streamclone: remove sleep based "synchronisation" in tests

Sleep based test synchronisation does not work.

Variation in machine performance and load can make the two process miss their
windows. Instead we migrate to explicit signaling through the file system as
other tests file are using.

Differential Revision: https://phab.mercurial-scm.org/D10478

tests/testlib/ext-stream-clone-steps.py

@@ -0,0 +1,31 b''
+from __future__ import absolute_import
+
+from mercurial import (
+    encoding,
+    extensions,
+    streamclone,
+    testing,
+)
+
+
+WALKED_FILE_1 = encoding.environ[b'HG_TEST_STREAM_WALKED_FILE_1']
+WALKED_FILE_2 = encoding.environ[b'HG_TEST_STREAM_WALKED_FILE_2']
+
+
+def _test_sync_point_walk_1(orig, repo):
+    testing.write_file(WALKED_FILE_1)
+
+
+def _test_sync_point_walk_2(orig, repo):
+    assert repo._currentlock(repo._lockref) is None
+    testing.wait_file(WALKED_FILE_2)
+
+
+def uisetup(ui):
+    extensions.wrapfunction(
+        streamclone, '_test_sync_point_walk_1', _test_sync_point_walk_1
+    )
+
+    extensions.wrapfunction(
+        streamclone, '_test_sync_point_walk_2', _test_sync_point_walk_2
+    )

mercurial/streamclone.py

@@ -1,735 +1,747 b''
 # streamclone.py - producing and consuming streaming repository data
 #
 # Copyright 2015 Gregory Szorc <[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 contextlib
 import os
 import struct
 
 from .i18n import _
 from .pycompat import open
 from .interfaces import repository
 from . import (
     cacheutil,
     error,
     narrowspec,
     phases,
     pycompat,
     requirements as requirementsmod,
     scmutil,
     store,
     util,
 )
 
 
 def canperformstreamclone(pullop, bundle2=False):
     """Whether it is possible to perform a streaming clone as part of pull.
 
     ``bundle2`` will cause the function to consider stream clone through
     bundle2 and only through bundle2.
 
     Returns a tuple of (supported, requirements). ``supported`` is True if
     streaming clone is supported and False otherwise. ``requirements`` is
     a set of repo requirements from the remote, or ``None`` if stream clone
     isn't supported.
     """
     repo = pullop.repo
     remote = pullop.remote
 
     bundle2supported = False
     if pullop.canusebundle2:
         if b'v2' in pullop.remotebundle2caps.get(b'stream', []):
             bundle2supported = True
         # else
         # Server doesn't support bundle2 stream clone or doesn't support
         # the versions we support. Fall back and possibly allow legacy.
 
     # Ensures legacy code path uses available bundle2.
     if bundle2supported and not bundle2:
         return False, None
     # Ensures bundle2 doesn't try to do a stream clone if it isn't supported.
     elif bundle2 and not bundle2supported:
         return False, None
 
     # Streaming clone only works on empty repositories.
     if len(repo):
         return False, None
 
     # Streaming clone only works if all data is being requested.
     if pullop.heads:
         return False, None
 
     streamrequested = pullop.streamclonerequested
 
     # If we don't have a preference, let the server decide for us. This
     # likely only comes into play in LANs.
     if streamrequested is None:
         # The server can advertise whether to prefer streaming clone.
         streamrequested = remote.capable(b'stream-preferred')
 
     if not streamrequested:
         return False, None
 
     # In order for stream clone to work, the client has to support all the
     # requirements advertised by the server.
     #
     # The server advertises its requirements via the "stream" and "streamreqs"
     # capability. "stream" (a value-less capability) is advertised if and only
     # if the only requirement is "revlogv1." Else, the "streamreqs" capability
     # is advertised and contains a comma-delimited list of requirements.
     requirements = set()
     if remote.capable(b'stream'):
         requirements.add(requirementsmod.REVLOGV1_REQUIREMENT)
     else:
         streamreqs = remote.capable(b'streamreqs')
         # This is weird and shouldn't happen with modern servers.
         if not streamreqs:
             pullop.repo.ui.warn(
                 _(
                     b'warning: stream clone requested but server has them '
                     b'disabled\n'
                 )
             )
             return False, None
 
         streamreqs = set(streamreqs.split(b','))
         # Server requires something we don't support. Bail.
         missingreqs = streamreqs - repo.supportedformats
         if missingreqs:
             pullop.repo.ui.warn(
                 _(
                     b'warning: stream clone requested but client is missing '
                     b'requirements: %s\n'
                 )
                 % b', '.join(sorted(missingreqs))
             )
             pullop.repo.ui.warn(
                 _(
                     b'(see https://www.mercurial-scm.org/wiki/MissingRequirement '
                     b'for more information)\n'
                 )
             )
             return False, None
         requirements = streamreqs
 
     return True, requirements
 
 
 def maybeperformlegacystreamclone(pullop):
     """Possibly perform a legacy stream clone operation.
 
     Legacy stream clones are performed as part of pull but before all other
     operations.
 
     A legacy stream clone will not be performed if a bundle2 stream clone is
     supported.
     """
     from . import localrepo
 
     supported, requirements = canperformstreamclone(pullop)
 
     if not supported:
         return
 
     repo = pullop.repo
     remote = pullop.remote
 
     # Save remote branchmap. We will use it later to speed up branchcache
     # creation.
     rbranchmap = None
     if remote.capable(b'branchmap'):
         with remote.commandexecutor() as e:
             rbranchmap = e.callcommand(b'branchmap', {}).result()
 
     repo.ui.status(_(b'streaming all changes\n'))
 
     with remote.commandexecutor() as e:
         fp = e.callcommand(b'stream_out', {}).result()
 
     # TODO strictly speaking, this code should all be inside the context
     # manager because the context manager is supposed to ensure all wire state
     # is flushed when exiting. But the legacy peers don't do this, so it
     # doesn't matter.
     l = fp.readline()
     try:
         resp = int(l)
     except ValueError:
         raise error.ResponseError(
             _(b'unexpected response from remote server:'), l
         )
     if resp == 1:
         raise error.Abort(_(b'operation forbidden by server'))
     elif resp == 2:
         raise error.Abort(_(b'locking the remote repository failed'))
     elif resp != 0:
         raise error.Abort(_(b'the server sent an unknown error code'))
 
     l = fp.readline()
     try:
         filecount, bytecount = map(int, l.split(b' ', 1))
     except (ValueError, TypeError):
         raise error.ResponseError(
             _(b'unexpected response from remote server:'), l
         )
 
     with repo.lock():
         consumev1(repo, fp, filecount, bytecount)
 
         # new requirements = old non-format requirements +
         #                    new format-related remote requirements
         # requirements from the streamed-in repository
         repo.requirements = requirements | (
             repo.requirements - repo.supportedformats
         )
         repo.svfs.options = localrepo.resolvestorevfsoptions(
             repo.ui, repo.requirements, repo.features
         )
         scmutil.writereporequirements(repo)
 
         if rbranchmap:
             repo._branchcaches.replace(repo, rbranchmap)
 
         repo.invalidate()
 
 
 def allowservergeneration(repo):
     """Whether streaming clones are allowed from the server."""
     if repository.REPO_FEATURE_STREAM_CLONE not in repo.features:
         return False
 
     if not repo.ui.configbool(b'server', b'uncompressed', untrusted=True):
         return False
 
     # The way stream clone works makes it impossible to hide secret changesets.
     # So don't allow this by default.
     secret = phases.hassecret(repo)
     if secret:
         return repo.ui.configbool(b'server', b'uncompressedallowsecret')
 
     return True
 
 
 # This is it's own function so extensions can override it.
 def _walkstreamfiles(repo, matcher=None):
     return repo.store.walk(matcher)
 
 
 def generatev1(repo):
     """Emit content for version 1 of a streaming clone.
 
     This returns a 3-tuple of (file count, byte size, data iterator).
 
     The data iterator consists of N entries for each file being transferred.
     Each file entry starts as a line with the file name and integer size
     delimited by a null byte.
 
     The raw file data follows. Following the raw file data is the next file
     entry, or EOF.
 
     When used on the wire protocol, an additional line indicating protocol
     success will be prepended to the stream. This function is not responsible
     for adding it.
 
     This function will obtain a repository lock to ensure a consistent view of
     the store is captured. It therefore may raise LockError.
     """
     entries = []
     total_bytes = 0
     # Get consistent snapshot of repo, lock during scan.
     with repo.lock():
         repo.ui.debug(b'scanning\n')
         for file_type, name, ename, size in _walkstreamfiles(repo):
             if size:
                 entries.append((name, size))
                 total_bytes += size
+        _test_sync_point_walk_1(repo)
+    _test_sync_point_walk_2(repo)
 
     repo.ui.debug(
         b'%d files, %d bytes to transfer\n' % (len(entries), total_bytes)
     )
 
     svfs = repo.svfs
     debugflag = repo.ui.debugflag
 
     def emitrevlogdata():
         for name, size in entries:
             if debugflag:
                 repo.ui.debug(b'sending %s (%d bytes)\n' % (name, size))
             # partially encode name over the wire for backwards compat
             yield b'%s\0%d\n' % (store.encodedir(name), size)
             # auditing at this stage is both pointless (paths are already
             # trusted by the local repo) and expensive
             with svfs(name, b'rb', auditpath=False) as fp:
                 if size <= 65536:
                     yield fp.read(size)
                 else:
                     for chunk in util.filechunkiter(fp, limit=size):
                         yield chunk
 
     return len(entries), total_bytes, emitrevlogdata()
 
 
 def generatev1wireproto(repo):
     """Emit content for version 1 of streaming clone suitable for the wire.
 
     This is the data output from ``generatev1()`` with 2 header lines. The
     first line indicates overall success. The 2nd contains the file count and
     byte size of payload.
 
     The success line contains "0" for success, "1" for stream generation not
     allowed, and "2" for error locking the repository (possibly indicating
     a permissions error for the server process).
     """
     if not allowservergeneration(repo):
         yield b'1\n'
         return
 
     try:
         filecount, bytecount, it = generatev1(repo)
     except error.LockError:
         yield b'2\n'
         return
 
     # Indicates successful response.
     yield b'0\n'
     yield b'%d %d\n' % (filecount, bytecount)
     for chunk in it:
         yield chunk
 
 
 def generatebundlev1(repo, compression=b'UN'):
     """Emit content for version 1 of a stream clone bundle.
 
     The first 4 bytes of the output ("HGS1") denote this as stream clone
     bundle version 1.
 
     The next 2 bytes indicate the compression type. Only "UN" is currently
     supported.
 
     The next 16 bytes are two 64-bit big endian unsigned integers indicating
     file count and byte count, respectively.
 
     The next 2 bytes is a 16-bit big endian unsigned short declaring the length
     of the requirements string, including a trailing \0. The following N bytes
     are the requirements string, which is ASCII containing a comma-delimited
     list of repo requirements that are needed to support the data.
 
     The remaining content is the output of ``generatev1()`` (which may be
     compressed in the future).
 
     Returns a tuple of (requirements, data generator).
     """
     if compression != b'UN':
         raise ValueError(b'we do not support the compression argument yet')
 
     requirements = repo.requirements & repo.supportedformats
     requires = b','.join(sorted(requirements))
 
     def gen():
         yield b'HGS1'
         yield compression
 
         filecount, bytecount, it = generatev1(repo)
         repo.ui.status(
             _(b'writing %d bytes for %d files\n') % (bytecount, filecount)
         )
 
         yield struct.pack(b'>QQ', filecount, bytecount)
         yield struct.pack(b'>H', len(requires) + 1)
         yield requires + b'\0'
 
         # This is where we'll add compression in the future.
         assert compression == b'UN'
 
         progress = repo.ui.makeprogress(
             _(b'bundle'), total=bytecount, unit=_(b'bytes')
         )
         progress.update(0)
 
         for chunk in it:
             progress.increment(step=len(chunk))
             yield chunk
 
         progress.complete()
 
     return requirements, gen()
 
 
 def consumev1(repo, fp, filecount, bytecount):
     """Apply the contents from version 1 of a streaming clone file handle.
 
     This takes the output from "stream_out" and applies it to the specified
     repository.
 
     Like "stream_out," the status line added by the wire protocol is not
     handled by this function.
     """
     with repo.lock():
         repo.ui.status(
             _(b'%d files to transfer, %s of data\n')
             % (filecount, util.bytecount(bytecount))
         )
         progress = repo.ui.makeprogress(
             _(b'clone'), total=bytecount, unit=_(b'bytes')
         )
         progress.update(0)
         start = util.timer()
 
         # TODO: get rid of (potential) inconsistency
         #
         # If transaction is started and any @filecache property is
         # changed at this point, it causes inconsistency between
         # in-memory cached property and streamclone-ed file on the
         # disk. Nested transaction prevents transaction scope "clone"
         # below from writing in-memory changes out at the end of it,
         # even though in-memory changes are discarded at the end of it
         # regardless of transaction nesting.
         #
         # But transaction nesting can't be simply prohibited, because
         # nesting occurs also in ordinary case (e.g. enabling
         # clonebundles).
 
         with repo.transaction(b'clone'):
             with repo.svfs.backgroundclosing(repo.ui, expectedcount=filecount):
                 for i in pycompat.xrange(filecount):
                     # XXX doesn't support '\n' or '\r' in filenames
                     l = fp.readline()
                     try:
                         name, size = l.split(b'\0', 1)
                         size = int(size)
                     except (ValueError, TypeError):
                         raise error.ResponseError(
                             _(b'unexpected response from remote server:'), l
                         )
                     if repo.ui.debugflag:
                         repo.ui.debug(
                             b'adding %s (%s)\n' % (name, util.bytecount(size))
                         )
                     # for backwards compat, name was partially encoded
                     path = store.decodedir(name)
                     with repo.svfs(path, b'w', backgroundclose=True) as ofp:
                         for chunk in util.filechunkiter(fp, limit=size):
                             progress.increment(step=len(chunk))
                             ofp.write(chunk)
 
             # force @filecache properties to be reloaded from
             # streamclone-ed file at next access
             repo.invalidate(clearfilecache=True)
 
         elapsed = util.timer() - start
         if elapsed <= 0:
             elapsed = 0.001
         progress.complete()
         repo.ui.status(
             _(b'transferred %s in %.1f seconds (%s/sec)\n')
             % (
                 util.bytecount(bytecount),
                 elapsed,
                 util.bytecount(bytecount / elapsed),
             )
         )
 
 
 def readbundle1header(fp):
     compression = fp.read(2)
     if compression != b'UN':
         raise error.Abort(
             _(
                 b'only uncompressed stream clone bundles are '
                 b'supported; got %s'
             )
             % compression
         )
 
     filecount, bytecount = struct.unpack(b'>QQ', fp.read(16))
     requireslen = struct.unpack(b'>H', fp.read(2))[0]
     requires = fp.read(requireslen)
 
     if not requires.endswith(b'\0'):
         raise error.Abort(
             _(
                 b'malformed stream clone bundle: '
                 b'requirements not properly encoded'
             )
         )
 
     requirements = set(requires.rstrip(b'\0').split(b','))
 
     return filecount, bytecount, requirements
 
 
 def applybundlev1(repo, fp):
     """Apply the content from a stream clone bundle version 1.
 
     We assume the 4 byte header has been read and validated and the file handle
     is at the 2 byte compression identifier.
     """
     if len(repo):
         raise error.Abort(
             _(b'cannot apply stream clone bundle on non-empty repo')
         )
 
     filecount, bytecount, requirements = readbundle1header(fp)
     missingreqs = requirements - repo.supportedformats
     if missingreqs:
         raise error.Abort(
             _(b'unable to apply stream clone: unsupported format: %s')
             % b', '.join(sorted(missingreqs))
         )
 
     consumev1(repo, fp, filecount, bytecount)
 
 
 class streamcloneapplier(object):
     """Class to manage applying streaming clone bundles.
 
     We need to wrap ``applybundlev1()`` in a dedicated type to enable bundle
     readers to perform bundle type-specific functionality.
     """
 
     def __init__(self, fh):
         self._fh = fh
 
     def apply(self, repo):
         return applybundlev1(repo, self._fh)
 
 
 # type of file to stream
 _fileappend = 0  # append only file
 _filefull = 1  # full snapshot file
 
 # Source of the file
 _srcstore = b's'  # store (svfs)
 _srccache = b'c'  # cache (cache)
 
 # This is it's own function so extensions can override it.
 def _walkstreamfullstorefiles(repo):
     """list snapshot file from the store"""
     fnames = []
     if not repo.publishing():
         fnames.append(b'phaseroots')
     return fnames
 
 
 def _filterfull(entry, copy, vfsmap):
     """actually copy the snapshot files"""
     src, name, ftype, data = entry
     if ftype != _filefull:
         return entry
     return (src, name, ftype, copy(vfsmap[src].join(name)))
 
 
 @contextlib.contextmanager
 def maketempcopies():
     """return a function to temporary copy file"""
     files = []
     try:
 
         def copy(src):
             fd, dst = pycompat.mkstemp()
             os.close(fd)
             files.append(dst)
             util.copyfiles(src, dst, hardlink=True)
             return dst
 
         yield copy
     finally:
         for tmp in files:
             util.tryunlink(tmp)
 
 
 def _makemap(repo):
     """make a (src -> vfs) map for the repo"""
     vfsmap = {
         _srcstore: repo.svfs,
         _srccache: repo.cachevfs,
     }
     # we keep repo.vfs out of the on purpose, ther are too many danger there
     # (eg: .hg/hgrc)
     assert repo.vfs not in vfsmap.values()
 
     return vfsmap
 
 
 def _emit2(repo, entries, totalfilesize):
     """actually emit the stream bundle"""
     vfsmap = _makemap(repo)
     progress = repo.ui.makeprogress(
         _(b'bundle'), total=totalfilesize, unit=_(b'bytes')
     )
     progress.update(0)
     with maketempcopies() as copy, progress:
         # copy is delayed until we are in the try
         entries = [_filterfull(e, copy, vfsmap) for e in entries]
         yield None  # this release the lock on the repository
         seen = 0
 
         for src, name, ftype, data in entries:
             vfs = vfsmap[src]
             yield src
             yield util.uvarintencode(len(name))
             if ftype == _fileappend:
                 fp = vfs(name)
                 size = data
             elif ftype == _filefull:
                 fp = open(data, b'rb')
                 size = util.fstat(fp).st_size
             try:
                 yield util.uvarintencode(size)
                 yield name
                 if size <= 65536:
                     chunks = (fp.read(size),)
                 else:
                     chunks = util.filechunkiter(fp, limit=size)
                 for chunk in chunks:
                     seen += len(chunk)
                     progress.update(seen)
                     yield chunk
             finally:
                 fp.close()
 
 
+def _test_sync_point_walk_1(repo):
+    """a function for synchronisation during tests"""
+
+
+def _test_sync_point_walk_2(repo):
+    """a function for synchronisation during tests"""
+
+
 def generatev2(repo, includes, excludes, includeobsmarkers):
     """Emit content for version 2 of a streaming clone.
 
     the data stream consists the following entries:
     1) A char representing the file destination (eg: store or cache)
     2) A varint containing the length of the filename
     3) A varint containing the length of file data
     4) N bytes containing the filename (the internal, store-agnostic form)
     5) N bytes containing the file data
 
     Returns a 3-tuple of (file count, file size, data iterator).
     """
 
     with repo.lock():
 
         entries = []
         totalfilesize = 0
 
         matcher = None
         if includes or excludes:
             matcher = narrowspec.match(repo.root, includes, excludes)
 
         repo.ui.debug(b'scanning\n')
         for rl_type, name, ename, size in _walkstreamfiles(repo, matcher):
             if size:
                 entries.append((_srcstore, name, _fileappend, size))
                 totalfilesize += size
         for name in _walkstreamfullstorefiles(repo):
             if repo.svfs.exists(name):
                 totalfilesize += repo.svfs.lstat(name).st_size
                 entries.append((_srcstore, name, _filefull, None))
         if includeobsmarkers and repo.svfs.exists(b'obsstore'):
             totalfilesize += repo.svfs.lstat(b'obsstore').st_size
             entries.append((_srcstore, b'obsstore', _filefull, None))
         for name in cacheutil.cachetocopy(repo):
             if repo.cachevfs.exists(name):
                 totalfilesize += repo.cachevfs.lstat(name).st_size
                 entries.append((_srccache, name, _filefull, None))
 
         chunks = _emit2(repo, entries, totalfilesize)
         first = next(chunks)
         assert first is None
+        _test_sync_point_walk_1(repo)
+    _test_sync_point_walk_2(repo)
 
     return len(entries), totalfilesize, chunks
 
 
 @contextlib.contextmanager
 def nested(*ctxs):
     this = ctxs[0]
     rest = ctxs[1:]
     with this:
         if rest:
             with nested(*rest):
                 yield
         else:
             yield
 
 
 def consumev2(repo, fp, filecount, filesize):
     """Apply the contents from a version 2 streaming clone.
 
     Data is read from an object that only needs to provide a ``read(size)``
     method.
     """
     with repo.lock():
         repo.ui.status(
             _(b'%d files to transfer, %s of data\n')
             % (filecount, util.bytecount(filesize))
         )
 
         start = util.timer()
         progress = repo.ui.makeprogress(
             _(b'clone'), total=filesize, unit=_(b'bytes')
         )
         progress.update(0)
 
         vfsmap = _makemap(repo)
 
         with repo.transaction(b'clone'):
             ctxs = (vfs.backgroundclosing(repo.ui) for vfs in vfsmap.values())
             with nested(*ctxs):
                 for i in range(filecount):
                     src = util.readexactly(fp, 1)
                     vfs = vfsmap[src]
                     namelen = util.uvarintdecodestream(fp)
                     datalen = util.uvarintdecodestream(fp)
 
                     name = util.readexactly(fp, namelen)
 
                     if repo.ui.debugflag:
                         repo.ui.debug(
                             b'adding [%s] %s (%s)\n'
                             % (src, name, util.bytecount(datalen))
                         )
 
                     with vfs(name, b'w') as ofp:
                         for chunk in util.filechunkiter(fp, limit=datalen):
                             progress.increment(step=len(chunk))
                             ofp.write(chunk)
 
             # force @filecache properties to be reloaded from
             # streamclone-ed file at next access
             repo.invalidate(clearfilecache=True)
 
         elapsed = util.timer() - start
         if elapsed <= 0:
             elapsed = 0.001
         repo.ui.status(
             _(b'transferred %s in %.1f seconds (%s/sec)\n')
             % (
                 util.bytecount(progress.pos),
                 elapsed,
                 util.bytecount(progress.pos / elapsed),
             )
         )
         progress.complete()
 
 
 def applybundlev2(repo, fp, filecount, filesize, requirements):
     from . import localrepo
 
     missingreqs = [r for r in requirements if r not in repo.supported]
     if missingreqs:
         raise error.Abort(
             _(b'unable to apply stream clone: unsupported format: %s')
             % b', '.join(sorted(missingreqs))
         )
 
     consumev2(repo, fp, filecount, filesize)
 
     # new requirements = old non-format requirements +
     #                    new format-related remote requirements
     # requirements from the streamed-in repository
     repo.requirements = set(requirements) | (
         repo.requirements - repo.supportedformats
     )
     repo.svfs.options = localrepo.resolvestorevfsoptions(
         repo.ui, repo.requirements, repo.features
     )
     scmutil.writereporequirements(repo)

tests/test-clone-uncompressed.t

@@ -1,638 +1,671 b''
 #require serve no-reposimplestore no-chg
 
 #testcases stream-legacy stream-bundle2
 
 #if stream-legacy
   $ cat << EOF >> $HGRCPATH
   > [server]
   > bundle2.stream = no
   > EOF
 #endif
 
 Initialize repository
 the status call is to check for issue5130
 
   $ hg init server
   $ cd server
   $ touch foo
   $ hg -q commit -A -m initial
   >>> for i in range(1024):
   ...     with open(str(i), 'wb') as fh:
   ...         fh.write(b"%d" % i) and None
   $ hg -q commit -A -m 'add a lot of files'
   $ hg st
   $ hg --config server.uncompressed=false serve -p $HGPORT -d --pid-file=hg.pid
   $ cat hg.pid > $DAEMON_PIDS
   $ cd ..
 
 Cannot stream clone when server.uncompressed is set
 
   $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=stream_out'
   200 Script output follows
   
   1
 
 #if stream-legacy
   $ hg debugcapabilities http://localhost:$HGPORT
   Main capabilities:
     batch
     branchmap
     $USUAL_BUNDLE2_CAPS_SERVER$
     changegroupsubset
     compression=$BUNDLE2_COMPRESSIONS$
     getbundle
     httpheader=1024
     httpmediatype=0.1rx,0.1tx,0.2tx
     known
     lookup
     pushkey
     unbundle=HG10GZ,HG10BZ,HG10UN
     unbundlehash
   Bundle2 capabilities:
     HG20
     bookmarks
     changegroup
       01
       02
     checkheads
       related
     digests
       md5
       sha1
       sha512
     error
       abort
       unsupportedcontent
       pushraced
       pushkey
     hgtagsfnodes
     listkeys
     phases
       heads
     pushkey
     remote-changegroup
       http
       https
 
   $ hg clone --stream -U http://localhost:$HGPORT server-disabled
   warning: stream clone requested but server has them disabled
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 1025 changes to 1025 files
   new changesets 96ee1d7354c4:c17445101a72
 
   $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto 0.2 --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1"
   200 Script output follows
   content-type: application/mercurial-0.2
   
 
   $ f --size body --hexdump --bytes 100
   body: size=232
   0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......|
   0010: cf 0b 45 52 52 4f 52 3a 41 42 4f 52 54 00 00 00 |..ERROR:ABORT...|
   0020: 00 01 01 07 3c 04 72 6d 65 73 73 61 67 65 73 74 |....<.rmessagest|
   0030: 72 65 61 6d 20 64 61 74 61 20 72 65 71 75 65 73 |ream data reques|
   0040: 74 65 64 20 62 75 74 20 73 65 72 76 65 72 20 64 |ted but server d|
   0050: 6f 65 73 20 6e 6f 74 20 61 6c 6c 6f 77 20 74 68 |oes not allow th|
   0060: 69 73 20 66                                     |is f|
 
 #endif
 #if stream-bundle2
   $ hg debugcapabilities http://localhost:$HGPORT
   Main capabilities:
     batch
     branchmap
     $USUAL_BUNDLE2_CAPS_SERVER$
     changegroupsubset
     compression=$BUNDLE2_COMPRESSIONS$
     getbundle
     httpheader=1024
     httpmediatype=0.1rx,0.1tx,0.2tx
     known
     lookup
     pushkey
     unbundle=HG10GZ,HG10BZ,HG10UN
     unbundlehash
   Bundle2 capabilities:
     HG20
     bookmarks
     changegroup
       01
       02
     checkheads
       related
     digests
       md5
       sha1
       sha512
     error
       abort
       unsupportedcontent
       pushraced
       pushkey
     hgtagsfnodes
     listkeys
     phases
       heads
     pushkey
     remote-changegroup
       http
       https
 
   $ hg clone --stream -U http://localhost:$HGPORT server-disabled
   warning: stream clone requested but server has them disabled
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 2 changesets with 1025 changes to 1025 files
   new changesets 96ee1d7354c4:c17445101a72
 
   $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto 0.2 --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1"
   200 Script output follows
   content-type: application/mercurial-0.2
   
 
   $ f --size body --hexdump --bytes 100
   body: size=232
   0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......|
   0010: cf 0b 45 52 52 4f 52 3a 41 42 4f 52 54 00 00 00 |..ERROR:ABORT...|
   0020: 00 01 01 07 3c 04 72 6d 65 73 73 61 67 65 73 74 |....<.rmessagest|
   0030: 72 65 61 6d 20 64 61 74 61 20 72 65 71 75 65 73 |ream data reques|
   0040: 74 65 64 20 62 75 74 20 73 65 72 76 65 72 20 64 |ted but server d|
   0050: 6f 65 73 20 6e 6f 74 20 61 6c 6c 6f 77 20 74 68 |oes not allow th|
   0060: 69 73 20 66                                     |is f|
 
 #endif
 
   $ killdaemons.py
   $ cd server
   $ hg serve -p $HGPORT -d --pid-file=hg.pid --error errors.txt
   $ cat hg.pid > $DAEMON_PIDS
   $ cd ..
 
 Basic clone
 
 #if stream-legacy
   $ hg clone --stream -U http://localhost:$HGPORT clone1
   streaming all changes
   1027 files to transfer, 96.3 KB of data (no-zstd !)
   transferred 96.3 KB in * seconds (*/sec) (glob) (no-zstd !)
   1027 files to transfer, 93.5 KB of data (zstd !)
   transferred 93.5 KB in * seconds (* */sec) (glob) (zstd !)
   searching for changes
   no changes found
   $ cat server/errors.txt
 #endif
 #if stream-bundle2
   $ hg clone --stream -U http://localhost:$HGPORT clone1
   streaming all changes
   1030 files to transfer, 96.5 KB of data (no-zstd !)
   transferred 96.5 KB in * seconds (*/sec) (glob) (no-zstd !)
   1030 files to transfer, 93.6 KB of data (zstd !)
   transferred 93.6 KB in * seconds (* */sec) (glob) (zstd !)
 
   $ ls -1 clone1/.hg/cache
   branch2-base
   branch2-immutable
   branch2-served
   branch2-served.hidden
   branch2-visible
   branch2-visible-hidden
   hgtagsfnodes1
   rbc-names-v1
   rbc-revs-v1
   tags2
   tags2-served
   $ cat server/errors.txt
 #endif
 
 getbundle requests with stream=1 are uncompressed
 
   $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto '0.1 0.2 comp=zlib,none' --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1"
   200 Script output follows
   content-type: application/mercurial-0.2
   
 
   $ f --size --hex --bytes 256 body
   body: size=112262 (no-zstd !)
   body: size=109410 (zstd no-rust !)
   body: size=109431 (rust !)
   0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......|
   0010: 7f 07 53 54 52 45 41 4d 32 00 00 00 00 03 00 09 |..STREAM2.......| (no-zstd !)
   0020: 05 09 04 0c 44 62 79 74 65 63 6f 75 6e 74 39 38 |....Dbytecount98| (no-zstd !)
   0030: 37 37 35 66 69 6c 65 63 6f 75 6e 74 31 30 33 30 |775filecount1030| (no-zstd !)
   0010: 99 07 53 54 52 45 41 4d 32 00 00 00 00 03 00 09 |..STREAM2.......| (zstd no-rust !)
   0010: ae 07 53 54 52 45 41 4d 32 00 00 00 00 03 00 09 |..STREAM2.......| (rust !)
   0020: 05 09 04 0c 5e 62 79 74 65 63 6f 75 6e 74 39 35 |....^bytecount95| (zstd no-rust !)
   0020: 05 09 04 0c 73 62 79 74 65 63 6f 75 6e 74 39 35 |....sbytecount95| (rust !)
   0030: 38 39 37 66 69 6c 65 63 6f 75 6e 74 31 30 33 30 |897filecount1030| (zstd !)
   0040: 72 65 71 75 69 72 65 6d 65 6e 74 73 64 6f 74 65 |requirementsdote|
   0050: 6e 63 6f 64 65 25 32 43 66 6e 63 61 63 68 65 25 |ncode%2Cfncache%|
   0060: 32 43 67 65 6e 65 72 61 6c 64 65 6c 74 61 25 32 |2Cgeneraldelta%2|
   0070: 43 72 65 76 6c 6f 67 76 31 25 32 43 73 70 61 72 |Crevlogv1%2Cspar| (no-zstd !)
   0080: 73 65 72 65 76 6c 6f 67 25 32 43 73 74 6f 72 65 |serevlog%2Cstore| (no-zstd !)
   0090: 00 00 80 00 73 08 42 64 61 74 61 2f 30 2e 69 00 |....s.Bdata/0.i.| (no-zstd !)
   00a0: 03 00 01 00 00 00 00 00 00 00 02 00 00 00 01 00 |................| (no-zstd !)
   00b0: 00 00 00 00 00 00 01 ff ff ff ff ff ff ff ff 80 |................| (no-zstd !)
   00c0: 29 63 a0 49 d3 23 87 bf ce fe 56 67 92 67 2c 69 |)c.I.#....Vg.g,i| (no-zstd !)
   00d0: d1 ec 39 00 00 00 00 00 00 00 00 00 00 00 00 75 |..9............u| (no-zstd !)
   00e0: 30 73 08 42 64 61 74 61 2f 31 2e 69 00 03 00 01 |0s.Bdata/1.i....| (no-zstd !)
   00f0: 00 00 00 00 00 00 00 02 00 00 00 01 00 00 00 00 |................| (no-zstd !)
   0070: 43 72 65 76 6c 6f 67 2d 63 6f 6d 70 72 65 73 73 |Crevlog-compress| (zstd no-rust !)
   0070: 43 70 65 72 73 69 73 74 65 6e 74 2d 6e 6f 64 65 |Cpersistent-node| (rust !)
   0080: 69 6f 6e 2d 7a 73 74 64 25 32 43 72 65 76 6c 6f |ion-zstd%2Crevlo| (zstd no-rust !)
   0080: 6d 61 70 25 32 43 72 65 76 6c 6f 67 2d 63 6f 6d |map%2Crevlog-com| (rust !)
   0090: 67 76 31 25 32 43 73 70 61 72 73 65 72 65 76 6c |gv1%2Csparserevl| (zstd no-rust !)
   0090: 70 72 65 73 73 69 6f 6e 2d 7a 73 74 64 25 32 43 |pression-zstd%2C| (rust !)
   00a0: 6f 67 25 32 43 73 74 6f 72 65 00 00 80 00 73 08 |og%2Cstore....s.| (zstd no-rust !)
   00a0: 72 65 76 6c 6f 67 76 31 25 32 43 73 70 61 72 73 |revlogv1%2Cspars| (rust !)
   00b0: 42 64 61 74 61 2f 30 2e 69 00 03 00 01 00 00 00 |Bdata/0.i.......| (zstd no-rust !)
   00b0: 65 72 65 76 6c 6f 67 25 32 43 73 74 6f 72 65 00 |erevlog%2Cstore.| (rust !)
   00c0: 00 00 00 00 02 00 00 00 01 00 00 00 00 00 00 00 |................| (zstd no-rust !)
   00c0: 00 80 00 73 08 42 64 61 74 61 2f 30 2e 69 00 03 |...s.Bdata/0.i..| (rust !)
   00d0: 01 ff ff ff ff ff ff ff ff 80 29 63 a0 49 d3 23 |..........)c.I.#| (zstd no-rust !)
   00d0: 00 01 00 00 00 00 00 00 00 02 00 00 00 01 00 00 |................| (rust !)
   00e0: 87 bf ce fe 56 67 92 67 2c 69 d1 ec 39 00 00 00 |....Vg.g,i..9...| (zstd no-rust !)
   00e0: 00 00 00 00 00 01 ff ff ff ff ff ff ff ff 80 29 |...............)| (rust !)
   00f0: 00 00 00 00 00 00 00 00 00 75 30 73 08 42 64 61 |.........u0s.Bda| (zstd no-rust !)
   00f0: 63 a0 49 d3 23 87 bf ce fe 56 67 92 67 2c 69 d1 |c.I.#....Vg.g,i.| (rust !)
 
 --uncompressed is an alias to --stream
 
 #if stream-legacy
   $ hg clone --uncompressed -U http://localhost:$HGPORT clone1-uncompressed
   streaming all changes
   1027 files to transfer, 96.3 KB of data (no-zstd !)
   transferred 96.3 KB in * seconds (*/sec) (glob) (no-zstd !)
   1027 files to transfer, 93.5 KB of data (zstd !)
   transferred 93.5 KB in * seconds (* */sec) (glob) (zstd !)
   searching for changes
   no changes found
 #endif
 #if stream-bundle2
   $ hg clone --uncompressed -U http://localhost:$HGPORT clone1-uncompressed
   streaming all changes
   1030 files to transfer, 96.5 KB of data (no-zstd !)
   transferred 96.5 KB in * seconds (* */sec) (glob) (no-zstd !)
   1030 files to transfer, 93.6 KB of data (zstd !)
   transferred 93.6 KB in * seconds (* */sec) (glob) (zstd !)
 #endif
 
 Clone with background file closing enabled
 
 #if stream-legacy
   $ hg --debug --config worker.backgroundclose=true --config worker.backgroundcloseminfilecount=1 clone --stream -U http://localhost:$HGPORT clone-background | grep -v adding
   using http://localhost:$HGPORT/
   sending capabilities command
   sending branchmap command
   streaming all changes
   sending stream_out command
   1027 files to transfer, 96.3 KB of data (no-zstd !)
   1027 files to transfer, 93.5 KB of data (zstd !)
   starting 4 threads for background file closing
   updating the branch cache
   transferred 96.3 KB in * seconds (*/sec) (glob) (no-zstd !)
   transferred 93.5 KB in * seconds (* */sec) (glob) (zstd !)
   query 1; heads
   sending batch command
   searching for changes
   all remote heads known locally
   no changes found
   sending getbundle command
   bundle2-input-bundle: with-transaction
   bundle2-input-part: "listkeys" (params: 1 mandatory) supported
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
   bundle2-input-bundle: 2 parts total
   checking for updated bookmarks
   updating the branch cache
   (sent 5 HTTP requests and * bytes; received * bytes in responses) (glob)
 #endif
 #if stream-bundle2
   $ hg --debug --config worker.backgroundclose=true --config worker.backgroundcloseminfilecount=1 clone --stream -U http://localhost:$HGPORT clone-background | grep -v adding
   using http://localhost:$HGPORT/
   sending capabilities command
   query 1; heads
   sending batch command
   streaming all changes
   sending getbundle command
   bundle2-input-bundle: with-transaction
   bundle2-input-part: "stream2" (params: 3 mandatory) supported
   applying stream bundle
   1030 files to transfer, 96.5 KB of data (no-zstd !)
   1030 files to transfer, 93.6 KB of data (zstd !)
   starting 4 threads for background file closing
   starting 4 threads for background file closing
   updating the branch cache
   transferred 96.5 KB in * seconds (* */sec) (glob) (no-zstd !)
   bundle2-input-part: total payload size 112094 (no-zstd !)
   transferred 93.6 KB in * seconds (* */sec) (glob) (zstd !)
   bundle2-input-part: total payload size 109216 (zstd !)
   bundle2-input-part: "listkeys" (params: 1 mandatory) supported
   bundle2-input-bundle: 2 parts total
   checking for updated bookmarks
   updating the branch cache
   (sent 3 HTTP requests and * bytes; received * bytes in responses) (glob)
 #endif
 
 Cannot stream clone when there are secret changesets
 
   $ hg -R server phase --force --secret -r tip
   $ hg clone --stream -U http://localhost:$HGPORT secret-denied
   warning: stream clone requested but server has them disabled
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   new changesets 96ee1d7354c4
 
   $ killdaemons.py
 
 Streaming of secrets can be overridden by server config
 
   $ cd server
   $ hg serve --config server.uncompressedallowsecret=true -p $HGPORT -d --pid-file=hg.pid
   $ cat hg.pid > $DAEMON_PIDS
   $ cd ..
 
 #if stream-legacy
   $ hg clone --stream -U http://localhost:$HGPORT secret-allowed
   streaming all changes
   1027 files to transfer, 96.3 KB of data (no-zstd !)
   transferred 96.3 KB in * seconds (*/sec) (glob) (no-zstd !)
   1027 files to transfer, 93.5 KB of data (zstd !)
   transferred 93.5 KB in * seconds (* */sec) (glob) (zstd !)
   searching for changes
   no changes found
 #endif
 #if stream-bundle2
   $ hg clone --stream -U http://localhost:$HGPORT secret-allowed
   streaming all changes
   1030 files to transfer, 96.5 KB of data (no-zstd !)
   transferred 96.5 KB in * seconds (* */sec) (glob) (no-zstd !)
   1030 files to transfer, 93.6 KB of data (zstd !)
   transferred 93.6 KB in * seconds (* */sec) (glob) (zstd !)
 #endif
 
   $ killdaemons.py
 
 Verify interaction between preferuncompressed and secret presence
 
   $ cd server
   $ hg serve --config server.preferuncompressed=true -p $HGPORT -d --pid-file=hg.pid
   $ cat hg.pid > $DAEMON_PIDS
   $ cd ..
 
   $ hg clone -U http://localhost:$HGPORT preferuncompressed-secret
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   new changesets 96ee1d7354c4
 
   $ killdaemons.py
 
 Clone not allowed when full bundles disabled and can't serve secrets
 
   $ cd server
   $ hg serve --config server.disablefullbundle=true -p $HGPORT -d --pid-file=hg.pid
   $ cat hg.pid > $DAEMON_PIDS
   $ cd ..
 
   $ hg clone --stream http://localhost:$HGPORT secret-full-disabled
   warning: stream clone requested but server has them disabled
   requesting all changes
   remote: abort: server has pull-based clones disabled
   abort: pull failed on remote
   (remove --pull if specified or upgrade Mercurial)
   [100]
 
 Local stream clone with secrets involved
 (This is just a test over behavior: if you have access to the repo's files,
 there is no security so it isn't important to prevent a clone here.)
 
   $ hg clone -U --stream server local-secret
   warning: stream clone requested but server has them disabled
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 1 changesets with 1 changes to 1 files
   new changesets 96ee1d7354c4
 
 Stream clone while repo is changing:
 
   $ mkdir changing
   $ cd changing
 
 extension for delaying the server process so we reliably can modify the repo
 while cloning
 
-  $ cat > delayer.py <<EOF
-  > import time
-  > from mercurial import extensions, vfs
-  > def __call__(orig, self, path, *args, **kwargs):
-  >     if path == 'data/f1.i':
-  >         time.sleep(2)
-  >     return orig(self, path, *args, **kwargs)
-  > extensions.wrapfunction(vfs.vfs, '__call__', __call__)
+  $ cat > stream_steps.py <<EOF
+  > import os
+  > import sys
+  > from mercurial import (
+  >     encoding,
+  >     extensions,
+  >     streamclone,
+  >     testing,
+  > )
+  > WALKED_FILE_1 = encoding.environ[b'HG_TEST_STREAM_WALKED_FILE_1']
+  > WALKED_FILE_2 = encoding.environ[b'HG_TEST_STREAM_WALKED_FILE_2']
+  > 
+  > def _test_sync_point_walk_1(orig, repo):
+  >     testing.write_file(WALKED_FILE_1)
+  > 
+  > def _test_sync_point_walk_2(orig, repo):
+  >     assert repo._currentlock(repo._lockref) is None
+  >     testing.wait_file(WALKED_FILE_2)
+  > 
+  > extensions.wrapfunction(
+  >     streamclone,
+  >     '_test_sync_point_walk_1',
+  >     _test_sync_point_walk_1
+  > )
+  > extensions.wrapfunction(
+  >     streamclone,
+  >     '_test_sync_point_walk_2',
+  >     _test_sync_point_walk_2
+  > )
   > EOF
 
 prepare repo with small and big file to cover both code paths in emitrevlogdata
 
   $ hg init repo
   $ touch repo/f1
   $ $TESTDIR/seq.py 50000 > repo/f2
   $ hg -R repo ci -Aqm "0"
-  $ hg serve -R repo -p $HGPORT1 -d --pid-file=hg.pid --config extensions.delayer=delayer.py
+  $ HG_TEST_STREAM_WALKED_FILE_1="$TESTTMP/sync_file_walked_1"
+  $ export HG_TEST_STREAM_WALKED_FILE_1
+  $ HG_TEST_STREAM_WALKED_FILE_2="$TESTTMP/sync_file_walked_2"
+  $ export HG_TEST_STREAM_WALKED_FILE_2
+  $ HG_TEST_STREAM_WALKED_FILE_3="$TESTTMP/sync_file_walked_3"
+  $ export HG_TEST_STREAM_WALKED_FILE_3
+#   $ cat << EOF >> $HGRCPATH
+#   > [hooks]
+#   > pre-clone=rm -f "$TESTTMP/sync_file_walked_*"
+#   > EOF
+  $ hg serve -R repo -p $HGPORT1 -d --error errors.log --pid-file=hg.pid --config extensions.stream_steps="$RUNTESTDIR/testlib/ext-stream-clone-steps.py"
   $ cat hg.pid >> $DAEMON_PIDS
 
 clone while modifying the repo between stating file with write lock and
 actually serving file content
 
-  $ hg clone -q --stream -U http://localhost:$HGPORT1 clone &
-  $ sleep 1
+  $ (hg clone -q --stream -U http://localhost:$HGPORT1 clone; touch "$HG_TEST_STREAM_WALKED_FILE_3") &
+  $ $RUNTESTDIR/testlib/wait-on-file 10 $HG_TEST_STREAM_WALKED_FILE_1
   $ echo >> repo/f1
   $ echo >> repo/f2
   $ hg -R repo ci -m "1" --config ui.timeout.warn=-1
-  $ wait
+  $ touch $HG_TEST_STREAM_WALKED_FILE_2
+  $ $RUNTESTDIR/testlib/wait-on-file 10 $HG_TEST_STREAM_WALKED_FILE_3
   $ hg -R clone id
   000000000000
+  $ cat errors.log
   $ cd ..
 
 Stream repository with bookmarks
 --------------------------------
 
 (revert introduction of secret changeset)
 
   $ hg -R server phase --draft 'secret()'
 
 add a bookmark
 
   $ hg -R server bookmark -r tip some-bookmark
 
 clone it
 
 #if stream-legacy
   $ hg clone --stream http://localhost:$HGPORT with-bookmarks
   streaming all changes
   1027 files to transfer, 96.3 KB of data (no-zstd !)
   transferred 96.3 KB in * seconds (*) (glob) (no-zstd !)
   1027 files to transfer, 93.5 KB of data (zstd !)
   transferred 93.5 KB in * seconds (* */sec) (glob) (zstd !)
   searching for changes
   no changes found
   updating to branch default
   1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
 #endif
 #if stream-bundle2
   $ hg clone --stream http://localhost:$HGPORT with-bookmarks
   streaming all changes
   1033 files to transfer, 96.6 KB of data (no-zstd !)
   transferred 96.6 KB in * seconds (* */sec) (glob) (no-zstd !)
   1033 files to transfer, 93.8 KB of data (zstd !)
   transferred 93.8 KB in * seconds (* */sec) (glob) (zstd !)
   updating to branch default
   1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
 #endif
   $ hg -R with-bookmarks bookmarks
      some-bookmark             1:c17445101a72
 
 Stream repository with phases
 -----------------------------
 
 Clone as publishing
 
   $ hg -R server phase -r 'all()'
   0: draft
   1: draft
 
 #if stream-legacy
   $ hg clone --stream http://localhost:$HGPORT phase-publish
   streaming all changes
   1027 files to transfer, 96.3 KB of data (no-zstd !)
   transferred 96.3 KB in * seconds (*) (glob) (no-zstd !)
   1027 files to transfer, 93.5 KB of data (zstd !)
   transferred 93.5 KB in * seconds (* */sec) (glob) (zstd !)
   searching for changes
   no changes found
   updating to branch default
   1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
 #endif
 #if stream-bundle2
   $ hg clone --stream http://localhost:$HGPORT phase-publish
   streaming all changes
   1033 files to transfer, 96.6 KB of data (no-zstd !)
   transferred 96.6 KB in * seconds (* */sec) (glob) (no-zstd !)
   1033 files to transfer, 93.8 KB of data (zstd !)
   transferred 93.8 KB in * seconds (* */sec) (glob) (zstd !)
   updating to branch default
   1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
 #endif
   $ hg -R phase-publish phase -r 'all()'
   0: public
   1: public
 
 Clone as non publishing
 
   $ cat << EOF >> server/.hg/hgrc
   > [phases]
   > publish = False
   > EOF
   $ killdaemons.py
   $ hg -R server serve -p $HGPORT -d --pid-file=hg.pid
   $ cat hg.pid > $DAEMON_PIDS
 
 #if stream-legacy
 
 With v1 of the stream protocol, changeset are always cloned as public. It make
 stream v1 unsuitable for non-publishing repository.
 
   $ hg clone --stream http://localhost:$HGPORT phase-no-publish
   streaming all changes
   1027 files to transfer, 96.3 KB of data (no-zstd !)
   transferred 96.3 KB in * seconds (* */sec) (glob) (no-zstd !)
   1027 files to transfer, 93.5 KB of data (zstd !)
   transferred 93.5 KB in * seconds (* */sec) (glob) (zstd !)
   searching for changes
   no changes found
   updating to branch default
   1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R phase-no-publish phase -r 'all()'
   0: public
   1: public
 #endif
 #if stream-bundle2
   $ hg clone --stream http://localhost:$HGPORT phase-no-publish
   streaming all changes
   1034 files to transfer, 96.7 KB of data (no-zstd !)
   transferred 96.7 KB in * seconds (* */sec) (glob) (no-zstd !)
   1034 files to transfer, 93.9 KB of data (zstd !)
   transferred 93.9 KB in * seconds (* */sec) (glob) (zstd !)
   updating to branch default
   1025 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg -R phase-no-publish phase -r 'all()'
   0: draft
   1: draft
 #endif
 
   $ killdaemons.py
 
 #if stream-legacy
 
 With v1 of the stream protocol, changeset are always cloned as public. There's
 no obsolescence markers exchange in stream v1.
 
 #endif
 #if stream-bundle2
 
 Stream repository with obsolescence
 -----------------------------------
 
 Clone non-publishing with obsolescence
 
   $ cat >> $HGRCPATH << EOF
   > [experimental]
   > evolution=all
   > EOF
 
   $ cd server
   $ echo foo > foo
   $ hg -q commit -m 'about to be pruned'
   $ hg debugobsolete `hg log -r . -T '{node}'` -d '0 0' -u test --record-parents
   1 new obsolescence markers
   obsoleted 1 changesets
   $ hg up null -q
   $ hg log -T '{rev}: {phase}\n'
   1: draft
   0: draft
   $ hg serve -p $HGPORT -d --pid-file=hg.pid
   $ cat hg.pid > $DAEMON_PIDS
   $ cd ..
 
   $ hg clone -U --stream http://localhost:$HGPORT with-obsolescence
   streaming all changes
   1035 files to transfer, 97.1 KB of data (no-zstd !)
   transferred 97.1 KB in * seconds (* */sec) (glob) (no-zstd !)
   1035 files to transfer, 94.3 KB of data (zstd !)
   transferred 94.3 KB in * seconds (* */sec) (glob) (zstd !)
   $ hg -R with-obsolescence log -T '{rev}: {phase}\n'
   1: draft
   0: draft
   $ hg debugobsolete -R with-obsolescence
   50382b884f66690b7045cac93a540cba4d4c906f 0 {c17445101a72edac06facd130d14808dfbd5c7c2} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
 
   $ hg clone -U --stream --config experimental.evolution=0 http://localhost:$HGPORT with-obsolescence-no-evolution
   streaming all changes
   remote: abort: server has obsolescence markers, but client cannot receive them via stream clone
   abort: pull failed on remote
   [100]
 
   $ killdaemons.py
 
 #endif