 
     if strict and '-' not in spec:
         raise error.InvalidBundleSpecification(
                 _('invalid bundle specification; '
                   'must be prefixed with compression: %s') % spec)
 
     if '-' in spec:
         compression, version = spec.split('-', 1)
 
         if compression not in util.compengines.supportedbundlenames:
             raise error.UnsupportedBundleSpecification(
                     _('%s compression is not supported') % compression)
 
         version, params = parseparams(version)
 
         if version not in _bundlespeccgversions:
             raise error.UnsupportedBundleSpecification(
                     _('%s is not a recognized bundle version') % version)
     else:
         # Value could be just the compression or just the version, in which
         # case some defaults are assumed (but only when not in strict mode).
         assert not strict
 
         spec, params = parseparams(spec)
 
         if spec in util.compengines.supportedbundlenames:
             compression = spec
             version = 'v1'
             # Generaldelta repos require v2.
             if 'generaldelta' in repo.requirements:
                 version = 'v2'
             # Modern compression engines require v2.
             if compression not in _bundlespecv1compengines:
                 version = 'v2'
         elif spec in _bundlespeccgversions:
             if spec == 'packed1':
                 compression = 'none'
             else:
                 compression = 'bzip2'
             version = spec
         else:
             raise error.UnsupportedBundleSpecification(
                     _('%s is not a recognized bundle specification') % spec)
 
     # Bundle version 1 only supports a known set of compression engines.
     if version == 'v1' and compression not in _bundlespecv1compengines:
         raise error.UnsupportedBundleSpecification(
             _('compression engine %s is not supported on v1 bundles') %
             compression)
 
     # The specification for packed1 can optionally declare the data formats
     # required to apply it. If we see this metadata, compare against what the
     # repo supports and error if the bundle isn't compatible.
     if version == 'packed1' and 'requirements' in params:
         requirements = set(params['requirements'].split(','))
         missingreqs = requirements - repo.supportedformats
         if missingreqs:
             raise error.UnsupportedBundleSpecification(
                     _('missing support for repository features: %s') %
                       ', '.join(sorted(missingreqs)))
 
     if not externalnames:
         engine = util.compengines.forbundlename(compression)
         compression = engine.bundletype()[1]
         version = _bundlespeccgversions[version]
     return compression, version, params
 
 def readbundle(ui, fh, fname, vfs=None):
     header = changegroup.readexactly(fh, 4)
 
     alg = None
     if not fname:
         fname = "stream"
         if not header.startswith('HG') and header.startswith('\0'):
             fh = changegroup.headerlessfixup(fh, header)
             header = "HG10"
             alg = 'UN'
     elif vfs:
         fname = vfs.join(fname)
 
     magic, version = header[0:2], header[2:4]
 
     if magic != 'HG':
         raise error.Abort(_('%s: not a Mercurial bundle') % fname)
     if version == '10':
         if alg is None:
             alg = changegroup.readexactly(fh, 2)
         return changegroup.cg1unpacker(fh, alg)
     elif version.startswith('2'):
         return bundle2.getunbundler(ui, fh, magicstring=magic + version)
     elif version == 'S1':
         return streamclone.streamcloneapplier(fh)
     else:
         raise error.Abort(_('%s: unknown bundle version %s') % (fname, version))
 
 def getbundlespec(ui, fh):
     """Infer the bundlespec from a bundle file handle.
 
     The input file handle is seeked and the original seek position is not
     restored.
     """
     def speccompression(alg):
         try:
             return util.compengines.forbundletype(alg).bundletype()[0]
         except KeyError:
             return None
 
     b = readbundle(ui, fh, None)
     if isinstance(b, changegroup.cg1unpacker):
         alg = b._type
         if alg == '_truncatedBZ':
             alg = 'BZ'
         comp = speccompression(alg)
         if not comp:
             raise error.Abort(_('unknown compression algorithm: %s') % alg)
         return '%s-v1' % comp
     elif isinstance(b, bundle2.unbundle20):
         if 'Compression' in b.params:
             comp = speccompression(b.params['Compression'])
             if not comp:
                 raise error.Abort(_('unknown compression algorithm: %s') % comp)
         else:
             comp = 'none'
 
         version = None
         for part in b.iterparts():
             if part.type == 'changegroup':
                 version = part.params['version']
                 if version in ('01', '02'):
                     version = 'v2'
                 else:
                     raise error.Abort(_('changegroup version %s does not have '
                                         'a known bundlespec') % version,
                                       hint=_('try upgrading your Mercurial '
                                               'client'))
 
         if not version:
             raise error.Abort(_('could not identify changegroup version in '
                                 'bundle'))
 
         return '%s-%s' % (comp, version)
     elif isinstance(b, streamclone.streamcloneapplier):
         requirements = streamclone.readbundle1header(fh)[2]
         params = 'requirements=%s' % ','.join(sorted(requirements))
         return 'none-packed1;%s' % urlreq.quote(params)
     else:
         raise error.Abort(_('unknown bundle type: %s') % b)
 
 def _computeoutgoing(repo, heads, common):
     """Computes which revs are outgoing given a set of common
     and a set of heads.
 
     This is a separate function so extensions can have access to
     the logic.
 
     Returns a discovery.outgoing object.
     """
     cl = repo.changelog
     if common:
         hasnode = cl.hasnode
         common = [n for n in common if hasnode(n)]
     else:
         common = [nullid]
     if not heads:
         heads = cl.heads()
     return discovery.outgoing(repo, common, heads)
 
 def _forcebundle1(op):
     """return true if a pull/push must use bundle1
 
     This function is used to allow testing of the older bundle version"""
     ui = op.repo.ui
     forcebundle1 = False
     # The goal is this config is to allow developer to choose the bundle
     # version used during exchanged. This is especially handy during test.
     # Value is a list of bundle version to be picked from, highest version
     # should be used.
     #
     # developer config: devel.legacy.exchange
     exchange = ui.configlist('devel', 'legacy.exchange')
     forcebundle1 = 'bundle2' not in exchange and 'bundle1' in exchange
     return forcebundle1 or not op.remote.capable('bundle2')
 
 class pushoperation(object):
     """A object that represent a single push operation
 
     Its purpose is to carry push related state and very common operations.
 
     A new pushoperation should be created at the beginning of each push and
     discarded afterward.
     """
 
     def __init__(self, repo, remote, force=False, revs=None, newbranch=False,
                  bookmarks=(), pushvars=None):
         # repo we push from
         self.repo = repo
         self.ui = repo.ui
         # repo we push to
         self.remote = remote
         # force option provided
         self.force = force
         # revs to be pushed (None is "all")
         self.revs = revs
         # bookmark explicitly pushed
         self.bookmarks = bookmarks
         # allow push of new branch
         self.newbranch = newbranch
         # step already performed
         # (used to check what steps have been already performed through bundle2)
         self.stepsdone = set()
         # Integer version of the changegroup push result
         # - None means nothing to push
         # - 0 means HTTP error
         # - 1 means we pushed and remote head count is unchanged *or*
         #   we have outgoing changesets but refused to push
         # - other values as described by addchangegroup()
         self.cgresult = None
         # Boolean value for the bookmark push
         self.bkresult = None
         # discover.outgoing object (contains common and outgoing data)
         self.outgoing = None
         # all remote topological heads before the push
         self.remoteheads = None
         # Details of the remote branch pre and post push
         #
         # mapping: {'branch': ([remoteheads],
         #                      [newheads],
         #                      [unsyncedheads],
         #                      [discardedheads])}
         # - branch: the branch name
         # - remoteheads: the list of remote heads known locally
         #                None if the branch is new
         # - newheads: the new remote heads (known locally) with outgoing pushed
         # - unsyncedheads: the list of remote heads unknown locally.
         # - discardedheads: the list of remote heads made obsolete by the push
         self.pushbranchmap = None
         # testable as a boolean indicating if any nodes are missing locally.
         self.incoming = None
         # phases changes that must be pushed along side the changesets
         self.outdatedphases = None
         # phases changes that must be pushed if changeset push fails
         self.fallbackoutdatedphases = None
         # outgoing obsmarkers
         self.outobsmarkers = set()
         # outgoing bookmarks
         self.outbookmarks = []
         # transaction manager
         self.trmanager = None
         # map { pushkey partid -> callback handling failure}
         # used to handle exception from mandatory pushkey part failure
         self.pkfailcb = {}
         # an iterable of pushvars or None
         self.pushvars = pushvars
 
     @util.propertycache
     def futureheads(self):
         """future remote heads if the changeset push succeeds"""
         return self.outgoing.missingheads
 
     @util.propertycache
     def fallbackheads(self):
         """future remote heads if the changeset push fails"""
         if self.revs is None:
             # not target to push, all common are relevant
             return self.outgoing.commonheads
         unfi = self.repo.unfiltered()
         # I want cheads = heads(::missingheads and ::commonheads)
         # (missingheads is revs with secret changeset filtered out)
         #
         # This can be expressed as:
         #     cheads = ( (missingheads and ::commonheads)
         #              + (commonheads and ::missingheads))"
         #              )
         #
         # while trying to push we already computed the following:
         #     common = (::commonheads)
         #     missing = ((commonheads::missingheads) - commonheads)
         #
         # We can pick:
         # * missingheads part of common (::commonheads)
         common = self.outgoing.common
         nm = self.repo.changelog.nodemap
         cheads = [node for node in self.revs if nm[node] in common]
         # and
         # * commonheads parents on missing
         revset = unfi.set('%ln and parents(roots(%ln))',
                          self.outgoing.commonheads,
                          self.outgoing.missing)
         cheads.extend(c.node() for c in revset)
         return cheads
 
     @property
     def commonheads(self):
         """set of all common heads after changeset bundle push"""
         if self.cgresult:
             return self.futureheads
         else:
             return self.fallbackheads
 
 # mapping of message used when pushing bookmark
 bookmsgmap = {'update': (_("updating bookmark %s\n"),
                          _('updating bookmark %s failed!\n')),
               'export': (_("exporting bookmark %s\n"),
                          _('exporting bookmark %s failed!\n')),
               'delete': (_("deleting remote bookmark %s\n"),
                          _('deleting remote bookmark %s failed!\n')),
               }
 
 
 def push(repo, remote, force=False, revs=None, newbranch=False, bookmarks=(),
          opargs=None):
     '''Push outgoing changesets (limited by revs) from a local
     repository to remote. Return an integer:
       - None means nothing to push
       - 0 means HTTP error
       - 1 means we pushed and remote head count is unchanged *or*
         we have outgoing changesets but refused to push
       - other values as described by addchangegroup()
     '''
     if opargs is None:
         opargs = {}
     pushop = pushoperation(repo, remote, force, revs, newbranch, bookmarks,
                            **opargs)
     if pushop.remote.local():
         missing = (set(pushop.repo.requirements)
                    - pushop.remote.local().supported)
         if missing:
             msg = _("required features are not"
                     " supported in the destination:"
                     " %s") % (', '.join(sorted(missing)))
             raise error.Abort(msg)
 
     if not pushop.remote.canpush():
         raise error.Abort(_("destination does not support push"))
 
     if not pushop.remote.capable('unbundle'):
         raise error.Abort(_('cannot push: destination does not support the '
                             'unbundle wire protocol command'))
 
     # get lock as we might write phase data
     wlock = lock = None
     try:
         # bundle2 push may receive a reply bundle touching bookmarks or other
         # things requiring the wlock. Take it now to ensure proper ordering.
         maypushback = pushop.ui.configbool('experimental', 'bundle2.pushback')
         if (not _forcebundle1(pushop)) and maypushback:
             wlock = pushop.repo.wlock()
         lock = pushop.repo.lock()
         pushop.trmanager = transactionmanager(pushop.repo,
                                               'push-response',
                                               pushop.remote.url())
     except IOError as err:
         if err.errno != errno.EACCES:
             raise
         # source repo cannot be locked.
         # We do not abort the push, but just disable the local phase
         # synchronisation.
         msg = 'cannot lock source repository: %s\n' % err
         pushop.ui.debug(msg)
 
     with wlock or util.nullcontextmanager(), \
             lock or util.nullcontextmanager(), \
             pushop.trmanager or util.nullcontextmanager():
         pushop.repo.checkpush(pushop)
         _pushdiscovery(pushop)
         if not _forcebundle1(pushop):
             _pushbundle2(pushop)
         _pushchangeset(pushop)
         _pushsyncphase(pushop)
         _pushobsolete(pushop)
         _pushbookmark(pushop)
 
     return pushop
 
 # list of steps to perform discovery before push
 pushdiscoveryorder = []
 
 # Mapping between step name and function
 #
 # This exists to help extensions wrap steps if necessary
 pushdiscoverymapping = {}
 
 def pushdiscovery(stepname):
     """decorator for function performing discovery before push
 
     The function is added to the step -> function mapping and appended to the
     list of steps.  Beware that decorated function will be added in order (this
     may matter).
 
     You can only use this decorator for a new step, if you want to wrap a step
     from an extension, change the pushdiscovery dictionary directly."""
     def dec(func):
         assert stepname not in pushdiscoverymapping
         pushdiscoverymapping[stepname] = func
         pushdiscoveryorder.append(stepname)
         return func
     return dec
 
 def _pushdiscovery(pushop):
     """Run all discovery steps"""
     for stepname in pushdiscoveryorder:
         step = pushdiscoverymapping[stepname]
         step(pushop)
 
 @pushdiscovery('changeset')
 def _pushdiscoverychangeset(pushop):
     """discover the changeset that need to be pushed"""
     fci = discovery.findcommonincoming
     commoninc = fci(pushop.repo, pushop.remote, force=pushop.force)
     common, inc, remoteheads = commoninc
     fco = discovery.findcommonoutgoing
     outgoing = fco(pushop.repo, pushop.remote, onlyheads=pushop.revs,
                    commoninc=commoninc, force=pushop.force)
     pushop.outgoing = outgoing
     pushop.remoteheads = remoteheads
     pushop.incoming = inc
 
 @pushdiscovery('phase')
 def _pushdiscoveryphase(pushop):
     """discover the phase that needs to be pushed
 
     (computed for both success and failure case for changesets push)"""
     outgoing = pushop.outgoing
     unfi = pushop.repo.unfiltered()
     remotephases = pushop.remote.listkeys('phases')
     publishing = remotephases.get('publishing', False)
     if (pushop.ui.configbool('ui', '_usedassubrepo')
         and remotephases    # server supports phases
         and not pushop.outgoing.missing # no changesets to be pushed
         and publishing):
         # When:
         # - this is a subrepo push
         # - and remote support phase
         # - and no changeset are to be pushed
         # - and remote is publishing
         # We may be in issue 3871 case!
         # We drop the possible phase synchronisation done by
         # courtesy to publish changesets possibly locally draft
         # on the remote.
         remotephases = {'publishing': 'True'}
     ana = phases.analyzeremotephases(pushop.repo,
                                      pushop.fallbackheads,
                                      remotephases)
     pheads, droots = ana
     extracond = ''
     if not publishing:
         extracond = ' and public()'
     revset = 'heads((%%ln::%%ln) %s)' % extracond
     # Get the list of all revs draft on remote by public here.
     # XXX Beware that revset break if droots is not strictly
     # XXX root we may want to ensure it is but it is costly
     fallback = list(unfi.set(revset, droots, pushop.fallbackheads))
     if not outgoing.missing:
         future = fallback
     else:
         # adds changeset we are going to push as draft
         #
         # should not be necessary for publishing server, but because of an
         # issue fixed in xxxxx we have to do it anyway.
         fdroots = list(unfi.set('roots(%ln  + %ln::)',
                        outgoing.missing, droots))
         fdroots = [f.node() for f in fdroots]
         future = list(unfi.set(revset, fdroots, pushop.futureheads))
     pushop.outdatedphases = future
     pushop.fallbackoutdatedphases = fallback
 
 @pushdiscovery('obsmarker')
 def _pushdiscoveryobsmarkers(pushop):
     if (obsolete.isenabled(pushop.repo, obsolete.exchangeopt)
         and pushop.repo.obsstore
         and 'obsolete' in pushop.remote.listkeys('namespaces')):
         repo = pushop.repo
         # very naive computation, that can be quite expensive on big repo.
         # However: evolution is currently slow on them anyway.
         nodes = (c.node() for c in repo.set('::%ln', pushop.futureheads))
         pushop.outobsmarkers = pushop.repo.obsstore.relevantmarkers(nodes)
 
 @pushdiscovery('bookmarks')
 def _pushdiscoverybookmarks(pushop):
     ui = pushop.ui
     repo = pushop.repo.unfiltered()
     remote = pushop.remote
     ui.debug("checking for updated bookmarks\n")
     ancestors = ()
     if pushop.revs:
         revnums = map(repo.changelog.rev, pushop.revs)
         ancestors = repo.changelog.ancestors(revnums, inclusive=True)
     remotebookmark = remote.listkeys('bookmarks')
 
     explicit = set([repo._bookmarks.expandname(bookmark)
                     for bookmark in pushop.bookmarks])
 
     remotebookmark = bookmod.unhexlifybookmarks(remotebookmark)
     comp = bookmod.comparebookmarks(repo, repo._bookmarks, remotebookmark)
 
     def safehex(x):
         if x is None:
             return x
         return hex(x)
 
     def hexifycompbookmarks(bookmarks):
         for b, scid, dcid in bookmarks:
             yield b, safehex(scid), safehex(dcid)
 
     comp = [hexifycompbookmarks(marks) for marks in comp]
     addsrc, adddst, advsrc, advdst, diverge, differ, invalid, same = comp
 
     for b, scid, dcid in advsrc:
         if b in explicit:
             explicit.remove(b)
         if not ancestors or repo[scid].rev() in ancestors:
             pushop.outbookmarks.append((b, dcid, scid))
     # search added bookmark
     for b, scid, dcid in addsrc:
         if b in explicit:
             explicit.remove(b)
             pushop.outbookmarks.append((b, '', scid))
     # search for overwritten bookmark
     for b, scid, dcid in list(advdst) + list(diverge) + list(differ):
         if b in explicit:
             explicit.remove(b)
             pushop.outbookmarks.append((b, dcid, scid))
     # search for bookmark to delete
     for b, scid, dcid in adddst:
         if b in explicit:
             explicit.remove(b)
             # treat as "deleted locally"
             pushop.outbookmarks.append((b, dcid, ''))
     # identical bookmarks shouldn't get reported
     for b, scid, dcid in same:
         if b in explicit:
             explicit.remove(b)
 
     if explicit:
         explicit = sorted(explicit)
         # we should probably list all of them
         ui.warn(_('bookmark %s does not exist on the local '
                   'or remote repository!\n') % explicit[0])
         pushop.bkresult = 2
 
     pushop.outbookmarks.sort()
 
 def _pushcheckoutgoing(pushop):
     outgoing = pushop.outgoing
     unfi = pushop.repo.unfiltered()
     if not outgoing.missing:
         # nothing to push
         scmutil.nochangesfound(unfi.ui, unfi, outgoing.excluded)
         return False
     # something to push
     if not pushop.force:
         # if repo.obsstore == False --> no obsolete
         # then, save the iteration
         if unfi.obsstore:
             # this message are here for 80 char limit reason
             mso = _("push includes obsolete changeset: %s!")
             mspd = _("push includes phase-divergent changeset: %s!")
             mscd = _("push includes content-divergent changeset: %s!")
             mst = {"orphan": _("push includes orphan changeset: %s!"),
                    "phase-divergent": mspd,
                    "content-divergent": mscd}
             # If we are to push if there is at least one
             # obsolete or unstable changeset in missing, at
             # least one of the missinghead will be obsolete or
             # unstable. So checking heads only is ok
             for node in outgoing.missingheads:
                 ctx = unfi[node]
                 if ctx.obsolete():
                     raise error.Abort(mso % ctx)
                 elif ctx.isunstable():
                     # TODO print more than one instability in the abort
                     # message
                     raise error.Abort(mst[ctx.instabilities()[0]] % ctx)
 
         discovery.checkheads(pushop)
     return True
 
 # List of names of steps to perform for an outgoing bundle2, order matters.
 b2partsgenorder = []
 
 # Mapping between step name and function
 #
 # This exists to help extensions wrap steps if necessary
 b2partsgenmapping = {}
 
 def b2partsgenerator(stepname, idx=None):
     """decorator for function generating bundle2 part
 
     The function is added to the step -> function mapping and appended to the
     list of steps.  Beware that decorated functions will be added in order
     (this may matter).
 
     You can only use this decorator for new steps, if you want to wrap a step
     from an extension, attack the b2partsgenmapping dictionary directly."""
     def dec(func):
         assert stepname not in b2partsgenmapping
         b2partsgenmapping[stepname] = func
         if idx is None:
             b2partsgenorder.append(stepname)
         else:
             b2partsgenorder.insert(idx, stepname)
         return func
     return dec
 
 def _pushb2ctxcheckheads(pushop, bundler):
     """Generate race condition checking parts
 
     Exists as an independent function to aid extensions
     """
     # * 'force' do not check for push race,
     # * if we don't push anything, there are nothing to check.
     if not pushop.force and pushop.outgoing.missingheads:
         allowunrelated = 'related' in bundler.capabilities.get('checkheads', ())
         emptyremote = pushop.pushbranchmap is None
         if not allowunrelated or emptyremote:
             bundler.newpart('check:heads', data=iter(pushop.remoteheads))
         else:
             affected = set()
             for branch, heads in pushop.pushbranchmap.iteritems():
                 remoteheads, newheads, unsyncedheads, discardedheads = heads
                 if remoteheads is not None:
                     remote = set(remoteheads)
                     affected |= set(discardedheads) & remote
                     affected |= remote - set(newheads)
             if affected:
                 data = iter(sorted(affected))
                 bundler.newpart('check:updated-heads', data=data)
 
 @b2partsgenerator('changeset')
 def _pushb2ctx(pushop, bundler):
     """handle changegroup push through bundle2
 
     addchangegroup result is stored in the ``pushop.cgresult`` attribute.
     """
     if 'changesets' in pushop.stepsdone:
         return
     pushop.stepsdone.add('changesets')
     # Send known heads to the server for race detection.
     if not _pushcheckoutgoing(pushop):
         return
     pushop.repo.prepushoutgoinghooks(pushop)
 
     _pushb2ctxcheckheads(pushop, bundler)
 
     b2caps = bundle2.bundle2caps(pushop.remote)
     version = '01'
     cgversions = b2caps.get('changegroup')
     if cgversions:  # 3.1 and 3.2 ship with an empty value
         cgversions = [v for v in cgversions
                       if v in changegroup.supportedoutgoingversions(
                           pushop.repo)]
         if not cgversions:
             raise ValueError(_('no common changegroup version'))
         version = max(cgversions)
     cgstream = changegroup.makestream(pushop.repo, pushop.outgoing, version,
                                       'push')
     cgpart = bundler.newpart('changegroup', data=cgstream)
     if cgversions:
         cgpart.addparam('version', version)
     if 'treemanifest' in pushop.repo.requirements:
         cgpart.addparam('treemanifest', '1')
     def handlereply(op):
         """extract addchangegroup returns from server reply"""
         cgreplies = op.records.getreplies(cgpart.id)
         assert len(cgreplies['changegroup']) == 1
         pushop.cgresult = cgreplies['changegroup'][0]['return']
     return handlereply
 
 @b2partsgenerator('phase')
 def _pushb2phases(pushop, bundler):
     """handle phase push through bundle2"""
     if 'phases' in pushop.stepsdone:
         return
     b2caps = bundle2.bundle2caps(pushop.remote)
     if not 'pushkey' in b2caps:
         return
     pushop.stepsdone.add('phases')
     part2node = []
 
     def handlefailure(pushop, exc):
         targetid = int(exc.partid)
         for partid, node in part2node:
             if partid == targetid:
                 raise error.Abort(_('updating %s to public failed') % node)
 
     enc = pushkey.encode
     for newremotehead in pushop.outdatedphases:
         part = bundler.newpart('pushkey')
         part.addparam('namespace', enc('phases'))
         part.addparam('key', enc(newremotehead.hex()))
         part.addparam('old', enc(str(phases.draft)))
         part.addparam('new', enc(str(phases.public)))
         part2node.append((part.id, newremotehead))
         pushop.pkfailcb[part.id] = handlefailure
 
     def handlereply(op):
         for partid, node in part2node:
             partrep = op.records.getreplies(partid)
             results = partrep['pushkey']
             assert len(results) <= 1
             msg = None
             if not results:
                 msg = _('server ignored update of %s to public!\n') % node
             elif not int(results[0]['return']):
                 msg = _('updating %s to public failed!\n') % node
             if msg is not None:
                 pushop.ui.warn(msg)
     return handlereply
 
 @b2partsgenerator('obsmarkers')
 def _pushb2obsmarkers(pushop, bundler):
     if 'obsmarkers' in pushop.stepsdone:
         return
     remoteversions = bundle2.obsmarkersversion(bundler.capabilities)
     if obsolete.commonversion(remoteversions) is None:
         return
     pushop.stepsdone.add('obsmarkers')
     if pushop.outobsmarkers:
         markers = sorted(pushop.outobsmarkers)
         bundle2.buildobsmarkerspart(bundler, markers)
 
 @b2partsgenerator('bookmarks')
 def _pushb2bookmarks(pushop, bundler):
     """handle bookmark push through bundle2"""
     if 'bookmarks' in pushop.stepsdone:
         return
     b2caps = bundle2.bundle2caps(pushop.remote)
     if 'pushkey' not in b2caps:
         return
     pushop.stepsdone.add('bookmarks')
     part2book = []
     enc = pushkey.encode
 
     def handlefailure(pushop, exc):
         targetid = int(exc.partid)
         for partid, book, action in part2book:
             if partid == targetid:
                 raise error.Abort(bookmsgmap[action][1].rstrip() % book)
         # we should not be called for part we did not generated
         assert False
 
     for book, old, new in pushop.outbookmarks:
         part = bundler.newpart('pushkey')
         part.addparam('namespace', enc('bookmarks'))
         part.addparam('key', enc(book))
         part.addparam('old', enc(old))
         part.addparam('new', enc(new))
         action = 'update'
         if not old:
             action = 'export'
         elif not new:
             action = 'delete'
         part2book.append((part.id, book, action))
         pushop.pkfailcb[part.id] = handlefailure
 
     def handlereply(op):
         ui = pushop.ui
         for partid, book, action in part2book:
             partrep = op.records.getreplies(partid)
             results = partrep['pushkey']
             assert len(results) <= 1
             if not results:
                 pushop.ui.warn(_('server ignored bookmark %s update\n') % book)
             else:
                 ret = int(results[0]['return'])
                 if ret:
                     ui.status(bookmsgmap[action][0] % book)
                 else:
                     ui.warn(bookmsgmap[action][1] % book)
                     if pushop.bkresult is not None:
                         pushop.bkresult = 1
     return handlereply
 
 @b2partsgenerator('pushvars', idx=0)
 def _getbundlesendvars(pushop, bundler):
     '''send shellvars via bundle2'''
     pushvars = pushop.pushvars
     if pushvars:
         shellvars = {}
         for raw in pushvars:
             if '=' not in raw:
                 msg = ("unable to parse variable '%s', should follow "
                         "'KEY=VALUE' or 'KEY=' format")
                 raise error.Abort(msg % raw)
             k, v = raw.split('=', 1)
             shellvars[k] = v
 
         part = bundler.newpart('pushvars')
 
         for key, value in shellvars.iteritems():
             part.addparam(key, value, mandatory=False)
 
 def _pushbundle2(pushop):
     """push data to the remote using bundle2
 
     The only currently supported type of data is changegroup but this will
     evolve in the future."""
     bundler = bundle2.bundle20(pushop.ui, bundle2.bundle2caps(pushop.remote))
     pushback = (pushop.trmanager
                 and pushop.ui.configbool('experimental', 'bundle2.pushback'))
 
     # create reply capability
     capsblob = bundle2.encodecaps(bundle2.getrepocaps(pushop.repo,
                                                       allowpushback=pushback))
     bundler.newpart('replycaps', data=capsblob)
     replyhandlers = []
     for partgenname in b2partsgenorder:
         partgen = b2partsgenmapping[partgenname]
         ret = partgen(pushop, bundler)
         if callable(ret):
             replyhandlers.append(ret)
     # do not push if nothing to push
     if bundler.nbparts <= 1:
         return
     stream = util.chunkbuffer(bundler.getchunks())
     try:
         try:
             reply = pushop.remote.unbundle(
                 stream, ['force'], pushop.remote.url())
         except error.BundleValueError as exc:
             raise error.Abort(_('missing support for %s') % exc)
         try:
             trgetter = None
             if pushback:
                 trgetter = pushop.trmanager.transaction
             op = bundle2.processbundle(pushop.repo, reply, trgetter)
         except error.BundleValueError as exc:
             raise error.Abort(_('missing support for %s') % exc)
         except bundle2.AbortFromPart as exc:
             pushop.ui.status(_('remote: %s\n') % exc)
             if exc.hint is not None:
                 pushop.ui.status(_('remote: %s\n') % ('(%s)' % exc.hint))
             raise error.Abort(_('push failed on remote'))
     except error.PushkeyFailed as exc:
         partid = int(exc.partid)
         if partid not in pushop.pkfailcb:
             raise
         pushop.pkfailcb[partid](pushop, exc)
     for rephand in replyhandlers:
         rephand(op)
 
 def _pushchangeset(pushop):
     """Make the actual push of changeset bundle to remote repo"""
     if 'changesets' in pushop.stepsdone:
         return
     pushop.stepsdone.add('changesets')
     if not _pushcheckoutgoing(pushop):
         return
 
     # Should have verified this in push().
     assert pushop.remote.capable('unbundle')
 
     pushop.repo.prepushoutgoinghooks(pushop)
     outgoing = pushop.outgoing
     # TODO: get bundlecaps from remote
     bundlecaps = None
     # create a changegroup from local
     if pushop.revs is None and not (outgoing.excluded
                             or pushop.repo.changelog.filteredrevs):
         # push everything,
         # use the fast path, no race possible on push
         cg = changegroup.makechangegroup(pushop.repo, outgoing, '01', 'push',
                 fastpath=True, bundlecaps=bundlecaps)
     else:
-        cg = changegroup.getchangegroup(pushop.repo, 'push', outgoing,
-                                        bundlecaps=bundlecaps)
+        cg = changegroup.makechangegroup(pushop.repo, outgoing, '01',
+                                        'push', bundlecaps=bundlecaps)
 
     # apply changegroup to remote
     # local repo finds heads on server, finds out what
     # revs it must push. once revs transferred, if server
     # finds it has different heads (someone else won
     # commit/push race), server aborts.
     if pushop.force:
         remoteheads = ['force']
     else:
         remoteheads = pushop.remoteheads
     # ssh: return remote's addchangegroup()
     # http: return remote's addchangegroup() or 0 for error
     pushop.cgresult = pushop.remote.unbundle(cg, remoteheads,
                                         pushop.repo.url())
 
 def _pushsyncphase(pushop):
     """synchronise phase information locally and remotely"""
     cheads = pushop.commonheads
     # even when we don't push, exchanging phase data is useful
     remotephases = pushop.remote.listkeys('phases')
     if (pushop.ui.configbool('ui', '_usedassubrepo')
         and remotephases    # server supports phases
         and pushop.cgresult is None # nothing was pushed
         and remotephases.get('publishing', False)):
         # When:
         # - this is a subrepo push
         # - and remote support phase
         # - and no changeset was pushed
         # - and remote is publishing
         # We may be in issue 3871 case!
         # We drop the possible phase synchronisation done by
         # courtesy to publish changesets possibly locally draft
         # on the remote.
         remotephases = {'publishing': 'True'}
     if not remotephases: # old server or public only reply from non-publishing
         _localphasemove(pushop, cheads)
         # don't push any phase data as there is nothing to push
     else:
         ana = phases.analyzeremotephases(pushop.repo, cheads,
                                          remotephases)
         pheads, droots = ana
         ### Apply remote phase on local
         if remotephases.get('publishing', False):
             _localphasemove(pushop, cheads)
         else: # publish = False
             _localphasemove(pushop, pheads)
             _localphasemove(pushop, cheads, phases.draft)
         ### Apply local phase on remote
 
         if pushop.cgresult:
             if 'phases' in pushop.stepsdone:
                 # phases already pushed though bundle2
                 return
             outdated = pushop.outdatedphases
         else:
             outdated = pushop.fallbackoutdatedphases
 
         pushop.stepsdone.add('phases')
 
         # filter heads already turned public by the push
         outdated = [c for c in outdated if c.node() not in pheads]
         # fallback to independent pushkey command
         for newremotehead in outdated:
             r = pushop.remote.pushkey('phases',
                                       newremotehead.hex(),
                                       str(phases.draft),
                                       str(phases.public))
             if not r:
                 pushop.ui.warn(_('updating %s to public failed!\n')
                                % newremotehead)
 
 def _localphasemove(pushop, nodes, phase=phases.public):
     """move <nodes> to <phase> in the local source repo"""
     if pushop.trmanager:
         phases.advanceboundary(pushop.repo,
                                pushop.trmanager.transaction(),
                                phase,
                                nodes)
     else:
         # repo is not locked, do not change any phases!
         # Informs the user that phases should have been moved when
         # applicable.
         actualmoves = [n for n in nodes if phase < pushop.repo[n].phase()]
         phasestr = phases.phasenames[phase]
         if actualmoves:
             pushop.ui.status(_('cannot lock source repo, skipping '
                                'local %s phase update\n') % phasestr)
 
 def _pushobsolete(pushop):
     """utility function to push obsolete markers to a remote"""
     if 'obsmarkers' in pushop.stepsdone:
         return
     repo = pushop.repo
     remote = pushop.remote
     pushop.stepsdone.add('obsmarkers')
     if pushop.outobsmarkers:
         pushop.ui.debug('try to push obsolete markers to remote\n')
         rslts = []
         remotedata = obsolete._pushkeyescape(sorted(pushop.outobsmarkers))
         for key in sorted(remotedata, reverse=True):
             # reverse sort to ensure we end with dump0
             data = remotedata[key]
             rslts.append(remote.pushkey('obsolete', key, '', data))
         if [r for r in rslts if not r]:
             msg = _('failed to push some obsolete markers!\n')
             repo.ui.warn(msg)
 
 def _pushbookmark(pushop):
     """Update bookmark position on remote"""
     if pushop.cgresult == 0 or 'bookmarks' in pushop.stepsdone:
         return
     pushop.stepsdone.add('bookmarks')
     ui = pushop.ui
     remote = pushop.remote
 
     for b, old, new in pushop.outbookmarks:
         action = 'update'
         if not old:
             action = 'export'
         elif not new:
             action = 'delete'
         if remote.pushkey('bookmarks', b, old, new):
             ui.status(bookmsgmap[action][0] % b)
         else:
             ui.warn(bookmsgmap[action][1] % b)
             # discovery can have set the value form invalid entry
             if pushop.bkresult is not None:
                 pushop.bkresult = 1
 
 class pulloperation(object):
     """A object that represent a single pull operation
 
     It purpose is to carry pull related state and very common operation.
 
     A new should be created at the beginning of each pull and discarded
     afterward.
     """
 
     def __init__(self, repo, remote, heads=None, force=False, bookmarks=(),
                  remotebookmarks=None, streamclonerequested=None):
         # repo we pull into
         self.repo = repo
         # repo we pull from
         self.remote = remote
         # revision we try to pull (None is "all")
         self.heads = heads
         # bookmark pulled explicitly
         self.explicitbookmarks = [repo._bookmarks.expandname(bookmark)
                                   for bookmark in bookmarks]
         # do we force pull?
         self.force = force
         # whether a streaming clone was requested
         self.streamclonerequested = streamclonerequested
         # transaction manager
         self.trmanager = None
         # set of common changeset between local and remote before pull
         self.common = None
         # set of pulled head
         self.rheads = None
         # list of missing changeset to fetch remotely
         self.fetch = None
         # remote bookmarks data
         self.remotebookmarks = remotebookmarks
         # result of changegroup pulling (used as return code by pull)
         self.cgresult = None
         # list of step already done
         self.stepsdone = set()
         # Whether we attempted a clone from pre-generated bundles.
         self.clonebundleattempted = False
 
     @util.propertycache
     def pulledsubset(self):
         """heads of the set of changeset target by the pull"""
         # compute target subset
         if self.heads is None:
             # We pulled every thing possible
             # sync on everything common
             c = set(self.common)
             ret = list(self.common)
             for n in self.rheads:
                 if n not in c:
                     ret.append(n)
             return ret
         else:
             # We pulled a specific subset
             # sync on this subset
             return self.heads
 
     @util.propertycache
     def canusebundle2(self):
         return not _forcebundle1(self)
 
     @util.propertycache
     def remotebundle2caps(self):
         return bundle2.bundle2caps(self.remote)
 
     def gettransaction(self):
         # deprecated; talk to trmanager directly
         return self.trmanager.transaction()
 
 class transactionmanager(util.transactional):
     """An object to manage the life cycle of a transaction
 
     It creates the transaction on demand and calls the appropriate hooks when
     closing the transaction."""
     def __init__(self, repo, source, url):
         self.repo = repo
         self.source = source
         self.url = url
         self._tr = None
 
     def transaction(self):
         """Return an open transaction object, constructing if necessary"""
         if not self._tr:
             trname = '%s\n%s' % (self.source, util.hidepassword(self.url))
             self._tr = self.repo.transaction(trname)
             self._tr.hookargs['source'] = self.source
             self._tr.hookargs['url'] = self.url
         return self._tr
 
     def close(self):
         """close transaction if created"""
         if self._tr is not None:
             self._tr.close()
 
     def release(self):
         """release transaction if created"""
         if self._tr is not None:
             self._tr.release()
 
 def pull(repo, remote, heads=None, force=False, bookmarks=(), opargs=None,
          streamclonerequested=None):
     """Fetch repository data from a remote.
 
     This is the main function used to retrieve data from a remote repository.
 
     ``repo`` is the local repository to clone into.
     ``remote`` is a peer instance.
     ``heads`` is an iterable of revisions we want to pull. ``None`` (the
     default) means to pull everything from the remote.
     ``bookmarks`` is an iterable of bookmarks requesting to be pulled. By
     default, all remote bookmarks are pulled.
     ``opargs`` are additional keyword arguments to pass to ``pulloperation``
     initialization.
     ``streamclonerequested`` is a boolean indicating whether a "streaming
     clone" is requested. A "streaming clone" is essentially a raw file copy
     of revlogs from the server. This only works when the local repository is
     empty. The default value of ``None`` means to respect the server
     configuration for preferring stream clones.
 
     Returns the ``pulloperation`` created for this pull.
     """
     if opargs is None:
         opargs = {}
     pullop = pulloperation(repo, remote, heads, force, bookmarks=bookmarks,
                            streamclonerequested=streamclonerequested, **opargs)
 
     peerlocal = pullop.remote.local()
     if peerlocal:
         missing = set(peerlocal.requirements) - pullop.repo.supported
         if missing:
             msg = _("required features are not"
                     " supported in the destination:"
                     " %s") % (', '.join(sorted(missing)))
             raise error.Abort(msg)
 
     wlock = lock = None
     try:
         wlock = pullop.repo.wlock()
         lock = pullop.repo.lock()
         pullop.trmanager = transactionmanager(repo, 'pull', remote.url())
         streamclone.maybeperformlegacystreamclone(pullop)
         # This should ideally be in _pullbundle2(). However, it needs to run
         # before discovery to avoid extra work.
         _maybeapplyclonebundle(pullop)
         _pulldiscovery(pullop)
         if pullop.canusebundle2:
             _pullbundle2(pullop)
         _pullchangeset(pullop)
         _pullphase(pullop)
         _pullbookmarks(pullop)
         _pullobsolete(pullop)
         pullop.trmanager.close()
     finally:
         lockmod.release(pullop.trmanager, lock, wlock)
 
     return pullop
 
 # list of steps to perform discovery before pull
 pulldiscoveryorder = []
 
 # Mapping between step name and function
 #
 # This exists to help extensions wrap steps if necessary
 pulldiscoverymapping = {}
 
 def pulldiscovery(stepname):
     """decorator for function performing discovery before pull
 
     The function is added to the step -> function mapping and appended to the
     list of steps.  Beware that decorated function will be added in order (this
     may matter).
 
     You can only use this decorator for a new step, if you want to wrap a step
     from an extension, change the pulldiscovery dictionary directly."""
     def dec(func):
         assert stepname not in pulldiscoverymapping
         pulldiscoverymapping[stepname] = func
         pulldiscoveryorder.append(stepname)
         return func
     return dec
 
 def _pulldiscovery(pullop):
     """Run all discovery steps"""
     for stepname in pulldiscoveryorder:
         step = pulldiscoverymapping[stepname]
         step(pullop)
 
 @pulldiscovery('b1:bookmarks')
 def _pullbookmarkbundle1(pullop):
     """fetch bookmark data in bundle1 case
 
     If not using bundle2, we have to fetch bookmarks before changeset
     discovery to reduce the chance and impact of race conditions."""
     if pullop.remotebookmarks is not None:
         return
     if pullop.canusebundle2 and 'listkeys' in pullop.remotebundle2caps:
         # all known bundle2 servers now support listkeys, but lets be nice with
         # new implementation.
         return
     pullop.remotebookmarks = pullop.remote.listkeys('bookmarks')
 
 
 @pulldiscovery('changegroup')
 def _pulldiscoverychangegroup(pullop):
     """discovery phase for the pull
 
     Current handle changeset discovery only, will change handle all discovery
     at some point."""
     tmp = discovery.findcommonincoming(pullop.repo,
                                        pullop.remote,
                                        heads=pullop.heads,
                                        force=pullop.force)
     common, fetch, rheads = tmp
     nm = pullop.repo.unfiltered().changelog.nodemap
     if fetch and rheads:
         # If a remote heads in filtered locally, lets drop it from the unknown
         # remote heads and put in back in common.
         #
         # This is a hackish solution to catch most of "common but locally
         # hidden situation".  We do not performs discovery on unfiltered
         # repository because it end up doing a pathological amount of round
         # trip for w huge amount of changeset we do not care about.
         #
         # If a set of such "common but filtered" changeset exist on the server
         # but are not including a remote heads, we'll not be able to detect it,
         scommon = set(common)
         filteredrheads = []
         for n in rheads:
             if n in nm:
                 if n not in scommon:
                     common.append(n)
             else:
                 filteredrheads.append(n)
         if not filteredrheads:
             fetch = []
         rheads = filteredrheads
     pullop.common = common
     pullop.fetch = fetch
     pullop.rheads = rheads
 
 def _pullbundle2(pullop):
     """pull data using bundle2
 
     For now, the only supported data are changegroup."""
     kwargs = {'bundlecaps': caps20to10(pullop.repo)}
 
     # At the moment we don't do stream clones over bundle2. If that is
     # implemented then here's where the check for that will go.
     streaming = False
 
     # pulling changegroup
     pullop.stepsdone.add('changegroup')
 
     kwargs['common'] = pullop.common
     kwargs['heads'] = pullop.heads or pullop.rheads
     kwargs['cg'] = pullop.fetch
     if 'listkeys' in pullop.remotebundle2caps:
         kwargs['listkeys'] = ['phases']
         if pullop.remotebookmarks is None:
             # make sure to always includes bookmark data when migrating
             # `hg incoming --bundle` to using this function.
             kwargs['listkeys'].append('bookmarks')
 
     # If this is a full pull / clone and the server supports the clone bundles
     # feature, tell the server whether we attempted a clone bundle. The
     # presence of this flag indicates the client supports clone bundles. This
     # will enable the server to treat clients that support clone bundles
     # differently from those that don't.
     if (pullop.remote.capable('clonebundles')
         and pullop.heads is None and list(pullop.common) == [nullid]):
         kwargs['cbattempted'] = pullop.clonebundleattempted
 
     if streaming:
         pullop.repo.ui.status(_('streaming all changes\n'))
     elif not pullop.fetch:
         pullop.repo.ui.status(_("no changes found\n"))
         pullop.cgresult = 0
     else:
         if pullop.heads is None and list(pullop.common) == [nullid]:
             pullop.repo.ui.status(_("requesting all changes\n"))
     if obsolete.isenabled(pullop.repo, obsolete.exchangeopt):
         remoteversions = bundle2.obsmarkersversion(pullop.remotebundle2caps)
         if obsolete.commonversion(remoteversions) is not None:
             kwargs['obsmarkers'] = True
             pullop.stepsdone.add('obsmarkers')
     _pullbundle2extraprepare(pullop, kwargs)
     bundle = pullop.remote.getbundle('pull', **pycompat.strkwargs(kwargs))
     try:
         op = bundle2.processbundle(pullop.repo, bundle, pullop.gettransaction)
     except bundle2.AbortFromPart as exc:
         pullop.repo.ui.status(_('remote: abort: %s\n') % exc)
         raise error.Abort(_('pull failed on remote'), hint=exc.hint)
     except error.BundleValueError as exc:
         raise error.Abort(_('missing support for %s') % exc)
 
     if pullop.fetch:
         pullop.cgresult = bundle2.combinechangegroupresults(op)
 
     # If the bundle had a phase-heads part, then phase exchange is already done
     if op.records['phase-heads']:
         pullop.stepsdone.add('phases')
 
     # processing phases change
     for namespace, value in op.records['listkeys']:
         if namespace == 'phases':
             _pullapplyphases(pullop, value)
 
     # processing bookmark update
     for namespace, value in op.records['listkeys']:
         if namespace == 'bookmarks':
             pullop.remotebookmarks = value
 
     # bookmark data were either already there or pulled in the bundle
     if pullop.remotebookmarks is not None:
         _pullbookmarks(pullop)
 
 def _pullbundle2extraprepare(pullop, kwargs):
     """hook function so that extensions can extend the getbundle call"""
     pass
 
 def _pullchangeset(pullop):
     """pull changeset from unbundle into the local repo"""
     # We delay the open of the transaction as late as possible so we
     # don't open transaction for nothing or you break future useful
     # rollback call
     if 'changegroup' in pullop.stepsdone:
         return
     pullop.stepsdone.add('changegroup')
     if not pullop.fetch:
         pullop.repo.ui.status(_("no changes found\n"))
         pullop.cgresult = 0
         return
     tr = pullop.gettransaction()
     if pullop.heads is None and list(pullop.common) == [nullid]:
         pullop.repo.ui.status(_("requesting all changes\n"))
     elif pullop.heads is None and pullop.remote.capable('changegroupsubset'):
         # issue1320, avoid a race if remote changed after discovery
         pullop.heads = pullop.rheads
 
     if pullop.remote.capable('getbundle'):
         # TODO: get bundlecaps from remote
         cg = pullop.remote.getbundle('pull', common=pullop.common,
                                      heads=pullop.heads or pullop.rheads)
     elif pullop.heads is None:
         cg = pullop.remote.changegroup(pullop.fetch, 'pull')
     elif not pullop.remote.capable('changegroupsubset'):
         raise error.Abort(_("partial pull cannot be done because "
                            "other repository doesn't support "
                            "changegroupsubset."))
     else:
         cg = pullop.remote.changegroupsubset(pullop.fetch, pullop.heads, 'pull')
     bundleop = bundle2.applybundle(pullop.repo, cg, tr, 'pull',
                                    pullop.remote.url())
     pullop.cgresult = bundle2.combinechangegroupresults(bundleop)
 
 def _pullphase(pullop):
     # Get remote phases data from remote
     if 'phases' in pullop.stepsdone:
         return
     remotephases = pullop.remote.listkeys('phases')
     _pullapplyphases(pullop, remotephases)
 
 def _pullapplyphases(pullop, remotephases):
     """apply phase movement from observed remote state"""
     if 'phases' in pullop.stepsdone:
         return
     pullop.stepsdone.add('phases')
     publishing = bool(remotephases.get('publishing', False))
     if remotephases and not publishing:
         # remote is new and non-publishing
         pheads, _dr = phases.analyzeremotephases(pullop.repo,
                                                  pullop.pulledsubset,
                                                  remotephases)
         dheads = pullop.pulledsubset
     else:
         # Remote is old or publishing all common changesets
         # should be seen as public
         pheads = pullop.pulledsubset
         dheads = []
     unfi = pullop.repo.unfiltered()
     phase = unfi._phasecache.phase
     rev = unfi.changelog.nodemap.get
     public = phases.public
     draft = phases.draft
 
     # exclude changesets already public locally and update the others
     pheads = [pn for pn in pheads if phase(unfi, rev(pn)) > public]
     if pheads:
         tr = pullop.gettransaction()
         phases.advanceboundary(pullop.repo, tr, public, pheads)
 
     # exclude changesets already draft locally and update the others
     dheads = [pn for pn in dheads if phase(unfi, rev(pn)) > draft]
     if dheads:
         tr = pullop.gettransaction()
         phases.advanceboundary(pullop.repo, tr, draft, dheads)
 
 def _pullbookmarks(pullop):
     """process the remote bookmark information to update the local one"""
     if 'bookmarks' in pullop.stepsdone:
         return
     pullop.stepsdone.add('bookmarks')
     repo = pullop.repo
     remotebookmarks = pullop.remotebookmarks
     remotebookmarks = bookmod.unhexlifybookmarks(remotebookmarks)
     bookmod.updatefromremote(repo.ui, repo, remotebookmarks,
                              pullop.remote.url(),
                              pullop.gettransaction,
                              explicit=pullop.explicitbookmarks)
 
 def _pullobsolete(pullop):
     """utility function to pull obsolete markers from a remote
 
     The `gettransaction` is function that return the pull transaction, creating
     one if necessary. We return the transaction to inform the calling code that
     a new transaction have been created (when applicable).
 
     Exists mostly to allow overriding for experimentation purpose"""
     if 'obsmarkers' in pullop.stepsdone:
         return
     pullop.stepsdone.add('obsmarkers')
     tr = None
     if obsolete.isenabled(pullop.repo, obsolete.exchangeopt):
         pullop.repo.ui.debug('fetching remote obsolete markers\n')
         remoteobs = pullop.remote.listkeys('obsolete')
         if 'dump0' in remoteobs:
             tr = pullop.gettransaction()
             markers = []
             for key in sorted(remoteobs, reverse=True):
                 if key.startswith('dump'):
                     data = util.b85decode(remoteobs[key])
                     version, newmarks = obsolete._readmarkers(data)
                     markers += newmarks
             if markers:
                 pullop.repo.obsstore.add(tr, markers)
             pullop.repo.invalidatevolatilesets()
     return tr
 
 def caps20to10(repo):
     """return a set with appropriate options to use bundle20 during getbundle"""
     caps = {'HG20'}
     capsblob = bundle2.encodecaps(bundle2.getrepocaps(repo))
     caps.add('bundle2=' + urlreq.quote(capsblob))
     return caps
 
 # List of names of steps to perform for a bundle2 for getbundle, order matters.
 getbundle2partsorder = []
 
 # Mapping between step name and function
 #
 # This exists to help extensions wrap steps if necessary
 getbundle2partsmapping = {}
 
 def getbundle2partsgenerator(stepname, idx=None):
     """decorator for function generating bundle2 part for getbundle
 
     The function is added to the step -> function mapping and appended to the
     list of steps.  Beware that decorated functions will be added in order
     (this may matter).
 
     You can only use this decorator for new steps, if you want to wrap a step
     from an extension, attack the getbundle2partsmapping dictionary directly."""
     def dec(func):
         assert stepname not in getbundle2partsmapping
         getbundle2partsmapping[stepname] = func
         if idx is None:
             getbundle2partsorder.append(stepname)
         else:
             getbundle2partsorder.insert(idx, stepname)
         return func
     return dec
 
 def bundle2requested(bundlecaps):
     if bundlecaps is not None:
         return any(cap.startswith('HG2') for cap in bundlecaps)
     return False
 
 def getbundlechunks(repo, source, heads=None, common=None, bundlecaps=None,
                     **kwargs):
     """Return chunks constituting a bundle's raw data.
 
     Could be a bundle HG10 or a bundle HG20 depending on bundlecaps
     passed.
 
     Returns an iterator over raw chunks (of varying sizes).
     """
     kwargs = pycompat.byteskwargs(kwargs)
     usebundle2 = bundle2requested(bundlecaps)
     # bundle10 case
     if not usebundle2:
         if bundlecaps and not kwargs.get('cg', True):
             raise ValueError(_('request for bundle10 must include changegroup'))
 
         if kwargs:
             raise ValueError(_('unsupported getbundle arguments: %s')
                              % ', '.join(sorted(kwargs.keys())))
         outgoing = _computeoutgoing(repo, heads, common)
         bundler = changegroup.getbundler('01', repo, bundlecaps)
         return changegroup.getsubsetraw(repo, outgoing, bundler, source)
 
     # bundle20 case
     b2caps = {}
     for bcaps in bundlecaps:
         if bcaps.startswith('bundle2='):
             blob = urlreq.unquote(bcaps[len('bundle2='):])
             b2caps.update(bundle2.decodecaps(blob))
     bundler = bundle2.bundle20(repo.ui, b2caps)
 
     kwargs['heads'] = heads
     kwargs['common'] = common
 
     for name in getbundle2partsorder:
         func = getbundle2partsmapping[name]
         func(bundler, repo, source, bundlecaps=bundlecaps, b2caps=b2caps,
              **pycompat.strkwargs(kwargs))
 
     return bundler.getchunks()
 
 @getbundle2partsgenerator('changegroup')
 def _getbundlechangegrouppart(bundler, repo, source, bundlecaps=None,
                               b2caps=None, heads=None, common=None, **kwargs):
     """add a changegroup part to the requested bundle"""
     cgstream = None
     if kwargs.get('cg', True):
         # build changegroup bundle here.
         version = '01'
         cgversions = b2caps.get('changegroup')
         if cgversions:  # 3.1 and 3.2 ship with an empty value
             cgversions = [v for v in cgversions
                           if v in changegroup.supportedoutgoingversions(repo)]
             if not cgversions:
                 raise ValueError(_('no common changegroup version'))
             version = max(cgversions)
         outgoing = _computeoutgoing(repo, heads, common)
         cgstream = changegroup.makestream(repo, outgoing, version, source,
                                           bundlecaps=bundlecaps)
 
     if cgstream:
         part = bundler.newpart('changegroup', data=cgstream)
         if cgversions:
             part.addparam('version', version)
         part.addparam('nbchanges', str(len(outgoing.missing)), mandatory=False)
         if 'treemanifest' in repo.requirements:
             part.addparam('treemanifest', '1')
 
 @getbundle2partsgenerator('listkeys')
 def _getbundlelistkeysparts(bundler, repo, source, bundlecaps=None,
                             b2caps=None, **kwargs):
     """add parts containing listkeys namespaces to the requested bundle"""
     listkeys = kwargs.get('listkeys', ())
     for namespace in listkeys:
         part = bundler.newpart('listkeys')
         part.addparam('namespace', namespace)
         keys = repo.listkeys(namespace).items()
         part.data = pushkey.encodekeys(keys)
 
 @getbundle2partsgenerator('obsmarkers')
 def _getbundleobsmarkerpart(bundler, repo, source, bundlecaps=None,
                             b2caps=None, heads=None, **kwargs):
     """add an obsolescence markers part to the requested bundle"""
     if kwargs.get('obsmarkers', False):
         if heads is None:
             heads = repo.heads()
         subset = [c.node() for c in repo.set('::%ln', heads)]
         markers = repo.obsstore.relevantmarkers(subset)
         markers = sorted(markers)
         bundle2.buildobsmarkerspart(bundler, markers)
 
 @getbundle2partsgenerator('hgtagsfnodes')
 def _getbundletagsfnodes(bundler, repo, source, bundlecaps=None,
                          b2caps=None, heads=None, common=None,
                          **kwargs):
     """Transfer the .hgtags filenodes mapping.
 
     Only values for heads in this bundle will be transferred.
 
     The part data consists of pairs of 20 byte changeset node and .hgtags
     filenodes raw values.
     """
     # Don't send unless:
     # - changeset are being exchanged,
     # - the client supports it.
     if not (kwargs.get('cg', True) and 'hgtagsfnodes' in b2caps):
         return
 
     outgoing = _computeoutgoing(repo, heads, common)
     bundle2.addparttagsfnodescache(repo, bundler, outgoing)
 
 def _getbookmarks(repo, **kwargs):
     """Returns bookmark to node mapping.
 
     This function is primarily used to generate `bookmarks` bundle2 part.
     It is a separate function in order to make it easy to wrap it
     in extensions. Passing `kwargs` to the function makes it easy to
     add new parameters in extensions.
     """
 
     return dict(bookmod.listbinbookmarks(repo))
 
 def check_heads(repo, their_heads, context):
     """check if the heads of a repo have been modified
 
     Used by peer for unbundling.
     """
     heads = repo.heads()
     heads_hash = hashlib.sha1(''.join(sorted(heads))).digest()
     if not (their_heads == ['force'] or their_heads == heads or
             their_heads == ['hashed', heads_hash]):
         # someone else committed/pushed/unbundled while we
         # were transferring data
         raise error.PushRaced('repository changed while %s - '
                               'please try again' % context)
 
 def unbundle(repo, cg, heads, source, url):
     """Apply a bundle to a repo.
 
     this function makes sure the repo is locked during the application and have
     mechanism to check that no push race occurred between the creation of the
     bundle and its application.
 
     If the push was raced as PushRaced exception is raised."""
     r = 0
     # need a transaction when processing a bundle2 stream
     # [wlock, lock, tr] - needs to be an array so nested functions can modify it
     lockandtr = [None, None, None]
     recordout = None
     # quick fix for output mismatch with bundle2 in 3.4
     captureoutput = repo.ui.configbool('experimental', 'bundle2-output-capture')
     if url.startswith('remote:http:') or url.startswith('remote:https:'):
         captureoutput = True
     try:
         # note: outside bundle1, 'heads' is expected to be empty and this
         # 'check_heads' call wil be a no-op
         check_heads(repo, heads, 'uploading changes')
         # push can proceed
         if not isinstance(cg, bundle2.unbundle20):
             # legacy case: bundle1 (changegroup 01)
             txnname = "\n".join([source, util.hidepassword(url)])
             with repo.lock(), repo.transaction(txnname) as tr:
                 op = bundle2.applybundle(repo, cg, tr, source, url)
                 r = bundle2.combinechangegroupresults(op)
         else:
             r = None
             try:
                 def gettransaction():
                     if not lockandtr[2]:
                         lockandtr[0] = repo.wlock()
                         lockandtr[1] = repo.lock()
                         lockandtr[2] = repo.transaction(source)
                         lockandtr[2].hookargs['source'] = source
                         lockandtr[2].hookargs['url'] = url
                         lockandtr[2].hookargs['bundle2'] = '1'
                     return lockandtr[2]
 
                 # Do greedy locking by default until we're satisfied with lazy
                 # locking.
                 if not repo.ui.configbool('experimental', 'bundle2lazylocking'):
                     gettransaction()
 
                 op = bundle2.bundleoperation(repo, gettransaction,
                                              captureoutput=captureoutput)
                 try:
                     op = bundle2.processbundle(repo, cg, op=op)
                 finally:
                     r = op.reply
                     if captureoutput and r is not None:
                         repo.ui.pushbuffer(error=True, subproc=True)
                         def recordout(output):
                             r.newpart('output', data=output, mandatory=False)
                 if lockandtr[2] is not None:
                     lockandtr[2].close()
             except BaseException as exc:
                 exc.duringunbundle2 = True
                 if captureoutput and r is not None:
                     parts = exc._bundle2salvagedoutput = r.salvageoutput()
                     def recordout(output):
                         part = bundle2.bundlepart('output', data=output,
                                                   mandatory=False)
                         parts.append(part)
                 raise
     finally:
         lockmod.release(lockandtr[2], lockandtr[1], lockandtr[0])
         if recordout is not None:
             recordout(repo.ui.popbuffer())
     return r
 
 def _maybeapplyclonebundle(pullop):
     """Apply a clone bundle from a remote, if possible."""
 
     repo = pullop.repo
     remote = pullop.remote
 
     if not repo.ui.configbool('ui', 'clonebundles'):
         return
 
     # Only run if local repo is empty.
     if len(repo):
         return
 
     if pullop.heads:
         return
 
     if not remote.capable('clonebundles'):
         return
 
     res = remote._call('clonebundles')
 
     # If we call the wire protocol command, that's good enough to record the
     # attempt.
     pullop.clonebundleattempted = True
 
     entries = parseclonebundlesmanifest(repo, res)
     if not entries:
         repo.ui.note(_('no clone bundles available on remote; '
                        'falling back to regular clone\n'))
         return
 
     entries = filterclonebundleentries(repo, entries)
     if not entries:
         # There is a thundering herd concern here. However, if a server
         # operator doesn't advertise bundles appropriate for its clients,
         # they deserve what's coming. Furthermore, from a client's
         # perspective, no automatic fallback would mean not being able to
         # clone!
         repo.ui.warn(_('no compatible clone bundles available on server; '
                        'falling back to regular clone\n'))
         repo.ui.warn(_('(you may want to report this to the server '
                        'operator)\n'))
         return
 
     entries = sortclonebundleentries(repo.ui, entries)
 
     url = entries[0]['URL']
     repo.ui.status(_('applying clone bundle from %s\n') % url)
     if trypullbundlefromurl(repo.ui, repo, url):
         repo.ui.status(_('finished applying clone bundle\n'))
     # Bundle failed.
     #
     # We abort by default to avoid the thundering herd of
     # clients flooding a server that was expecting expensive
     # clone load to be offloaded.
     elif repo.ui.configbool('ui', 'clonebundlefallback'):
         repo.ui.warn(_('falling back to normal clone\n'))
     else:
         raise error.Abort(_('error applying bundle'),
                           hint=_('if this error persists, consider contacting '
                                  'the server operator or disable clone '
                                  'bundles via '
                                  '"--config ui.clonebundles=false"'))
 
 def parseclonebundlesmanifest(repo, s):
     """Parses the raw text of a clone bundles manifest.
 
     Returns a list of dicts. The dicts have a ``URL`` key corresponding
     to the URL and other keys are the attributes for the entry.
     """
     m = []
     for line in s.splitlines():
         fields = line.split()
         if not fields:
             continue
         attrs = {'URL': fields[0]}
         for rawattr in fields[1:]:
             key, value = rawattr.split('=', 1)
             key = urlreq.unquote(key)
             value = urlreq.unquote(value)
             attrs[key] = value
 
             # Parse BUNDLESPEC into components. This makes client-side
             # preferences easier to specify since you can prefer a single
             # component of the BUNDLESPEC.
             if key == 'BUNDLESPEC':
                 try:
                     comp, version, params = parsebundlespec(repo, value,
                                                             externalnames=True)
                     attrs['COMPRESSION'] = comp
                     attrs['VERSION'] = version
                 except error.InvalidBundleSpecification:
                     pass
                 except error.UnsupportedBundleSpecification:
                     pass
 
         m.append(attrs)
 
     return m
 
 def filterclonebundleentries(repo, entries):
     """Remove incompatible clone bundle manifest entries.
 
     Accepts a list of entries parsed with ``parseclonebundlesmanifest``
     and returns a new list consisting of only the entries that this client
     should be able to apply.
 
     There is no guarantee we'll be able to apply all returned entries because
     the metadata we use to filter on may be missing or wrong.
     """
     newentries = []
     for entry in entries:
         spec = entry.get('BUNDLESPEC')
         if spec:
             try:
                 parsebundlespec(repo, spec, strict=True)
             except error.InvalidBundleSpecification as e:
                 repo.ui.debug(str(e) + '\n')
                 continue
             except error.UnsupportedBundleSpecification as e:
                 repo.ui.debug('filtering %s because unsupported bundle '
                               'spec: %s\n' % (entry['URL'], str(e)))
                 continue
 
         if 'REQUIRESNI' in entry and not sslutil.hassni:
             repo.ui.debug('filtering %s because SNI not supported\n' %
                           entry['URL'])
             continue
 
         newentries.append(entry)
 
     return newentries
 
 class clonebundleentry(object):
     """Represents an item in a clone bundles manifest.
 
     This rich class is needed to support sorting since sorted() in Python 3
     doesn't support ``cmp`` and our comparison is complex enough that ``key=``
     won't work.
     """
 
     def __init__(self, value, prefers):
         self.value = value
         self.prefers = prefers
 
     def _cmp(self, other):
         for prefkey, prefvalue in self.prefers:
             avalue = self.value.get(prefkey)
             bvalue = other.value.get(prefkey)
 
             # Special case for b missing attribute and a matches exactly.
             if avalue is not None and bvalue is None and avalue == prefvalue:
                 return -1
 
             # Special case for a missing attribute and b matches exactly.
             if bvalue is not None and avalue is None and bvalue == prefvalue:
                 return 1
 
             # We can't compare unless attribute present on both.
             if avalue is None or bvalue is None:
                 continue
 
             # Same values should fall back to next attribute.
             if avalue == bvalue:
                 continue
 
             # Exact matches come first.
             if avalue == prefvalue:
                 return -1
             if bvalue == prefvalue:
                 return 1
 
             # Fall back to next attribute.
             continue
 
         # If we got here we couldn't sort by attributes and prefers. Fall
         # back to index order.
         return 0
 
     def __lt__(self, other):
         return self._cmp(other) < 0
 
     def __gt__(self, other):
         return self._cmp(other) > 0
 
     def __eq__(self, other):
         return self._cmp(other) == 0
 
     def __le__(self, other):
         return self._cmp(other) <= 0
 
     def __ge__(self, other):
         return self._cmp(other) >= 0
 
     def __ne__(self, other):
         return self._cmp(other) != 0
 
 def sortclonebundleentries(ui, entries):
     prefers = ui.configlist('ui', 'clonebundleprefers')
     if not prefers:
         return list(entries)
 
     prefers = [p.split('=', 1) for p in prefers]
 
     items = sorted(clonebundleentry(v, prefers) for v in entries)
     return [i.value for i in items]
 
 def trypullbundlefromurl(ui, repo, url):
     """Attempt to apply a bundle from a URL."""
     with repo.lock(), repo.transaction('bundleurl') as tr:
         try:
             fh = urlmod.open(ui, url)
             cg = readbundle(ui, fh, 'stream')
 
             if isinstance(cg, streamclone.streamcloneapplier):
                 cg.apply(repo)
             else:
                 bundle2.applybundle(repo, cg, tr, 'clonebundles', url)
             return True
         except urlerr.httperror as e:
             ui.warn(_('HTTP error fetching bundle: %s\n') % str(e))
         except urlerr.urlerror as e:
             ui.warn(_('error fetching bundle: %s\n') % e.reason)
 
         return False

tests/test-bundle2-format.t

@@ -1,1233 +1,1234 b''
 This test is dedicated to test the bundle2 container format
 
 It test multiple existing parts to test different feature of the container. You
 probably do not need to touch this test unless you change the binary encoding
 of the bundle2 format itself.
 
 Create an extension to test bundle2 API
 
   $ cat > bundle2.py << EOF
   > """A small extension to test bundle2 implementation
   > 
   > This extension allows detailed testing of the various bundle2 API and
   > behaviors.
   > """
   > import gc
   > import os
   > import sys
   > from mercurial import util
   > from mercurial import bundle2
   > from mercurial import scmutil
   > from mercurial import discovery
   > from mercurial import changegroup
   > from mercurial import error
   > from mercurial import obsolete
   > from mercurial import registrar
   > 
   > 
   > try:
   >     import msvcrt
   >     msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
   >     msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
   >     msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY)
   > except ImportError:
   >     pass
   > 
   > cmdtable = {}
   > command = registrar.command(cmdtable)
   > 
   > ELEPHANTSSONG = """Patali Dirapata, Cromda Cromda Ripalo, Pata Pata, Ko Ko Ko
   > Bokoro Dipoulito, Rondi Rondi Pepino, Pata Pata, Ko Ko Ko
   > Emana Karassoli, Loucra Loucra Ponponto, Pata Pata, Ko Ko Ko."""
   > assert len(ELEPHANTSSONG) == 178 # future test say 178 bytes, trust it.
   > 
   > @bundle2.parthandler('test:song')
   > def songhandler(op, part):
   >     """handle a "test:song" bundle2 part, printing the lyrics on stdin"""
   >     op.ui.write('The choir starts singing:\n')
   >     verses = 0
   >     for line in part.read().split('\n'):
   >         op.ui.write('    %s\n' % line)
   >         verses += 1
   >     op.records.add('song', {'verses': verses})
   > 
   > @bundle2.parthandler('test:ping')
   > def pinghandler(op, part):
   >     op.ui.write('received ping request (id %i)\n' % part.id)
   >     if op.reply is not None and 'ping-pong' in op.reply.capabilities:
   >         op.ui.write_err('replying to ping request (id %i)\n' % part.id)
   >         op.reply.newpart('test:pong', [('in-reply-to', str(part.id))],
   >                          mandatory=False)
   > 
   > @bundle2.parthandler('test:debugreply')
   > def debugreply(op, part):
   >     """print data about the capacity of the bundle reply"""
   >     if op.reply is None:
   >         op.ui.write('debugreply: no reply\n')
   >     else:
   >         op.ui.write('debugreply: capabilities:\n')
   >         for cap in sorted(op.reply.capabilities):
   >             op.ui.write('debugreply:     %r\n' % cap)
   >             for val in op.reply.capabilities[cap]:
   >                 op.ui.write('debugreply:         %r\n' % val)
   > 
   > @command(b'bundle2',
   >          [('', 'param', [], 'stream level parameter'),
   >           ('', 'unknown', False, 'include an unknown mandatory part in the bundle'),
   >           ('', 'unknownparams', False, 'include an unknown part parameters in the bundle'),
   >           ('', 'parts', False, 'include some arbitrary parts to the bundle'),
   >           ('', 'reply', False, 'produce a reply bundle'),
   >           ('', 'pushrace', False, 'includes a check:head part with unknown nodes'),
   >           ('', 'genraise', False, 'includes a part that raise an exception during generation'),
   >           ('', 'timeout', False, 'emulate a timeout during bundle generation'),
   >           ('r', 'rev', [], 'includes those changeset in the bundle'),
   >           ('', 'compress', '', 'compress the stream'),],
   >          '[OUTPUTFILE]')
   > def cmdbundle2(ui, repo, path=None, **opts):
   >     """write a bundle2 container on standard output"""
   >     bundler = bundle2.bundle20(ui)
   >     for p in opts['param']:
   >         p = p.split('=', 1)
   >         try:
   >             bundler.addparam(*p)
   >         except ValueError as exc:
   >             raise error.Abort('%s' % exc)
   > 
   >     if opts['compress']:
   >         bundler.setcompression(opts['compress'])
   > 
   >     if opts['reply']:
   >         capsstring = 'ping-pong\nelephants=babar,celeste\ncity%3D%21=celeste%2Cville'
   >         bundler.newpart('replycaps', data=capsstring)
   > 
   >     if opts['pushrace']:
   >         # also serve to test the assignement of data outside of init
   >         part = bundler.newpart('check:heads')
   >         part.data = '01234567890123456789'
   > 
   >     revs = opts['rev']
   >     if 'rev' in opts:
   >         revs = scmutil.revrange(repo, opts['rev'])
   >         if revs:
   >             # very crude version of a changegroup part creation
   >             bundled = repo.revs('%ld::%ld', revs, revs)
   >             headmissing = [c.node() for c in repo.set('heads(%ld)', revs)]
   >             headcommon  = [c.node() for c in repo.set('parents(%ld) - %ld', revs, revs)]
   >             outgoing = discovery.outgoing(repo, headcommon, headmissing)
-  >             cg = changegroup.getchangegroup(repo, 'test:bundle2', outgoing, None)
+  >             cg = changegroup.makechangegroup(repo, outgoing, '01',
+  >                                              'test:bundle2')
   >             bundler.newpart('changegroup', data=cg.getchunks(),
   >                             mandatory=False)
   > 
   >     if opts['parts']:
   >        bundler.newpart('test:empty', mandatory=False)
   >        # add a second one to make sure we handle multiple parts
   >        bundler.newpart('test:empty', mandatory=False)
   >        bundler.newpart('test:song', data=ELEPHANTSSONG, mandatory=False)
   >        bundler.newpart('test:debugreply', mandatory=False)
   >        mathpart = bundler.newpart('test:math')
   >        mathpart.addparam('pi', '3.14')
   >        mathpart.addparam('e', '2.72')
   >        mathpart.addparam('cooking', 'raw', mandatory=False)
   >        mathpart.data = '42'
   >        mathpart.mandatory = False
   >        # advisory known part with unknown mandatory param
   >        bundler.newpart('test:song', [('randomparam','')], mandatory=False)
   >     if opts['unknown']:
   >        bundler.newpart('test:unknown', data='some random content')
   >     if opts['unknownparams']:
   >        bundler.newpart('test:song', [('randomparams', '')])
   >     if opts['parts']:
   >        bundler.newpart('test:ping', mandatory=False)
   >     if opts['genraise']:
   >        def genraise():
   >            yield 'first line\n'
   >            raise RuntimeError('Someone set up us the bomb!')
   >        bundler.newpart('output', data=genraise(), mandatory=False)
   > 
   >     if path is None:
   >        file = sys.stdout
   >     else:
   >         file = open(path, 'wb')
   > 
   >     if opts['timeout']:
   >         bundler.newpart('test:song', data=ELEPHANTSSONG, mandatory=False)
   >         for idx, junk in enumerate(bundler.getchunks()):
   >             ui.write('%d chunk\n' % idx)
   >             if idx > 4:
   >                 # This throws a GeneratorExit inside the generator, which
   >                 # can cause problems if the exception-recovery code is
   >                 # too zealous. It's important for this test that the break
   >                 # occur while we're in the middle of a part.
   >                 break
   >         gc.collect()
   >         ui.write('fake timeout complete.\n')
   >         return
   >     try:
   >         for chunk in bundler.getchunks():
   >             file.write(chunk)
   >     except RuntimeError as exc:
   >         raise error.Abort(exc)
   >     finally:
   >         file.flush()
   > 
   > @command(b'unbundle2', [], '')
   > def cmdunbundle2(ui, repo, replypath=None):
   >     """process a bundle2 stream from stdin on the current repo"""
   >     try:
   >         tr = None
   >         lock = repo.lock()
   >         tr = repo.transaction('processbundle')
   >         try:
   >             unbundler = bundle2.getunbundler(ui, sys.stdin)
   >             op = bundle2.processbundle(repo, unbundler, lambda: tr)
   >             tr.close()
   >         except error.BundleValueError as exc:
   >             raise error.Abort('missing support for %s' % exc)
   >         except error.PushRaced as exc:
   >             raise error.Abort('push race: %s' % exc)
   >     finally:
   >         if tr is not None:
   >             tr.release()
   >         lock.release()
   >         remains = sys.stdin.read()
   >         ui.write('%i unread bytes\n' % len(remains))
   >     if op.records['song']:
   >         totalverses = sum(r['verses'] for r in op.records['song'])
   >         ui.write('%i total verses sung\n' % totalverses)
   >     for rec in op.records['changegroup']:
   >         ui.write('addchangegroup return: %i\n' % rec['return'])
   >     if op.reply is not None and replypath is not None:
   >         with open(replypath, 'wb') as file:
   >             for chunk in op.reply.getchunks():
   >                 file.write(chunk)
   > 
   > @command(b'statbundle2', [], '')
   > def cmdstatbundle2(ui, repo):
   >     """print statistic on the bundle2 container read from stdin"""
   >     unbundler = bundle2.getunbundler(ui, sys.stdin)
   >     try:
   >         params = unbundler.params
   >     except error.BundleValueError as exc:
   >        raise error.Abort('unknown parameters: %s' % exc)
   >     ui.write('options count: %i\n' % len(params))
   >     for key in sorted(params):
   >         ui.write('- %s\n' % key)
   >         value = params[key]
   >         if value is not None:
   >             ui.write('    %s\n' % value)
   >     count = 0
   >     for p in unbundler.iterparts():
   >         count += 1
   >         ui.write('  :%s:\n' % p.type)
   >         ui.write('    mandatory: %i\n' % len(p.mandatoryparams))
   >         ui.write('    advisory: %i\n' % len(p.advisoryparams))
   >         ui.write('    payload: %i bytes\n' % len(p.read()))
   >     ui.write('parts count:   %i\n' % count)
   > EOF
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > bundle2=$TESTTMP/bundle2.py
   > [experimental]
   > stabilization=createmarkers
   > [ui]
   > ssh=$PYTHON "$TESTDIR/dummyssh"
   > logtemplate={rev}:{node|short} {phase} {author} {bookmarks} {desc|firstline}
   > [web]
   > push_ssl = false
   > allow_push = *
   > [phases]
   > publish=False
   > EOF
 
 The extension requires a repo (currently unused)
 
   $ hg init main
   $ cd main
   $ touch a
   $ hg add a
   $ hg commit -m 'a'
 
 
 Empty bundle
 =================
 
 - no option
 - no parts
 
 Test bundling
 
   $ hg bundle2 | f --hexdump
   
   0000: 48 47 32 30 00 00 00 00 00 00 00 00             |HG20........|
 
 Test timeouts during bundling
   $ hg bundle2 --timeout --debug --config devel.bundle2.debug=yes
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output: start emission of HG20 stream
   0 chunk
   bundle2-output: bundle parameter: 
   1 chunk
   bundle2-output: start of parts
   bundle2-output: bundle part: "test:song"
   bundle2-output-part: "test:song" (advisory) 178 bytes payload
   bundle2-output: part 0: "test:song"
   bundle2-output: header chunk size: 16
   2 chunk
   3 chunk
   bundle2-output: payload chunk size: 178
   4 chunk
   5 chunk
   bundle2-generatorexit
   fake timeout complete.
 
 Test unbundling
 
   $ hg bundle2 | hg statbundle2
   options count: 0
   parts count:   0
 
 Test old style bundle are detected and refused
 
   $ hg bundle --all --type v1 ../bundle.hg
   1 changesets found
   $ hg statbundle2 < ../bundle.hg
   abort: unknown bundle version 10
   [255]
 
 Test parameters
 =================
 
 - some options
 - no parts
 
 advisory parameters, no value
 -------------------------------
 
 Simplest possible parameters form
 
 Test generation simple option
 
   $ hg bundle2 --param 'caution' | f --hexdump
   
   0000: 48 47 32 30 00 00 00 07 63 61 75 74 69 6f 6e 00 |HG20....caution.|
   0010: 00 00 00                                        |...|
 
 Test unbundling
 
   $ hg bundle2 --param 'caution' | hg statbundle2
   options count: 1
   - caution
   parts count:   0
 
 Test generation multiple option
 
   $ hg bundle2 --param 'caution' --param 'meal' | f --hexdump
   
   0000: 48 47 32 30 00 00 00 0c 63 61 75 74 69 6f 6e 20 |HG20....caution |
   0010: 6d 65 61 6c 00 00 00 00                         |meal....|
 
 Test unbundling
 
   $ hg bundle2 --param 'caution' --param 'meal' | hg statbundle2
   options count: 2
   - caution
   - meal
   parts count:   0
 
 advisory parameters, with value
 -------------------------------
 
 Test generation
 
   $ hg bundle2 --param 'caution' --param 'meal=vegan' --param 'elephants' | f --hexdump
   
   0000: 48 47 32 30 00 00 00 1c 63 61 75 74 69 6f 6e 20 |HG20....caution |
   0010: 6d 65 61 6c 3d 76 65 67 61 6e 20 65 6c 65 70 68 |meal=vegan eleph|
   0020: 61 6e 74 73 00 00 00 00                         |ants....|
 
 Test unbundling
 
   $ hg bundle2 --param 'caution' --param 'meal=vegan' --param 'elephants' | hg statbundle2
   options count: 3
   - caution
   - elephants
   - meal
       vegan
   parts count:   0
 
 parameter with special char in value
 ---------------------------------------------------
 
 Test generation
 
   $ hg bundle2 --param 'e|! 7/=babar%#==tutu' --param simple | f --hexdump
   
   0000: 48 47 32 30 00 00 00 29 65 25 37 43 25 32 31 25 |HG20...)e%7C%21%|
   0010: 32 30 37 2f 3d 62 61 62 61 72 25 32 35 25 32 33 |207/=babar%25%23|
   0020: 25 33 44 25 33 44 74 75 74 75 20 73 69 6d 70 6c |%3D%3Dtutu simpl|
   0030: 65 00 00 00 00                                  |e....|
 
 Test unbundling
 
   $ hg bundle2 --param 'e|! 7/=babar%#==tutu' --param simple | hg statbundle2
   options count: 2
   - e|! 7/
       babar%#==tutu
   - simple
   parts count:   0
 
 Test unknown mandatory option
 ---------------------------------------------------
 
   $ hg bundle2 --param 'Gravity' | hg statbundle2
   abort: unknown parameters: Stream Parameter - Gravity
   [255]
 
 Test debug output
 ---------------------------------------------------
 
 bundling debug
 
   $ hg bundle2 --debug --param 'e|! 7/=babar%#==tutu' --param simple ../out.hg2 --config progress.debug=true --config devel.bundle2.debug=true
   bundle2-output-bundle: "HG20", (2 params) 0 parts total
   bundle2-output: start emission of HG20 stream
   bundle2-output: bundle parameter: e%7C%21%207/=babar%25%23%3D%3Dtutu simple
   bundle2-output: start of parts
   bundle2-output: end of bundle
 
 file content is ok
 
   $ f --hexdump ../out.hg2
   ../out.hg2:
   0000: 48 47 32 30 00 00 00 29 65 25 37 43 25 32 31 25 |HG20...)e%7C%21%|
   0010: 32 30 37 2f 3d 62 61 62 61 72 25 32 35 25 32 33 |207/=babar%25%23|
   0020: 25 33 44 25 33 44 74 75 74 75 20 73 69 6d 70 6c |%3D%3Dtutu simpl|
   0030: 65 00 00 00 00                                  |e....|
 
 unbundling debug
 
   $ hg statbundle2 --debug --config progress.debug=true --config devel.bundle2.debug=true < ../out.hg2
   bundle2-input: start processing of HG20 stream
   bundle2-input: reading bundle2 stream parameters
   bundle2-input: ignoring unknown parameter 'e|! 7/'
   bundle2-input: ignoring unknown parameter 'simple'
   options count: 2
   - e|! 7/
       babar%#==tutu
   - simple
   bundle2-input: start extraction of bundle2 parts
   bundle2-input: part header size: 0
   bundle2-input: end of bundle2 stream
   parts count:   0
 
 
 Test buggy input
 ---------------------------------------------------
 
 empty parameter name
 
   $ hg bundle2 --param '' --quiet
   abort: empty parameter name
   [255]
 
 bad parameter name
 
   $ hg bundle2 --param 42babar
   abort: non letter first character: '42babar'
   [255]
 
 
 Test part
 =================
 
   $ hg bundle2 --parts ../parts.hg2 --debug --config progress.debug=true --config devel.bundle2.debug=true
   bundle2-output-bundle: "HG20", 7 parts total
   bundle2-output: start emission of HG20 stream
   bundle2-output: bundle parameter: 
   bundle2-output: start of parts
   bundle2-output: bundle part: "test:empty"
   bundle2-output-part: "test:empty" (advisory) empty payload
   bundle2-output: part 0: "test:empty"
   bundle2-output: header chunk size: 17
   bundle2-output: closing payload chunk
   bundle2-output: bundle part: "test:empty"
   bundle2-output-part: "test:empty" (advisory) empty payload
   bundle2-output: part 1: "test:empty"
   bundle2-output: header chunk size: 17
   bundle2-output: closing payload chunk
   bundle2-output: bundle part: "test:song"
   bundle2-output-part: "test:song" (advisory) 178 bytes payload
   bundle2-output: part 2: "test:song"
   bundle2-output: header chunk size: 16
   bundle2-output: payload chunk size: 178
   bundle2-output: closing payload chunk
   bundle2-output: bundle part: "test:debugreply"
   bundle2-output-part: "test:debugreply" (advisory) empty payload
   bundle2-output: part 3: "test:debugreply"
   bundle2-output: header chunk size: 22
   bundle2-output: closing payload chunk
   bundle2-output: bundle part: "test:math"
   bundle2-output-part: "test:math" (advisory) (params: 2 mandatory 2 advisory) 2 bytes payload
   bundle2-output: part 4: "test:math"
   bundle2-output: header chunk size: 43
   bundle2-output: payload chunk size: 2
   bundle2-output: closing payload chunk
   bundle2-output: bundle part: "test:song"
   bundle2-output-part: "test:song" (advisory) (params: 1 mandatory) empty payload
   bundle2-output: part 5: "test:song"
   bundle2-output: header chunk size: 29
   bundle2-output: closing payload chunk
   bundle2-output: bundle part: "test:ping"
   bundle2-output-part: "test:ping" (advisory) empty payload
   bundle2-output: part 6: "test:ping"
   bundle2-output: header chunk size: 16
   bundle2-output: closing payload chunk
   bundle2-output: end of bundle
 
   $ f --hexdump ../parts.hg2
   ../parts.hg2:
   0000: 48 47 32 30 00 00 00 00 00 00 00 11 0a 74 65 73 |HG20.........tes|
   0010: 74 3a 65 6d 70 74 79 00 00 00 00 00 00 00 00 00 |t:empty.........|
   0020: 00 00 00 00 11 0a 74 65 73 74 3a 65 6d 70 74 79 |......test:empty|
   0030: 00 00 00 01 00 00 00 00 00 00 00 00 00 10 09 74 |...............t|
   0040: 65 73 74 3a 73 6f 6e 67 00 00 00 02 00 00 00 00 |est:song........|
   0050: 00 b2 50 61 74 61 6c 69 20 44 69 72 61 70 61 74 |..Patali Dirapat|
   0060: 61 2c 20 43 72 6f 6d 64 61 20 43 72 6f 6d 64 61 |a, Cromda Cromda|
   0070: 20 52 69 70 61 6c 6f 2c 20 50 61 74 61 20 50 61 | Ripalo, Pata Pa|
   0080: 74 61 2c 20 4b 6f 20 4b 6f 20 4b 6f 0a 42 6f 6b |ta, Ko Ko Ko.Bok|
   0090: 6f 72 6f 20 44 69 70 6f 75 6c 69 74 6f 2c 20 52 |oro Dipoulito, R|
   00a0: 6f 6e 64 69 20 52 6f 6e 64 69 20 50 65 70 69 6e |ondi Rondi Pepin|
   00b0: 6f 2c 20 50 61 74 61 20 50 61 74 61 2c 20 4b 6f |o, Pata Pata, Ko|
   00c0: 20 4b 6f 20 4b 6f 0a 45 6d 61 6e 61 20 4b 61 72 | Ko Ko.Emana Kar|
   00d0: 61 73 73 6f 6c 69 2c 20 4c 6f 75 63 72 61 20 4c |assoli, Loucra L|
   00e0: 6f 75 63 72 61 20 50 6f 6e 70 6f 6e 74 6f 2c 20 |oucra Ponponto, |
   00f0: 50 61 74 61 20 50 61 74 61 2c 20 4b 6f 20 4b 6f |Pata Pata, Ko Ko|
   0100: 20 4b 6f 2e 00 00 00 00 00 00 00 16 0f 74 65 73 | Ko..........tes|
   0110: 74 3a 64 65 62 75 67 72 65 70 6c 79 00 00 00 03 |t:debugreply....|
   0120: 00 00 00 00 00 00 00 00 00 2b 09 74 65 73 74 3a |.........+.test:|
   0130: 6d 61 74 68 00 00 00 04 02 01 02 04 01 04 07 03 |math............|
   0140: 70 69 33 2e 31 34 65 32 2e 37 32 63 6f 6f 6b 69 |pi3.14e2.72cooki|
   0150: 6e 67 72 61 77 00 00 00 02 34 32 00 00 00 00 00 |ngraw....42.....|
   0160: 00 00 1d 09 74 65 73 74 3a 73 6f 6e 67 00 00 00 |....test:song...|
   0170: 05 01 00 0b 00 72 61 6e 64 6f 6d 70 61 72 61 6d |.....randomparam|
   0180: 00 00 00 00 00 00 00 10 09 74 65 73 74 3a 70 69 |.........test:pi|
   0190: 6e 67 00 00 00 06 00 00 00 00 00 00 00 00 00 00 |ng..............|
 
 
   $ hg statbundle2 < ../parts.hg2
   options count: 0
     :test:empty:
       mandatory: 0
       advisory: 0
       payload: 0 bytes
     :test:empty:
       mandatory: 0
       advisory: 0
       payload: 0 bytes
     :test:song:
       mandatory: 0
       advisory: 0
       payload: 178 bytes
     :test:debugreply:
       mandatory: 0
       advisory: 0
       payload: 0 bytes
     :test:math:
       mandatory: 2
       advisory: 1
       payload: 2 bytes
     :test:song:
       mandatory: 1
       advisory: 0
       payload: 0 bytes
     :test:ping:
       mandatory: 0
       advisory: 0
       payload: 0 bytes
   parts count:   7
 
   $ hg statbundle2 --debug --config progress.debug=true --config devel.bundle2.debug=true < ../parts.hg2
   bundle2-input: start processing of HG20 stream
   bundle2-input: reading bundle2 stream parameters
   options count: 0
   bundle2-input: start extraction of bundle2 parts
   bundle2-input: part header size: 17
   bundle2-input: part type: "test:empty"
   bundle2-input: part id: "0"
   bundle2-input: part parameters: 0
     :test:empty:
       mandatory: 0
       advisory: 0
   bundle2-input: payload chunk size: 0
       payload: 0 bytes
   bundle2-input: part header size: 17
   bundle2-input: part type: "test:empty"
   bundle2-input: part id: "1"
   bundle2-input: part parameters: 0
     :test:empty:
       mandatory: 0
       advisory: 0
   bundle2-input: payload chunk size: 0
       payload: 0 bytes
   bundle2-input: part header size: 16
   bundle2-input: part type: "test:song"
   bundle2-input: part id: "2"
   bundle2-input: part parameters: 0
     :test:song:
       mandatory: 0
       advisory: 0
   bundle2-input: payload chunk size: 178
   bundle2-input: payload chunk size: 0
   bundle2-input-part: total payload size 178
       payload: 178 bytes
   bundle2-input: part header size: 22
   bundle2-input: part type: "test:debugreply"
   bundle2-input: part id: "3"
   bundle2-input: part parameters: 0
     :test:debugreply:
       mandatory: 0
       advisory: 0
   bundle2-input: payload chunk size: 0
       payload: 0 bytes
   bundle2-input: part header size: 43
   bundle2-input: part type: "test:math"
   bundle2-input: part id: "4"
   bundle2-input: part parameters: 3
     :test:math:
       mandatory: 2
       advisory: 1
   bundle2-input: payload chunk size: 2
   bundle2-input: payload chunk size: 0
   bundle2-input-part: total payload size 2
       payload: 2 bytes
   bundle2-input: part header size: 29
   bundle2-input: part type: "test:song"
   bundle2-input: part id: "5"
   bundle2-input: part parameters: 1
     :test:song:
       mandatory: 1
       advisory: 0
   bundle2-input: payload chunk size: 0
       payload: 0 bytes
   bundle2-input: part header size: 16
   bundle2-input: part type: "test:ping"
   bundle2-input: part id: "6"
   bundle2-input: part parameters: 0
     :test:ping:
       mandatory: 0
       advisory: 0
   bundle2-input: payload chunk size: 0
       payload: 0 bytes
   bundle2-input: part header size: 0
   bundle2-input: end of bundle2 stream
   parts count:   7
 
 Test actual unbundling of test part
 =======================================
 
 Process the bundle
 
   $ hg unbundle2 --debug --config progress.debug=true --config devel.bundle2.debug=true < ../parts.hg2
   bundle2-input: start processing of HG20 stream
   bundle2-input: reading bundle2 stream parameters
   bundle2-input-bundle: with-transaction
   bundle2-input: start extraction of bundle2 parts
   bundle2-input: part header size: 17
   bundle2-input: part type: "test:empty"
   bundle2-input: part id: "0"
   bundle2-input: part parameters: 0
   bundle2-input: ignoring unsupported advisory part test:empty
   bundle2-input-part: "test:empty" (advisory) unsupported-type
   bundle2-input: payload chunk size: 0
   bundle2-input: part header size: 17
   bundle2-input: part type: "test:empty"
   bundle2-input: part id: "1"
   bundle2-input: part parameters: 0
   bundle2-input: ignoring unsupported advisory part test:empty
   bundle2-input-part: "test:empty" (advisory) unsupported-type
   bundle2-input: payload chunk size: 0
   bundle2-input: part header size: 16
   bundle2-input: part type: "test:song"
   bundle2-input: part id: "2"
   bundle2-input: part parameters: 0
   bundle2-input: found a handler for part 'test:song'
   bundle2-input-part: "test:song" (advisory) supported
   The choir starts singing:
   bundle2-input: payload chunk size: 178
   bundle2-input: payload chunk size: 0
   bundle2-input-part: total payload size 178
       Patali Dirapata, Cromda Cromda Ripalo, Pata Pata, Ko Ko Ko
       Bokoro Dipoulito, Rondi Rondi Pepino, Pata Pata, Ko Ko Ko
       Emana Karassoli, Loucra Loucra Ponponto, Pata Pata, Ko Ko Ko.
   bundle2-input: part header size: 22
   bundle2-input: part type: "test:debugreply"
   bundle2-input: part id: "3"
   bundle2-input: part parameters: 0
   bundle2-input: found a handler for part 'test:debugreply'
   bundle2-input-part: "test:debugreply" (advisory) supported
   debugreply: no reply
   bundle2-input: payload chunk size: 0
   bundle2-input: part header size: 43
   bundle2-input: part type: "test:math"
   bundle2-input: part id: "4"
   bundle2-input: part parameters: 3
   bundle2-input: ignoring unsupported advisory part test:math
   bundle2-input-part: "test:math" (advisory) (params: 2 mandatory 2 advisory) unsupported-type
   bundle2-input: payload chunk size: 2
   bundle2-input: payload chunk size: 0
   bundle2-input-part: total payload size 2
   bundle2-input: part header size: 29
   bundle2-input: part type: "test:song"
   bundle2-input: part id: "5"
   bundle2-input: part parameters: 1
   bundle2-input: found a handler for part 'test:song'
   bundle2-input: ignoring unsupported advisory part test:song - randomparam
   bundle2-input-part: "test:song" (advisory) (params: 1 mandatory) unsupported-params (['randomparam'])
   bundle2-input: payload chunk size: 0
   bundle2-input: part header size: 16
   bundle2-input: part type: "test:ping"
   bundle2-input: part id: "6"
   bundle2-input: part parameters: 0
   bundle2-input: found a handler for part 'test:ping'
   bundle2-input-part: "test:ping" (advisory) supported
   received ping request (id 6)
   bundle2-input: payload chunk size: 0
   bundle2-input: part header size: 0
   bundle2-input: end of bundle2 stream
   bundle2-input-bundle: 6 parts total
   0 unread bytes
   3 total verses sung
 
 Unbundle with an unknown mandatory part
 (should abort)
 
   $ hg bundle2 --parts --unknown ../unknown.hg2
 
   $ hg unbundle2 < ../unknown.hg2
   The choir starts singing:
       Patali Dirapata, Cromda Cromda Ripalo, Pata Pata, Ko Ko Ko
       Bokoro Dipoulito, Rondi Rondi Pepino, Pata Pata, Ko Ko Ko
       Emana Karassoli, Loucra Loucra Ponponto, Pata Pata, Ko Ko Ko.
   debugreply: no reply
   0 unread bytes
   abort: missing support for test:unknown
   [255]
 
 Unbundle with an unknown mandatory part parameters
 (should abort)
 
   $ hg bundle2 --unknownparams ../unknown.hg2
 
   $ hg unbundle2 < ../unknown.hg2
   0 unread bytes
   abort: missing support for test:song - randomparams
   [255]
 
 unbundle with a reply
 
   $ hg bundle2 --parts --reply ../parts-reply.hg2
   $ hg unbundle2 ../reply.hg2 < ../parts-reply.hg2
   0 unread bytes
   3 total verses sung
 
 The reply is a bundle
 
   $ f --hexdump ../reply.hg2
   ../reply.hg2:
   0000: 48 47 32 30 00 00 00 00 00 00 00 1b 06 6f 75 74 |HG20.........out|
   0010: 70 75 74 00 00 00 00 00 01 0b 01 69 6e 2d 72 65 |put........in-re|
   0020: 70 6c 79 2d 74 6f 33 00 00 00 d9 54 68 65 20 63 |ply-to3....The c|
   0030: 68 6f 69 72 20 73 74 61 72 74 73 20 73 69 6e 67 |hoir starts sing|
   0040: 69 6e 67 3a 0a 20 20 20 20 50 61 74 61 6c 69 20 |ing:.    Patali |
   0050: 44 69 72 61 70 61 74 61 2c 20 43 72 6f 6d 64 61 |Dirapata, Cromda|
   0060: 20 43 72 6f 6d 64 61 20 52 69 70 61 6c 6f 2c 20 | Cromda Ripalo, |
   0070: 50 61 74 61 20 50 61 74 61 2c 20 4b 6f 20 4b 6f |Pata Pata, Ko Ko|
   0080: 20 4b 6f 0a 20 20 20 20 42 6f 6b 6f 72 6f 20 44 | Ko.    Bokoro D|
   0090: 69 70 6f 75 6c 69 74 6f 2c 20 52 6f 6e 64 69 20 |ipoulito, Rondi |
   00a0: 52 6f 6e 64 69 20 50 65 70 69 6e 6f 2c 20 50 61 |Rondi Pepino, Pa|
   00b0: 74 61 20 50 61 74 61 2c 20 4b 6f 20 4b 6f 20 4b |ta Pata, Ko Ko K|
   00c0: 6f 0a 20 20 20 20 45 6d 61 6e 61 20 4b 61 72 61 |o.    Emana Kara|
   00d0: 73 73 6f 6c 69 2c 20 4c 6f 75 63 72 61 20 4c 6f |ssoli, Loucra Lo|
   00e0: 75 63 72 61 20 50 6f 6e 70 6f 6e 74 6f 2c 20 50 |ucra Ponponto, P|
   00f0: 61 74 61 20 50 61 74 61 2c 20 4b 6f 20 4b 6f 20 |ata Pata, Ko Ko |
   0100: 4b 6f 2e 0a 00 00 00 00 00 00 00 1b 06 6f 75 74 |Ko...........out|
   0110: 70 75 74 00 00 00 01 00 01 0b 01 69 6e 2d 72 65 |put........in-re|
   0120: 70 6c 79 2d 74 6f 34 00 00 00 c9 64 65 62 75 67 |ply-to4....debug|
   0130: 72 65 70 6c 79 3a 20 63 61 70 61 62 69 6c 69 74 |reply: capabilit|
   0140: 69 65 73 3a 0a 64 65 62 75 67 72 65 70 6c 79 3a |ies:.debugreply:|
   0150: 20 20 20 20 20 27 63 69 74 79 3d 21 27 0a 64 65 |     'city=!'.de|
   0160: 62 75 67 72 65 70 6c 79 3a 20 20 20 20 20 20 20 |bugreply:       |
   0170: 20 20 27 63 65 6c 65 73 74 65 2c 76 69 6c 6c 65 |  'celeste,ville|
   0180: 27 0a 64 65 62 75 67 72 65 70 6c 79 3a 20 20 20 |'.debugreply:   |
   0190: 20 20 27 65 6c 65 70 68 61 6e 74 73 27 0a 64 65 |  'elephants'.de|
   01a0: 62 75 67 72 65 70 6c 79 3a 20 20 20 20 20 20 20 |bugreply:       |
   01b0: 20 20 27 62 61 62 61 72 27 0a 64 65 62 75 67 72 |  'babar'.debugr|
   01c0: 65 70 6c 79 3a 20 20 20 20 20 20 20 20 20 27 63 |eply:         'c|
   01d0: 65 6c 65 73 74 65 27 0a 64 65 62 75 67 72 65 70 |eleste'.debugrep|
   01e0: 6c 79 3a 20 20 20 20 20 27 70 69 6e 67 2d 70 6f |ly:     'ping-po|
   01f0: 6e 67 27 0a 00 00 00 00 00 00 00 1e 09 74 65 73 |ng'..........tes|
   0200: 74 3a 70 6f 6e 67 00 00 00 02 01 00 0b 01 69 6e |t:pong........in|
   0210: 2d 72 65 70 6c 79 2d 74 6f 37 00 00 00 00 00 00 |-reply-to7......|
   0220: 00 1b 06 6f 75 74 70 75 74 00 00 00 03 00 01 0b |...output.......|
   0230: 01 69 6e 2d 72 65 70 6c 79 2d 74 6f 37 00 00 00 |.in-reply-to7...|
   0240: 3d 72 65 63 65 69 76 65 64 20 70 69 6e 67 20 72 |=received ping r|
   0250: 65 71 75 65 73 74 20 28 69 64 20 37 29 0a 72 65 |equest (id 7).re|
   0260: 70 6c 79 69 6e 67 20 74 6f 20 70 69 6e 67 20 72 |plying to ping r|
   0270: 65 71 75 65 73 74 20 28 69 64 20 37 29 0a 00 00 |equest (id 7)...|
   0280: 00 00 00 00 00 00                               |......|
 
 The reply is valid
 
   $ hg statbundle2 < ../reply.hg2
   options count: 0
     :output:
       mandatory: 0
       advisory: 1
       payload: 217 bytes
     :output:
       mandatory: 0
       advisory: 1
       payload: 201 bytes
     :test:pong:
       mandatory: 1
       advisory: 0
       payload: 0 bytes
     :output:
       mandatory: 0
       advisory: 1
       payload: 61 bytes
   parts count:   4
 
 Unbundle the reply to get the output:
 
   $ hg unbundle2 < ../reply.hg2
   remote: The choir starts singing:
   remote:     Patali Dirapata, Cromda Cromda Ripalo, Pata Pata, Ko Ko Ko
   remote:     Bokoro Dipoulito, Rondi Rondi Pepino, Pata Pata, Ko Ko Ko
   remote:     Emana Karassoli, Loucra Loucra Ponponto, Pata Pata, Ko Ko Ko.
   remote: debugreply: capabilities:
   remote: debugreply:     'city=!'
   remote: debugreply:         'celeste,ville'
   remote: debugreply:     'elephants'
   remote: debugreply:         'babar'
   remote: debugreply:         'celeste'
   remote: debugreply:     'ping-pong'
   remote: received ping request (id 7)
   remote: replying to ping request (id 7)
   0 unread bytes
 
 Test push race detection
 
   $ hg bundle2 --pushrace ../part-race.hg2
 
   $ hg unbundle2 < ../part-race.hg2
   0 unread bytes
   abort: push race: repository changed while pushing - please try again
   [255]
 
 Support for changegroup
 ===================================
 
   $ hg unbundle $TESTDIR/bundles/rebase.hg
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+3 heads)
   (run 'hg heads' to see heads, 'hg merge' to merge)
 
   $ hg log -G
   o  8:02de42196ebe draft Nicolas Dumazet <[e-mail]>  H
   |
   | o  7:eea13746799a draft Nicolas Dumazet <[e-mail]>  G
   |/|
   o |  6:24b6387c8c8c draft Nicolas Dumazet <[e-mail]>  F
   | |
   | o  5:9520eea781bc draft Nicolas Dumazet <[e-mail]>  E
   |/
   | o  4:32af7686d403 draft Nicolas Dumazet <[e-mail]>  D
   | |
   | o  3:5fddd98957c8 draft Nicolas Dumazet <[e-mail]>  C
   | |
   | o  2:42ccdea3bb16 draft Nicolas Dumazet <[e-mail]>  B
   |/
   o  1:cd010b8cd998 draft Nicolas Dumazet <[e-mail]>  A
   
   @  0:3903775176ed draft test  a
   
 
   $ hg bundle2 --debug --config progress.debug=true --config devel.bundle2.debug=true --rev '8+7+5+4' ../rev.hg2
   4 changesets found
   list of changesets:
   32af7686d403cf45b5d95f2d70cebea587ac806a
   9520eea781bcca16c1e15acc0ba14335a0e8e5ba
   eea13746799a9e0bfd88f29d3c2e9dc9389f524f
   02de42196ebee42ef284b6780a87cdc96e8eaab6
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output: start emission of HG20 stream
   bundle2-output: bundle parameter: 
   bundle2-output: start of parts
   bundle2-output: bundle part: "changegroup"
   bundle2-output-part: "changegroup" (advisory) streamed payload
   bundle2-output: part 0: "changegroup"
   bundle2-output: header chunk size: 18
   bundling: 1/4 changesets (25.00%)
   bundling: 2/4 changesets (50.00%)
   bundling: 3/4 changesets (75.00%)
   bundling: 4/4 changesets (100.00%)
   bundling: 1/4 manifests (25.00%)
   bundling: 2/4 manifests (50.00%)
   bundling: 3/4 manifests (75.00%)
   bundling: 4/4 manifests (100.00%)
   bundling: D 1/3 files (33.33%)
   bundling: E 2/3 files (66.67%)
   bundling: H 3/3 files (100.00%)
   bundle2-output: payload chunk size: 1555
   bundle2-output: closing payload chunk
   bundle2-output: end of bundle
 
   $ f --hexdump ../rev.hg2
   ../rev.hg2:
   0000: 48 47 32 30 00 00 00 00 00 00 00 12 0b 63 68 61 |HG20.........cha|
   0010: 6e 67 65 67 72 6f 75 70 00 00 00 00 00 00 00 00 |ngegroup........|
   0020: 06 13 00 00 00 a4 32 af 76 86 d4 03 cf 45 b5 d9 |......2.v....E..|
   0030: 5f 2d 70 ce be a5 87 ac 80 6a 5f dd d9 89 57 c8 |_-p......j_...W.|
   0040: a5 4a 4d 43 6d fe 1d a9 d8 7f 21 a1 b9 7b 00 00 |.JMCm.....!..{..|
   0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   0060: 00 00 32 af 76 86 d4 03 cf 45 b5 d9 5f 2d 70 ce |..2.v....E.._-p.|
   0070: be a5 87 ac 80 6a 00 00 00 00 00 00 00 29 00 00 |.....j.......)..|
   0080: 00 29 36 65 31 66 34 63 34 37 65 63 62 35 33 33 |.)6e1f4c47ecb533|
   0090: 66 66 64 30 63 38 65 35 32 63 64 63 38 38 61 66 |ffd0c8e52cdc88af|
   00a0: 62 36 63 64 33 39 65 32 30 63 0a 00 00 00 66 00 |b6cd39e20c....f.|
   00b0: 00 00 68 00 00 00 02 44 0a 00 00 00 69 00 00 00 |..h....D....i...|
   00c0: 6a 00 00 00 01 44 00 00 00 a4 95 20 ee a7 81 bc |j....D..... ....|
   00d0: ca 16 c1 e1 5a cc 0b a1 43 35 a0 e8 e5 ba cd 01 |....Z...C5......|
   00e0: 0b 8c d9 98 f3 98 1a 5a 81 15 f9 4f 8d a4 ab 50 |.......Z...O...P|
   00f0: 60 89 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |`...............|
   0100: 00 00 00 00 00 00 95 20 ee a7 81 bc ca 16 c1 e1 |....... ........|
   0110: 5a cc 0b a1 43 35 a0 e8 e5 ba 00 00 00 00 00 00 |Z...C5..........|
   0120: 00 29 00 00 00 29 34 64 65 63 65 39 63 38 32 36 |.)...)4dece9c826|
   0130: 66 36 39 34 39 30 35 30 37 62 39 38 63 36 33 38 |f69490507b98c638|
   0140: 33 61 33 30 30 39 62 32 39 35 38 33 37 64 0a 00 |3a3009b295837d..|
   0150: 00 00 66 00 00 00 68 00 00 00 02 45 0a 00 00 00 |..f...h....E....|
   0160: 69 00 00 00 6a 00 00 00 01 45 00 00 00 a2 ee a1 |i...j....E......|
   0170: 37 46 79 9a 9e 0b fd 88 f2 9d 3c 2e 9d c9 38 9f |7Fy.......<...8.|
   0180: 52 4f 24 b6 38 7c 8c 8c ae 37 17 88 80 f3 fa 95 |RO$.8|...7......|
   0190: de d3 cb 1c f7 85 95 20 ee a7 81 bc ca 16 c1 e1 |....... ........|
   01a0: 5a cc 0b a1 43 35 a0 e8 e5 ba ee a1 37 46 79 9a |Z...C5......7Fy.|
   01b0: 9e 0b fd 88 f2 9d 3c 2e 9d c9 38 9f 52 4f 00 00 |......<...8.RO..|
   01c0: 00 00 00 00 00 29 00 00 00 29 33 36 35 62 39 33 |.....)...)365b93|
   01d0: 64 35 37 66 64 66 34 38 31 34 65 32 62 35 39 31 |d57fdf4814e2b591|
   01e0: 31 64 36 62 61 63 66 66 32 62 31 32 30 31 34 34 |1d6bacff2b120144|
   01f0: 34 31 0a 00 00 00 66 00 00 00 68 00 00 00 00 00 |41....f...h.....|
   0200: 00 00 69 00 00 00 6a 00 00 00 01 47 00 00 00 a4 |..i...j....G....|
   0210: 02 de 42 19 6e be e4 2e f2 84 b6 78 0a 87 cd c9 |..B.n......x....|
   0220: 6e 8e aa b6 24 b6 38 7c 8c 8c ae 37 17 88 80 f3 |n...$.8|...7....|
   0230: fa 95 de d3 cb 1c f7 85 00 00 00 00 00 00 00 00 |................|
   0240: 00 00 00 00 00 00 00 00 00 00 00 00 02 de 42 19 |..............B.|
   0250: 6e be e4 2e f2 84 b6 78 0a 87 cd c9 6e 8e aa b6 |n......x....n...|
   0260: 00 00 00 00 00 00 00 29 00 00 00 29 38 62 65 65 |.......)...)8bee|
   0270: 34 38 65 64 63 37 33 31 38 35 34 31 66 63 30 30 |48edc7318541fc00|
   0280: 31 33 65 65 34 31 62 30 38 39 32 37 36 61 38 63 |13ee41b089276a8c|
   0290: 32 34 62 66 0a 00 00 00 66 00 00 00 66 00 00 00 |24bf....f...f...|
   02a0: 02 48 0a 00 00 00 67 00 00 00 68 00 00 00 01 48 |.H....g...h....H|
   02b0: 00 00 00 00 00 00 00 8b 6e 1f 4c 47 ec b5 33 ff |........n.LG..3.|
   02c0: d0 c8 e5 2c dc 88 af b6 cd 39 e2 0c 66 a5 a0 18 |...,.....9..f...|
   02d0: 17 fd f5 23 9c 27 38 02 b5 b7 61 8d 05 1c 89 e4 |...#.'8...a.....|
   02e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   02f0: 00 00 00 00 32 af 76 86 d4 03 cf 45 b5 d9 5f 2d |....2.v....E.._-|
   0300: 70 ce be a5 87 ac 80 6a 00 00 00 81 00 00 00 81 |p......j........|
   0310: 00 00 00 2b 44 00 63 33 66 31 63 61 32 39 32 34 |...+D.c3f1ca2924|
   0320: 63 31 36 61 31 39 62 30 36 35 36 61 38 34 39 30 |c16a19b0656a8490|
   0330: 30 65 35 30 34 65 35 62 30 61 65 63 32 64 0a 00 |0e504e5b0aec2d..|
   0340: 00 00 8b 4d ec e9 c8 26 f6 94 90 50 7b 98 c6 38 |...M...&...P{..8|
   0350: 3a 30 09 b2 95 83 7d 00 7d 8c 9d 88 84 13 25 f5 |:0....}.}.....%.|
   0360: c6 b0 63 71 b3 5b 4e 8a 2b 1a 83 00 00 00 00 00 |..cq.[N.+.......|
   0370: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 95 |................|
   0380: 20 ee a7 81 bc ca 16 c1 e1 5a cc 0b a1 43 35 a0 | ........Z...C5.|
   0390: e8 e5 ba 00 00 00 2b 00 00 00 ac 00 00 00 2b 45 |......+.......+E|
   03a0: 00 39 63 36 66 64 30 33 35 30 61 36 63 30 64 30 |.9c6fd0350a6c0d0|
   03b0: 63 34 39 64 34 61 39 63 35 30 31 37 63 66 30 37 |c49d4a9c5017cf07|
   03c0: 30 34 33 66 35 34 65 35 38 0a 00 00 00 8b 36 5b |043f54e58.....6[|
   03d0: 93 d5 7f df 48 14 e2 b5 91 1d 6b ac ff 2b 12 01 |....H.....k..+..|
   03e0: 44 41 28 a5 84 c6 5e f1 21 f8 9e b6 6a b7 d0 bc |DA(...^.!...j...|
   03f0: 15 3d 80 99 e7 ce 4d ec e9 c8 26 f6 94 90 50 7b |.=....M...&...P{|
   0400: 98 c6 38 3a 30 09 b2 95 83 7d ee a1 37 46 79 9a |..8:0....}..7Fy.|
   0410: 9e 0b fd 88 f2 9d 3c 2e 9d c9 38 9f 52 4f 00 00 |......<...8.RO..|
   0420: 00 56 00 00 00 56 00 00 00 2b 46 00 32 32 62 66 |.V...V...+F.22bf|
   0430: 63 66 64 36 32 61 32 31 61 33 32 38 37 65 64 62 |cfd62a21a3287edb|
   0440: 64 34 64 36 35 36 32 31 38 64 30 66 35 32 35 65 |d4d656218d0f525e|
   0450: 64 37 36 61 0a 00 00 00 97 8b ee 48 ed c7 31 85 |d76a.......H..1.|
   0460: 41 fc 00 13 ee 41 b0 89 27 6a 8c 24 bf 28 a5 84 |A....A..'j.$.(..|
   0470: c6 5e f1 21 f8 9e b6 6a b7 d0 bc 15 3d 80 99 e7 |.^.!...j....=...|
   0480: ce 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   0490: 00 00 00 00 00 02 de 42 19 6e be e4 2e f2 84 b6 |.......B.n......|
   04a0: 78 0a 87 cd c9 6e 8e aa b6 00 00 00 2b 00 00 00 |x....n......+...|
   04b0: 56 00 00 00 00 00 00 00 81 00 00 00 81 00 00 00 |V...............|
   04c0: 2b 48 00 38 35 30 30 31 38 39 65 37 34 61 39 65 |+H.8500189e74a9e|
   04d0: 30 34 37 35 65 38 32 32 30 39 33 62 63 37 64 62 |0475e822093bc7db|
   04e0: 30 64 36 33 31 61 65 62 30 62 34 0a 00 00 00 00 |0d631aeb0b4.....|
   04f0: 00 00 00 05 44 00 00 00 62 c3 f1 ca 29 24 c1 6a |....D...b...)$.j|
   0500: 19 b0 65 6a 84 90 0e 50 4e 5b 0a ec 2d 00 00 00 |..ej...PN[..-...|
   0510: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   0520: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   0530: 00 00 00 00 00 32 af 76 86 d4 03 cf 45 b5 d9 5f |.....2.v....E.._|
   0540: 2d 70 ce be a5 87 ac 80 6a 00 00 00 00 00 00 00 |-p......j.......|
   0550: 00 00 00 00 02 44 0a 00 00 00 00 00 00 00 05 45 |.....D.........E|
   0560: 00 00 00 62 9c 6f d0 35 0a 6c 0d 0c 49 d4 a9 c5 |...b.o.5.l..I...|
   0570: 01 7c f0 70 43 f5 4e 58 00 00 00 00 00 00 00 00 |.|.pC.NX........|
   0580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   0590: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   05a0: 95 20 ee a7 81 bc ca 16 c1 e1 5a cc 0b a1 43 35 |. ........Z...C5|
   05b0: a0 e8 e5 ba 00 00 00 00 00 00 00 00 00 00 00 02 |................|
   05c0: 45 0a 00 00 00 00 00 00 00 05 48 00 00 00 62 85 |E.........H...b.|
   05d0: 00 18 9e 74 a9 e0 47 5e 82 20 93 bc 7d b0 d6 31 |...t..G^. ..}..1|
   05e0: ae b0 b4 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   05f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
   0600: 00 00 00 00 00 00 00 00 00 00 00 02 de 42 19 6e |.............B.n|
   0610: be e4 2e f2 84 b6 78 0a 87 cd c9 6e 8e aa b6 00 |......x....n....|
   0620: 00 00 00 00 00 00 00 00 00 00 02 48 0a 00 00 00 |...........H....|
   0630: 00 00 00 00 00 00 00 00 00 00 00 00 00          |.............|
 
   $ hg debugbundle ../rev.hg2
   Stream params: {}
   changegroup -- {}
       32af7686d403cf45b5d95f2d70cebea587ac806a
       9520eea781bcca16c1e15acc0ba14335a0e8e5ba
       eea13746799a9e0bfd88f29d3c2e9dc9389f524f
       02de42196ebee42ef284b6780a87cdc96e8eaab6
   $ hg unbundle ../rev.hg2
   adding changesets
   adding manifests
   adding file changes
   added 0 changesets with 0 changes to 3 files
   (run 'hg update' to get a working copy)
 
 with reply
 
   $ hg bundle2 --rev '8+7+5+4' --reply ../rev-rr.hg2
   $ hg unbundle2 ../rev-reply.hg2 < ../rev-rr.hg2
   0 unread bytes
   addchangegroup return: 1
 
   $ f --hexdump ../rev-reply.hg2
   ../rev-reply.hg2:
   0000: 48 47 32 30 00 00 00 00 00 00 00 2f 11 72 65 70 |HG20......./.rep|
   0010: 6c 79 3a 63 68 61 6e 67 65 67 72 6f 75 70 00 00 |ly:changegroup..|
   0020: 00 00 00 02 0b 01 06 01 69 6e 2d 72 65 70 6c 79 |........in-reply|
   0030: 2d 74 6f 31 72 65 74 75 72 6e 31 00 00 00 00 00 |-to1return1.....|
   0040: 00 00 1b 06 6f 75 74 70 75 74 00 00 00 01 00 01 |....output......|
   0050: 0b 01 69 6e 2d 72 65 70 6c 79 2d 74 6f 31 00 00 |..in-reply-to1..|
   0060: 00 64 61 64 64 69 6e 67 20 63 68 61 6e 67 65 73 |.dadding changes|
   0070: 65 74 73 0a 61 64 64 69 6e 67 20 6d 61 6e 69 66 |ets.adding manif|
   0080: 65 73 74 73 0a 61 64 64 69 6e 67 20 66 69 6c 65 |ests.adding file|
   0090: 20 63 68 61 6e 67 65 73 0a 61 64 64 65 64 20 30 | changes.added 0|
   00a0: 20 63 68 61 6e 67 65 73 65 74 73 20 77 69 74 68 | changesets with|
   00b0: 20 30 20 63 68 61 6e 67 65 73 20 74 6f 20 33 20 | 0 changes to 3 |
   00c0: 66 69 6c 65 73 0a 00 00 00 00 00 00 00 00       |files.........|
 
 Check handling of exception during generation.
 ----------------------------------------------
 
   $ hg bundle2 --genraise > ../genfailed.hg2
   abort: Someone set up us the bomb!
   [255]
 
 Should still be a valid bundle
 
   $ f --hexdump ../genfailed.hg2
   ../genfailed.hg2:
   0000: 48 47 32 30 00 00 00 00 00 00 00 0d 06 6f 75 74 |HG20.........out|
   0010: 70 75 74 00 00 00 00 00 00 ff ff ff ff 00 00 00 |put.............|
   0020: 48 0b 65 72 72 6f 72 3a 61 62 6f 72 74 00 00 00 |H.error:abort...|
   0030: 00 01 00 07 2d 6d 65 73 73 61 67 65 75 6e 65 78 |....-messageunex|
   0040: 70 65 63 74 65 64 20 65 72 72 6f 72 3a 20 53 6f |pected error: So|
   0050: 6d 65 6f 6e 65 20 73 65 74 20 75 70 20 75 73 20 |meone set up us |
   0060: 74 68 65 20 62 6f 6d 62 21 00 00 00 00 00 00 00 |the bomb!.......|
   0070: 00                                              |.|
 
 And its handling on the other size raise a clean exception
 
   $ cat ../genfailed.hg2 | hg unbundle2
   0 unread bytes
   abort: unexpected error: Someone set up us the bomb!
   [255]
 
 Test compression
 ================
 
 Simple case where it just work: GZ
 ----------------------------------
 
   $ hg bundle2 --compress GZ --rev '8+7+5+4' ../rev.hg2.bz
   $ f --hexdump ../rev.hg2.bz
   ../rev.hg2.bz:
   0000: 48 47 32 30 00 00 00 0e 43 6f 6d 70 72 65 73 73 |HG20....Compress|
   0010: 69 6f 6e 3d 47 5a 78 9c 95 94 7d 68 95 55 1c c7 |ion=GZx...}h.U..|
   0020: 9f 3b 31 e8 ce fa c3 65 be a0 a4 b4 52 b9 29 e7 |.;1....e....R.).|
   0030: f5 79 ce 89 fa 63 ed 5e 77 8b 9c c3 3f 2a 1c 68 |.y...c.^w...?*.h|
   0040: cf 79 9b dd 6a ae b0 28 74 b8 e5 96 5b bb 86 61 |.y..j..(t...[..a|
   0050: a3 15 6e 3a 71 c8 6a e8 a5 da 95 64 28 22 ce 69 |..n:q.j....d(".i|
   0060: cd 06 59 34 28 2b 51 2a 58 c3 17 56 2a 9a 9d 67 |..Y4(+Q*X..V*..g|
   0070: dc c6 35 9e c4 1d f8 9e 87 f3 9c f3 3b bf 0f bf |..5.........;...|
   0080: 97 e3 38 ce f4 42 b9 d6 af ae d2 55 af ae 7b ad |..8..B.....U..{.|
   0090: c6 c9 8d bb 8a ec b4 07 ed 7f fd ed d3 53 be 4e |.............S.N|
   00a0: f4 0e af 59 52 73 ea 50 d7 96 9e ba d4 9a 1f 87 |...YRs.P........|
   00b0: 9b 9f 1d e8 7a 6a 79 e9 cb 7f cf eb fe 7e d3 82 |....zjy......~..|
   00c0: ce 2f 36 38 21 23 cc 36 b7 b5 38 90 ab a1 21 92 |./68!#.6..8...!.|
   00d0: 78 5a 0a 8a b1 31 0a 48 a6 29 92 4a 32 e6 1b e1 |xZ...1.H.).J2...|
   00e0: 4a 85 b9 46 40 46 ed 61 63 b5 d6 aa 20 1e ac 5e |[e-mail]... ..^|
   00f0: b0 0a ae 8a c4 03 c6 d6 f9 a3 7b eb fb 4e de 7f |..........{..N..|
   0100: e4 97 55 5f 15 76 96 d2 5d bf 9d 3f 38 18 29 4c |..U_.v..]..?8.)L|
   0110: 0f b7 5d 6e 9b b3 aa 7e c6 d5 15 5b f7 7c 52 f1 |..]n...~...[.|R.|
   0120: 7c 73 18 63 98 6d 3e 23 51 5a 6a 2e 19 72 8d cb ||s.c.m>#QZj..r..|
   0130: 09 07 14 78 82 33 e9 62 86 7d 0c 00 17 88 53 86 |...x.3.b.}....S.|
   0140: 3d 75 0b 63 e2 16 c6 84 9d 76 8f 76 7a cb de fc |=u.c.....v.vz...|
   0150: a8 a3 f0 46 d3 a5 f6 c7 96 b6 9f 60 3b 57 ae 28 |...F.......`;W.(|
   0160: ce b2 8d e9 f4 3e 6f 66 53 dd e5 6b ad 67 be f9 |.....>ofS..k.g..|
   0170: 72 ee 5f 8d 61 3c 61 b6 f9 8c d8 a5 82 63 45 3d |r._.a<a......cE=|
   0180: a3 0c 61 90 68 24 28 87 50 b9 c2 97 c6 20 01 11 |..a.h$(.P.... ..|
   0190: 80 84 10 98 cf e8 e4 13 96 05 51 2c 38 f3 c4 ec |..........Q,8...|
   01a0: ea 43 e7 96 5e 6a c8 be 11 dd 32 78 a2 fa dd 8f |.C..^j....2x....|
   01b0: b3 61 84 61 51 0c b3 cd 27 64 42 6b c2 b4 92 1e |.a.aQ...'dBk....|
   01c0: 86 8c 12 68 24 00 10 db 7f 50 00 c6 91 e7 fa 4c |...h$....P.....L|
   01d0: 22 22 cc bf 84 81 0a 92 c1 aa 2a c7 1b 49 e6 ee |""........*..I..|
   01e0: 6b a9 7e e0 e9 b2 91 5e 7c 73 68 e0 fc 23 3f 34 |k.~....^|sh..#?4|
   01f0: ed cf 0e f2 b3 d3 4c d7 ae 59 33 6f 8c 3d b8 63 |......L..Y3o.=.c|
   0200: 21 2b e8 3d e0 6f 9d 3a b7 f9 dc 24 2a b2 3e a7 |!+.=.o.:...$*.>.|
   0210: 58 dc 91 d8 40 e9 23 8e 88 84 ae 0f b9 00 2e b5 |X...@.#.........|
   0220: 74 36 f3 40 53 40 34 15 c0 d7 12 8d e7 bb 65 f9 |t6.@S@4.......e.|
   0230: c8 ef 03 0f ff f9 fe b6 8a 0d 6d fd ec 51 70 f7 |..........m..Qp.|
   0240: a7 ad 9b 6b 9d da 74 7b 53 43 d1 43 63 fd 19 f9 |...k..t{SC.Cc...|
   0250: ca 67 95 e5 ef c4 e6 6c 9e 44 e1 c5 ac 7a 82 6f |.g.....l.D...z.o|
   0260: c2 e1 d2 b5 2d 81 29 f0 5d 09 6c 6f 10 ae 88 cf |....-.).].lo....|
   0270: 25 05 d0 93 06 78 80 60 43 2d 10 1b 47 71 2b b7 |%....x.`C-..Gq+.|
   0280: 7f bb e9 a7 e4 7d 67 7b df 9b f7 62 cf cd d8 f4 |.....}g{...b....|
   0290: 48 bc 64 51 57 43 ff ea 8b 0b ae 74 64 53 07 86 |H.dQWC.....tdS..|
   02a0: fa 66 3c 5e f7 e1 af a7 c2 90 ff a7 be 9e c9 29 |.f<^...........)|
   02b0: b6 cc 41 48 18 69 94 8b 7c 04 7d 8c 98 a7 95 50 |..AH.i..|.}....P|
   02c0: 44 d9 d0 20 c8 14 30 14 51 ad 6c 16 03 94 0f 5a |D.. ..0.Q.l....Z|
   02d0: 46 93 7f 1c 87 8d 25 d7 9d a2 d1 92 4c f3 c2 54 |F.....%.....L..T|
   02e0: ba f8 70 18 ca 24 0a 29 96 43 71 f2 93 95 74 18 |..p..$.).Cq...t.|
   02f0: b5 65 c4 b8 f6 6c 5c 34 20 1e d5 0c 21 c0 b1 90 |.e...l\4 ...!...|
   0300: 9e 12 40 b9 18 fa 5a 00 41 a2 39 d3 a9 c1 73 21 |..@...Z.A.9...s!|
   0310: 8e 5e 3c b9 b8 f8 48 6a 76 46 a7 1a b6 dd 5b 51 |.^<...HjvF....[Q|
   0320: 5e 19 1d 59 12 c6 32 89 02 9a c0 8f 4f b8 0a ba |^..Y..2.....O...|
   0330: 5e ec 58 37 44 a3 2f dd 33 ed c9 d3 dd c7 22 1b |^.X7D./.3.....".|
   0340: 2f d4 94 8e 95 3f 77 a7 ae 6e f3 32 8d bb 4a 4c |/....?w..n.2..JL|
   0350: b8 0a 5a 43 34 3a b3 3a d6 77 ff 5c b6 fa ad f9 |..ZC4:.:.w.\....|
   0360: db fb 6a 33 df c1 7d 99 cf ef d4 d5 6d da 77 7c |..j3..}.....m.w||
   0370: 3b 19 fd af c5 3f f1 60 c3 17                   |;....?.`..|
   $ hg debugbundle ../rev.hg2.bz
   Stream params: {Compression: GZ}
   changegroup -- {}
       32af7686d403cf45b5d95f2d70cebea587ac806a
       9520eea781bcca16c1e15acc0ba14335a0e8e5ba
       eea13746799a9e0bfd88f29d3c2e9dc9389f524f
       02de42196ebee42ef284b6780a87cdc96e8eaab6
   $ hg unbundle ../rev.hg2.bz
   adding changesets
   adding manifests
   adding file changes
   added 0 changesets with 0 changes to 3 files
   (run 'hg update' to get a working copy)
 Simple case where it just work: BZ
 ----------------------------------
 
   $ hg bundle2 --compress BZ --rev '8+7+5+4' ../rev.hg2.bz
   $ f --hexdump ../rev.hg2.bz
   ../rev.hg2.bz:
   0000: 48 47 32 30 00 00 00 0e 43 6f 6d 70 72 65 73 73 |HG20....Compress|
   0010: 69 6f 6e 3d 42 5a 42 5a 68 39 31 41 59 26 53 59 |ion=BZBZh91AY&SY|
   0020: a3 4b 18 3d 00 00 1a 7f ff ff bf 5f f6 ef ef 7f |.K.=......._....|
   0030: f6 3f f7 d1 d9 ff ff f7 6e ff ff 6e f7 f6 bd df |.?......n..n....|
   0040: b5 ab ff cf 67 f6 e7 7b f7 c0 02 d7 33 82 8b 51 |....g..{....3..Q|
   0050: 04 a5 53 d5 3d 27 a0 99 18 4d 0d 34 00 d1 a1 e8 |..S.='...M.4....|
   0060: 80 c8 7a 87 a9 a3 43 6a 3d 46 86 26 80 34 3d 40 |..z...Cj=F.&.4=@|
   0070: c8 c9 b5 34 f4 8f 48 0f 51 ea 34 34 fd 4d aa 19 |...4..H.Q.44.M..|
   0080: 03 40 0c 08 da 86 43 d4 f5 0f 42 1e a0 f3 54 33 |.@....C...B...T3|
   0090: 54 d3 13 4d 03 40 32 00 00 32 03 26 80 0d 00 0d |T..M.@2..2.&....|
   00a0: 00 68 c8 c8 03 20 32 30 98 8c 80 00 00 03 4d 00 |.h... 20......M.|
   00b0: c8 00 00 0d 00 00 22 99 a1 34 c2 64 a6 d5 34 1a |......"..4.d..4.|
   00c0: 00 00 06 86 83 4d 07 a8 d1 a0 68 01 a0 00 00 00 |.....M....h.....|
   00d0: 00 0d 06 80 00 00 00 0d 00 03 40 00 00 04 a4 a1 |..........@.....|
   00e0: 4d a9 89 89 b4 9a 32 0c 43 46 86 87 a9 8d 41 9a |M.....2.CF....A.|
   00f0: 98 46 9a 0d 31 32 1a 34 0d 0c 8d a2 0c 98 4d 06 |.F..12.4......M.|
   0100: 8c 40 c2 60 8d 0d 0c 20 c9 89 fa a0 d0 d3 21 a1 |.@.`... ......!.|
   0110: ea 34 d3 68 9e a6 d1 74 05 33 cb 66 96 93 28 64 |.4.h...t.3.f..(d|
   0120: 40 91 22 ac 55 9b ea 40 7b 38 94 e2 f8 06 00 cb |@.".U..@{8......|
   0130: 28 02 00 4d ab 40 24 10 43 18 cf 64 b4 06 83 0c |(..M.@$.C..d....|
   0140: 34 6c b4 a3 d4 0a 0a e4 a8 5c 4e 23 c0 c9 7a 31 |4l.......\N#..z1|
   0150: 97 87 77 7a 64 88 80 8e 60 97 20 93 0f 8e eb c4 |..wzd...`. .....|
   0160: 62 a4 44 a3 52 20 b2 99 a9 2e e1 d7 29 4a 54 ac |b.D.R ......)JT.|
   0170: 44 7a bb cc 04 3d e0 aa bd 6a 33 5e 9b a2 57 36 |Dz...=...j3^..W6|
   0180: fa cb 45 bb 6d 3e c1 d9 d9 f5 83 69 8a d0 e0 e2 |..E.m>.....i....|
   0190: e7 ae 90 55 24 da 3f ab 78 c0 4c b4 56 a3 9e a4 |...U$.?.x.L.V...|
   01a0: af 9c 65 74 86 ec 6d dc 62 dc 33 ca c8 50 dd 9d |..et..m.b.3..P..|
   01b0: 98 8e 9e 59 20 f3 f0 42 91 4a 09 f5 75 8d 3d a5 |...Y ..B.J..u.=.|
   01c0: a5 15 cb 8d 10 63 b0 c2 2e b2 81 f7 c1 76 0e 53 |.....c.......v.S|
   01d0: 6c 0e 46 73 b5 ae 67 f9 4c 0b 45 6b a8 32 2a 2f |l.Fs..g.L.Ek.2*/|
   01e0: a2 54 a4 44 05 20 a1 38 d1 a4 c6 09 a8 2b 08 99 |.T.D. .8.....+..|
   01f0: a4 14 ae 8d a3 e3 aa 34 27 d8 44 ca c3 5d 21 8b |.......4'.D..]!.|
   0200: 1a 1e 97 29 71 2b 09 4a 4a 55 55 94 58 65 b2 bc |...)q+.JJUU.Xe..|
   0210: f3 a5 90 26 36 76 67 7a 51 98 d6 8a 4a 99 50 b5 |...&6vgzQ...J.P.|
   0220: 99 8f 94 21 17 a9 8b f3 ad 4c 33 d4 2e 40 c8 0c |...!.....L3..@..|
   0230: 3b 90 53 39 db 48 02 34 83 48 d6 b3 99 13 d2 58 |;.S9.H.4.H.....X|
   0240: 65 8e 71 ac a9 06 95 f2 c4 8e b4 08 6b d3 0c ae |e.q.........k...|
   0250: d9 90 56 71 43 a7 a2 62 16 3e 50 63 d3 57 3c 2d |..VqC..b.>Pc.W<-|
   0260: 9f 0f 34 05 08 d8 a6 4b 59 31 54 66 3a 45 0c 8a |..4....KY1Tf:E..|
   0270: c7 90 3a f0 6a 83 1b f5 ca fb 80 2b 50 06 fb 51 |..:.j......+P..Q|
   0280: 7e a6 a4 d4 81 44 82 21 54 00 5b 1a 30 83 62 a3 |~....D.!T.[.0.b.|
   0290: 18 b6 24 19 1e 45 df 4d 5c db a6 af 5b ac 90 fa |..$..E.M\...[...|
   02a0: 3e ed f9 ec 4c ba 36 ee d8 60 20 a7 c7 3b cb d1 |>...L.6..` ..;..|
   02b0: 90 43 7d 27 16 50 5d ad f4 14 07 0b 90 5c cc 6b |.C}'.P]......\.k|
   02c0: 8d 3f a6 88 f4 34 37 a8 cf 14 63 36 19 f7 3e 28 |.?...47...c6..>(|
   02d0: de 99 e8 16 a4 9d 0d 40 a1 a7 24 52 14 a6 72 62 |.......@..$R..rb|
   02e0: 59 5a ca 2d e5 51 90 78 88 d9 c6 c7 21 d0 f7 46 |YZ.-.Q.x....!..F|
   02f0: b2 04 46 44 4e 20 9c 12 b1 03 4e 25 e0 a9 0c 58 |..FDN ....N%...X|
   0300: 5b 1d 3c 93 20 01 51 de a9 1c 69 23 32 46 14 b4 |[.<. .Q...i#2F..|
   0310: 90 db 17 98 98 50 03 90 29 aa 40 b0 13 d8 43 d2 |.....P..).@...C.|
   0320: 5f c5 9d eb f3 f2 ad 41 e8 7a a9 ed a1 58 84 a6 |_......A.z...X..|
   0330: 42 bf d6 fc 24 82 c1 20 32 26 4a 15 a6 1d 29 7f |B...$.. 2&J...).|
   0340: 7e f4 3d 07 bc 62 9a 5b ec 44 3d 72 1d 41 8b 5c |~.=..b.[.D=r.A.\|
   0350: 80 de 0e 62 9a 2e f8 83 00 d5 07 a0 9c c6 74 98 |...b..........t.|
   0360: 11 b2 5e a9 38 02 03 ee fd 86 5c f4 86 b3 ae da |..^.8.....\.....|
   0370: 05 94 01 c5 c6 ea 18 e6 ba 2a ba b3 04 5c 96 89 |.........*...\..|
   0380: 72 63 5b 10 11 f6 67 34 98 cb e4 c0 4e fa e6 99 |rc[...g4....N...|
   0390: 19 6e 50 e8 26 8d 0c 17 e0 be ef e1 8e 02 6f 32 |.nP.&.........o2|
   03a0: 82 dc 26 f8 a1 08 f3 8a 0d f3 c4 75 00 48 73 b8 |..&........u.Hs.|
   03b0: be 3b 0d 7f d0 fd c7 78 96 ec e0 03 80 68 4d 8d |.;.....x.....hM.|
   03c0: 43 8c d7 68 58 f9 50 f0 18 cb 21 58 1b 60 cd 1f |C..hX.P...!X.`..|
   03d0: 84 36 2e 16 1f 0a f7 4e 8f eb df 01 2d c2 79 0b |.6.....N....-.y.|
   03e0: f7 24 ea 0d e8 59 86 51 6e 1c 30 a3 ad 2f ee 8c |.$...Y.Qn.0../..|
   03f0: 90 c8 84 d5 e8 34 c1 95 b2 c9 f6 4d 87 1c 7d 19 |.....4.....M..}.|
   0400: d6 41 58 56 7a e0 6c ba 10 c7 e8 33 39 36 96 e7 |.AXVz.l....396..|
   0410: d2 f9 59 9a 08 95 48 38 e7 0b b7 0a 24 67 c4 39 |..Y...H8....$g.9|
   0420: 8b 43 88 57 9c 01 f5 61 b5 e1 27 41 7e af 83 fe |.C.W...a..'A~...|
   0430: 2e e4 8a 70 a1 21 46 96 30 7a                   |...p.!F.0z|
   $ hg debugbundle ../rev.hg2.bz
   Stream params: {Compression: BZ}
   changegroup -- {}
       32af7686d403cf45b5d95f2d70cebea587ac806a
       9520eea781bcca16c1e15acc0ba14335a0e8e5ba
       eea13746799a9e0bfd88f29d3c2e9dc9389f524f
       02de42196ebee42ef284b6780a87cdc96e8eaab6
   $ hg unbundle ../rev.hg2.bz
   adding changesets
   adding manifests
   adding file changes
   added 0 changesets with 0 changes to 3 files
   (run 'hg update' to get a working copy)
 
 unknown compression while unbundling
 -----------------------------
 
   $ hg bundle2 --param Compression=FooBarUnknown --rev '8+7+5+4' ../rev.hg2.bz
   $ cat ../rev.hg2.bz | hg statbundle2
   abort: unknown parameters: Stream Parameter - Compression='FooBarUnknown'
   [255]
   $ hg unbundle ../rev.hg2.bz
   abort: ../rev.hg2.bz: unknown bundle feature, Stream Parameter - Compression='FooBarUnknown'
   (see https://mercurial-scm.org/wiki/BundleFeature for more information)
   [255]
 
   $ cd ..

tests/test-bundle2-multiple-changegroups.t

@@ -1,260 +1,260 b''
 Create an extension to test bundle2 with multiple changegroups
 
   $ cat > bundle2.py <<EOF
   > """
   > """
   > from mercurial import changegroup, discovery, exchange
   > 
   > def _getbundlechangegrouppart(bundler, repo, source, bundlecaps=None,
   >                               b2caps=None, heads=None, common=None,
   >                               **kwargs):
   >     # Create two changegroups given the common changesets and heads for the
   >     # changegroup part we are being requested. Use the parent of each head
   >     # in 'heads' as intermediate heads for the first changegroup.
   >     intermediates = [repo[r].p1().node() for r in heads]
   >     outgoing = discovery.outgoing(repo, common, intermediates)
-  >     cg = changegroup.getchangegroup(repo, source, outgoing,
-  >                                     bundlecaps=bundlecaps)
+  >     cg = changegroup.makechangegroup(repo, outgoing, '01',
+  >                                      source, bundlecaps=bundlecaps)
   >     bundler.newpart('output', data='changegroup1')
   >     bundler.newpart('changegroup', data=cg.getchunks())
   >     outgoing = discovery.outgoing(repo, common + intermediates, heads)
-  >     cg = changegroup.getchangegroup(repo, source, outgoing,
-  >                                     bundlecaps=bundlecaps)
+  >     cg = changegroup.makechangegroup(repo, outgoing, '01',
+  >                                      source, bundlecaps=bundlecaps)
   >     bundler.newpart('output', data='changegroup2')
   >     bundler.newpart('changegroup', data=cg.getchunks())
   > 
   > def _pull(repo, *args, **kwargs):
   >   pullop = _orig_pull(repo, *args, **kwargs)
   >   repo.ui.write('pullop.cgresult is %d\n' % pullop.cgresult)
   >   return pullop
   > 
   > _orig_pull = exchange.pull
   > exchange.pull = _pull
   > exchange.getbundle2partsmapping['changegroup'] = _getbundlechangegrouppart
   > EOF
 
   $ cat >> $HGRCPATH << EOF
   > [ui]
   > logtemplate={rev}:{node|short} {phase} {author} {bookmarks} {desc|firstline}
   > EOF
 
 Start with a simple repository with a single commit
 
   $ hg init repo
   $ cd repo
   $ cat > .hg/hgrc << EOF
   > [extensions]
   > bundle2=$TESTTMP/bundle2.py
   > EOF
 
   $ echo A > A
   $ hg commit -A -m A -q
   $ cd ..
 
 Clone
 
   $ hg clone -q repo clone
 
 Add two linear commits
 
   $ cd repo
   $ echo B > B
   $ hg commit -A -m B -q
   $ echo C > C
   $ hg commit -A -m C -q
 
   $ cd ../clone
   $ cat >> .hg/hgrc <<EOF
   > [hooks]
   > pretxnchangegroup = sh -c "printenv.py pretxnchangegroup"
   > changegroup = sh -c "printenv.py changegroup"
   > incoming = sh -c "printenv.py incoming"
   > EOF
 
 Pull the new commits in the clone
 
   $ hg pull
   pulling from $TESTTMP/repo (glob)
   searching for changes
   remote: changegroup1
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup HG_HOOKTYPE=pretxnchangegroup HG_NODE=27547f69f25460a52fff66ad004e58da7ad3fb56 HG_NODE_LAST=27547f69f25460a52fff66ad004e58da7ad3fb56 HG_PENDING=$TESTTMP/clone HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   remote: changegroup2
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup HG_HOOKTYPE=pretxnchangegroup HG_NODE=f838bfaca5c7226600ebcfd84f3c3c13a28d3757 HG_NODE_LAST=f838bfaca5c7226600ebcfd84f3c3c13a28d3757 HG_PENDING=$TESTTMP/clone HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   changegroup hook: HG_HOOKNAME=changegroup HG_HOOKTYPE=changegroup HG_NODE=27547f69f25460a52fff66ad004e58da7ad3fb56 HG_NODE_LAST=27547f69f25460a52fff66ad004e58da7ad3fb56 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=27547f69f25460a52fff66ad004e58da7ad3fb56 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   changegroup hook: HG_HOOKNAME=changegroup HG_HOOKTYPE=changegroup HG_NODE=f838bfaca5c7226600ebcfd84f3c3c13a28d3757 HG_NODE_LAST=f838bfaca5c7226600ebcfd84f3c3c13a28d3757 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=f838bfaca5c7226600ebcfd84f3c3c13a28d3757 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   pullop.cgresult is 1
   (run 'hg update' to get a working copy)
   $ hg update
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg log -G
   @  2:f838bfaca5c7 public test  C
   |
   o  1:27547f69f254 public test  B
   |
   o  0:4a2df7238c3b public test  A
   
 Add more changesets with multiple heads to the original repository
 
   $ cd ../repo
   $ echo D > D
   $ hg commit -A -m D -q
   $ hg up -r 1
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo E > E
   $ hg commit -A -m E -q
   $ echo F > F
   $ hg commit -A -m F -q
   $ hg up -r 1
   0 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ echo G > G
   $ hg commit -A -m G -q
   $ hg up -r 3
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo H > H
   $ hg commit -A -m H -q
   $ hg log -G
   @  7:5cd59d311f65 draft test  H
   |
   | o  6:1d14c3ce6ac0 draft test  G
   | |
   | | o  5:7f219660301f draft test  F
   | | |
   | | o  4:8a5212ebc852 draft test  E
   | |/
   o |  3:b3325c91a4d9 draft test  D
   | |
   o |  2:f838bfaca5c7 draft test  C
   |/
   o  1:27547f69f254 draft test  B
   |
   o  0:4a2df7238c3b draft test  A
   
 New heads are reported during transfer and properly accounted for in
 pullop.cgresult
 
   $ cd ../clone
   $ hg pull
   pulling from $TESTTMP/repo (glob)
   searching for changes
   remote: changegroup1
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files (+1 heads)
   pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup HG_HOOKTYPE=pretxnchangegroup HG_NODE=b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e HG_NODE_LAST=8a5212ebc8527f9fb821601504794e3eb11a1ed3 HG_PENDING=$TESTTMP/clone HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   remote: changegroup2
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 3 changes to 3 files (+1 heads)
   pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup HG_HOOKTYPE=pretxnchangegroup HG_NODE=7f219660301fe4c8a116f714df5e769695cc2b46 HG_NODE_LAST=5cd59d311f6508b8e0ed28a266756c859419c9f1 HG_PENDING=$TESTTMP/clone HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   changegroup hook: HG_HOOKNAME=changegroup HG_HOOKTYPE=changegroup HG_NODE=b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e HG_NODE_LAST=8a5212ebc8527f9fb821601504794e3eb11a1ed3 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=8a5212ebc8527f9fb821601504794e3eb11a1ed3 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   changegroup hook: HG_HOOKNAME=changegroup HG_HOOKTYPE=changegroup HG_NODE=7f219660301fe4c8a116f714df5e769695cc2b46 HG_NODE_LAST=5cd59d311f6508b8e0ed28a266756c859419c9f1 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=7f219660301fe4c8a116f714df5e769695cc2b46 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=1d14c3ce6ac0582d2809220d33e8cd7a696e0156 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=5cd59d311f6508b8e0ed28a266756c859419c9f1 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   pullop.cgresult is 3
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg log -G
   o  7:5cd59d311f65 public test  H
   |
   | o  6:1d14c3ce6ac0 public test  G
   | |
   | | o  5:7f219660301f public test  F
   | | |
   | | o  4:8a5212ebc852 public test  E
   | |/
   o |  3:b3325c91a4d9 public test  D
   | |
   @ |  2:f838bfaca5c7 public test  C
   |/
   o  1:27547f69f254 public test  B
   |
   o  0:4a2df7238c3b public test  A
   
 Removing a head from the original repository by merging it
 
   $ cd ../repo
   $ hg merge -r 6 -q
   $ hg commit -m Merge
   $ echo I > I
   $ hg commit -A -m H -q
   $ hg log -G
   @  9:9d18e5bd9ab0 draft test  H
   |
   o    8:71bd7b46de72 draft test  Merge
   |\
   | o  7:5cd59d311f65 draft test  H
   | |
   o |  6:1d14c3ce6ac0 draft test  G
   | |
   | | o  5:7f219660301f draft test  F
   | | |
   +---o  4:8a5212ebc852 draft test  E
   | |
   | o  3:b3325c91a4d9 draft test  D
   | |
   | o  2:f838bfaca5c7 draft test  C
   |/
   o  1:27547f69f254 draft test  B
   |
   o  0:4a2df7238c3b draft test  A
   
 Removed heads are reported during transfer and properly accounted for in
 pullop.cgresult
 
   $ cd ../clone
   $ hg pull
   pulling from $TESTTMP/repo (glob)
   searching for changes
   remote: changegroup1
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 0 changes to 0 files (-1 heads)
   pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup HG_HOOKTYPE=pretxnchangegroup HG_NODE=71bd7b46de72e69a32455bf88d04757d542e6cf4 HG_NODE_LAST=71bd7b46de72e69a32455bf88d04757d542e6cf4 HG_PENDING=$TESTTMP/clone HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   remote: changegroup2
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   pretxnchangegroup hook: HG_HOOKNAME=pretxnchangegroup HG_HOOKTYPE=pretxnchangegroup HG_NODE=9d18e5bd9ab09337802595d49f1dad0c98df4d84 HG_NODE_LAST=9d18e5bd9ab09337802595d49f1dad0c98df4d84 HG_PENDING=$TESTTMP/clone HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   changegroup hook: HG_HOOKNAME=changegroup HG_HOOKTYPE=changegroup HG_NODE=71bd7b46de72e69a32455bf88d04757d542e6cf4 HG_NODE_LAST=71bd7b46de72e69a32455bf88d04757d542e6cf4 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=71bd7b46de72e69a32455bf88d04757d542e6cf4 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   changegroup hook: HG_HOOKNAME=changegroup HG_HOOKTYPE=changegroup HG_NODE=9d18e5bd9ab09337802595d49f1dad0c98df4d84 HG_NODE_LAST=9d18e5bd9ab09337802595d49f1dad0c98df4d84 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   incoming hook: HG_HOOKNAME=incoming HG_HOOKTYPE=incoming HG_NODE=9d18e5bd9ab09337802595d49f1dad0c98df4d84 HG_PHASES_MOVED=1 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=file:$TESTTMP/repo
   pullop.cgresult is -2
   (run 'hg update' to get a working copy)
   $ hg log -G
   o  9:9d18e5bd9ab0 public test  H
   |
   o    8:71bd7b46de72 public test  Merge
   |\
   | o  7:5cd59d311f65 public test  H
   | |
   o |  6:1d14c3ce6ac0 public test  G
   | |
   | | o  5:7f219660301f public test  F
   | | |
   +---o  4:8a5212ebc852 public test  E
   | |
   | o  3:b3325c91a4d9 public test  D
   | |
   | @  2:f838bfaca5c7 public test  C
   |/
   o  1:27547f69f254 public test  B
   |
   o  0:4a2df7238c3b public test  A
   

tests/test-bundle2-remote-changegroup.t

@@ -1,590 +1,591 b''
 #require killdaemons
 
 Create an extension to test bundle2 remote-changegroup parts
 
   $ cat > bundle2.py << EOF
   > """A small extension to test bundle2 remote-changegroup parts.
   > 
   > Current bundle2 implementation doesn't provide a way to generate those
   > parts, so they must be created by extensions.
   > """
   > from mercurial import bundle2, changegroup, discovery, exchange, util
   > 
   > def _getbundlechangegrouppart(bundler, repo, source, bundlecaps=None,
   >                               b2caps=None, heads=None, common=None,
   >                               **kwargs):
   >     """this function replaces the changegroup part handler for getbundle.
   >     It allows to create a set of arbitrary parts containing changegroups
   >     and remote-changegroups, as described in a bundle2maker file in the
   >     repository .hg/ directory.
   > 
   >     Each line of that bundle2maker file contain a description of the
   >     part to add:
   >       - changegroup common_revset heads_revset
   >           Creates a changegroup part based, using common_revset and
   >           heads_revset for outgoing
   >       - remote-changegroup url file
   >           Creates a remote-changegroup part for a bundle at the given
   >           url. Size and digest, as required by the client, are computed
   >           from the given file.
   >       - raw-remote-changegroup <python expression>
   >           Creates a remote-changegroup part with the data given in the
   >           Python expression as parameters. The Python expression is
   >           evaluated with eval, and is expected to be a dict.
   >     """
   >     def newpart(name, data=''):
   >         """wrapper around bundler.newpart adding an extra part making the
   >         client output information about each processed part"""
   >         bundler.newpart('output', data=name)
   >         part = bundler.newpart(name, data=data)
   >         return part
   > 
   >     for line in open(repo.vfs.join('bundle2maker'), 'r'):
   >         line = line.strip()
   >         try:
   >             verb, args = line.split(None, 1)
   >         except ValueError:
   >             verb, args = line, ''
   >         if verb == 'remote-changegroup':
   >            url, file = args.split()
   >            bundledata = open(file, 'rb').read()
   >            digest = util.digester.preferred(b2caps['digests'])
   >            d = util.digester([digest], bundledata)
   >            part = newpart('remote-changegroup')
   >            part.addparam('url', url)
   >            part.addparam('size', str(len(bundledata)))
   >            part.addparam('digests', digest)
   >            part.addparam('digest:%s' % digest, d[digest])
   >         elif verb == 'raw-remote-changegroup':
   >            part = newpart('remote-changegroup')
   >            for k, v in eval(args).items():
   >                part.addparam(k, str(v))
   >         elif verb == 'changegroup':
   >             _common, heads = args.split()
   >             common.extend(repo.lookup(r) for r in repo.revs(_common))
   >             heads = [repo.lookup(r) for r in repo.revs(heads)]
   >             outgoing = discovery.outgoing(repo, common, heads)
-  >             cg = changegroup.getchangegroup(repo, 'changegroup', outgoing)
+  >             cg = changegroup.makechangegroup(repo, outgoing, '01',
+  >                                              'changegroup')
   >             newpart('changegroup', cg.getchunks())
   >         else:
   >             raise Exception('unknown verb')
   > 
   > exchange.getbundle2partsmapping['changegroup'] = _getbundlechangegrouppart
   > EOF
 
 Start a simple HTTP server to serve bundles
 
   $ $PYTHON "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid
   $ cat dumb.pid >> $DAEMON_PIDS
 
   $ cat >> $HGRCPATH << EOF
   > [ui]
   > ssh=$PYTHON "$TESTDIR/dummyssh"
   > logtemplate={rev}:{node|short} {phase} {author} {bookmarks} {desc|firstline}
   > EOF
 
   $ hg init repo
 
   $ hg -R repo unbundle $TESTDIR/bundles/rebase.hg
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   (run 'hg heads' to see heads, 'hg merge' to merge)
 
   $ hg -R repo log -G
   o  7:02de42196ebe draft Nicolas Dumazet <[e-mail]>  H
   |
   | o  6:eea13746799a draft Nicolas Dumazet <[e-mail]>  G
   |/|
   o |  5:24b6387c8c8c draft Nicolas Dumazet <[e-mail]>  F
   | |
   | o  4:9520eea781bc draft Nicolas Dumazet <[e-mail]>  E
   |/
   | o  3:32af7686d403 draft Nicolas Dumazet <[e-mail]>  D
   | |
   | o  2:5fddd98957c8 draft Nicolas Dumazet <[e-mail]>  C
   | |
   | o  1:42ccdea3bb16 draft Nicolas Dumazet <[e-mail]>  B
   |/
   o  0:cd010b8cd998 draft Nicolas Dumazet <[e-mail]>  A
   
   $ hg clone repo orig
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ cat > repo/.hg/hgrc << EOF
   > [extensions]
   > bundle2=$TESTTMP/bundle2.py
   > EOF
 
 Test a pull with an remote-changegroup
 
   $ hg bundle -R repo --type v1 --base '0:4' -r '5:7' bundle.hg
   3 changesets found
   $ cat > repo/.hg/bundle2maker << EOF
   > remote-changegroup http://localhost:$HGPORT/bundle.hg bundle.hg
   > EOF
   $ hg clone orig clone -r 3 -r 4
   adding changesets
   adding manifests
   adding file changes
   added 5 changesets with 5 changes to 5 files (+1 heads)
   updating to branch default
   4 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 2 changes to 2 files (+1 heads)
   (run 'hg heads .' to see heads, 'hg merge' to merge)
   $ hg -R clone log -G
   o  7:02de42196ebe public Nicolas Dumazet <[e-mail]>  H
   |
   | o  6:eea13746799a public Nicolas Dumazet <[e-mail]>  G
   |/|
   o |  5:24b6387c8c8c public Nicolas Dumazet <[e-mail]>  F
   | |
   | o  4:9520eea781bc public Nicolas Dumazet <[e-mail]>  E
   |/
   | @  3:32af7686d403 public Nicolas Dumazet <[e-mail]>  D
   | |
   | o  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
   | |
   | o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
   |/
   o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
   
   $ rm -rf clone
 
 Test a pull with an remote-changegroup and a following changegroup
 
   $ hg bundle -R repo --type v1 --base 2 -r '3:4' bundle2.hg
   2 changesets found
   $ cat > repo/.hg/bundle2maker << EOF
   > remote-changegroup http://localhost:$HGPORT/bundle2.hg bundle2.hg
   > changegroup 0:4 5:7
   > EOF
   $ hg clone orig clone -r 2
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 3 changes to 3 files
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files (+1 heads)
   remote: changegroup
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 2 changes to 2 files (+1 heads)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg -R clone log -G
   o  7:02de42196ebe public Nicolas Dumazet <[e-mail]>  H
   |
   | o  6:eea13746799a public Nicolas Dumazet <[e-mail]>  G
   |/|
   o |  5:24b6387c8c8c public Nicolas Dumazet <[e-mail]>  F
   | |
   | o  4:9520eea781bc public Nicolas Dumazet <[e-mail]>  E
   |/
   | o  3:32af7686d403 public Nicolas Dumazet <[e-mail]>  D
   | |
   | @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
   | |
   | o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
   |/
   o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
   
   $ rm -rf clone
 
 Test a pull with a changegroup followed by an remote-changegroup
 
   $ hg bundle -R repo --type v1 --base '0:4' -r '5:7' bundle3.hg
   3 changesets found
   $ cat > repo/.hg/bundle2maker << EOF
   > changegroup 000000000000 :4
   > remote-changegroup http://localhost:$HGPORT/bundle3.hg bundle3.hg
   > EOF
   $ hg clone orig clone -r 2
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 3 changes to 3 files
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: changegroup
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files (+1 heads)
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 2 changes to 2 files (+1 heads)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg -R clone log -G
   o  7:02de42196ebe public Nicolas Dumazet <[e-mail]>  H
   |
   | o  6:eea13746799a public Nicolas Dumazet <[e-mail]>  G
   |/|
   o |  5:24b6387c8c8c public Nicolas Dumazet <[e-mail]>  F
   | |
   | o  4:9520eea781bc public Nicolas Dumazet <[e-mail]>  E
   |/
   | o  3:32af7686d403 public Nicolas Dumazet <[e-mail]>  D
   | |
   | @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
   | |
   | o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
   |/
   o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
   
   $ rm -rf clone
 
 Test a pull with two remote-changegroups and a changegroup
 
   $ hg bundle -R repo --type v1 --base 2 -r '3:4' bundle4.hg
   2 changesets found
   $ hg bundle -R repo --type v1 --base '3:4' -r '5:6' bundle5.hg
   2 changesets found
   $ cat > repo/.hg/bundle2maker << EOF
   > remote-changegroup http://localhost:$HGPORT/bundle4.hg bundle4.hg
   > remote-changegroup http://localhost:$HGPORT/bundle5.hg bundle5.hg
   > changegroup 0:6 7
   > EOF
   $ hg clone orig clone -r 2
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 3 changes to 3 files
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files (+1 heads)
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 1 changes to 1 files
   remote: changegroup
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files (+1 heads)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg -R clone log -G
   o  7:02de42196ebe public Nicolas Dumazet <[e-mail]>  H
   |
   | o  6:eea13746799a public Nicolas Dumazet <[e-mail]>  G
   |/|
   o |  5:24b6387c8c8c public Nicolas Dumazet <[e-mail]>  F
   | |
   | o  4:9520eea781bc public Nicolas Dumazet <[e-mail]>  E
   |/
   | o  3:32af7686d403 public Nicolas Dumazet <[e-mail]>  D
   | |
   | @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
   | |
   | o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
   |/
   o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
   
   $ rm -rf clone
 
 Hash digest tests
 
   $ hg bundle -R repo --type v1 -a bundle6.hg
   8 changesets found
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'sha1', 'digest:sha1': '2c880cfec23cff7d8f80c2f12958d1563cbdaba6'}
   > EOF
   $ hg clone ssh://user@dummy/repo clone
   requesting all changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ rm -rf clone
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'md5', 'digest:md5': 'e22172c2907ef88794b7bea6642c2394'}
   > EOF
   $ hg clone ssh://user@dummy/repo clone
   requesting all changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ rm -rf clone
 
 Hash digest mismatch throws an error
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'sha1', 'digest:sha1': '0' * 40}
   > EOF
   $ hg clone ssh://user@dummy/repo clone
   requesting all changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   transaction abort!
   rollback completed
   abort: bundle at http://localhost:$HGPORT/bundle6.hg is corrupted:
   sha1 mismatch: expected 0000000000000000000000000000000000000000, got 2c880cfec23cff7d8f80c2f12958d1563cbdaba6
   [255]
 
 Multiple hash digests can be given
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'md5 sha1', 'digest:md5': 'e22172c2907ef88794b7bea6642c2394', 'digest:sha1': '2c880cfec23cff7d8f80c2f12958d1563cbdaba6'}
   > EOF
   $ hg clone ssh://user@dummy/repo clone
   requesting all changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ rm -rf clone
 
 If either of the multiple hash digests mismatches, an error is thrown
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'md5 sha1', 'digest:md5': '0' * 32, 'digest:sha1': '2c880cfec23cff7d8f80c2f12958d1563cbdaba6'}
   > EOF
   $ hg clone ssh://user@dummy/repo clone
   requesting all changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   transaction abort!
   rollback completed
   abort: bundle at http://localhost:$HGPORT/bundle6.hg is corrupted:
   md5 mismatch: expected 00000000000000000000000000000000, got e22172c2907ef88794b7bea6642c2394
   [255]
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'md5 sha1', 'digest:md5': 'e22172c2907ef88794b7bea6642c2394', 'digest:sha1': '0' * 40}
   > EOF
   $ hg clone ssh://user@dummy/repo clone
   requesting all changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 8 changesets with 7 changes to 7 files (+2 heads)
   transaction abort!
   rollback completed
   abort: bundle at http://localhost:$HGPORT/bundle6.hg is corrupted:
   sha1 mismatch: expected 0000000000000000000000000000000000000000, got 2c880cfec23cff7d8f80c2f12958d1563cbdaba6
   [255]
 
 Corruption tests
 
   $ hg clone orig clone -r 2
   adding changesets
   adding manifests
   adding file changes
   added 3 changesets with 3 changes to 3 files
   updating to branch default
   3 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ cat > repo/.hg/bundle2maker << EOF
   > remote-changegroup http://localhost:$HGPORT/bundle4.hg bundle4.hg
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle5.hg', 'size': 578, 'digests': 'sha1', 'digest:sha1': '0' * 40}
   > changegroup 0:6 7
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files (+1 heads)
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 1 changes to 1 files
   transaction abort!
   rollback completed
   abort: bundle at http://localhost:$HGPORT/bundle5.hg is corrupted:
   sha1 mismatch: expected 0000000000000000000000000000000000000000, got f29485d6bfd37db99983cfc95ecb52f8ca396106
   [255]
 
 The entire transaction has been rolled back in the pull above
 
   $ hg -R clone log -G
   @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
   |
   o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
   |
   o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
   
 
 No params
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {}
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   abort: remote-changegroup: missing "url" param
   [255]
 
 Missing size
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg'}
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   abort: remote-changegroup: missing "size" param
   [255]
 
 Invalid size
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg', 'size': 'foo'}
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   abort: remote-changegroup: invalid value for param "size"
   [255]
 
 Size mismatch
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg', 'size': 42}
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 2 changes to 2 files (+1 heads)
   transaction abort!
   rollback completed
   abort: bundle at http://localhost:$HGPORT/bundle4.hg is corrupted:
   size mismatch: expected 42, got 581
   [255]
 
 Unknown digest
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg', 'size': 581, 'digests': 'foo', 'digest:foo': 'bar'}
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   abort: missing support for remote-changegroup - digest:foo
   [255]
 
 Missing digest
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg', 'size': 581, 'digests': 'sha1'}
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   abort: remote-changegroup: missing "digest:sha1" param
   [255]
 
 Not an HTTP url
 
   $ cat > repo/.hg/bundle2maker << EOF
   > raw-remote-changegroup {'url': 'ssh://localhost:$HGPORT/bundle4.hg', 'size': 581}
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   abort: remote-changegroup does not support ssh urls
   [255]
 
 Not a bundle
 
   $ cat > notbundle.hg << EOF
   > foo
   > EOF
   $ cat > repo/.hg/bundle2maker << EOF
   > remote-changegroup http://localhost:$HGPORT/notbundle.hg notbundle.hg
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   abort: http://localhost:$HGPORT/notbundle.hg: not a Mercurial bundle
   [255]
 
 Not a bundle 1.0
 
   $ cat > notbundle10.hg << EOF
   > HG20
   > EOF
   $ cat > repo/.hg/bundle2maker << EOF
   > remote-changegroup http://localhost:$HGPORT/notbundle10.hg notbundle10.hg
   > EOF
   $ hg pull -R clone ssh://user@dummy/repo
   pulling from ssh://user@dummy/repo
   searching for changes
   remote: remote-changegroup
   abort: http://localhost:$HGPORT/notbundle10.hg: not a bundle version 1.0
   [255]
 
   $ hg -R clone log -G
   @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
   |
   o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
   |
   o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
   
   $ rm -rf clone
 
   $ killdaemons.py