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fix: obtain base paths before starting workers...
fix: obtain base paths before starting workers This moves calculation of base paths to before work is dispatched. While this does mean that copy tracing will be serialized instead of parallel, it is necessary to be able to prefetch the base contents in a batch, which will likely be more efficient. Differential Revision: https://phab.mercurial-scm.org/D8722

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narrowwirepeer.py
150 lines | 4.5 KiB | text/x-python | PythonLexer
# narrowwirepeer.py - passes narrow spec with unbundle command
#
# Copyright 2017 Google, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
from mercurial import (
bundle2,
error,
extensions,
hg,
narrowspec,
pycompat,
wireprototypes,
wireprotov1peer,
wireprotov1server,
)
from . import narrowbundle2
def uisetup():
wireprotov1peer.wirepeer.narrow_widen = peernarrowwiden
def reposetup(repo):
def wirereposetup(ui, peer):
def wrapped(orig, cmd, *args, **kwargs):
if cmd == b'unbundle':
# TODO: don't blindly add include/exclude wireproto
# arguments to unbundle.
include, exclude = repo.narrowpats
kwargs["includepats"] = b','.join(include)
kwargs["excludepats"] = b','.join(exclude)
return orig(cmd, *args, **kwargs)
extensions.wrapfunction(peer, b'_calltwowaystream', wrapped)
hg.wirepeersetupfuncs.append(wirereposetup)
@wireprotov1server.wireprotocommand(
b'narrow_widen',
b'oldincludes oldexcludes'
b' newincludes newexcludes'
b' commonheads cgversion'
b' known ellipses',
permission=b'pull',
)
def narrow_widen(
repo,
proto,
oldincludes,
oldexcludes,
newincludes,
newexcludes,
commonheads,
cgversion,
known,
ellipses,
):
"""wireprotocol command to send data when a narrow clone is widen. We will
be sending a changegroup here.
The current set of arguments which are required:
oldincludes: the old includes of the narrow copy
oldexcludes: the old excludes of the narrow copy
newincludes: the new includes of the narrow copy
newexcludes: the new excludes of the narrow copy
commonheads: list of heads which are common between the server and client
cgversion(maybe): the changegroup version to produce
known: list of nodes which are known on the client (used in ellipses cases)
ellipses: whether to send ellipses data or not
"""
preferuncompressed = False
try:
def splitpaths(data):
# work around ''.split(',') => ['']
return data.split(b',') if data else []
oldincludes = splitpaths(oldincludes)
newincludes = splitpaths(newincludes)
oldexcludes = splitpaths(oldexcludes)
newexcludes = splitpaths(newexcludes)
# validate the patterns
narrowspec.validatepatterns(set(oldincludes))
narrowspec.validatepatterns(set(newincludes))
narrowspec.validatepatterns(set(oldexcludes))
narrowspec.validatepatterns(set(newexcludes))
common = wireprototypes.decodelist(commonheads)
known = wireprototypes.decodelist(known)
if ellipses == b'0':
ellipses = False
else:
ellipses = bool(ellipses)
cgversion = cgversion
bundler = bundle2.bundle20(repo.ui)
newmatch = narrowspec.match(
repo.root, include=newincludes, exclude=newexcludes
)
oldmatch = narrowspec.match(
repo.root, include=oldincludes, exclude=oldexcludes
)
if not ellipses:
bundle2.widen_bundle(
bundler,
repo,
oldmatch,
newmatch,
common,
known,
cgversion,
ellipses,
)
else:
narrowbundle2.generate_ellipses_bundle2_for_widening(
bundler, repo, oldmatch, newmatch, cgversion, common, known,
)
except error.Abort as exc:
bundler = bundle2.bundle20(repo.ui)
manargs = [(b'message', pycompat.bytestr(exc))]
advargs = []
if exc.hint is not None:
advargs.append((b'hint', exc.hint))
bundler.addpart(bundle2.bundlepart(b'error:abort', manargs, advargs))
preferuncompressed = True
chunks = bundler.getchunks()
return wireprototypes.streamres(
gen=chunks, prefer_uncompressed=preferuncompressed
)
def peernarrowwiden(remote, **kwargs):
for ch in ('commonheads', 'known'):
kwargs[ch] = wireprototypes.encodelist(kwargs[ch])
for ch in ('oldincludes', 'newincludes', 'oldexcludes', 'newexcludes'):
kwargs[ch] = b','.join(kwargs[ch])
kwargs['ellipses'] = b'%i' % bool(kwargs['ellipses'])
f = remote._callcompressable(b'narrow_widen', **kwargs)
return bundle2.getunbundler(remote.ui, f)