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Differential D4207

changegroup: emit delta group close chunk outside of deltagroup()
ClosedPublic

Authored by indygreg on Aug 9 2018, 4:52 PM.

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rHGfcdab6629dde: changegroup: emit delta group close chunk outside of deltagroup()
Summary

I want to make deltagroup() emit data structures rather than
serialized deltas. Upcoming commits will demonstrate why.

Diff Detail

Repository
rHG Mercurial
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

Revision Contents
Changeset List

PathPackages
Mmercurial/changegroup.py (16 lines)

Diff 10231

mercurial/changegroup.py

these changesets. In the case firstparent is nullrev the these changesets. In the case firstparent is nullrev the
changegroup starts with a full revision. changegroup starts with a full revision.
If units is not None, progress detail will be generated, units specifies If units is not None, progress detail will be generated, units specifies
the type of revlog that is touched (changelog, manifest, etc.). the type of revlog that is touched (changelog, manifest, etc.).
""" """
# if we don't have any revisions touched by these changesets, bail # if we don't have any revisions touched by these changesets, bail
if len(revs) == 0: if len(revs) == 0:
yield closechunk()
return return
cl = repo.changelog cl = repo.changelog
# add the parent of the first rev # add the parent of the first rev
p = store.parentrevs(revs[0])[0] p = store.parentrevs(revs[0])[0]
revs.insert(0, p) revs.insert(0, p)
yield chunkheader(l) yield chunkheader(l)
yield meta yield meta
for x in delta.deltachunks: for x in delta.deltachunks:
yield x yield x
if progress: if progress:
progress.complete() progress.complete()
yield closechunk()
class cgpacker(object): class cgpacker(object):
def __init__(self, repo, filematcher, version, allowreorder, def __init__(self, repo, filematcher, version, allowreorder,
deltaparentfn, builddeltaheader, manifestsend, deltaparentfn, builddeltaheader, manifestsend,
bundlecaps=None, ellipses=False, bundlecaps=None, ellipses=False,
shallow=False, ellipsisroots=None, fullnodes=None): shallow=False, ellipsisroots=None, fullnodes=None):
"""Given a source repo, construct a bundler. """Given a source repo, construct a bundler.
filematcher is a matcher that matches on files to include in the filematcher is a matcher that matches on files to include in the
self._verbosenote(_('uncompressed size of bundle content:\n')) self._verbosenote(_('uncompressed size of bundle content:\n'))
size = 0 size = 0
clstate, chunks = self._generatechangelog(cl, clnodes) clstate, chunks = self._generatechangelog(cl, clnodes)
for chunk in chunks: for chunk in chunks:
size += len(chunk) size += len(chunk)
yield chunk yield chunk
close = closechunk()
size += len(close)
yield closechunk()
self._verbosenote(_('%8.i (changelog)\n') % size) self._verbosenote(_('%8.i (changelog)\n') % size)
clrevorder = clstate['clrevorder'] clrevorder = clstate['clrevorder']
mfs = clstate['mfs'] mfs = clstate['mfs']
changedfiles = clstate['changedfiles'] changedfiles = clstate['changedfiles']
# We need to make sure that the linkrev in the changegroup refers to # We need to make sure that the linkrev in the changegroup refers to
# the first changeset that introduced the manifest or file revision. # the first changeset that introduced the manifest or file revision.
clrevtolocalrev=clrevtolocalrev, clrevtolocalrev=clrevtolocalrev,
fullclnodes=self._fullclnodes, fullclnodes=self._fullclnodes,
precomputedellipsis=self._precomputedellipsis) precomputedellipsis=self._precomputedellipsis)
for chunk in it: for chunk in it:
size += len(chunk) size += len(chunk)
yield chunk yield chunk
close = closechunk()
size += len(close)
yield close
self._verbosenote(_('%8.i (manifests)\n') % size) self._verbosenote(_('%8.i (manifests)\n') % size)
yield self._manifestsend yield self._manifestsend
# The 'source' parameter is useful for extensions # The 'source' parameter is useful for extensions
def generatefiles(self, changedfiles, commonrevs, source, def generatefiles(self, changedfiles, commonrevs, source,
mfdicts, fastpathlinkrev, fnodes, clrevs): mfdicts, fastpathlinkrev, fnodes, clrevs):
changedfiles = list(filter(self._filematcher, changedfiles)) changedfiles = list(filter(self._filematcher, changedfiles))
ellipses=self._ellipses, ellipses=self._ellipses,
clrevtolocalrev=clrevtolocalrev, clrevtolocalrev=clrevtolocalrev,
fullclnodes=self._fullclnodes, fullclnodes=self._fullclnodes,
precomputedellipsis=self._precomputedellipsis) precomputedellipsis=self._precomputedellipsis)
for chunk in it: for chunk in it:
size += len(chunk) size += len(chunk)
yield chunk yield chunk
close = closechunk()
size += len(close)
yield close
self._verbosenote(_('%8.i %s\n') % (size, fname)) self._verbosenote(_('%8.i %s\n') % (size, fname))
progress.complete() progress.complete()
def _deltaparentprev(store, rev, p1, p2, prev): def _deltaparentprev(store, rev, p1, p2, prev):
"""Resolve a delta parent to the previous revision. """Resolve a delta parent to the previous revision.
Used for version 1 changegroups, which don't support generaldelta. Used for version 1 changegroups, which don't support generaldelta.
""" """