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# bundlerepo.py - repository class for viewing uncompressed bundles
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#
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# Copyright 2006, 2007 Benoit Boissinot <bboissin@gmail.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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"""Repository class for viewing uncompressed bundles.
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This provides a read-only repository interface to bundles as if they
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were part of the actual repository.
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"""
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from __future__ import absolute_import
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import os
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import shutil
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from .i18n import _
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from .node import nullid, nullrev
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from . import (
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bundle2,
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changegroup,
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changelog,
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cmdutil,
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discovery,
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encoding,
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error,
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exchange,
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filelog,
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localrepo,
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manifest,
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mdiff,
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node as nodemod,
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pathutil,
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phases,
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pycompat,
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revlog,
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util,
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vfs as vfsmod,
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)
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class bundlerevlog(revlog.revlog):
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def __init__(self, opener, indexfile, cgunpacker, linkmapper):
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# How it works:
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# To retrieve a revision, we need to know the offset of the revision in
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# the bundle (an unbundle object). We store this offset in the index
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# (start). The base of the delta is stored in the base field.
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#
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# To differentiate a rev in the bundle from a rev in the revlog, we
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# check revision against repotiprev.
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opener = vfsmod.readonlyvfs(opener)
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revlog.revlog.__init__(self, opener, indexfile)
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self.bundle = cgunpacker
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n = len(self)
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self.repotiprev = n - 1
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self.bundlerevs = set() # used by 'bundle()' revset expression
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for deltadata in cgunpacker.deltaiter():
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node, p1, p2, cs, deltabase, delta, flags = deltadata
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size = len(delta)
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start = cgunpacker.tell() - size
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link = linkmapper(cs)
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if node in self.nodemap:
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# this can happen if two branches make the same change
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self.bundlerevs.add(self.nodemap[node])
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continue
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for p in (p1, p2):
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if p not in self.nodemap:
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raise error.LookupError(
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p, self.indexfile, _(b"unknown parent")
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)
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if deltabase not in self.nodemap:
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raise LookupError(
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deltabase, self.indexfile, _(b'unknown delta base')
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)
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baserev = self.rev(deltabase)
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# start, size, full unc. size, base (unused), link, p1, p2, node
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e = (
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revlog.offset_type(start, flags),
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size,
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-1,
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baserev,
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link,
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self.rev(p1),
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self.rev(p2),
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node,
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)
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self.index.append(e)
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self.nodemap[node] = n
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self.bundlerevs.add(n)
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n += 1
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def _chunk(self, rev, df=None):
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# Warning: in case of bundle, the diff is against what we stored as
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# delta base, not against rev - 1
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# XXX: could use some caching
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if rev <= self.repotiprev:
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return revlog.revlog._chunk(self, rev)
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self.bundle.seek(self.start(rev))
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return self.bundle.read(self.length(rev))
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def revdiff(self, rev1, rev2):
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"""return or calculate a delta between two revisions"""
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if rev1 > self.repotiprev and rev2 > self.repotiprev:
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# hot path for bundle
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revb = self.index[rev2][3]
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if revb == rev1:
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return self._chunk(rev2)
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elif rev1 <= self.repotiprev and rev2 <= self.repotiprev:
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return revlog.revlog.revdiff(self, rev1, rev2)
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return mdiff.textdiff(self.rawdata(rev1), self.rawdata(rev2))
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def _rawtext(self, node, rev, _df=None):
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if rev is None:
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rev = self.rev(node)
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validated = False
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rawtext = None
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chain = []
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iterrev = rev
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# reconstruct the revision if it is from a changegroup
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while iterrev > self.repotiprev:
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if self._revisioncache and self._revisioncache[1] == iterrev:
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rawtext = self._revisioncache[2]
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break
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chain.append(iterrev)
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iterrev = self.index[iterrev][3]
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if iterrev == nullrev:
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rawtext = b''
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elif rawtext is None:
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r = super(bundlerevlog, self)._rawtext(
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self.node(iterrev), iterrev, _df=_df
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)
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__, rawtext, validated = r
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if chain:
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validated = False
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while chain:
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delta = self._chunk(chain.pop())
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rawtext = mdiff.patches(rawtext, [delta])
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return rev, rawtext, validated
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def addrevision(self, *args, **kwargs):
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raise NotImplementedError
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def addgroup(self, *args, **kwargs):
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raise NotImplementedError
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def strip(self, *args, **kwargs):
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raise NotImplementedError
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def checksize(self):
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raise NotImplementedError
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class bundlechangelog(bundlerevlog, changelog.changelog):
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def __init__(self, opener, cgunpacker):
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changelog.changelog.__init__(self, opener)
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linkmapper = lambda x: x
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bundlerevlog.__init__(
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self, opener, self.indexfile, cgunpacker, linkmapper
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)
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class bundlemanifest(bundlerevlog, manifest.manifestrevlog):
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def __init__(
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self, opener, cgunpacker, linkmapper, dirlogstarts=None, dir=b''
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):
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manifest.manifestrevlog.__init__(self, opener, tree=dir)
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bundlerevlog.__init__(
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self, opener, self.indexfile, cgunpacker, linkmapper
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)
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if dirlogstarts is None:
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dirlogstarts = {}
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if self.bundle.version == b"03":
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dirlogstarts = _getfilestarts(self.bundle)
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self._dirlogstarts = dirlogstarts
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self._linkmapper = linkmapper
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def dirlog(self, d):
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if d in self._dirlogstarts:
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self.bundle.seek(self._dirlogstarts[d])
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return bundlemanifest(
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self.opener,
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self.bundle,
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self._linkmapper,
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self._dirlogstarts,
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dir=d,
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)
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return super(bundlemanifest, self).dirlog(d)
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class bundlefilelog(filelog.filelog):
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def __init__(self, opener, path, cgunpacker, linkmapper):
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filelog.filelog.__init__(self, opener, path)
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self._revlog = bundlerevlog(
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opener, self.indexfile, cgunpacker, linkmapper
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)
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class bundlepeer(localrepo.localpeer):
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def canpush(self):
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return False
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class bundlephasecache(phases.phasecache):
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def __init__(self, *args, **kwargs):
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super(bundlephasecache, self).__init__(*args, **kwargs)
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if util.safehasattr(self, 'opener'):
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self.opener = vfsmod.readonlyvfs(self.opener)
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def write(self):
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raise NotImplementedError
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def _write(self, fp):
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raise NotImplementedError
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def _updateroots(self, phase, newroots, tr):
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self.phaseroots[phase] = newroots
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self.invalidate()
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self.dirty = True
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def _getfilestarts(cgunpacker):
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filespos = {}
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for chunkdata in iter(cgunpacker.filelogheader, {}):
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fname = chunkdata[b'filename']
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filespos[fname] = cgunpacker.tell()
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for chunk in iter(lambda: cgunpacker.deltachunk(None), {}):
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pass
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return filespos
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class bundlerepository(object):
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"""A repository instance that is a union of a local repo and a bundle.
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Instances represent a read-only repository composed of a local repository
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with the contents of a bundle file applied. The repository instance is
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conceptually similar to the state of a repository after an
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``hg unbundle`` operation. However, the contents of the bundle are never
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applied to the actual base repository.
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Instances constructed directly are not usable as repository objects.
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Use instance() or makebundlerepository() to create instances.
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"""
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def __init__(self, bundlepath, url, tempparent):
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self._tempparent = tempparent
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self._url = url
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self.ui.setconfig(b'phases', b'publish', False, b'bundlerepo')
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self.tempfile = None
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f = util.posixfile(bundlepath, b"rb")
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bundle = exchange.readbundle(self.ui, f, bundlepath)
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if isinstance(bundle, bundle2.unbundle20):
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self._bundlefile = bundle
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self._cgunpacker = None
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cgpart = None
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for part in bundle.iterparts(seekable=True):
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if part.type == b'changegroup':
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if cgpart:
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raise NotImplementedError(
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b"can't process multiple changegroups"
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)
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cgpart = part
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self._handlebundle2part(bundle, part)
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if not cgpart:
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raise error.Abort(_(b"No changegroups found"))
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# This is required to placate a later consumer, which expects
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# the payload offset to be at the beginning of the changegroup.
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# We need to do this after the iterparts() generator advances
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# because iterparts() will seek to end of payload after the
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# generator returns control to iterparts().
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cgpart.seek(0, os.SEEK_SET)
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elif isinstance(bundle, changegroup.cg1unpacker):
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if bundle.compressed():
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f = self._writetempbundle(
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bundle.read, b'.hg10un', header=b'HG10UN'
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)
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bundle = exchange.readbundle(self.ui, f, bundlepath, self.vfs)
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self._bundlefile = bundle
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self._cgunpacker = bundle
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else:
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raise error.Abort(
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_(b'bundle type %s cannot be read') % type(bundle)
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)
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# dict with the mapping 'filename' -> position in the changegroup.
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self._cgfilespos = {}
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self.firstnewrev = self.changelog.repotiprev + 1
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phases.retractboundary(
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self,
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None,
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phases.draft,
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[ctx.node() for ctx in self[self.firstnewrev :]],
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)
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def _handlebundle2part(self, bundle, part):
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if part.type != b'changegroup':
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return
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cgstream = part
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version = part.params.get(b'version', b'01')
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legalcgvers = changegroup.supportedincomingversions(self)
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if version not in legalcgvers:
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msg = _(b'Unsupported changegroup version: %s')
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raise error.Abort(msg % version)
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if bundle.compressed():
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cgstream = self._writetempbundle(part.read, b'.cg%sun' % version)
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self._cgunpacker = changegroup.getunbundler(version, cgstream, b'UN')
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def _writetempbundle(self, readfn, suffix, header=b''):
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"""Write a temporary file to disk
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"""
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fdtemp, temp = self.vfs.mkstemp(prefix=b"hg-bundle-", suffix=suffix)
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self.tempfile = temp
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with os.fdopen(fdtemp, 'wb') as fptemp:
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fptemp.write(header)
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while True:
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chunk = readfn(2 ** 18)
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if not chunk:
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break
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fptemp.write(chunk)
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return self.vfs.open(self.tempfile, mode=b"rb")
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@localrepo.unfilteredpropertycache
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def _phasecache(self):
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return bundlephasecache(self, self._phasedefaults)
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@localrepo.unfilteredpropertycache
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def changelog(self):
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# consume the header if it exists
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self._cgunpacker.changelogheader()
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c = bundlechangelog(self.svfs, self._cgunpacker)
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self.manstart = self._cgunpacker.tell()
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return c
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def _refreshchangelog(self):
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# changelog for bundle repo are not filecache, this method is not
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# applicable.
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pass
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@localrepo.unfilteredpropertycache
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def manifestlog(self):
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self._cgunpacker.seek(self.manstart)
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# consume the header if it exists
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self._cgunpacker.manifestheader()
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linkmapper = self.unfiltered().changelog.rev
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rootstore = bundlemanifest(self.svfs, self._cgunpacker, linkmapper)
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self.filestart = self._cgunpacker.tell()
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return manifest.manifestlog(
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self.svfs, self, rootstore, self.narrowmatch()
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)
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def _consumemanifest(self):
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"""Consumes the manifest portion of the bundle, setting filestart so the
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file portion can be read."""
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self._cgunpacker.seek(self.manstart)
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self._cgunpacker.manifestheader()
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for delta in self._cgunpacker.deltaiter():
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pass
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self.filestart = self._cgunpacker.tell()
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@localrepo.unfilteredpropertycache
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def manstart(self):
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self.changelog
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return self.manstart
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@localrepo.unfilteredpropertycache
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def filestart(self):
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self.manifestlog
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# If filestart was not set by self.manifestlog, that means the
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# manifestlog implementation did not consume the manifests from the
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# changegroup (ex: it might be consuming trees from a separate bundle2
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# part instead). So we need to manually consume it.
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if 'filestart' not in self.__dict__:
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self._consumemanifest()
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return self.filestart
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def url(self):
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return self._url
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def file(self, f):
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if not self._cgfilespos:
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self._cgunpacker.seek(self.filestart)
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self._cgfilespos = _getfilestarts(self._cgunpacker)
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if f in self._cgfilespos:
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self._cgunpacker.seek(self._cgfilespos[f])
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linkmapper = self.unfiltered().changelog.rev
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return bundlefilelog(self.svfs, f, self._cgunpacker, linkmapper)
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else:
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return super(bundlerepository, self).file(f)
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def close(self):
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"""Close assigned bundle file immediately."""
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self._bundlefile.close()
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if self.tempfile is not None:
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self.vfs.unlink(self.tempfile)
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if self._tempparent:
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shutil.rmtree(self._tempparent, True)
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def cancopy(self):
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return False
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def peer(self):
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return bundlepeer(self)
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def getcwd(self):
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return encoding.getcwd() # always outside the repo
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# Check if parents exist in localrepo before setting
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def setparents(self, p1, p2=nullid):
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p1rev = self.changelog.rev(p1)
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p2rev = self.changelog.rev(p2)
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msg = _(b"setting parent to node %s that only exists in the bundle\n")
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if self.changelog.repotiprev < p1rev:
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self.ui.warn(msg % nodemod.hex(p1))
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if self.changelog.repotiprev < p2rev:
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self.ui.warn(msg % nodemod.hex(p2))
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return super(bundlerepository, self).setparents(p1, p2)
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def instance(ui, path, create, intents=None, createopts=None):
|
|
|
if create:
|
|
|
raise error.Abort(_(b'cannot create new bundle repository'))
|
|
|
# internal config: bundle.mainreporoot
|
|
|
parentpath = ui.config(b"bundle", b"mainreporoot")
|
|
|
if not parentpath:
|
|
|
# try to find the correct path to the working directory repo
|
|
|
parentpath = cmdutil.findrepo(encoding.getcwd())
|
|
|
if parentpath is None:
|
|
|
parentpath = b''
|
|
|
if parentpath:
|
|
|
# Try to make the full path relative so we get a nice, short URL.
|
|
|
# In particular, we don't want temp dir names in test outputs.
|
|
|
cwd = encoding.getcwd()
|
|
|
if parentpath == cwd:
|
|
|
parentpath = b''
|
|
|
else:
|
|
|
cwd = pathutil.normasprefix(cwd)
|
|
|
if parentpath.startswith(cwd):
|
|
|
parentpath = parentpath[len(cwd) :]
|
|
|
u = util.url(path)
|
|
|
path = u.localpath()
|
|
|
if u.scheme == b'bundle':
|
|
|
s = path.split(b"+", 1)
|
|
|
if len(s) == 1:
|
|
|
repopath, bundlename = parentpath, s[0]
|
|
|
else:
|
|
|
repopath, bundlename = s
|
|
|
else:
|
|
|
repopath, bundlename = parentpath, path
|
|
|
|
|
|
return makebundlerepository(ui, repopath, bundlename)
|
|
|
|
|
|
|
|
|
def makebundlerepository(ui, repopath, bundlepath):
|
|
|
"""Make a bundle repository object based on repo and bundle paths."""
|
|
|
if repopath:
|
|
|
url = b'bundle:%s+%s' % (util.expandpath(repopath), bundlepath)
|
|
|
else:
|
|
|
url = b'bundle:%s' % bundlepath
|
|
|
|
|
|
# Because we can't make any guarantees about the type of the base
|
|
|
# repository, we can't have a static class representing the bundle
|
|
|
# repository. We also can't make any guarantees about how to even
|
|
|
# call the base repository's constructor!
|
|
|
#
|
|
|
# So, our strategy is to go through ``localrepo.instance()`` to construct
|
|
|
# a repo instance. Then, we dynamically create a new type derived from
|
|
|
# both it and our ``bundlerepository`` class which overrides some
|
|
|
# functionality. We then change the type of the constructed repository
|
|
|
# to this new type and initialize the bundle-specific bits of it.
|
|
|
|
|
|
try:
|
|
|
repo = localrepo.instance(ui, repopath, create=False)
|
|
|
tempparent = None
|
|
|
except error.RepoError:
|
|
|
tempparent = pycompat.mkdtemp()
|
|
|
try:
|
|
|
repo = localrepo.instance(ui, tempparent, create=True)
|
|
|
except Exception:
|
|
|
shutil.rmtree(tempparent)
|
|
|
raise
|
|
|
|
|
|
class derivedbundlerepository(bundlerepository, repo.__class__):
|
|
|
pass
|
|
|
|
|
|
repo.__class__ = derivedbundlerepository
|
|
|
bundlerepository.__init__(repo, bundlepath, url, tempparent)
|
|
|
|
|
|
return repo
|
|
|
|
|
|
|
|
|
class bundletransactionmanager(object):
|
|
|
def transaction(self):
|
|
|
return None
|
|
|
|
|
|
def close(self):
|
|
|
raise NotImplementedError
|
|
|
|
|
|
def release(self):
|
|
|
raise NotImplementedError
|
|
|
|
|
|
|
|
|
def getremotechanges(
|
|
|
ui, repo, peer, onlyheads=None, bundlename=None, force=False
|
|
|
):
|
|
|
'''obtains a bundle of changes incoming from peer
|
|
|
|
|
|
"onlyheads" restricts the returned changes to those reachable from the
|
|
|
specified heads.
|
|
|
"bundlename", if given, stores the bundle to this file path permanently;
|
|
|
otherwise it's stored to a temp file and gets deleted again when you call
|
|
|
the returned "cleanupfn".
|
|
|
"force" indicates whether to proceed on unrelated repos.
|
|
|
|
|
|
Returns a tuple (local, csets, cleanupfn):
|
|
|
|
|
|
"local" is a local repo from which to obtain the actual incoming
|
|
|
changesets; it is a bundlerepo for the obtained bundle when the
|
|
|
original "peer" is remote.
|
|
|
"csets" lists the incoming changeset node ids.
|
|
|
"cleanupfn" must be called without arguments when you're done processing
|
|
|
the changes; it closes both the original "peer" and the one returned
|
|
|
here.
|
|
|
'''
|
|
|
tmp = discovery.findcommonincoming(repo, peer, heads=onlyheads, force=force)
|
|
|
common, incoming, rheads = tmp
|
|
|
if not incoming:
|
|
|
try:
|
|
|
if bundlename:
|
|
|
os.unlink(bundlename)
|
|
|
except OSError:
|
|
|
pass
|
|
|
return repo, [], peer.close
|
|
|
|
|
|
commonset = set(common)
|
|
|
rheads = [x for x in rheads if x not in commonset]
|
|
|
|
|
|
bundle = None
|
|
|
bundlerepo = None
|
|
|
localrepo = peer.local()
|
|
|
if bundlename or not localrepo:
|
|
|
# create a bundle (uncompressed if peer repo is not local)
|
|
|
|
|
|
# developer config: devel.legacy.exchange
|
|
|
legexc = ui.configlist(b'devel', b'legacy.exchange')
|
|
|
forcebundle1 = b'bundle2' not in legexc and b'bundle1' in legexc
|
|
|
canbundle2 = (
|
|
|
not forcebundle1
|
|
|
and peer.capable(b'getbundle')
|
|
|
and peer.capable(b'bundle2')
|
|
|
)
|
|
|
if canbundle2:
|
|
|
with peer.commandexecutor() as e:
|
|
|
b2 = e.callcommand(
|
|
|
b'getbundle',
|
|
|
{
|
|
|
b'source': b'incoming',
|
|
|
b'common': common,
|
|
|
b'heads': rheads,
|
|
|
b'bundlecaps': exchange.caps20to10(
|
|
|
repo, role=b'client'
|
|
|
),
|
|
|
b'cg': True,
|
|
|
},
|
|
|
).result()
|
|
|
|
|
|
fname = bundle = changegroup.writechunks(
|
|
|
ui, b2._forwardchunks(), bundlename
|
|
|
)
|
|
|
else:
|
|
|
if peer.capable(b'getbundle'):
|
|
|
with peer.commandexecutor() as e:
|
|
|
cg = e.callcommand(
|
|
|
b'getbundle',
|
|
|
{
|
|
|
b'source': b'incoming',
|
|
|
b'common': common,
|
|
|
b'heads': rheads,
|
|
|
},
|
|
|
).result()
|
|
|
elif onlyheads is None and not peer.capable(b'changegroupsubset'):
|
|
|
# compat with older servers when pulling all remote heads
|
|
|
|
|
|
with peer.commandexecutor() as e:
|
|
|
cg = e.callcommand(
|
|
|
b'changegroup',
|
|
|
{b'nodes': incoming, b'source': b'incoming',},
|
|
|
).result()
|
|
|
|
|
|
rheads = None
|
|
|
else:
|
|
|
with peer.commandexecutor() as e:
|
|
|
cg = e.callcommand(
|
|
|
b'changegroupsubset',
|
|
|
{
|
|
|
b'bases': incoming,
|
|
|
b'heads': rheads,
|
|
|
b'source': b'incoming',
|
|
|
},
|
|
|
).result()
|
|
|
|
|
|
if localrepo:
|
|
|
bundletype = b"HG10BZ"
|
|
|
else:
|
|
|
bundletype = b"HG10UN"
|
|
|
fname = bundle = bundle2.writebundle(ui, cg, bundlename, bundletype)
|
|
|
# keep written bundle?
|
|
|
if bundlename:
|
|
|
bundle = None
|
|
|
if not localrepo:
|
|
|
# use the created uncompressed bundlerepo
|
|
|
localrepo = bundlerepo = makebundlerepository(
|
|
|
repo.baseui, repo.root, fname
|
|
|
)
|
|
|
|
|
|
# this repo contains local and peer now, so filter out local again
|
|
|
common = repo.heads()
|
|
|
if localrepo:
|
|
|
# Part of common may be remotely filtered
|
|
|
# So use an unfiltered version
|
|
|
# The discovery process probably need cleanup to avoid that
|
|
|
localrepo = localrepo.unfiltered()
|
|
|
|
|
|
csets = localrepo.changelog.findmissing(common, rheads)
|
|
|
|
|
|
if bundlerepo:
|
|
|
reponodes = [ctx.node() for ctx in bundlerepo[bundlerepo.firstnewrev :]]
|
|
|
|
|
|
with peer.commandexecutor() as e:
|
|
|
remotephases = e.callcommand(
|
|
|
b'listkeys', {b'namespace': b'phases',}
|
|
|
).result()
|
|
|
|
|
|
pullop = exchange.pulloperation(bundlerepo, peer, heads=reponodes)
|
|
|
pullop.trmanager = bundletransactionmanager()
|
|
|
exchange._pullapplyphases(pullop, remotephases)
|
|
|
|
|
|
def cleanup():
|
|
|
if bundlerepo:
|
|
|
bundlerepo.close()
|
|
|
if bundle:
|
|
|
os.unlink(bundle)
|
|
|
peer.close()
|
|
|
|
|
|
return (localrepo, csets, cleanup)
|
|
|
|