stack: move data computation on the object
We gather multiple data about the stack on the object. Let us move this on the
object and keep it cached there.
from __future__ import absolute_import
import weakref
from mercurial.i18n import _
from mercurial import (
bundle2,
discovery,
error,
exchange,
extensions,
util,
wireproto,
)
def _headssummary(orig, *args):
# In mercurial < 4.2, we receive repo, remote and outgoing as arguments
if len(args) == 3:
pushoparg = False
repo, remote, outgoing = args
# In mercurial > 4.3, we receive the pushop as arguments
elif len(args) == 1:
pushoparg = True
pushop = args[0]
repo = pushop.repo.unfiltered()
remote = pushop.remote
else:
msg = 'topic-ext _headssummary() takes 1 or 3 arguments (%d given)'
raise TypeError(msg % len(args))
publishing = ('phases' not in remote.listkeys('namespaces')
or bool(remote.listkeys('phases').get('publishing', False)))
if publishing or not remote.capable('topics'):
return orig(*args)
class repocls(repo.__class__):
# awful hack to see branch as "branch:topic"
def __getitem__(self, key):
ctx = super(repocls, self).__getitem__(key)
oldbranch = ctx.branch
def branch():
branch = oldbranch()
topic = ctx.topic()
if topic:
branch = "%s:%s" % (branch, topic)
return branch
ctx.branch = branch
return ctx
def revbranchcache(self):
rbc = super(repocls, self).revbranchcache()
changelog = self.changelog
def branchinfo(rev):
branch, close = changelog.branchinfo(rev)
topic = repo[rev].topic()
if topic:
branch = "%s:%s" % (branch, topic)
return branch, close
rbc.branchinfo = branchinfo
return rbc
oldrepocls = repo.__class__
try:
repo.__class__ = repocls
unxx = repo.filtered('unfiltered-topic')
repo.unfiltered = lambda: unxx
if pushoparg:
pushop.repo = repo
summary = orig(pushop)
else:
summary = orig(repo, remote, outgoing)
for key, value in summary.iteritems():
if ':' in key: # This is a topic
if value[0] is None and value[1]:
summary[key] = ([value[1][0]], ) + value[1:]
return summary
finally:
if 'unfiltered' in vars(repo):
del repo.unfiltered
repo.__class__ = oldrepocls
def wireprotobranchmap(orig, repo, proto):
oldrepo = repo.__class__
try:
class repocls(repo.__class__):
def branchmap(self):
usetopic = not self.publishing()
return super(repocls, self).branchmap(topic=usetopic)
repo.__class__ = repocls
return orig(repo, proto)
finally:
repo.__class__ = oldrepo
# Discovery have deficiency around phases, branch can get new heads with pure
# phases change. This happened with a changeset was allowed to be pushed
# because it had a topic, but it later become public and create a new branch
# head.
#
# Handle this by doing an extra check for new head creation server side
def _nbheads(repo):
data = {}
for b in repo.branchmap().iterbranches():
if ':' in b[0]:
continue
data[b[0]] = len(b[1])
return data
def handlecheckheads(orig, op, inpart):
"""This is used to check for new heads when publishing changeset"""
orig(op, inpart)
if op.repo.publishing():
return
tr = op.gettransaction()
if tr.hookargs['source'] not in ('push', 'serve'): # not a push
return
tr._prepushheads = _nbheads(op.repo)
reporef = weakref.ref(op.repo)
oldvalidator = tr.validator
def validator(tr):
repo = reporef()
if repo is not None:
repo.invalidatecaches()
finalheads = _nbheads(repo)
for branch, oldnb in tr._prepushheads.iteritems():
newnb = finalheads.pop(branch, 0)
if oldnb < newnb:
msg = _('push create a new head on branch "%s"' % branch)
raise error.Abort(msg)
for branch, newnb in finalheads.iteritems():
if 1 < newnb:
msg = _('push create more than 1 head on new branch "%s"'
% branch)
raise error.Abort(msg)
return oldvalidator(tr)
tr.validator = validator
handlecheckheads.params = frozenset()
def _pushb2phases(orig, pushop, bundler):
checktypes = ('check:heads', 'check:updated-heads')
hascheck = any(p.type in checktypes for p in bundler._parts)
if not hascheck and pushop.outdatedphases:
exchange._pushb2ctxcheckheads(pushop, bundler)
return orig(pushop, bundler)
def wireprotocaps(orig, repo, proto):
caps = orig(repo, proto)
if repo.peer().capable('topics'):
caps.append('topics')
return caps
def modsetup(ui):
"""run at uisetup time to install all destinations wrapping"""
extensions.wrapfunction(discovery, '_headssummary', _headssummary)
extensions.wrapfunction(wireproto, 'branchmap', wireprotobranchmap)
extensions.wrapfunction(wireproto, '_capabilities', wireprotocaps)
# we need a proper wrap b2 part stuff
extensions.wrapfunction(bundle2, 'handlecheckheads', handlecheckheads)
bundle2.handlecheckheads.params = frozenset()
bundle2.parthandlermapping['check:heads'] = bundle2.handlecheckheads
if util.safehasattr(bundle2, 'handlecheckupdatedheads'):
# we still need a proper wrap b2 part stuff
extensions.wrapfunction(bundle2, 'handlecheckupdatedheads', handlecheckheads)
bundle2.handlecheckupdatedheads.params = frozenset()
bundle2.parthandlermapping['check:updated-heads'] = bundle2.handlecheckupdatedheads
extensions.wrapfunction(exchange, '_pushb2phases', _pushb2phases)
exchange.b2partsgenmapping['phase'] = exchange._pushb2phases