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# exchange.py - utility to exchange data between repos.
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#
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from i18n import _
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from node import hex, nullid
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import errno
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import util, scmutil, changegroup, base85
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import discovery, phases, obsolete, bookmarks, bundle2
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def readbundle(fh, fname, vfs=None):
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header = changegroup.readexactly(fh, 6)
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if not fname:
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fname = "stream"
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if not header.startswith('HG') and header.startswith('\0'):
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fh = changegroup.headerlessfixup(fh, header)
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header = "HG10UN"
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elif vfs:
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fname = vfs.join(fname)
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magic, version, alg = header[0:2], header[2:4], header[4:6]
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if magic != 'HG':
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raise util.Abort(_('%s: not a Mercurial bundle') % fname)
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if version != '10':
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raise util.Abort(_('%s: unknown bundle version %s') % (fname, version))
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return changegroup.unbundle10(fh, alg)
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class pushoperation(object):
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"""A object that represent a single push operation
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It purpose is to carry push related state and very common operation.
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A new should be created at the beginning of each push and discarded
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afterward.
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"""
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def __init__(self, repo, remote, force=False, revs=None, newbranch=False):
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# repo we push from
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self.repo = repo
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self.ui = repo.ui
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# repo we push to
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self.remote = remote
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# force option provided
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self.force = force
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# revs to be pushed (None is "all")
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self.revs = revs
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# allow push of new branch
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self.newbranch = newbranch
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# did a local lock get acquired?
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self.locallocked = None
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# Integer version of the push result
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# - None means nothing to push
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# - 0 means HTTP error
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# - 1 means we pushed and remote head count is unchanged *or*
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# we have outgoing changesets but refused to push
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# - other values as described by addchangegroup()
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self.ret = None
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# discover.outgoing object (contains common and outgoing data)
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self.outgoing = None
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# all remote heads before the push
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self.remoteheads = None
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# testable as a boolean indicating if any nodes are missing locally.
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self.incoming = None
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# set of all heads common after changeset bundle push
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self.commonheads = None
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def push(repo, remote, force=False, revs=None, newbranch=False):
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'''Push outgoing changesets (limited by revs) from a local
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repository to remote. Return an integer:
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- None means nothing to push
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- 0 means HTTP error
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- 1 means we pushed and remote head count is unchanged *or*
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we have outgoing changesets but refused to push
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- other values as described by addchangegroup()
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'''
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pushop = pushoperation(repo, remote, force, revs, newbranch)
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if pushop.remote.local():
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missing = (set(pushop.repo.requirements)
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- pushop.remote.local().supported)
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if missing:
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msg = _("required features are not"
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" supported in the destination:"
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" %s") % (', '.join(sorted(missing)))
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raise util.Abort(msg)
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# there are two ways to push to remote repo:
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#
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# addchangegroup assumes local user can lock remote
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# repo (local filesystem, old ssh servers).
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#
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# unbundle assumes local user cannot lock remote repo (new ssh
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# servers, http servers).
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if not pushop.remote.canpush():
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raise util.Abort(_("destination does not support push"))
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# get local lock as we might write phase data
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locallock = None
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try:
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locallock = pushop.repo.lock()
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pushop.locallocked = True
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except IOError, err:
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pushop.locallocked = False
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if err.errno != errno.EACCES:
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raise
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# source repo cannot be locked.
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# We do not abort the push, but just disable the local phase
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# synchronisation.
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msg = 'cannot lock source repository: %s\n' % err
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pushop.ui.debug(msg)
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try:
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pushop.repo.checkpush(pushop)
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lock = None
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unbundle = pushop.remote.capable('unbundle')
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if not unbundle:
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lock = pushop.remote.lock()
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try:
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_pushdiscovery(pushop)
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if _pushcheckoutgoing(pushop):
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pushop.repo.prepushoutgoinghooks(pushop.repo,
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pushop.remote,
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pushop.outgoing)
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if pushop.remote.capable('bundle2'):
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_pushbundle2(pushop)
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else:
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_pushchangeset(pushop)
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_pushcomputecommonheads(pushop)
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_pushsyncphase(pushop)
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_pushobsolete(pushop)
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finally:
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if lock is not None:
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lock.release()
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finally:
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if locallock is not None:
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locallock.release()
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_pushbookmark(pushop)
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return pushop.ret
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def _pushdiscovery(pushop):
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# discovery
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unfi = pushop.repo.unfiltered()
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fci = discovery.findcommonincoming
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commoninc = fci(unfi, pushop.remote, force=pushop.force)
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common, inc, remoteheads = commoninc
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fco = discovery.findcommonoutgoing
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outgoing = fco(unfi, pushop.remote, onlyheads=pushop.revs,
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commoninc=commoninc, force=pushop.force)
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pushop.outgoing = outgoing
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pushop.remoteheads = remoteheads
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pushop.incoming = inc
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def _pushcheckoutgoing(pushop):
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outgoing = pushop.outgoing
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unfi = pushop.repo.unfiltered()
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if not outgoing.missing:
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# nothing to push
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scmutil.nochangesfound(unfi.ui, unfi, outgoing.excluded)
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return False
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# something to push
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if not pushop.force:
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# if repo.obsstore == False --> no obsolete
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# then, save the iteration
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if unfi.obsstore:
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# this message are here for 80 char limit reason
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mso = _("push includes obsolete changeset: %s!")
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mst = "push includes %s changeset: %s!"
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# plain versions for i18n tool to detect them
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_("push includes unstable changeset: %s!")
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_("push includes bumped changeset: %s!")
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_("push includes divergent changeset: %s!")
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# If we are to push if there is at least one
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# obsolete or unstable changeset in missing, at
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# least one of the missinghead will be obsolete or
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# unstable. So checking heads only is ok
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for node in outgoing.missingheads:
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ctx = unfi[node]
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if ctx.obsolete():
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raise util.Abort(mso % ctx)
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elif ctx.troubled():
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raise util.Abort(_(mst)
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% (ctx.troubles()[0],
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ctx))
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newbm = pushop.ui.configlist('bookmarks', 'pushing')
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discovery.checkheads(unfi, pushop.remote, outgoing,
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pushop.remoteheads,
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pushop.newbranch,
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bool(pushop.incoming),
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newbm)
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return True
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def _pushbundle2(pushop):
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"""push data to the remote using bundle2
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The only currently supported type of data is changegroup but this will
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evolve in the future."""
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# Send known head to the server for race detection.
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bundler = bundle2.bundle20(pushop.ui)
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if not pushop.force:
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part = bundle2.bundlepart('CHECK:HEADS', data=iter(pushop.remoteheads))
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bundler.addpart(part)
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# add the changegroup bundle
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cg = changegroup.getlocalbundle(pushop.repo, 'push', pushop.outgoing)
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cgpart = bundle2.bundlepart('CHANGEGROUP', data=cg.getchunks())
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bundler.addpart(cgpart)
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stream = util.chunkbuffer(bundler.getchunks())
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sent = bundle2.unbundle20(pushop.repo.ui, stream)
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reply = pushop.remote.unbundle(sent, ['force'], 'push')
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try:
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op = bundle2.processbundle(pushop.repo, reply)
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except KeyError, exc:
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raise util.Abort('missing support for %s' % exc)
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cgreplies = op.records.getreplies(cgpart.id)
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assert len(cgreplies['changegroup']) == 1
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pushop.ret = cgreplies['changegroup'][0]['return']
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def _pushchangeset(pushop):
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"""Make the actual push of changeset bundle to remote repo"""
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outgoing = pushop.outgoing
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unbundle = pushop.remote.capable('unbundle')
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# TODO: get bundlecaps from remote
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bundlecaps = None
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# create a changegroup from local
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if pushop.revs is None and not (outgoing.excluded
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or pushop.repo.changelog.filteredrevs):
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# push everything,
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# use the fast path, no race possible on push
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bundler = changegroup.bundle10(pushop.repo, bundlecaps)
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cg = changegroup.getsubset(pushop.repo,
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outgoing,
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bundler,
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'push',
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fastpath=True)
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else:
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cg = changegroup.getlocalbundle(pushop.repo, 'push', outgoing,
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bundlecaps)
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# apply changegroup to remote
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if unbundle:
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# local repo finds heads on server, finds out what
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# revs it must push. once revs transferred, if server
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# finds it has different heads (someone else won
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# commit/push race), server aborts.
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if pushop.force:
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remoteheads = ['force']
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else:
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remoteheads = pushop.remoteheads
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# ssh: return remote's addchangegroup()
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# http: return remote's addchangegroup() or 0 for error
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pushop.ret = pushop.remote.unbundle(cg, remoteheads,
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'push')
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else:
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# we return an integer indicating remote head count
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# change
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pushop.ret = pushop.remote.addchangegroup(cg, 'push', pushop.repo.url())
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def _pushcomputecommonheads(pushop):
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unfi = pushop.repo.unfiltered()
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if pushop.ret:
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# push succeed, synchronize target of the push
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cheads = pushop.outgoing.missingheads
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elif pushop.revs is None:
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# All out push fails. synchronize all common
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cheads = pushop.outgoing.commonheads
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else:
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# I want cheads = heads(::missingheads and ::commonheads)
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# (missingheads is revs with secret changeset filtered out)
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#
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# This can be expressed as:
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# cheads = ( (missingheads and ::commonheads)
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# + (commonheads and ::missingheads))"
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# )
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#
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# while trying to push we already computed the following:
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# common = (::commonheads)
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# missing = ((commonheads::missingheads) - commonheads)
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#
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# We can pick:
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# * missingheads part of common (::commonheads)
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common = set(pushop.outgoing.common)
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nm = pushop.repo.changelog.nodemap
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cheads = [node for node in pushop.revs if nm[node] in common]
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# and
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# * commonheads parents on missing
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revset = unfi.set('%ln and parents(roots(%ln))',
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pushop.outgoing.commonheads,
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pushop.outgoing.missing)
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cheads.extend(c.node() for c in revset)
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pushop.commonheads = cheads
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def _pushsyncphase(pushop):
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"""synchronise phase information locally and remotely"""
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unfi = pushop.repo.unfiltered()
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cheads = pushop.commonheads
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if pushop.ret:
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# push succeed, synchronize target of the push
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cheads = pushop.outgoing.missingheads
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elif pushop.revs is None:
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# All out push fails. synchronize all common
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cheads = pushop.outgoing.commonheads
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else:
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# I want cheads = heads(::missingheads and ::commonheads)
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# (missingheads is revs with secret changeset filtered out)
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#
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# This can be expressed as:
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# cheads = ( (missingheads and ::commonheads)
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# + (commonheads and ::missingheads))"
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# )
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#
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# while trying to push we already computed the following:
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# common = (::commonheads)
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# missing = ((commonheads::missingheads) - commonheads)
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#
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# We can pick:
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# * missingheads part of common (::commonheads)
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common = set(pushop.outgoing.common)
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nm = pushop.repo.changelog.nodemap
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cheads = [node for node in pushop.revs if nm[node] in common]
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# and
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# * commonheads parents on missing
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revset = unfi.set('%ln and parents(roots(%ln))',
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pushop.outgoing.commonheads,
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pushop.outgoing.missing)
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cheads.extend(c.node() for c in revset)
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pushop.commonheads = cheads
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# even when we don't push, exchanging phase data is useful
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remotephases = pushop.remote.listkeys('phases')
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if (pushop.ui.configbool('ui', '_usedassubrepo', False)
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and remotephases # server supports phases
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and pushop.ret is None # nothing was pushed
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and remotephases.get('publishing', False)):
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# When:
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# - this is a subrepo push
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# - and remote support phase
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# - and no changeset was pushed
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# - and remote is publishing
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# We may be in issue 3871 case!
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# We drop the possible phase synchronisation done by
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# courtesy to publish changesets possibly locally draft
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# on the remote.
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remotephases = {'publishing': 'True'}
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if not remotephases: # old server or public only reply from non-publishing
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_localphasemove(pushop, cheads)
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# don't push any phase data as there is nothing to push
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else:
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ana = phases.analyzeremotephases(pushop.repo, cheads,
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remotephases)
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pheads, droots = ana
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### Apply remote phase on local
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if remotephases.get('publishing', False):
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_localphasemove(pushop, cheads)
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else: # publish = False
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_localphasemove(pushop, pheads)
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_localphasemove(pushop, cheads, phases.draft)
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### Apply local phase on remote
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# Get the list of all revs draft on remote by public here.
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# XXX Beware that revset break if droots is not strictly
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# XXX root we may want to ensure it is but it is costly
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outdated = unfi.set('heads((%ln::%ln) and public())',
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droots, cheads)
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for newremotehead in outdated:
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r = pushop.remote.pushkey('phases',
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newremotehead.hex(),
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str(phases.draft),
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str(phases.public))
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if not r:
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pushop.ui.warn(_('updating %s to public failed!\n')
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% newremotehead)
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def _localphasemove(pushop, nodes, phase=phases.public):
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"""move <nodes> to <phase> in the local source repo"""
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if pushop.locallocked:
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phases.advanceboundary(pushop.repo, phase, nodes)
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else:
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# repo is not locked, do not change any phases!
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# Informs the user that phases should have been moved when
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# applicable.
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actualmoves = [n for n in nodes if phase < pushop.repo[n].phase()]
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phasestr = phases.phasenames[phase]
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if actualmoves:
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pushop.ui.status(_('cannot lock source repo, skipping '
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'local %s phase update\n') % phasestr)
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def _pushobsolete(pushop):
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"""utility function to push obsolete markers to a remote"""
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pushop.ui.debug('try to push obsolete markers to remote\n')
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repo = pushop.repo
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remote = pushop.remote
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if (obsolete._enabled and repo.obsstore and
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'obsolete' in remote.listkeys('namespaces')):
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rslts = []
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remotedata = repo.listkeys('obsolete')
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for key in sorted(remotedata, reverse=True):
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# reverse sort to ensure we end with dump0
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data = remotedata[key]
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rslts.append(remote.pushkey('obsolete', key, '', data))
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if [r for r in rslts if not r]:
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msg = _('failed to push some obsolete markers!\n')
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repo.ui.warn(msg)
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def _pushbookmark(pushop):
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"""Update bookmark position on remote"""
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ui = pushop.ui
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repo = pushop.repo.unfiltered()
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remote = pushop.remote
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ui.debug("checking for updated bookmarks\n")
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revnums = map(repo.changelog.rev, pushop.revs or [])
|
|
|
ancestors = [a for a in repo.changelog.ancestors(revnums, inclusive=True)]
|
|
|
(addsrc, adddst, advsrc, advdst, diverge, differ, invalid
|
|
|
) = bookmarks.compare(repo, repo._bookmarks, remote.listkeys('bookmarks'),
|
|
|
srchex=hex)
|
|
|
|
|
|
for b, scid, dcid in advsrc:
|
|
|
if ancestors and repo[scid].rev() not in ancestors:
|
|
|
continue
|
|
|
if remote.pushkey('bookmarks', b, dcid, scid):
|
|
|
ui.status(_("updating bookmark %s\n") % b)
|
|
|
else:
|
|
|
ui.warn(_('updating bookmark %s failed!\n') % b)
|
|
|
|
|
|
class pulloperation(object):
|
|
|
"""A object that represent a single pull operation
|
|
|
|
|
|
It purpose is to carry push 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):
|
|
|
# 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
|
|
|
# do we force pull?
|
|
|
self.force = force
|
|
|
# the name the pull transaction
|
|
|
self._trname = 'pull\n' + util.hidepassword(remote.url())
|
|
|
# hold the transaction once created
|
|
|
self._tr = 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
|
|
|
# result of changegroup pulling (used as return code by pull)
|
|
|
self.cgresult = None
|
|
|
# list of step remaining todo (related to future bundle2 usage)
|
|
|
self.todosteps = set(['changegroup', 'phases', 'obsmarkers'])
|
|
|
|
|
|
@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
|
|
|
|
|
|
def gettransaction(self):
|
|
|
"""get appropriate pull transaction, creating it if needed"""
|
|
|
if self._tr is None:
|
|
|
self._tr = self.repo.transaction(self._trname)
|
|
|
return self._tr
|
|
|
|
|
|
def closetransaction(self):
|
|
|
"""close transaction if created"""
|
|
|
if self._tr is not None:
|
|
|
self._tr.close()
|
|
|
|
|
|
def releasetransaction(self):
|
|
|
"""release transaction if created"""
|
|
|
if self._tr is not None:
|
|
|
self._tr.release()
|
|
|
|
|
|
def pull(repo, remote, heads=None, force=False):
|
|
|
pullop = pulloperation(repo, remote, heads, force)
|
|
|
if pullop.remote.local():
|
|
|
missing = set(pullop.remote.requirements) - pullop.repo.supported
|
|
|
if missing:
|
|
|
msg = _("required features are not"
|
|
|
" supported in the destination:"
|
|
|
" %s") % (', '.join(sorted(missing)))
|
|
|
raise util.Abort(msg)
|
|
|
|
|
|
lock = pullop.repo.lock()
|
|
|
try:
|
|
|
_pulldiscovery(pullop)
|
|
|
if pullop.remote.capable('bundle2'):
|
|
|
_pullbundle2(pullop)
|
|
|
if 'changegroup' in pullop.todosteps:
|
|
|
_pullchangeset(pullop)
|
|
|
if 'phases' in pullop.todosteps:
|
|
|
_pullphase(pullop)
|
|
|
if 'obsmarkers' in pullop.todosteps:
|
|
|
_pullobsolete(pullop)
|
|
|
pullop.closetransaction()
|
|
|
finally:
|
|
|
pullop.releasetransaction()
|
|
|
lock.release()
|
|
|
|
|
|
return pullop.cgresult
|
|
|
|
|
|
def _pulldiscovery(pullop):
|
|
|
"""discovery phase for the pull
|
|
|
|
|
|
Current handle changeset discovery only, will change handle all discovery
|
|
|
at some point."""
|
|
|
tmp = discovery.findcommonincoming(pullop.repo.unfiltered(),
|
|
|
pullop.remote,
|
|
|
heads=pullop.heads,
|
|
|
force=pullop.force)
|
|
|
pullop.common, pullop.fetch, pullop.rheads = tmp
|
|
|
|
|
|
def _pullbundle2(pullop):
|
|
|
"""pull data using bundle2
|
|
|
|
|
|
For now, the only supported data are changegroup."""
|
|
|
kwargs = {'bundlecaps': set(['HG20'])}
|
|
|
# pulling changegroup
|
|
|
pullop.todosteps.remove('changegroup')
|
|
|
if not pullop.fetch:
|
|
|
pullop.repo.ui.status(_("no changes found\n"))
|
|
|
pullop.cgresult = 0
|
|
|
else:
|
|
|
kwargs['common'] = pullop.common
|
|
|
kwargs['heads'] = pullop.heads or pullop.rheads
|
|
|
if pullop.heads is None and list(pullop.common) == [nullid]:
|
|
|
pullop.repo.ui.status(_("requesting all changes\n"))
|
|
|
if kwargs.keys() == ['format']:
|
|
|
return # nothing to pull
|
|
|
bundle = pullop.remote.getbundle('pull', **kwargs)
|
|
|
try:
|
|
|
op = bundle2.processbundle(pullop.repo, bundle, pullop.gettransaction)
|
|
|
except KeyError, exc:
|
|
|
raise util.Abort('missing support for %s' % exc)
|
|
|
assert len(op.records['changegroup']) == 1
|
|
|
pullop.cgresult = op.records['changegroup'][0]['return']
|
|
|
|
|
|
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
|
|
|
pullop.todosteps.remove('changegroup')
|
|
|
if not pullop.fetch:
|
|
|
pullop.repo.ui.status(_("no changes found\n"))
|
|
|
pullop.cgresult = 0
|
|
|
return
|
|
|
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 util.Abort(_("partial pull cannot be done because "
|
|
|
"other repository doesn't support "
|
|
|
"changegroupsubset."))
|
|
|
else:
|
|
|
cg = pullop.remote.changegroupsubset(pullop.fetch, pullop.heads, 'pull')
|
|
|
pullop.cgresult = changegroup.addchangegroup(pullop.repo, cg, 'pull',
|
|
|
pullop.remote.url())
|
|
|
|
|
|
def _pullphase(pullop):
|
|
|
# Get remote phases data from remote
|
|
|
pullop.todosteps.remove('phases')
|
|
|
remotephases = pullop.remote.listkeys('phases')
|
|
|
publishing = bool(remotephases.get('publishing', False))
|
|
|
if remotephases and not publishing:
|
|
|
# remote is new and unpublishing
|
|
|
pheads, _dr = phases.analyzeremotephases(pullop.repo,
|
|
|
pullop.pulledsubset,
|
|
|
remotephases)
|
|
|
phases.advanceboundary(pullop.repo, phases.public, pheads)
|
|
|
phases.advanceboundary(pullop.repo, phases.draft,
|
|
|
pullop.pulledsubset)
|
|
|
else:
|
|
|
# Remote is old or publishing all common changesets
|
|
|
# should be seen as public
|
|
|
phases.advanceboundary(pullop.repo, phases.public,
|
|
|
pullop.pulledsubset)
|
|
|
|
|
|
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"""
|
|
|
pullop.todosteps.remove('obsmarkers')
|
|
|
tr = None
|
|
|
if obsolete._enabled:
|
|
|
pullop.repo.ui.debug('fetching remote obsolete markers\n')
|
|
|
remoteobs = pullop.remote.listkeys('obsolete')
|
|
|
if 'dump0' in remoteobs:
|
|
|
tr = pullop.gettransaction()
|
|
|
for key in sorted(remoteobs, reverse=True):
|
|
|
if key.startswith('dump'):
|
|
|
data = base85.b85decode(remoteobs[key])
|
|
|
pullop.repo.obsstore.mergemarkers(tr, data)
|
|
|
pullop.repo.invalidatevolatilesets()
|
|
|
return tr
|
|
|
|
|
|
def getbundle(repo, source, heads=None, common=None, bundlecaps=None):
|
|
|
"""return a full bundle (with potentially multiple kind of parts)
|
|
|
|
|
|
Could be a bundle HG10 or a bundle HG20 depending on bundlecaps
|
|
|
passed. For now, the bundle can contain only changegroup, but this will
|
|
|
changes when more part type will be available for bundle2.
|
|
|
|
|
|
This is different from changegroup.getbundle that only returns an HG10
|
|
|
changegroup bundle. They may eventually get reunited in the future when we
|
|
|
have a clearer idea of the API we what to query different data.
|
|
|
|
|
|
The implementation is at a very early stage and will get massive rework
|
|
|
when the API of bundle is refined.
|
|
|
"""
|
|
|
# build bundle here.
|
|
|
cg = changegroup.getbundle(repo, source, heads=heads,
|
|
|
common=common, bundlecaps=bundlecaps)
|
|
|
if bundlecaps is None or 'HG20' not in bundlecaps:
|
|
|
return cg
|
|
|
# very crude first implementation,
|
|
|
# the bundle API will change and the generation will be done lazily.
|
|
|
bundler = bundle2.bundle20(repo.ui)
|
|
|
part = bundle2.bundlepart('changegroup', data=cg.getchunks())
|
|
|
bundler.addpart(part)
|
|
|
return bundle2.unbundle20(repo.ui, util.chunkbuffer(bundler.getchunks()))
|
|
|
|
|
|
class PushRaced(RuntimeError):
|
|
|
"""An exception raised during unbundling that indicate a push race"""
|
|
|
|
|
|
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 = util.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 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
|
|
|
tr = None
|
|
|
lock = repo.lock()
|
|
|
try:
|
|
|
check_heads(repo, heads, 'uploading changes')
|
|
|
# push can proceed
|
|
|
if util.safehasattr(cg, 'params'):
|
|
|
tr = repo.transaction('unbundle')
|
|
|
ret = bundle2.processbundle(repo, cg, lambda: tr)
|
|
|
tr.close()
|
|
|
stream = util.chunkbuffer(ret.reply.getchunks())
|
|
|
r = bundle2.unbundle20(repo.ui, stream)
|
|
|
else:
|
|
|
r = changegroup.addchangegroup(repo, cg, source, url)
|
|
|
finally:
|
|
|
if tr is not None:
|
|
|
tr.release()
|
|
|
lock.release()
|
|
|
return r
|
|
|
|
