##// END OF EJS Templates
wireproto: don't expose legacy commands to version 2 of wire protocol...
wireproto: don't expose legacy commands to version 2 of wire protocol Now that we have the ability to control which transports a wire protocol command is exposed on, let's put it to use. We flag the "branches," "changegroup," and "changegroupsubset" commands as only available on version 1. "branches" was used by the legacy discovery mechanism and was replaced by the "known" and "heads" commands. "changegroup" and "changegroupsubset" were replaced by "getbundle." "between" is also legacy. However, since it is used by the SSH handshake protocol, marking it as legacy is a bit more complicated and will be done in a later commit. Another nuanced issue with this change is that the server-advertised capabilities still list "changegroupsubset" despite the command not being available. This will be addressed in a subsequent commit. Differential Revision: https://phab.mercurial-scm.org/D2485

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state.py
134 lines | 4.4 KiB | text/x-python | PythonLexer
# state.py - fsmonitor persistent state
#
# 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.
from __future__ import absolute_import
import errno
import os
import socket
import struct
from mercurial.i18n import _
from mercurial import (
pathutil,
util,
)
_version = 4
_versionformat = ">I"
class state(object):
def __init__(self, repo):
self._vfs = repo.vfs
self._ui = repo.ui
self._rootdir = pathutil.normasprefix(repo.root)
self._lastclock = None
self._identity = util.filestat(None)
self.mode = self._ui.config('fsmonitor', 'mode')
self.walk_on_invalidate = self._ui.configbool(
'fsmonitor', 'walk_on_invalidate')
self.timeout = float(self._ui.config('fsmonitor', 'timeout'))
def get(self):
try:
file = self._vfs('fsmonitor.state', 'rb')
except IOError as inst:
self._identity = util.filestat(None)
if inst.errno != errno.ENOENT:
raise
return None, None, None
self._identity = util.filestat.fromfp(file)
versionbytes = file.read(4)
if len(versionbytes) < 4:
self._ui.log(
'fsmonitor', 'fsmonitor: state file only has %d bytes, '
'nuking state\n' % len(versionbytes))
self.invalidate()
return None, None, None
try:
diskversion = struct.unpack(_versionformat, versionbytes)[0]
if diskversion != _version:
# different version, nuke state and start over
self._ui.log(
'fsmonitor', 'fsmonitor: version switch from %d to '
'%d, nuking state\n' % (diskversion, _version))
self.invalidate()
return None, None, None
state = file.read().split('\0')
# state = hostname\0clock\0ignorehash\0 + list of files, each
# followed by a \0
if len(state) < 3:
self._ui.log(
'fsmonitor', 'fsmonitor: state file truncated (expected '
'3 chunks, found %d), nuking state\n', len(state))
self.invalidate()
return None, None, None
diskhostname = state[0]
hostname = socket.gethostname()
if diskhostname != hostname:
# file got moved to a different host
self._ui.log('fsmonitor', 'fsmonitor: stored hostname "%s" '
'different from current "%s", nuking state\n' %
(diskhostname, hostname))
self.invalidate()
return None, None, None
clock = state[1]
ignorehash = state[2]
# discard the value after the last \0
notefiles = state[3:-1]
finally:
file.close()
return clock, ignorehash, notefiles
def set(self, clock, ignorehash, notefiles):
if clock is None:
self.invalidate()
return
# Read the identity from the file on disk rather than from the open file
# pointer below, because the latter is actually a brand new file.
identity = util.filestat.frompath(self._vfs.join('fsmonitor.state'))
if identity != self._identity:
self._ui.debug('skip updating fsmonitor.state: identity mismatch\n')
return
try:
file = self._vfs('fsmonitor.state', 'wb', atomictemp=True,
checkambig=True)
except (IOError, OSError):
self._ui.warn(_("warning: unable to write out fsmonitor state\n"))
return
with file:
file.write(struct.pack(_versionformat, _version))
file.write(socket.gethostname() + '\0')
file.write(clock + '\0')
file.write(ignorehash + '\0')
if notefiles:
file.write('\0'.join(notefiles))
file.write('\0')
def invalidate(self):
try:
os.unlink(os.path.join(self._rootdir, '.hg', 'fsmonitor.state'))
except OSError as inst:
if inst.errno != errno.ENOENT:
raise
self._identity = util.filestat(None)
def setlastclock(self, clock):
self._lastclock = clock
def getlastclock(self):
return self._lastclock