|
|
# server.py - common entry point for inotify status server
|
|
|
#
|
|
|
# Copyright 2009 Nicolas Dumazet <nicdumz@gmail.com>
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
|
|
from mercurial.i18n import _
|
|
|
from mercurial import cmdutil, osutil, util
|
|
|
import common
|
|
|
|
|
|
import errno
|
|
|
import os
|
|
|
import socket
|
|
|
import stat
|
|
|
import struct
|
|
|
import sys
|
|
|
import tempfile
|
|
|
|
|
|
class AlreadyStartedException(Exception):
|
|
|
pass
|
|
|
class TimeoutException(Exception):
|
|
|
pass
|
|
|
|
|
|
def join(a, b):
|
|
|
if a:
|
|
|
if a[-1] == '/':
|
|
|
return a + b
|
|
|
return a + '/' + b
|
|
|
return b
|
|
|
|
|
|
def split(path):
|
|
|
c = path.rfind('/')
|
|
|
if c == -1:
|
|
|
return '', path
|
|
|
return path[:c], path[c + 1:]
|
|
|
|
|
|
walk_ignored_errors = (errno.ENOENT, errno.ENAMETOOLONG)
|
|
|
|
|
|
def walk(dirstate, absroot, root):
|
|
|
'''Like os.walk, but only yields regular files.'''
|
|
|
|
|
|
# This function is critical to performance during startup.
|
|
|
|
|
|
def walkit(root, reporoot):
|
|
|
files, dirs = [], []
|
|
|
|
|
|
try:
|
|
|
fullpath = join(absroot, root)
|
|
|
for name, kind in osutil.listdir(fullpath):
|
|
|
if kind == stat.S_IFDIR:
|
|
|
if name == '.hg':
|
|
|
if not reporoot:
|
|
|
return
|
|
|
else:
|
|
|
dirs.append(name)
|
|
|
path = join(root, name)
|
|
|
if dirstate._ignore(path):
|
|
|
continue
|
|
|
for result in walkit(path, False):
|
|
|
yield result
|
|
|
elif kind in (stat.S_IFREG, stat.S_IFLNK):
|
|
|
files.append(name)
|
|
|
yield fullpath, dirs, files
|
|
|
|
|
|
except OSError, err:
|
|
|
if err.errno == errno.ENOTDIR:
|
|
|
# fullpath was a directory, but has since been replaced
|
|
|
# by a file.
|
|
|
yield fullpath, dirs, files
|
|
|
elif err.errno not in walk_ignored_errors:
|
|
|
raise
|
|
|
|
|
|
return walkit(root, root == '')
|
|
|
|
|
|
class directory(object):
|
|
|
"""
|
|
|
Representing a directory
|
|
|
|
|
|
* path is the relative path from repo root to this directory
|
|
|
* files is a dict listing the files in this directory
|
|
|
- keys are file names
|
|
|
- values are file status
|
|
|
* dirs is a dict listing the subdirectories
|
|
|
- key are subdirectories names
|
|
|
- values are directory objects
|
|
|
"""
|
|
|
def __init__(self, relpath=''):
|
|
|
self.path = relpath
|
|
|
self.files = {}
|
|
|
self.dirs = {}
|
|
|
|
|
|
def dir(self, relpath):
|
|
|
"""
|
|
|
Returns the directory contained at the relative path relpath.
|
|
|
Creates the intermediate directories if necessary.
|
|
|
"""
|
|
|
if not relpath:
|
|
|
return self
|
|
|
l = relpath.split('/')
|
|
|
ret = self
|
|
|
while l:
|
|
|
next = l.pop(0)
|
|
|
try:
|
|
|
ret = ret.dirs[next]
|
|
|
except KeyError:
|
|
|
d = directory(join(ret.path, next))
|
|
|
ret.dirs[next] = d
|
|
|
ret = d
|
|
|
return ret
|
|
|
|
|
|
def walk(self, states, visited=None):
|
|
|
"""
|
|
|
yield (filename, status) pairs for items in the trees
|
|
|
that have status in states.
|
|
|
filenames are relative to the repo root
|
|
|
"""
|
|
|
for file, st in self.files.iteritems():
|
|
|
if st in states:
|
|
|
yield join(self.path, file), st
|
|
|
for dir in self.dirs.itervalues():
|
|
|
if visited is not None:
|
|
|
visited.add(dir.path)
|
|
|
for e in dir.walk(states):
|
|
|
yield e
|
|
|
|
|
|
def lookup(self, states, path, visited):
|
|
|
"""
|
|
|
yield root-relative filenames that match path, and whose
|
|
|
status are in states:
|
|
|
* if path is a file, yield path
|
|
|
* if path is a directory, yield directory files
|
|
|
* if path is not tracked, yield nothing
|
|
|
"""
|
|
|
if path[-1] == '/':
|
|
|
path = path[:-1]
|
|
|
|
|
|
paths = path.split('/')
|
|
|
|
|
|
# we need to check separately for last node
|
|
|
last = paths.pop()
|
|
|
|
|
|
tree = self
|
|
|
try:
|
|
|
for dir in paths:
|
|
|
tree = tree.dirs[dir]
|
|
|
except KeyError:
|
|
|
# path is not tracked
|
|
|
visited.add(tree.path)
|
|
|
return
|
|
|
|
|
|
try:
|
|
|
# if path is a directory, walk it
|
|
|
target = tree.dirs[last]
|
|
|
visited.add(target.path)
|
|
|
for file, st in target.walk(states, visited):
|
|
|
yield file
|
|
|
except KeyError:
|
|
|
try:
|
|
|
if tree.files[last] in states:
|
|
|
# path is a file
|
|
|
visited.add(tree.path)
|
|
|
yield path
|
|
|
except KeyError:
|
|
|
# path is not tracked
|
|
|
pass
|
|
|
|
|
|
class repowatcher(object):
|
|
|
"""
|
|
|
Watches inotify events
|
|
|
"""
|
|
|
statuskeys = 'almr!?'
|
|
|
|
|
|
def __init__(self, ui, dirstate, root):
|
|
|
self.ui = ui
|
|
|
self.dirstate = dirstate
|
|
|
|
|
|
self.wprefix = join(root, '')
|
|
|
self.prefixlen = len(self.wprefix)
|
|
|
|
|
|
self.tree = directory()
|
|
|
self.statcache = {}
|
|
|
self.statustrees = dict([(s, directory()) for s in self.statuskeys])
|
|
|
|
|
|
self.ds_info = self.dirstate_info()
|
|
|
|
|
|
self.last_event = None
|
|
|
|
|
|
|
|
|
def handle_timeout(self):
|
|
|
pass
|
|
|
|
|
|
def dirstate_info(self):
|
|
|
try:
|
|
|
st = os.lstat(self.wprefix + '.hg/dirstate')
|
|
|
return st.st_mtime, st.st_ino
|
|
|
except OSError, err:
|
|
|
if err.errno != errno.ENOENT:
|
|
|
raise
|
|
|
return 0, 0
|
|
|
|
|
|
def filestatus(self, fn, st):
|
|
|
try:
|
|
|
type_, mode, size, time = self.dirstate._map[fn][:4]
|
|
|
except KeyError:
|
|
|
type_ = '?'
|
|
|
if type_ == 'n':
|
|
|
st_mode, st_size, st_mtime = st
|
|
|
if size == -1:
|
|
|
return 'l'
|
|
|
if size and (size != st_size or (mode ^ st_mode) & 0100):
|
|
|
return 'm'
|
|
|
if time != int(st_mtime):
|
|
|
return 'l'
|
|
|
return 'n'
|
|
|
if type_ == '?' and self.dirstate._dirignore(fn):
|
|
|
# we must check not only if the file is ignored, but if any part
|
|
|
# of its path match an ignore pattern
|
|
|
return 'i'
|
|
|
return type_
|
|
|
|
|
|
def updatefile(self, wfn, osstat):
|
|
|
'''
|
|
|
update the file entry of an existing file.
|
|
|
|
|
|
osstat: (mode, size, time) tuple, as returned by os.lstat(wfn)
|
|
|
'''
|
|
|
|
|
|
self._updatestatus(wfn, self.filestatus(wfn, osstat))
|
|
|
|
|
|
def deletefile(self, wfn, oldstatus):
|
|
|
'''
|
|
|
update the entry of a file which has been deleted.
|
|
|
|
|
|
oldstatus: char in statuskeys, status of the file before deletion
|
|
|
'''
|
|
|
if oldstatus == 'r':
|
|
|
newstatus = 'r'
|
|
|
elif oldstatus in 'almn':
|
|
|
newstatus = '!'
|
|
|
else:
|
|
|
newstatus = None
|
|
|
|
|
|
self.statcache.pop(wfn, None)
|
|
|
self._updatestatus(wfn, newstatus)
|
|
|
|
|
|
def _updatestatus(self, wfn, newstatus):
|
|
|
'''
|
|
|
Update the stored status of a file.
|
|
|
|
|
|
newstatus: - char in (statuskeys + 'ni'), new status to apply.
|
|
|
- or None, to stop tracking wfn
|
|
|
'''
|
|
|
root, fn = split(wfn)
|
|
|
d = self.tree.dir(root)
|
|
|
|
|
|
oldstatus = d.files.get(fn)
|
|
|
# oldstatus can be either:
|
|
|
# - None : fn is new
|
|
|
# - a char in statuskeys: fn is a (tracked) file
|
|
|
|
|
|
if self.ui.debugflag and oldstatus != newstatus:
|
|
|
self.ui.note(_('status: %r %s -> %s\n') %
|
|
|
(wfn, oldstatus, newstatus))
|
|
|
|
|
|
if oldstatus and oldstatus in self.statuskeys \
|
|
|
and oldstatus != newstatus:
|
|
|
del self.statustrees[oldstatus].dir(root).files[fn]
|
|
|
|
|
|
if newstatus in (None, 'i'):
|
|
|
d.files.pop(fn, None)
|
|
|
elif oldstatus != newstatus:
|
|
|
d.files[fn] = newstatus
|
|
|
if newstatus != 'n':
|
|
|
self.statustrees[newstatus].dir(root).files[fn] = newstatus
|
|
|
|
|
|
def check_deleted(self, key):
|
|
|
# Files that had been deleted but were present in the dirstate
|
|
|
# may have vanished from the dirstate; we must clean them up.
|
|
|
nuke = []
|
|
|
for wfn, ignore in self.statustrees[key].walk(key):
|
|
|
if wfn not in self.dirstate:
|
|
|
nuke.append(wfn)
|
|
|
for wfn in nuke:
|
|
|
root, fn = split(wfn)
|
|
|
del self.statustrees[key].dir(root).files[fn]
|
|
|
del self.tree.dir(root).files[fn]
|
|
|
|
|
|
def update_hgignore(self):
|
|
|
# An update of the ignore file can potentially change the
|
|
|
# states of all unknown and ignored files.
|
|
|
|
|
|
# XXX If the user has other ignore files outside the repo, or
|
|
|
# changes their list of ignore files at run time, we'll
|
|
|
# potentially never see changes to them. We could get the
|
|
|
# client to report to us what ignore data they're using.
|
|
|
# But it's easier to do nothing than to open that can of
|
|
|
# worms.
|
|
|
|
|
|
if '_ignore' in self.dirstate.__dict__:
|
|
|
delattr(self.dirstate, '_ignore')
|
|
|
self.ui.note(_('rescanning due to .hgignore change\n'))
|
|
|
self.handle_timeout()
|
|
|
self.scan()
|
|
|
|
|
|
def getstat(self, wpath):
|
|
|
try:
|
|
|
return self.statcache[wpath]
|
|
|
except KeyError:
|
|
|
try:
|
|
|
return self.stat(wpath)
|
|
|
except OSError, err:
|
|
|
if err.errno != errno.ENOENT:
|
|
|
raise
|
|
|
|
|
|
def stat(self, wpath):
|
|
|
try:
|
|
|
st = os.lstat(join(self.wprefix, wpath))
|
|
|
ret = st.st_mode, st.st_size, st.st_mtime
|
|
|
self.statcache[wpath] = ret
|
|
|
return ret
|
|
|
except OSError:
|
|
|
self.statcache.pop(wpath, None)
|
|
|
raise
|
|
|
|
|
|
class socketlistener(object):
|
|
|
"""
|
|
|
Listens for client queries on unix socket inotify.sock
|
|
|
"""
|
|
|
def __init__(self, ui, root, repowatcher, timeout):
|
|
|
self.ui = ui
|
|
|
self.repowatcher = repowatcher
|
|
|
self.sock = socket.socket(socket.AF_UNIX)
|
|
|
self.sockpath = join(root, '.hg/inotify.sock')
|
|
|
self.realsockpath = None
|
|
|
try:
|
|
|
self.sock.bind(self.sockpath)
|
|
|
except socket.error, err:
|
|
|
if err.args[0] == errno.EADDRINUSE:
|
|
|
raise AlreadyStartedException(_('cannot start: socket is '
|
|
|
'already bound'))
|
|
|
if err.args[0] == "AF_UNIX path too long":
|
|
|
if os.path.islink(self.sockpath) and \
|
|
|
not os.path.exists(self.sockpath):
|
|
|
raise util.Abort('inotify-server: cannot start: '
|
|
|
'.hg/inotify.sock is a broken symlink')
|
|
|
tempdir = tempfile.mkdtemp(prefix="hg-inotify-")
|
|
|
self.realsockpath = os.path.join(tempdir, "inotify.sock")
|
|
|
try:
|
|
|
self.sock.bind(self.realsockpath)
|
|
|
os.symlink(self.realsockpath, self.sockpath)
|
|
|
except (OSError, socket.error), inst:
|
|
|
try:
|
|
|
os.unlink(self.realsockpath)
|
|
|
except:
|
|
|
pass
|
|
|
os.rmdir(tempdir)
|
|
|
if inst.errno == errno.EEXIST:
|
|
|
raise AlreadyStartedException(_('cannot start: tried '
|
|
|
'linking .hg/inotify.sock to a temporary socket but'
|
|
|
' .hg/inotify.sock already exists'))
|
|
|
raise
|
|
|
else:
|
|
|
raise
|
|
|
self.sock.listen(5)
|
|
|
self.fileno = self.sock.fileno
|
|
|
|
|
|
def answer_stat_query(self, cs):
|
|
|
names = cs.read().split('\0')
|
|
|
|
|
|
states = names.pop()
|
|
|
|
|
|
self.ui.note(_('answering query for %r\n') % states)
|
|
|
|
|
|
visited = set()
|
|
|
if not names:
|
|
|
def genresult(states, tree):
|
|
|
for fn, state in tree.walk(states):
|
|
|
yield fn
|
|
|
else:
|
|
|
def genresult(states, tree):
|
|
|
for fn in names:
|
|
|
for f in tree.lookup(states, fn, visited):
|
|
|
yield f
|
|
|
|
|
|
return ['\0'.join(r) for r in [
|
|
|
genresult('l', self.repowatcher.statustrees['l']),
|
|
|
genresult('m', self.repowatcher.statustrees['m']),
|
|
|
genresult('a', self.repowatcher.statustrees['a']),
|
|
|
genresult('r', self.repowatcher.statustrees['r']),
|
|
|
genresult('!', self.repowatcher.statustrees['!']),
|
|
|
'?' in states
|
|
|
and genresult('?', self.repowatcher.statustrees['?'])
|
|
|
or [],
|
|
|
[],
|
|
|
'c' in states and genresult('n', self.repowatcher.tree) or [],
|
|
|
visited
|
|
|
]]
|
|
|
|
|
|
def answer_dbug_query(self):
|
|
|
return ['\0'.join(self.repowatcher.debug())]
|
|
|
|
|
|
def accept_connection(self):
|
|
|
sock, addr = self.sock.accept()
|
|
|
|
|
|
cs = common.recvcs(sock)
|
|
|
version = ord(cs.read(1))
|
|
|
|
|
|
if version != common.version:
|
|
|
self.ui.warn(_('received query from incompatible client '
|
|
|
'version %d\n') % version)
|
|
|
try:
|
|
|
# try to send back our version to the client
|
|
|
# this way, the client too is informed of the mismatch
|
|
|
sock.sendall(chr(common.version))
|
|
|
except:
|
|
|
pass
|
|
|
return
|
|
|
|
|
|
type = cs.read(4)
|
|
|
|
|
|
if type == 'STAT':
|
|
|
results = self.answer_stat_query(cs)
|
|
|
elif type == 'DBUG':
|
|
|
results = self.answer_dbug_query()
|
|
|
else:
|
|
|
self.ui.warn(_('unrecognized query type: %s\n') % type)
|
|
|
return
|
|
|
|
|
|
try:
|
|
|
try:
|
|
|
v = chr(common.version)
|
|
|
|
|
|
sock.sendall(v + type + struct.pack(common.resphdrfmts[type],
|
|
|
*map(len, results)))
|
|
|
sock.sendall(''.join(results))
|
|
|
finally:
|
|
|
sock.shutdown(socket.SHUT_WR)
|
|
|
except socket.error, err:
|
|
|
if err.args[0] != errno.EPIPE:
|
|
|
raise
|
|
|
|
|
|
if sys.platform == 'linux2':
|
|
|
import linuxserver as _server
|
|
|
else:
|
|
|
raise ImportError
|
|
|
|
|
|
master = _server.master
|
|
|
|
|
|
def start(ui, dirstate, root, opts):
|
|
|
timeout = opts.get('idle_timeout')
|
|
|
if timeout:
|
|
|
timeout = float(timeout) * 60000
|
|
|
else:
|
|
|
timeout = None
|
|
|
|
|
|
class service(object):
|
|
|
def init(self):
|
|
|
try:
|
|
|
self.master = master(ui, dirstate, root, timeout)
|
|
|
except AlreadyStartedException, inst:
|
|
|
raise util.Abort("inotify-server: %s" % inst)
|
|
|
|
|
|
def run(self):
|
|
|
try:
|
|
|
try:
|
|
|
self.master.run()
|
|
|
except TimeoutException:
|
|
|
pass
|
|
|
finally:
|
|
|
self.master.shutdown()
|
|
|
|
|
|
if 'inserve' not in sys.argv:
|
|
|
runargs = util.hgcmd() + ['inserve', '-R', root]
|
|
|
else:
|
|
|
runargs = util.hgcmd() + sys.argv[1:]
|
|
|
|
|
|
pidfile = ui.config('inotify', 'pidfile')
|
|
|
if opts['daemon'] and pidfile is not None and 'pid-file' not in runargs:
|
|
|
runargs.append("--pid-file=%s" % pidfile)
|
|
|
|
|
|
service = service()
|
|
|
logfile = ui.config('inotify', 'log')
|
|
|
|
|
|
appendpid = ui.configbool('inotify', 'appendpid', False)
|
|
|
|
|
|
ui.debug('starting inotify server: %s\n' % ' '.join(runargs))
|
|
|
cmdutil.service(opts, initfn=service.init, runfn=service.run,
|
|
|
logfile=logfile, runargs=runargs, appendpid=appendpid)
|
|
|
|
