|
|
# __init__.py - fsmonitor initialization and overrides
|
|
|
#
|
|
|
# Copyright 2013-2016 Facebook, Inc.
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
|
|
'''Faster status operations with the Watchman file monitor (EXPERIMENTAL)
|
|
|
|
|
|
Integrates the file-watching program Watchman with Mercurial to produce faster
|
|
|
status results.
|
|
|
|
|
|
On a particular Linux system, for a real-world repository with over 400,000
|
|
|
files hosted on ext4, vanilla `hg status` takes 1.3 seconds. On the same
|
|
|
system, with fsmonitor it takes about 0.3 seconds.
|
|
|
|
|
|
fsmonitor requires no configuration -- it will tell Watchman about your
|
|
|
repository as necessary. You'll need to install Watchman from
|
|
|
https://facebook.github.io/watchman/ and make sure it is in your PATH.
|
|
|
|
|
|
fsmonitor is incompatible with the largefiles and eol extensions, and
|
|
|
will disable itself if any of those are active.
|
|
|
|
|
|
The following configuration options exist:
|
|
|
|
|
|
::
|
|
|
|
|
|
[fsmonitor]
|
|
|
mode = {off, on, paranoid}
|
|
|
|
|
|
When `mode = off`, fsmonitor will disable itself (similar to not loading the
|
|
|
extension at all). When `mode = on`, fsmonitor will be enabled (the default).
|
|
|
When `mode = paranoid`, fsmonitor will query both Watchman and the filesystem,
|
|
|
and ensure that the results are consistent.
|
|
|
|
|
|
::
|
|
|
|
|
|
[fsmonitor]
|
|
|
timeout = (float)
|
|
|
|
|
|
A value, in seconds, that determines how long fsmonitor will wait for Watchman
|
|
|
to return results. Defaults to `2.0`.
|
|
|
|
|
|
::
|
|
|
|
|
|
[fsmonitor]
|
|
|
blacklistusers = (list of userids)
|
|
|
|
|
|
A list of usernames for which fsmonitor will disable itself altogether.
|
|
|
|
|
|
::
|
|
|
|
|
|
[fsmonitor]
|
|
|
walk_on_invalidate = (boolean)
|
|
|
|
|
|
Whether or not to walk the whole repo ourselves when our cached state has been
|
|
|
invalidated, for example when Watchman has been restarted or .hgignore rules
|
|
|
have been changed. Walking the repo in that case can result in competing for
|
|
|
I/O with Watchman. For large repos it is recommended to set this value to
|
|
|
false. You may wish to set this to true if you have a very fast filesystem
|
|
|
that can outpace the IPC overhead of getting the result data for the full repo
|
|
|
from Watchman. Defaults to false.
|
|
|
|
|
|
::
|
|
|
|
|
|
[fsmonitor]
|
|
|
warn_when_unused = (boolean)
|
|
|
|
|
|
Whether to print a warning during certain operations when fsmonitor would be
|
|
|
beneficial to performance but isn't enabled.
|
|
|
|
|
|
::
|
|
|
|
|
|
[fsmonitor]
|
|
|
warn_update_file_count = (integer)
|
|
|
|
|
|
If ``warn_when_unused`` is set and fsmonitor isn't enabled, a warning will
|
|
|
be printed during working directory updates if this many files will be
|
|
|
created.
|
|
|
'''
|
|
|
|
|
|
# Platforms Supported
|
|
|
# ===================
|
|
|
#
|
|
|
# **Linux:** *Stable*. Watchman and fsmonitor are both known to work reliably,
|
|
|
# even under severe loads.
|
|
|
#
|
|
|
# **Mac OS X:** *Stable*. The Mercurial test suite passes with fsmonitor
|
|
|
# turned on, on case-insensitive HFS+. There has been a reasonable amount of
|
|
|
# user testing under normal loads.
|
|
|
#
|
|
|
# **Solaris, BSD:** *Alpha*. watchman and fsmonitor are believed to work, but
|
|
|
# very little testing has been done.
|
|
|
#
|
|
|
# **Windows:** *Alpha*. Not in a release version of watchman or fsmonitor yet.
|
|
|
#
|
|
|
# Known Issues
|
|
|
# ============
|
|
|
#
|
|
|
# * fsmonitor will disable itself if any of the following extensions are
|
|
|
# enabled: largefiles, inotify, eol; or if the repository has subrepos.
|
|
|
# * fsmonitor will produce incorrect results if nested repos that are not
|
|
|
# subrepos exist. *Workaround*: add nested repo paths to your `.hgignore`.
|
|
|
#
|
|
|
# The issues related to nested repos and subrepos are probably not fundamental
|
|
|
# ones. Patches to fix them are welcome.
|
|
|
|
|
|
from __future__ import absolute_import
|
|
|
|
|
|
import codecs
|
|
|
import hashlib
|
|
|
import os
|
|
|
import stat
|
|
|
import sys
|
|
|
import weakref
|
|
|
|
|
|
from mercurial.i18n import _
|
|
|
from mercurial.node import (
|
|
|
hex,
|
|
|
)
|
|
|
|
|
|
from mercurial import (
|
|
|
context,
|
|
|
encoding,
|
|
|
error,
|
|
|
extensions,
|
|
|
localrepo,
|
|
|
merge,
|
|
|
pathutil,
|
|
|
pycompat,
|
|
|
registrar,
|
|
|
scmutil,
|
|
|
util,
|
|
|
)
|
|
|
from mercurial import match as matchmod
|
|
|
|
|
|
from . import (
|
|
|
pywatchman,
|
|
|
state,
|
|
|
watchmanclient,
|
|
|
)
|
|
|
|
|
|
# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
|
|
|
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
|
|
|
# be specifying the version(s) of Mercurial they are tested with, or
|
|
|
# leave the attribute unspecified.
|
|
|
testedwith = 'ships-with-hg-core'
|
|
|
|
|
|
configtable = {}
|
|
|
configitem = registrar.configitem(configtable)
|
|
|
|
|
|
configitem('fsmonitor', 'mode',
|
|
|
default='on',
|
|
|
)
|
|
|
configitem('fsmonitor', 'walk_on_invalidate',
|
|
|
default=False,
|
|
|
)
|
|
|
configitem('fsmonitor', 'timeout',
|
|
|
default='2',
|
|
|
)
|
|
|
configitem('fsmonitor', 'blacklistusers',
|
|
|
default=list,
|
|
|
)
|
|
|
configitem('experimental', 'fsmonitor.transaction_notify',
|
|
|
default=False,
|
|
|
)
|
|
|
|
|
|
# This extension is incompatible with the following blacklisted extensions
|
|
|
# and will disable itself when encountering one of these:
|
|
|
_blacklist = ['largefiles', 'eol']
|
|
|
|
|
|
def _handleunavailable(ui, state, ex):
|
|
|
"""Exception handler for Watchman interaction exceptions"""
|
|
|
if isinstance(ex, watchmanclient.Unavailable):
|
|
|
if ex.warn:
|
|
|
ui.warn(str(ex) + '\n')
|
|
|
if ex.invalidate:
|
|
|
state.invalidate()
|
|
|
ui.log('fsmonitor', 'Watchman unavailable: %s\n', ex.msg)
|
|
|
else:
|
|
|
ui.log('fsmonitor', 'Watchman exception: %s\n', ex)
|
|
|
|
|
|
def _hashignore(ignore):
|
|
|
"""Calculate hash for ignore patterns and filenames
|
|
|
|
|
|
If this information changes between Mercurial invocations, we can't
|
|
|
rely on Watchman information anymore and have to re-scan the working
|
|
|
copy.
|
|
|
|
|
|
"""
|
|
|
sha1 = hashlib.sha1()
|
|
|
sha1.update(repr(ignore))
|
|
|
return sha1.hexdigest()
|
|
|
|
|
|
_watchmanencoding = pywatchman.encoding.get_local_encoding()
|
|
|
_fsencoding = sys.getfilesystemencoding() or sys.getdefaultencoding()
|
|
|
_fixencoding = codecs.lookup(_watchmanencoding) != codecs.lookup(_fsencoding)
|
|
|
|
|
|
def _watchmantofsencoding(path):
|
|
|
"""Fix path to match watchman and local filesystem encoding
|
|
|
|
|
|
watchman's paths encoding can differ from filesystem encoding. For example,
|
|
|
on Windows, it's always utf-8.
|
|
|
"""
|
|
|
try:
|
|
|
decoded = path.decode(_watchmanencoding)
|
|
|
except UnicodeDecodeError as e:
|
|
|
raise error.Abort(str(e), hint='watchman encoding error')
|
|
|
|
|
|
try:
|
|
|
encoded = decoded.encode(_fsencoding, 'strict')
|
|
|
except UnicodeEncodeError as e:
|
|
|
raise error.Abort(str(e))
|
|
|
|
|
|
return encoded
|
|
|
|
|
|
def overridewalk(orig, self, match, subrepos, unknown, ignored, full=True):
|
|
|
'''Replacement for dirstate.walk, hooking into Watchman.
|
|
|
|
|
|
Whenever full is False, ignored is False, and the Watchman client is
|
|
|
available, use Watchman combined with saved state to possibly return only a
|
|
|
subset of files.'''
|
|
|
def bail(reason):
|
|
|
self._ui.debug('fsmonitor: fallback to core status, %s\n' % reason)
|
|
|
return orig(match, subrepos, unknown, ignored, full=True)
|
|
|
|
|
|
if full:
|
|
|
return bail('full rewalk requested')
|
|
|
if ignored:
|
|
|
return bail('listing ignored files')
|
|
|
if not self._watchmanclient.available():
|
|
|
return bail('client unavailable')
|
|
|
state = self._fsmonitorstate
|
|
|
clock, ignorehash, notefiles = state.get()
|
|
|
if not clock:
|
|
|
if state.walk_on_invalidate:
|
|
|
return bail('no clock')
|
|
|
# Initial NULL clock value, see
|
|
|
# https://facebook.github.io/watchman/docs/clockspec.html
|
|
|
clock = 'c:0:0'
|
|
|
notefiles = []
|
|
|
|
|
|
def fwarn(f, msg):
|
|
|
self._ui.warn('%s: %s\n' % (self.pathto(f), msg))
|
|
|
return False
|
|
|
|
|
|
def badtype(mode):
|
|
|
kind = _('unknown')
|
|
|
if stat.S_ISCHR(mode):
|
|
|
kind = _('character device')
|
|
|
elif stat.S_ISBLK(mode):
|
|
|
kind = _('block device')
|
|
|
elif stat.S_ISFIFO(mode):
|
|
|
kind = _('fifo')
|
|
|
elif stat.S_ISSOCK(mode):
|
|
|
kind = _('socket')
|
|
|
elif stat.S_ISDIR(mode):
|
|
|
kind = _('directory')
|
|
|
return _('unsupported file type (type is %s)') % kind
|
|
|
|
|
|
ignore = self._ignore
|
|
|
dirignore = self._dirignore
|
|
|
if unknown:
|
|
|
if _hashignore(ignore) != ignorehash and clock != 'c:0:0':
|
|
|
# ignore list changed -- can't rely on Watchman state any more
|
|
|
if state.walk_on_invalidate:
|
|
|
return bail('ignore rules changed')
|
|
|
notefiles = []
|
|
|
clock = 'c:0:0'
|
|
|
else:
|
|
|
# always ignore
|
|
|
ignore = util.always
|
|
|
dirignore = util.always
|
|
|
|
|
|
matchfn = match.matchfn
|
|
|
matchalways = match.always()
|
|
|
dmap = self._map
|
|
|
if util.safehasattr(dmap, '_map'):
|
|
|
# for better performance, directly access the inner dirstate map if the
|
|
|
# standard dirstate implementation is in use.
|
|
|
dmap = dmap._map
|
|
|
nonnormalset = self._map.nonnormalset
|
|
|
|
|
|
copymap = self._map.copymap
|
|
|
getkind = stat.S_IFMT
|
|
|
dirkind = stat.S_IFDIR
|
|
|
regkind = stat.S_IFREG
|
|
|
lnkkind = stat.S_IFLNK
|
|
|
join = self._join
|
|
|
normcase = util.normcase
|
|
|
fresh_instance = False
|
|
|
|
|
|
exact = skipstep3 = False
|
|
|
if match.isexact(): # match.exact
|
|
|
exact = True
|
|
|
dirignore = util.always # skip step 2
|
|
|
elif match.prefix(): # match.match, no patterns
|
|
|
skipstep3 = True
|
|
|
|
|
|
if not exact and self._checkcase:
|
|
|
# note that even though we could receive directory entries, we're only
|
|
|
# interested in checking if a file with the same name exists. So only
|
|
|
# normalize files if possible.
|
|
|
normalize = self._normalizefile
|
|
|
skipstep3 = False
|
|
|
else:
|
|
|
normalize = None
|
|
|
|
|
|
# step 1: find all explicit files
|
|
|
results, work, dirsnotfound = self._walkexplicit(match, subrepos)
|
|
|
|
|
|
skipstep3 = skipstep3 and not (work or dirsnotfound)
|
|
|
work = [d for d in work if not dirignore(d[0])]
|
|
|
|
|
|
if not work and (exact or skipstep3):
|
|
|
for s in subrepos:
|
|
|
del results[s]
|
|
|
del results['.hg']
|
|
|
return results
|
|
|
|
|
|
# step 2: query Watchman
|
|
|
try:
|
|
|
# Use the user-configured timeout for the query.
|
|
|
# Add a little slack over the top of the user query to allow for
|
|
|
# overheads while transferring the data
|
|
|
self._watchmanclient.settimeout(state.timeout + 0.1)
|
|
|
result = self._watchmanclient.command('query', {
|
|
|
'fields': ['mode', 'mtime', 'size', 'exists', 'name'],
|
|
|
'since': clock,
|
|
|
'expression': [
|
|
|
'not', [
|
|
|
'anyof', ['dirname', '.hg'],
|
|
|
['name', '.hg', 'wholename']
|
|
|
]
|
|
|
],
|
|
|
'sync_timeout': int(state.timeout * 1000),
|
|
|
'empty_on_fresh_instance': state.walk_on_invalidate,
|
|
|
})
|
|
|
except Exception as ex:
|
|
|
_handleunavailable(self._ui, state, ex)
|
|
|
self._watchmanclient.clearconnection()
|
|
|
return bail('exception during run')
|
|
|
else:
|
|
|
# We need to propagate the last observed clock up so that we
|
|
|
# can use it for our next query
|
|
|
state.setlastclock(result['clock'])
|
|
|
if result['is_fresh_instance']:
|
|
|
if state.walk_on_invalidate:
|
|
|
state.invalidate()
|
|
|
return bail('fresh instance')
|
|
|
fresh_instance = True
|
|
|
# Ignore any prior noteable files from the state info
|
|
|
notefiles = []
|
|
|
|
|
|
# for file paths which require normalization and we encounter a case
|
|
|
# collision, we store our own foldmap
|
|
|
if normalize:
|
|
|
foldmap = dict((normcase(k), k) for k in results)
|
|
|
|
|
|
switch_slashes = pycompat.ossep == '\\'
|
|
|
# The order of the results is, strictly speaking, undefined.
|
|
|
# For case changes on a case insensitive filesystem we may receive
|
|
|
# two entries, one with exists=True and another with exists=False.
|
|
|
# The exists=True entries in the same response should be interpreted
|
|
|
# as being happens-after the exists=False entries due to the way that
|
|
|
# Watchman tracks files. We use this property to reconcile deletes
|
|
|
# for name case changes.
|
|
|
for entry in result['files']:
|
|
|
fname = entry['name']
|
|
|
if _fixencoding:
|
|
|
fname = _watchmantofsencoding(fname)
|
|
|
if switch_slashes:
|
|
|
fname = fname.replace('\\', '/')
|
|
|
if normalize:
|
|
|
normed = normcase(fname)
|
|
|
fname = normalize(fname, True, True)
|
|
|
foldmap[normed] = fname
|
|
|
fmode = entry['mode']
|
|
|
fexists = entry['exists']
|
|
|
kind = getkind(fmode)
|
|
|
|
|
|
if not fexists:
|
|
|
# if marked as deleted and we don't already have a change
|
|
|
# record, mark it as deleted. If we already have an entry
|
|
|
# for fname then it was either part of walkexplicit or was
|
|
|
# an earlier result that was a case change
|
|
|
if fname not in results and fname in dmap and (
|
|
|
matchalways or matchfn(fname)):
|
|
|
results[fname] = None
|
|
|
elif kind == dirkind:
|
|
|
if fname in dmap and (matchalways or matchfn(fname)):
|
|
|
results[fname] = None
|
|
|
elif kind == regkind or kind == lnkkind:
|
|
|
if fname in dmap:
|
|
|
if matchalways or matchfn(fname):
|
|
|
results[fname] = entry
|
|
|
elif (matchalways or matchfn(fname)) and not ignore(fname):
|
|
|
results[fname] = entry
|
|
|
elif fname in dmap and (matchalways or matchfn(fname)):
|
|
|
results[fname] = None
|
|
|
|
|
|
# step 3: query notable files we don't already know about
|
|
|
# XXX try not to iterate over the entire dmap
|
|
|
if normalize:
|
|
|
# any notable files that have changed case will already be handled
|
|
|
# above, so just check membership in the foldmap
|
|
|
notefiles = set((normalize(f, True, True) for f in notefiles
|
|
|
if normcase(f) not in foldmap))
|
|
|
visit = set((f for f in notefiles if (f not in results and matchfn(f)
|
|
|
and (f in dmap or not ignore(f)))))
|
|
|
|
|
|
if not fresh_instance:
|
|
|
if matchalways:
|
|
|
visit.update(f for f in nonnormalset if f not in results)
|
|
|
visit.update(f for f in copymap if f not in results)
|
|
|
else:
|
|
|
visit.update(f for f in nonnormalset
|
|
|
if f not in results and matchfn(f))
|
|
|
visit.update(f for f in copymap
|
|
|
if f not in results and matchfn(f))
|
|
|
else:
|
|
|
if matchalways:
|
|
|
visit.update(f for f, st in dmap.iteritems() if f not in results)
|
|
|
visit.update(f for f in copymap if f not in results)
|
|
|
else:
|
|
|
visit.update(f for f, st in dmap.iteritems()
|
|
|
if f not in results and matchfn(f))
|
|
|
visit.update(f for f in copymap
|
|
|
if f not in results and matchfn(f))
|
|
|
|
|
|
audit = pathutil.pathauditor(self._root, cached=True).check
|
|
|
auditpass = [f for f in visit if audit(f)]
|
|
|
auditpass.sort()
|
|
|
auditfail = visit.difference(auditpass)
|
|
|
for f in auditfail:
|
|
|
results[f] = None
|
|
|
|
|
|
nf = iter(auditpass).next
|
|
|
for st in util.statfiles([join(f) for f in auditpass]):
|
|
|
f = nf()
|
|
|
if st or f in dmap:
|
|
|
results[f] = st
|
|
|
|
|
|
for s in subrepos:
|
|
|
del results[s]
|
|
|
del results['.hg']
|
|
|
return results
|
|
|
|
|
|
def overridestatus(
|
|
|
orig, self, node1='.', node2=None, match=None, ignored=False,
|
|
|
clean=False, unknown=False, listsubrepos=False):
|
|
|
listignored = ignored
|
|
|
listclean = clean
|
|
|
listunknown = unknown
|
|
|
|
|
|
def _cmpsets(l1, l2):
|
|
|
try:
|
|
|
if 'FSMONITOR_LOG_FILE' in encoding.environ:
|
|
|
fn = encoding.environ['FSMONITOR_LOG_FILE']
|
|
|
f = open(fn, 'wb')
|
|
|
else:
|
|
|
fn = 'fsmonitorfail.log'
|
|
|
f = self.opener(fn, 'wb')
|
|
|
except (IOError, OSError):
|
|
|
self.ui.warn(_('warning: unable to write to %s\n') % fn)
|
|
|
return
|
|
|
|
|
|
try:
|
|
|
for i, (s1, s2) in enumerate(zip(l1, l2)):
|
|
|
if set(s1) != set(s2):
|
|
|
f.write('sets at position %d are unequal\n' % i)
|
|
|
f.write('watchman returned: %s\n' % s1)
|
|
|
f.write('stat returned: %s\n' % s2)
|
|
|
finally:
|
|
|
f.close()
|
|
|
|
|
|
if isinstance(node1, context.changectx):
|
|
|
ctx1 = node1
|
|
|
else:
|
|
|
ctx1 = self[node1]
|
|
|
if isinstance(node2, context.changectx):
|
|
|
ctx2 = node2
|
|
|
else:
|
|
|
ctx2 = self[node2]
|
|
|
|
|
|
working = ctx2.rev() is None
|
|
|
parentworking = working and ctx1 == self['.']
|
|
|
match = match or matchmod.always(self.root, self.getcwd())
|
|
|
|
|
|
# Maybe we can use this opportunity to update Watchman's state.
|
|
|
# Mercurial uses workingcommitctx and/or memctx to represent the part of
|
|
|
# the workingctx that is to be committed. So don't update the state in
|
|
|
# that case.
|
|
|
# HG_PENDING is set in the environment when the dirstate is being updated
|
|
|
# in the middle of a transaction; we must not update our state in that
|
|
|
# case, or we risk forgetting about changes in the working copy.
|
|
|
updatestate = (parentworking and match.always() and
|
|
|
not isinstance(ctx2, (context.workingcommitctx,
|
|
|
context.memctx)) and
|
|
|
'HG_PENDING' not in encoding.environ)
|
|
|
|
|
|
try:
|
|
|
if self._fsmonitorstate.walk_on_invalidate:
|
|
|
# Use a short timeout to query the current clock. If that
|
|
|
# takes too long then we assume that the service will be slow
|
|
|
# to answer our query.
|
|
|
# walk_on_invalidate indicates that we prefer to walk the
|
|
|
# tree ourselves because we can ignore portions that Watchman
|
|
|
# cannot and we tend to be faster in the warmer buffer cache
|
|
|
# cases.
|
|
|
self._watchmanclient.settimeout(0.1)
|
|
|
else:
|
|
|
# Give Watchman more time to potentially complete its walk
|
|
|
# and return the initial clock. In this mode we assume that
|
|
|
# the filesystem will be slower than parsing a potentially
|
|
|
# very large Watchman result set.
|
|
|
self._watchmanclient.settimeout(
|
|
|
self._fsmonitorstate.timeout + 0.1)
|
|
|
startclock = self._watchmanclient.getcurrentclock()
|
|
|
except Exception as ex:
|
|
|
self._watchmanclient.clearconnection()
|
|
|
_handleunavailable(self.ui, self._fsmonitorstate, ex)
|
|
|
# boo, Watchman failed. bail
|
|
|
return orig(node1, node2, match, listignored, listclean,
|
|
|
listunknown, listsubrepos)
|
|
|
|
|
|
if updatestate:
|
|
|
# We need info about unknown files. This may make things slower the
|
|
|
# first time, but whatever.
|
|
|
stateunknown = True
|
|
|
else:
|
|
|
stateunknown = listunknown
|
|
|
|
|
|
if updatestate:
|
|
|
ps = poststatus(startclock)
|
|
|
self.addpostdsstatus(ps)
|
|
|
|
|
|
r = orig(node1, node2, match, listignored, listclean, stateunknown,
|
|
|
listsubrepos)
|
|
|
modified, added, removed, deleted, unknown, ignored, clean = r
|
|
|
|
|
|
if not listunknown:
|
|
|
unknown = []
|
|
|
|
|
|
# don't do paranoid checks if we're not going to query Watchman anyway
|
|
|
full = listclean or match.traversedir is not None
|
|
|
if self._fsmonitorstate.mode == 'paranoid' and not full:
|
|
|
# run status again and fall back to the old walk this time
|
|
|
self.dirstate._fsmonitordisable = True
|
|
|
|
|
|
# shut the UI up
|
|
|
quiet = self.ui.quiet
|
|
|
self.ui.quiet = True
|
|
|
fout, ferr = self.ui.fout, self.ui.ferr
|
|
|
self.ui.fout = self.ui.ferr = open(os.devnull, 'wb')
|
|
|
|
|
|
try:
|
|
|
rv2 = orig(
|
|
|
node1, node2, match, listignored, listclean, listunknown,
|
|
|
listsubrepos)
|
|
|
finally:
|
|
|
self.dirstate._fsmonitordisable = False
|
|
|
self.ui.quiet = quiet
|
|
|
self.ui.fout, self.ui.ferr = fout, ferr
|
|
|
|
|
|
# clean isn't tested since it's set to True above
|
|
|
_cmpsets([modified, added, removed, deleted, unknown, ignored, clean],
|
|
|
rv2)
|
|
|
modified, added, removed, deleted, unknown, ignored, clean = rv2
|
|
|
|
|
|
return scmutil.status(
|
|
|
modified, added, removed, deleted, unknown, ignored, clean)
|
|
|
|
|
|
class poststatus(object):
|
|
|
def __init__(self, startclock):
|
|
|
self._startclock = startclock
|
|
|
|
|
|
def __call__(self, wctx, status):
|
|
|
clock = wctx.repo()._fsmonitorstate.getlastclock() or self._startclock
|
|
|
hashignore = _hashignore(wctx.repo().dirstate._ignore)
|
|
|
notefiles = (status.modified + status.added + status.removed +
|
|
|
status.deleted + status.unknown)
|
|
|
wctx.repo()._fsmonitorstate.set(clock, hashignore, notefiles)
|
|
|
|
|
|
def makedirstate(repo, dirstate):
|
|
|
class fsmonitordirstate(dirstate.__class__):
|
|
|
def _fsmonitorinit(self, repo):
|
|
|
# _fsmonitordisable is used in paranoid mode
|
|
|
self._fsmonitordisable = False
|
|
|
self._fsmonitorstate = repo._fsmonitorstate
|
|
|
self._watchmanclient = repo._watchmanclient
|
|
|
self._repo = weakref.proxy(repo)
|
|
|
|
|
|
def walk(self, *args, **kwargs):
|
|
|
orig = super(fsmonitordirstate, self).walk
|
|
|
if self._fsmonitordisable:
|
|
|
return orig(*args, **kwargs)
|
|
|
return overridewalk(orig, self, *args, **kwargs)
|
|
|
|
|
|
def rebuild(self, *args, **kwargs):
|
|
|
self._fsmonitorstate.invalidate()
|
|
|
return super(fsmonitordirstate, self).rebuild(*args, **kwargs)
|
|
|
|
|
|
def invalidate(self, *args, **kwargs):
|
|
|
self._fsmonitorstate.invalidate()
|
|
|
return super(fsmonitordirstate, self).invalidate(*args, **kwargs)
|
|
|
|
|
|
dirstate.__class__ = fsmonitordirstate
|
|
|
dirstate._fsmonitorinit(repo)
|
|
|
|
|
|
def wrapdirstate(orig, self):
|
|
|
ds = orig(self)
|
|
|
# only override the dirstate when Watchman is available for the repo
|
|
|
if util.safehasattr(self, '_fsmonitorstate'):
|
|
|
makedirstate(self, ds)
|
|
|
return ds
|
|
|
|
|
|
def extsetup(ui):
|
|
|
extensions.wrapfilecache(
|
|
|
localrepo.localrepository, 'dirstate', wrapdirstate)
|
|
|
if pycompat.isdarwin:
|
|
|
# An assist for avoiding the dangling-symlink fsevents bug
|
|
|
extensions.wrapfunction(os, 'symlink', wrapsymlink)
|
|
|
|
|
|
extensions.wrapfunction(merge, 'update', wrapupdate)
|
|
|
|
|
|
def wrapsymlink(orig, source, link_name):
|
|
|
''' if we create a dangling symlink, also touch the parent dir
|
|
|
to encourage fsevents notifications to work more correctly '''
|
|
|
try:
|
|
|
return orig(source, link_name)
|
|
|
finally:
|
|
|
try:
|
|
|
os.utime(os.path.dirname(link_name), None)
|
|
|
except OSError:
|
|
|
pass
|
|
|
|
|
|
class state_update(object):
|
|
|
''' This context manager is responsible for dispatching the state-enter
|
|
|
and state-leave signals to the watchman service. The enter and leave
|
|
|
methods can be invoked manually (for scenarios where context manager
|
|
|
semantics are not possible). If parameters oldnode and newnode are None,
|
|
|
they will be populated based on current working copy in enter and
|
|
|
leave, respectively. Similarly, if the distance is none, it will be
|
|
|
calculated based on the oldnode and newnode in the leave method.'''
|
|
|
|
|
|
def __init__(self, repo, name, oldnode=None, newnode=None, distance=None,
|
|
|
partial=False):
|
|
|
self.repo = repo.unfiltered()
|
|
|
self.name = name
|
|
|
self.oldnode = oldnode
|
|
|
self.newnode = newnode
|
|
|
self.distance = distance
|
|
|
self.partial = partial
|
|
|
self._lock = None
|
|
|
self.need_leave = False
|
|
|
|
|
|
def __enter__(self):
|
|
|
self.enter()
|
|
|
|
|
|
def enter(self):
|
|
|
# Make sure we have a wlock prior to sending notifications to watchman.
|
|
|
# We don't want to race with other actors. In the update case,
|
|
|
# merge.update is going to take the wlock almost immediately. We are
|
|
|
# effectively extending the lock around several short sanity checks.
|
|
|
if self.oldnode is None:
|
|
|
self.oldnode = self.repo['.'].node()
|
|
|
|
|
|
if self.repo.currentwlock() is None:
|
|
|
if util.safehasattr(self.repo, 'wlocknostateupdate'):
|
|
|
self._lock = self.repo.wlocknostateupdate()
|
|
|
else:
|
|
|
self._lock = self.repo.wlock()
|
|
|
self.need_leave = self._state(
|
|
|
'state-enter',
|
|
|
hex(self.oldnode))
|
|
|
return self
|
|
|
|
|
|
def __exit__(self, type_, value, tb):
|
|
|
abort = True if type_ else False
|
|
|
self.exit(abort=abort)
|
|
|
|
|
|
def exit(self, abort=False):
|
|
|
try:
|
|
|
if self.need_leave:
|
|
|
status = 'failed' if abort else 'ok'
|
|
|
if self.newnode is None:
|
|
|
self.newnode = self.repo['.'].node()
|
|
|
if self.distance is None:
|
|
|
self.distance = calcdistance(
|
|
|
self.repo, self.oldnode, self.newnode)
|
|
|
self._state(
|
|
|
'state-leave',
|
|
|
hex(self.newnode),
|
|
|
status=status)
|
|
|
finally:
|
|
|
self.need_leave = False
|
|
|
if self._lock:
|
|
|
self._lock.release()
|
|
|
|
|
|
def _state(self, cmd, commithash, status='ok'):
|
|
|
if not util.safehasattr(self.repo, '_watchmanclient'):
|
|
|
return False
|
|
|
try:
|
|
|
self.repo._watchmanclient.command(cmd, {
|
|
|
'name': self.name,
|
|
|
'metadata': {
|
|
|
# the target revision
|
|
|
'rev': commithash,
|
|
|
# approximate number of commits between current and target
|
|
|
'distance': self.distance if self.distance else 0,
|
|
|
# success/failure (only really meaningful for state-leave)
|
|
|
'status': status,
|
|
|
# whether the working copy parent is changing
|
|
|
'partial': self.partial,
|
|
|
}})
|
|
|
return True
|
|
|
except Exception as e:
|
|
|
# Swallow any errors; fire and forget
|
|
|
self.repo.ui.log(
|
|
|
'watchman', 'Exception %s while running %s\n', e, cmd)
|
|
|
return False
|
|
|
|
|
|
# Estimate the distance between two nodes
|
|
|
def calcdistance(repo, oldnode, newnode):
|
|
|
anc = repo.changelog.ancestor(oldnode, newnode)
|
|
|
ancrev = repo[anc].rev()
|
|
|
distance = (abs(repo[oldnode].rev() - ancrev)
|
|
|
+ abs(repo[newnode].rev() - ancrev))
|
|
|
return distance
|
|
|
|
|
|
# Bracket working copy updates with calls to the watchman state-enter
|
|
|
# and state-leave commands. This allows clients to perform more intelligent
|
|
|
# settling during bulk file change scenarios
|
|
|
# https://facebook.github.io/watchman/docs/cmd/subscribe.html#advanced-settling
|
|
|
def wrapupdate(orig, repo, node, branchmerge, force, ancestor=None,
|
|
|
mergeancestor=False, labels=None, matcher=None, **kwargs):
|
|
|
|
|
|
distance = 0
|
|
|
partial = True
|
|
|
oldnode = repo['.'].node()
|
|
|
newnode = repo[node].node()
|
|
|
if matcher is None or matcher.always():
|
|
|
partial = False
|
|
|
distance = calcdistance(repo.unfiltered(), oldnode, newnode)
|
|
|
|
|
|
with state_update(repo, name="hg.update", oldnode=oldnode, newnode=newnode,
|
|
|
distance=distance, partial=partial):
|
|
|
return orig(
|
|
|
repo, node, branchmerge, force, ancestor, mergeancestor,
|
|
|
labels, matcher, **kwargs)
|
|
|
|
|
|
def reposetup(ui, repo):
|
|
|
# We don't work with largefiles or inotify
|
|
|
exts = extensions.enabled()
|
|
|
for ext in _blacklist:
|
|
|
if ext in exts:
|
|
|
ui.warn(_('The fsmonitor extension is incompatible with the %s '
|
|
|
'extension and has been disabled.\n') % ext)
|
|
|
return
|
|
|
|
|
|
if repo.local():
|
|
|
# We don't work with subrepos either.
|
|
|
#
|
|
|
# if repo[None].substate can cause a dirstate parse, which is too
|
|
|
# slow. Instead, look for a file called hgsubstate,
|
|
|
if repo.wvfs.exists('.hgsubstate') or repo.wvfs.exists('.hgsub'):
|
|
|
return
|
|
|
|
|
|
fsmonitorstate = state.state(repo)
|
|
|
if fsmonitorstate.mode == 'off':
|
|
|
return
|
|
|
|
|
|
try:
|
|
|
client = watchmanclient.client(repo)
|
|
|
except Exception as ex:
|
|
|
_handleunavailable(ui, fsmonitorstate, ex)
|
|
|
return
|
|
|
|
|
|
repo._fsmonitorstate = fsmonitorstate
|
|
|
repo._watchmanclient = client
|
|
|
|
|
|
dirstate, cached = localrepo.isfilecached(repo, 'dirstate')
|
|
|
if cached:
|
|
|
# at this point since fsmonitorstate wasn't present,
|
|
|
# repo.dirstate is not a fsmonitordirstate
|
|
|
makedirstate(repo, dirstate)
|
|
|
|
|
|
class fsmonitorrepo(repo.__class__):
|
|
|
def status(self, *args, **kwargs):
|
|
|
orig = super(fsmonitorrepo, self).status
|
|
|
return overridestatus(orig, self, *args, **kwargs)
|
|
|
|
|
|
def wlocknostateupdate(self, *args, **kwargs):
|
|
|
return super(fsmonitorrepo, self).wlock(*args, **kwargs)
|
|
|
|
|
|
def wlock(self, *args, **kwargs):
|
|
|
l = super(fsmonitorrepo, self).wlock(*args, **kwargs)
|
|
|
if not ui.configbool(
|
|
|
"experimental", "fsmonitor.transaction_notify"):
|
|
|
return l
|
|
|
if l.held != 1:
|
|
|
return l
|
|
|
origrelease = l.releasefn
|
|
|
|
|
|
def staterelease():
|
|
|
if origrelease:
|
|
|
origrelease()
|
|
|
if l.stateupdate:
|
|
|
l.stateupdate.exit()
|
|
|
l.stateupdate = None
|
|
|
|
|
|
try:
|
|
|
l.stateupdate = None
|
|
|
l.stateupdate = state_update(self, name="hg.transaction")
|
|
|
l.stateupdate.enter()
|
|
|
l.releasefn = staterelease
|
|
|
except Exception as e:
|
|
|
# Swallow any errors; fire and forget
|
|
|
self.ui.log(
|
|
|
'watchman', 'Exception in state update %s\n', e)
|
|
|
return l
|
|
|
|
|
|
repo.__class__ = fsmonitorrepo
|
|
|
|
