|
|
# changegroup.py - Mercurial changegroup manipulation functions
|
|
|
#
|
|
|
# Copyright 2006 Matt Mackall <mpm@selenic.com>
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
|
|
import weakref
|
|
|
from i18n import _
|
|
|
from node import nullrev, nullid, hex, short
|
|
|
import mdiff, util, dagutil
|
|
|
import struct, os, bz2, zlib, tempfile
|
|
|
import discovery, error, phases, branchmap
|
|
|
|
|
|
_CHANGEGROUPV1_DELTA_HEADER = "20s20s20s20s"
|
|
|
_CHANGEGROUPV2_DELTA_HEADER = "20s20s20s20s20s"
|
|
|
|
|
|
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 util.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 util.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)
|
|
|
|
|
|
class nocompress(object):
|
|
|
def compress(self, x):
|
|
|
return x
|
|
|
def flush(self):
|
|
|
return ""
|
|
|
|
|
|
bundletypes = {
|
|
|
"": ("", nocompress), # only when using unbundle on ssh and old http servers
|
|
|
# since the unification ssh accepts a header but there
|
|
|
# is no capability signaling it.
|
|
|
"HG10UN": ("HG10UN", nocompress),
|
|
|
"HG10BZ": ("HG10", lambda: bz2.BZ2Compressor()),
|
|
|
"HG10GZ": ("HG10GZ", lambda: zlib.compressobj()),
|
|
|
}
|
|
|
|
|
|
# hgweb uses this list to communicate its preferred type
|
|
|
bundlepriority = ['HG10GZ', 'HG10BZ', 'HG10UN']
|
|
|
|
|
|
def writebundle(cg, filename, bundletype, vfs=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.
|
|
|
"""
|
|
|
|
|
|
fh = None
|
|
|
cleanup = None
|
|
|
try:
|
|
|
if filename:
|
|
|
if vfs:
|
|
|
fh = vfs.open(filename, "wb")
|
|
|
else:
|
|
|
fh = open(filename, "wb")
|
|
|
else:
|
|
|
fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg")
|
|
|
fh = os.fdopen(fd, "wb")
|
|
|
cleanup = filename
|
|
|
|
|
|
header, compressor = bundletypes[bundletype]
|
|
|
fh.write(header)
|
|
|
z = compressor()
|
|
|
|
|
|
# parse the changegroup data, otherwise we will block
|
|
|
# in case of sshrepo because we don't know the end of the stream
|
|
|
|
|
|
# an empty chunkgroup is the end of the changegroup
|
|
|
# a changegroup has at least 2 chunkgroups (changelog and manifest).
|
|
|
# after that, an empty chunkgroup is the end of the changegroup
|
|
|
for chunk in cg.getchunks():
|
|
|
fh.write(z.compress(chunk))
|
|
|
fh.write(z.flush())
|
|
|
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)
|
|
|
|
|
|
def decompressor(fh, alg):
|
|
|
if alg == 'UN':
|
|
|
return fh
|
|
|
elif alg == 'GZ':
|
|
|
def generator(f):
|
|
|
zd = zlib.decompressobj()
|
|
|
for chunk in util.filechunkiter(f):
|
|
|
yield zd.decompress(chunk)
|
|
|
elif alg == 'BZ':
|
|
|
def generator(f):
|
|
|
zd = bz2.BZ2Decompressor()
|
|
|
zd.decompress("BZ")
|
|
|
for chunk in util.filechunkiter(f, 4096):
|
|
|
yield zd.decompress(chunk)
|
|
|
else:
|
|
|
raise util.Abort("unknown bundle compression '%s'" % alg)
|
|
|
return util.chunkbuffer(generator(fh))
|
|
|
|
|
|
class cg1unpacker(object):
|
|
|
deltaheader = _CHANGEGROUPV1_DELTA_HEADER
|
|
|
deltaheadersize = struct.calcsize(deltaheader)
|
|
|
def __init__(self, fh, alg):
|
|
|
self._stream = decompressor(fh, alg)
|
|
|
self._type = alg
|
|
|
self.callback = None
|
|
|
def compressed(self):
|
|
|
return 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 util.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
|
|
|
return node, p1, p2, deltabase, cs
|
|
|
|
|
|
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 = self._deltaheader(header, prevnode)
|
|
|
return {'node': node, 'p1': p1, 'p2': p2, 'cs': cs,
|
|
|
'deltabase': deltabase, 'delta': delta}
|
|
|
|
|
|
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.
|
|
|
"""
|
|
|
# an empty chunkgroup is the end of the changegroup
|
|
|
# a changegroup has at least 2 chunkgroups (changelog and manifest).
|
|
|
# after that, an empty chunkgroup is the end of the changegroup
|
|
|
empty = False
|
|
|
count = 0
|
|
|
while not empty or count <= 2:
|
|
|
empty = True
|
|
|
count += 1
|
|
|
while True:
|
|
|
chunk = getchunk(self)
|
|
|
if not chunk:
|
|
|
break
|
|
|
empty = False
|
|
|
yield chunkheader(len(chunk))
|
|
|
pos = 0
|
|
|
while pos < len(chunk):
|
|
|
next = pos + 2**20
|
|
|
yield chunk[pos:next]
|
|
|
pos = next
|
|
|
yield closechunk()
|
|
|
|
|
|
class cg2unpacker(cg1unpacker):
|
|
|
deltaheader = _CHANGEGROUPV2_DELTA_HEADER
|
|
|
deltaheadersize = struct.calcsize(deltaheader)
|
|
|
|
|
|
def _deltaheader(self, headertuple, prevnode):
|
|
|
node, p1, p2, deltabase, cs = headertuple
|
|
|
return node, p1, p2, deltabase, cs
|
|
|
|
|
|
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
|
|
|
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.
|
|
|
"""
|
|
|
# Set of capabilities we can use to build the bundle.
|
|
|
if bundlecaps is None:
|
|
|
bundlecaps = set()
|
|
|
self._bundlecaps = bundlecaps
|
|
|
self._changelog = repo.changelog
|
|
|
self._manifest = repo.manifest
|
|
|
reorder = repo.ui.config('bundle', 'reorder', 'auto')
|
|
|
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
|
|
|
|
|
|
def group(self, nodelist, revlog, lookup, units=None, reorder=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
|
|
|
|
|
|
# for generaldelta revlogs, we linearize the revs; this will both be
|
|
|
# much quicker and generate a much smaller bundle
|
|
|
if (revlog._generaldelta and reorder is not False) or reorder:
|
|
|
dag = dagutil.revlogdag(revlog)
|
|
|
revs = set(revlog.rev(n) for n in nodelist)
|
|
|
revs = dag.linearize(revs)
|
|
|
else:
|
|
|
revs = sorted([revlog.rev(n) for n in nodelist])
|
|
|
|
|
|
# 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
|
|
|
|
|
|
yield self.close()
|
|
|
|
|
|
# filter any nodes that claim to be part of the known set
|
|
|
def prune(self, revlog, missing, commonrevs, source):
|
|
|
rr, rl = revlog.rev, revlog.linkrev
|
|
|
return [n for n in missing if rl(rr(n)) not in commonrevs]
|
|
|
|
|
|
def generate(self, commonrevs, clnodes, fastpathlinkrev, source):
|
|
|
'''yield a sequence of changegroup chunks (strings)'''
|
|
|
repo = self._repo
|
|
|
cl = self._changelog
|
|
|
mf = self._manifest
|
|
|
reorder = self._reorder
|
|
|
progress = self._progress
|
|
|
|
|
|
# for progress output
|
|
|
msgbundling = _('bundling')
|
|
|
|
|
|
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)
|
|
|
changedfiles.update(c[3])
|
|
|
# record the first changeset introducing this manifest version
|
|
|
mfs.setdefault(c[0], x)
|
|
|
return x
|
|
|
|
|
|
self._verbosenote(_('uncompressed size of bundle content:\n'))
|
|
|
size = 0
|
|
|
for chunk in self.group(clnodes, cl, lookupcl, units=_('changesets'),
|
|
|
reorder=reorder):
|
|
|
size += len(chunk)
|
|
|
yield chunk
|
|
|
self._verbosenote(_('%8.i (changelog)\n') % size)
|
|
|
progress(msgbundling, None)
|
|
|
|
|
|
# Callback for the manifest, used to collect linkrevs for filelog
|
|
|
# revisions.
|
|
|
# Returns the linkrev node (collected in lookupcl).
|
|
|
def lookupmf(x):
|
|
|
clnode = mfs[x]
|
|
|
if not fastpathlinkrev or reorder:
|
|
|
mdata = mf.readfast(x)
|
|
|
for f, n in mdata.iteritems():
|
|
|
if f in changedfiles:
|
|
|
# record the first changeset introducing this filelog
|
|
|
# version
|
|
|
fclnodes = fnodes.setdefault(f, {})
|
|
|
fclnode = fclnodes.setdefault(n, clnode)
|
|
|
if clrevorder[clnode] < clrevorder[fclnode]:
|
|
|
fclnodes[n] = clnode
|
|
|
return clnode
|
|
|
|
|
|
mfnodes = self.prune(mf, mfs, commonrevs, source)
|
|
|
size = 0
|
|
|
for chunk in self.group(mfnodes, mf, lookupmf, units=_('manifests'),
|
|
|
reorder=reorder):
|
|
|
size += len(chunk)
|
|
|
yield chunk
|
|
|
self._verbosenote(_('%8.i (manifests)\n') % size)
|
|
|
progress(msgbundling, None)
|
|
|
|
|
|
mfs.clear()
|
|
|
needed = set(cl.rev(x) for x in clnodes)
|
|
|
|
|
|
def linknodes(filerevlog, fname):
|
|
|
if fastpathlinkrev and not reorder:
|
|
|
llr = filerevlog.linkrev
|
|
|
def genfilenodes():
|
|
|
for r in filerevlog:
|
|
|
linkrev = llr(r)
|
|
|
if linkrev in needed:
|
|
|
yield filerevlog.node(r), cl.node(linkrev)
|
|
|
return dict(genfilenodes())
|
|
|
return fnodes.get(fname, {})
|
|
|
|
|
|
for chunk in self.generatefiles(changedfiles, linknodes, commonrevs,
|
|
|
source):
|
|
|
yield chunk
|
|
|
|
|
|
yield self.close()
|
|
|
progress(msgbundling, None)
|
|
|
|
|
|
if clnodes:
|
|
|
repo.hook('outgoing', node=hex(clnodes[0]), source=source)
|
|
|
|
|
|
def generatefiles(self, changedfiles, linknodes, commonrevs, source):
|
|
|
repo = self._repo
|
|
|
progress = self._progress
|
|
|
reorder = self._reorder
|
|
|
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 util.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, source)
|
|
|
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,
|
|
|
reorder=reorder):
|
|
|
size += len(chunk)
|
|
|
yield chunk
|
|
|
self._verbosenote(_('%8.i %s\n') % (size, fname))
|
|
|
|
|
|
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 base == nullrev:
|
|
|
delta = revlog.revision(node)
|
|
|
prefix = mdiff.trivialdiffheader(len(delta))
|
|
|
else:
|
|
|
delta = revlog.revdiff(base, rev)
|
|
|
p1n, p2n = revlog.parents(node)
|
|
|
basenode = revlog.node(base)
|
|
|
meta = self.builddeltaheader(node, p1n, p2n, basenode, linknode)
|
|
|
meta += prefix
|
|
|
l = len(meta) + len(delta)
|
|
|
yield chunkheader(l)
|
|
|
yield meta
|
|
|
yield delta
|
|
|
def builddeltaheader(self, node, p1n, p2n, basenode, linknode):
|
|
|
# do nothing with basenode, it is implicitly the previous one in HG10
|
|
|
return struct.pack(self.deltaheader, node, p1n, p2n, linknode)
|
|
|
|
|
|
class cg2packer(cg1packer):
|
|
|
|
|
|
deltaheader = _CHANGEGROUPV2_DELTA_HEADER
|
|
|
|
|
|
def group(self, nodelist, revlog, lookup, units=None, reorder=None):
|
|
|
if (revlog._generaldelta and reorder is not True):
|
|
|
reorder = False
|
|
|
return super(cg2packer, self).group(nodelist, revlog, lookup,
|
|
|
units=units, reorder=reorder)
|
|
|
|
|
|
def deltaparent(self, revlog, rev, p1, p2, prev):
|
|
|
dp = revlog.deltaparent(rev)
|
|
|
# avoid storing full revisions; pick prev in those cases
|
|
|
# also pick prev when we can't be sure remote has dp
|
|
|
if dp == nullrev or (dp != p1 and dp != p2 and dp != prev):
|
|
|
return prev
|
|
|
return dp
|
|
|
|
|
|
def builddeltaheader(self, node, p1n, p2n, basenode, linknode):
|
|
|
return struct.pack(self.deltaheader, node, p1n, p2n, basenode, linknode)
|
|
|
|
|
|
packermap = {'01': (cg1packer, cg1unpacker),
|
|
|
'02': (cg2packer, cg2unpacker)}
|
|
|
|
|
|
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 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 getsubset(repo, outgoing, bundler, source, fastpath=False):
|
|
|
gengroup = getsubsetraw(repo, outgoing, bundler, source, fastpath)
|
|
|
return cg1unpacker(util.chunkbuffer(gengroup), 'UN')
|
|
|
|
|
|
def changegroupsubset(repo, roots, heads, source):
|
|
|
"""Compute a changegroup consisting of all the nodes that are
|
|
|
descendants of any of the roots and ancestors of any of the heads.
|
|
|
Return a chunkbuffer object whose read() method will return
|
|
|
successive changegroup chunks.
|
|
|
|
|
|
It is fairly complex as determining which filenodes and which
|
|
|
manifest nodes need to be included for the changeset to be complete
|
|
|
is non-trivial.
|
|
|
|
|
|
Another wrinkle is doing the reverse, figuring out which changeset in
|
|
|
the changegroup a particular filenode or manifestnode belongs to.
|
|
|
"""
|
|
|
cl = repo.changelog
|
|
|
if not roots:
|
|
|
roots = [nullid]
|
|
|
# TODO: remove call to nodesbetween.
|
|
|
csets, roots, heads = cl.nodesbetween(roots, heads)
|
|
|
discbases = []
|
|
|
for n in roots:
|
|
|
discbases.extend([p for p in cl.parents(n) if p != nullid])
|
|
|
outgoing = discovery.outgoing(cl, discbases, heads)
|
|
|
bundler = cg1packer(repo)
|
|
|
return getsubset(repo, outgoing, bundler, source)
|
|
|
|
|
|
def getlocalchangegroupraw(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. Returns a raw changegroup generator."""
|
|
|
if not outgoing.missing:
|
|
|
return None
|
|
|
bundler = packermap[version][0](repo, bundlecaps)
|
|
|
return getsubsetraw(repo, outgoing, bundler, source)
|
|
|
|
|
|
def getlocalchangegroup(repo, source, outgoing, bundlecaps=None):
|
|
|
"""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
|
|
|
bundler = cg1packer(repo, bundlecaps)
|
|
|
return getsubset(repo, outgoing, bundler, source)
|
|
|
|
|
|
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(cl, common, heads)
|
|
|
|
|
|
def getchangegroupraw(repo, source, heads=None, common=None, bundlecaps=None,
|
|
|
version='01'):
|
|
|
"""Like changegroupsubset, but returns the set difference between the
|
|
|
ancestors of heads and the ancestors common.
|
|
|
|
|
|
If heads is None, use the local heads. If common is None, use [nullid].
|
|
|
|
|
|
If version is None, use a version '1' changegroup.
|
|
|
|
|
|
The nodes in common might not all be known locally due to the way the
|
|
|
current discovery protocol works. Returns a raw changegroup generator.
|
|
|
"""
|
|
|
outgoing = _computeoutgoing(repo, heads, common)
|
|
|
return getlocalchangegroupraw(repo, source, outgoing, bundlecaps=bundlecaps,
|
|
|
version=version)
|
|
|
|
|
|
def getchangegroup(repo, source, heads=None, common=None, bundlecaps=None):
|
|
|
"""Like changegroupsubset, but returns the set difference between the
|
|
|
ancestors of heads and the ancestors common.
|
|
|
|
|
|
If heads is None, use the local heads. If common is None, use [nullid].
|
|
|
|
|
|
The nodes in common might not all be known locally due to the way the
|
|
|
current discovery protocol works.
|
|
|
"""
|
|
|
outgoing = _computeoutgoing(repo, heads, common)
|
|
|
return getlocalchangegroup(repo, source, outgoing, bundlecaps=bundlecaps)
|
|
|
|
|
|
def changegroup(repo, basenodes, source):
|
|
|
# to avoid a race we use changegroupsubset() (issue1320)
|
|
|
return changegroupsubset(repo, basenodes, repo.heads(), source)
|
|
|
|
|
|
def addchangegroupfiles(repo, source, revmap, trp, pr, needfiles):
|
|
|
revisions = 0
|
|
|
files = 0
|
|
|
while True:
|
|
|
chunkdata = source.filelogheader()
|
|
|
if not chunkdata:
|
|
|
break
|
|
|
f = chunkdata["filename"]
|
|
|
repo.ui.debug("adding %s revisions\n" % f)
|
|
|
pr()
|
|
|
fl = repo.file(f)
|
|
|
o = len(fl)
|
|
|
if not fl.addgroup(source, revmap, trp):
|
|
|
raise util.Abort(_("received file revlog group is empty"))
|
|
|
revisions += len(fl) - o
|
|
|
files += 1
|
|
|
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 util.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 util.Abort(
|
|
|
_('missing file data for %s:%s - run hg verify') %
|
|
|
(f, hex(n)))
|
|
|
|
|
|
return revisions, files
|
|
|
|
|
|
def addchangegroup(repo, source, srctype, url, emptyok=False,
|
|
|
targetphase=phases.draft):
|
|
|
"""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)
|
|
|
|
|
|
if not source:
|
|
|
return 0
|
|
|
|
|
|
changesets = files = revisions = 0
|
|
|
efiles = set()
|
|
|
|
|
|
tr = repo.transaction("\n".join([srctype, util.hidepassword(url)]))
|
|
|
# The transaction could have been created before and already carries 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)
|
|
|
|
|
|
# write changelog data to temp files so concurrent readers will not see
|
|
|
# inconsistent view
|
|
|
cl = repo.changelog
|
|
|
cl.delayupdate(tr)
|
|
|
oldheads = cl.heads()
|
|
|
try:
|
|
|
repo.hook('prechangegroup', throw=True, **tr.hookargs)
|
|
|
|
|
|
trp = weakref.proxy(tr)
|
|
|
# pull off the changeset group
|
|
|
repo.ui.status(_("adding changesets\n"))
|
|
|
clstart = len(cl)
|
|
|
class prog(object):
|
|
|
step = _('changesets')
|
|
|
count = 1
|
|
|
ui = repo.ui
|
|
|
total = None
|
|
|
def __call__(repo):
|
|
|
repo.ui.progress(repo.step, repo.count, unit=_('chunks'),
|
|
|
total=repo.total)
|
|
|
repo.count += 1
|
|
|
pr = prog()
|
|
|
source.callback = pr
|
|
|
|
|
|
source.changelogheader()
|
|
|
srccontent = cl.addgroup(source, csmap, trp)
|
|
|
if not (srccontent or emptyok):
|
|
|
raise util.Abort(_("received changelog group is empty"))
|
|
|
clend = len(cl)
|
|
|
changesets = clend - clstart
|
|
|
for c in xrange(clstart, clend):
|
|
|
efiles.update(repo[c].files())
|
|
|
efiles = len(efiles)
|
|
|
repo.ui.progress(_('changesets'), None)
|
|
|
|
|
|
# pull off the manifest group
|
|
|
repo.ui.status(_("adding manifests\n"))
|
|
|
pr.step = _('manifests')
|
|
|
pr.count = 1
|
|
|
pr.total = changesets # manifests <= changesets
|
|
|
# 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
|
|
|
source.manifestheader()
|
|
|
repo.manifest.addgroup(source, revmap, trp)
|
|
|
repo.ui.progress(_('manifests'), None)
|
|
|
|
|
|
needfiles = {}
|
|
|
if repo.ui.configbool('server', 'validate', default=False):
|
|
|
# validate incoming csets have their manifests
|
|
|
for cset in xrange(clstart, clend):
|
|
|
mfest = repo.changelog.read(repo.changelog.node(cset))[0]
|
|
|
mfest = repo.manifest.readdelta(mfest)
|
|
|
# store file nodes 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"))
|
|
|
pr.step = _('files')
|
|
|
pr.count = 1
|
|
|
pr.total = efiles
|
|
|
source.callback = None
|
|
|
|
|
|
newrevs, newfiles = addchangegroupfiles(repo, source, revmap, trp, pr,
|
|
|
needfiles)
|
|
|
revisions += newrevs
|
|
|
files += newfiles
|
|
|
|
|
|
dh = 0
|
|
|
if oldheads:
|
|
|
heads = cl.heads()
|
|
|
dh = len(heads) - len(oldheads)
|
|
|
for h in heads:
|
|
|
if h not in oldheads and repo[h].closesbranch():
|
|
|
dh -= 1
|
|
|
htext = ""
|
|
|
if dh:
|
|
|
htext = _(" (%+d heads)") % dh
|
|
|
|
|
|
repo.ui.status(_("added %d changesets"
|
|
|
" with %d changes to %d files%s\n")
|
|
|
% (changesets, revisions, files, htext))
|
|
|
repo.invalidatevolatilesets()
|
|
|
|
|
|
if changesets > 0:
|
|
|
p = lambda: tr.writepending() and repo.root or ""
|
|
|
if 'node' not in tr.hookargs:
|
|
|
tr.hookargs['node'] = hex(cl.node(clstart))
|
|
|
hookargs = dict(tr.hookargs)
|
|
|
else:
|
|
|
hookargs = dict(tr.hookargs)
|
|
|
hookargs['node'] = hex(cl.node(clstart))
|
|
|
repo.hook('pretxnchangegroup', throw=True, pending=p, **hookargs)
|
|
|
|
|
|
added = [cl.node(r) for r in xrange(clstart, clend)]
|
|
|
publishing = repo.ui.configbool('phases', 'publish', True)
|
|
|
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 publishing:
|
|
|
phases.advanceboundary(repo, tr, phases.public, srccontent)
|
|
|
else:
|
|
|
# Those changesets have been pushed from the outside, their
|
|
|
# phases are going to be pushed alongside. Therefor
|
|
|
# `targetphase` is ignored.
|
|
|
phases.advanceboundary(repo, tr, phases.draft, srccontent)
|
|
|
phases.retractboundary(repo, tr, phases.draft, added)
|
|
|
elif srctype != 'strip':
|
|
|
# publishing only alter behavior during push
|
|
|
#
|
|
|
# strip should not touch boundary at all
|
|
|
phases.retractboundary(repo, tr, targetphase, added)
|
|
|
|
|
|
if changesets > 0:
|
|
|
if srctype != 'strip':
|
|
|
# During strip, branchcache is invalid but coming call to
|
|
|
# `destroyed` will repair it.
|
|
|
# In other case we can safely update cache on disk.
|
|
|
branchmap.updatecache(repo.filtered('served'))
|
|
|
|
|
|
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
|
|
|
|
|
|
# forcefully update the on-disk branch cache
|
|
|
repo.ui.debug("updating the branch cache\n")
|
|
|
repo.hook("changegroup", **hookargs)
|
|
|
|
|
|
for n in added:
|
|
|
args = hookargs.copy()
|
|
|
args['node'] = hex(n)
|
|
|
repo.hook("incoming", **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))
|
|
|
|
|
|
tr.close()
|
|
|
|
|
|
finally:
|
|
|
tr.release()
|
|
|
# never return 0 here:
|
|
|
if dh < 0:
|
|
|
return dh - 1
|
|
|
else:
|
|
|
return dh + 1
|
|
|
|
