Mercurial > public > mercurial-scm > hg
annotate hgext/inotify/server.py @ 7420:b4ac1e2cd38c
inotify: remove unused imports (thanks pyflakes)
| author | Brendan Cully <brendan@kublai.com> |
|---|---|
| date | Tue, 25 Nov 2008 18:45:08 -0800 |
| parents | 5ab0abf27dd9 |
| children | fca9947652ce |
| rev | line source |
|---|---|
| 6239 | 1 # server.py - inotify status server |
| 2 # | |
| 3 # Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com> | |
| 4 # Copyright 2007, 2008 Brendan Cully <brendan@kublai.com> | |
| 5 # | |
| 6 # This software may be used and distributed according to the terms | |
| 7 # of the GNU General Public License, incorporated herein by reference. | |
| 8 | |
|
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9 from mercurial.i18n import _ |
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inotify: remove unused imports (thanks pyflakes)
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10 from mercurial import osutil, util |
| 6239 | 11 import common |
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12 import errno, os, select, socket, stat, struct, sys, tempfile, time |
| 6239 | 13 |
| 14 try: | |
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15 import linux as inotify |
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16 from linux import watcher |
| 6239 | 17 except ImportError: |
| 18 raise | |
| 19 | |
| 20 class AlreadyStartedException(Exception): pass | |
| 21 | |
| 22 def join(a, b): | |
| 23 if a: | |
| 24 if a[-1] == '/': | |
| 25 return a + b | |
| 26 return a + '/' + b | |
| 27 return b | |
| 28 | |
| 29 walk_ignored_errors = (errno.ENOENT, errno.ENAMETOOLONG) | |
| 30 | |
| 31 def walkrepodirs(repo): | |
| 32 '''Iterate over all subdirectories of this repo. | |
| 33 Exclude the .hg directory, any nested repos, and ignored dirs.''' | |
| 34 rootslash = repo.root + os.sep | |
| 35 def walkit(dirname, top): | |
| 36 hginside = False | |
| 37 try: | |
| 38 for name, kind in osutil.listdir(rootslash + dirname): | |
| 39 if kind == stat.S_IFDIR: | |
| 40 if name == '.hg': | |
| 41 hginside = True | |
| 42 if not top: break | |
| 43 else: | |
| 44 d = join(dirname, name) | |
| 45 if repo.dirstate._ignore(d): | |
| 46 continue | |
| 47 for subdir, hginsub in walkit(d, False): | |
| 48 if not hginsub: | |
| 49 yield subdir, False | |
| 50 except OSError, err: | |
| 51 if err.errno not in walk_ignored_errors: | |
| 52 raise | |
| 53 yield rootslash + dirname, hginside | |
| 54 for dirname, hginside in walkit('', True): | |
| 55 yield dirname | |
| 56 | |
| 57 def walk(repo, root): | |
| 58 '''Like os.walk, but only yields regular files.''' | |
| 59 | |
| 60 # This function is critical to performance during startup. | |
| 61 | |
| 62 reporoot = root == '' | |
| 63 rootslash = repo.root + os.sep | |
| 64 | |
| 65 def walkit(root, reporoot): | |
| 66 files, dirs = [], [] | |
| 67 hginside = False | |
| 68 | |
| 69 try: | |
| 70 fullpath = rootslash + root | |
| 71 for name, kind in osutil.listdir(fullpath): | |
| 72 if kind == stat.S_IFDIR: | |
| 73 if name == '.hg': | |
| 74 hginside = True | |
| 75 if reporoot: | |
| 76 continue | |
| 77 else: | |
| 78 break | |
| 79 dirs.append(name) | |
| 80 elif kind in (stat.S_IFREG, stat.S_IFLNK): | |
| 81 path = join(root, name) | |
| 82 files.append((name, kind)) | |
| 83 | |
| 84 yield hginside, fullpath, dirs, files | |
| 85 | |
| 86 for subdir in dirs: | |
| 87 path = join(root, subdir) | |
| 88 if repo.dirstate._ignore(path): | |
| 89 continue | |
| 90 for result in walkit(path, False): | |
| 91 if not result[0]: | |
| 92 yield result | |
| 93 except OSError, err: | |
| 94 if err.errno not in walk_ignored_errors: | |
| 95 raise | |
| 96 for result in walkit(root, reporoot): | |
| 97 yield result[1:] | |
| 98 | |
| 99 def _explain_watch_limit(ui, repo, count): | |
| 100 path = '/proc/sys/fs/inotify/max_user_watches' | |
| 101 try: | |
| 102 limit = int(file(path).read()) | |
| 103 except IOError, err: | |
| 104 if err.errno != errno.ENOENT: | |
| 105 raise | |
| 106 raise util.Abort(_('this system does not seem to ' | |
| 107 'support inotify')) | |
| 108 ui.warn(_('*** the current per-user limit on the number ' | |
| 109 'of inotify watches is %s\n') % limit) | |
| 110 ui.warn(_('*** this limit is too low to watch every ' | |
| 111 'directory in this repository\n')) | |
| 112 ui.warn(_('*** counting directories: ')) | |
| 113 ndirs = len(list(walkrepodirs(repo))) | |
| 114 ui.warn(_('found %d\n') % ndirs) | |
| 115 newlimit = min(limit, 1024) | |
| 116 while newlimit < ((limit + ndirs) * 1.1): | |
| 117 newlimit *= 2 | |
| 118 ui.warn(_('*** to raise the limit from %d to %d (run as root):\n') % | |
| 119 (limit, newlimit)) | |
| 120 ui.warn(_('*** echo %d > %s\n') % (newlimit, path)) | |
| 121 raise util.Abort(_('cannot watch %s until inotify watch limit is raised') | |
| 122 % repo.root) | |
| 123 | |
| 124 class Watcher(object): | |
| 125 poll_events = select.POLLIN | |
| 126 statuskeys = 'almr!?' | |
| 127 | |
| 128 def __init__(self, ui, repo, master): | |
| 129 self.ui = ui | |
| 130 self.repo = repo | |
| 131 self.wprefix = self.repo.wjoin('') | |
| 132 self.timeout = None | |
| 133 self.master = master | |
| 134 self.mask = ( | |
| 135 inotify.IN_ATTRIB | | |
| 136 inotify.IN_CREATE | | |
| 137 inotify.IN_DELETE | | |
| 138 inotify.IN_DELETE_SELF | | |
| 139 inotify.IN_MODIFY | | |
| 140 inotify.IN_MOVED_FROM | | |
| 141 inotify.IN_MOVED_TO | | |
| 142 inotify.IN_MOVE_SELF | | |
| 143 inotify.IN_ONLYDIR | | |
| 144 inotify.IN_UNMOUNT | | |
| 145 0) | |
| 146 try: | |
| 147 self.watcher = watcher.Watcher() | |
| 148 except OSError, err: | |
| 149 raise util.Abort(_('inotify service not available: %s') % | |
| 150 err.strerror) | |
| 151 self.threshold = watcher.Threshold(self.watcher) | |
| 152 self.registered = True | |
| 153 self.fileno = self.watcher.fileno | |
| 154 | |
| 155 self.repo.dirstate.__class__.inotifyserver = True | |
| 156 | |
| 157 self.tree = {} | |
| 158 self.statcache = {} | |
| 159 self.statustrees = dict([(s, {}) for s in self.statuskeys]) | |
| 160 | |
| 161 self.watches = 0 | |
| 162 self.last_event = None | |
| 163 | |
| 164 self.eventq = {} | |
| 165 self.deferred = 0 | |
| 166 | |
| 167 self.ds_info = self.dirstate_info() | |
| 168 self.scan() | |
| 169 | |
| 170 def event_time(self): | |
| 171 last = self.last_event | |
| 172 now = time.time() | |
| 173 self.last_event = now | |
| 174 | |
| 175 if last is None: | |
| 176 return 'start' | |
| 177 delta = now - last | |
| 178 if delta < 5: | |
| 179 return '+%.3f' % delta | |
| 180 if delta < 50: | |
| 181 return '+%.2f' % delta | |
| 182 return '+%.1f' % delta | |
| 183 | |
| 184 def dirstate_info(self): | |
| 185 try: | |
| 186 st = os.lstat(self.repo.join('dirstate')) | |
| 187 return st.st_mtime, st.st_ino | |
| 188 except OSError, err: | |
| 189 if err.errno != errno.ENOENT: | |
| 190 raise | |
| 191 return 0, 0 | |
| 192 | |
| 193 def add_watch(self, path, mask): | |
| 194 if not path: | |
| 195 return | |
| 196 if self.watcher.path(path) is None: | |
| 197 if self.ui.debugflag: | |
| 198 self.ui.note(_('watching %r\n') % path[len(self.wprefix):]) | |
| 199 try: | |
| 200 self.watcher.add(path, mask) | |
| 201 self.watches += 1 | |
| 202 except OSError, err: | |
| 203 if err.errno in (errno.ENOENT, errno.ENOTDIR): | |
| 204 return | |
| 205 if err.errno != errno.ENOSPC: | |
| 206 raise | |
| 207 _explain_watch_limit(self.ui, self.repo, self.watches) | |
| 208 | |
| 209 def setup(self): | |
| 210 self.ui.note(_('watching directories under %r\n') % self.repo.root) | |
| 211 self.add_watch(self.repo.path, inotify.IN_DELETE) | |
| 212 self.check_dirstate() | |
| 213 | |
| 214 def wpath(self, evt): | |
| 215 path = evt.fullpath | |
| 216 if path == self.repo.root: | |
| 217 return '' | |
| 218 if path.startswith(self.wprefix): | |
| 219 return path[len(self.wprefix):] | |
| 220 raise 'wtf? ' + path | |
| 221 | |
| 222 def dir(self, tree, path): | |
| 223 if path: | |
| 224 for name in path.split('/'): | |
|
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225 tree.setdefault(name, {}) |
| 6239 | 226 tree = tree[name] |
| 227 return tree | |
| 228 | |
| 229 def lookup(self, path, tree): | |
| 230 if path: | |
| 231 try: | |
| 232 for name in path.split('/'): | |
| 233 tree = tree[name] | |
| 234 except KeyError: | |
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235 return 'x' |
| 6239 | 236 except TypeError: |
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237 return 'd' |
| 6239 | 238 return tree |
| 239 | |
| 240 def split(self, path): | |
| 241 c = path.rfind('/') | |
| 242 if c == -1: | |
| 243 return '', path | |
| 244 return path[:c], path[c+1:] | |
| 245 | |
| 246 def filestatus(self, fn, st): | |
| 247 try: | |
| 248 type_, mode, size, time = self.repo.dirstate._map[fn][:4] | |
| 249 except KeyError: | |
| 250 type_ = '?' | |
| 251 if type_ == 'n': | |
| 252 if not st: | |
| 253 return '!' | |
| 254 st_mode, st_size, st_mtime = st | |
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255 if size == -1: |
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256 return 'l' |
| 6239 | 257 if size and (size != st_size or (mode ^ st_mode) & 0100): |
| 258 return 'm' | |
| 259 if time != int(st_mtime): | |
| 260 return 'l' | |
| 261 return 'n' | |
| 262 if type_ in 'ma' and not st: | |
| 263 return '!' | |
| 264 if type_ == '?' and self.repo.dirstate._ignore(fn): | |
| 265 return 'i' | |
| 266 return type_ | |
| 267 | |
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268 def updatestatus(self, wfn, st=None, status=None): |
| 6239 | 269 if st: |
| 270 status = self.filestatus(wfn, st) | |
| 271 else: | |
| 272 self.statcache.pop(wfn, None) | |
| 273 root, fn = self.split(wfn) | |
| 274 d = self.dir(self.tree, root) | |
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275 oldstatus = d.get(fn) |
| 6239 | 276 isdir = False |
| 277 if oldstatus: | |
| 278 try: | |
| 279 if not status: | |
| 280 if oldstatus in 'almn': | |
| 281 status = '!' | |
| 282 elif oldstatus == 'r': | |
| 283 status = 'r' | |
| 284 except TypeError: | |
| 285 # oldstatus may be a dict left behind by a deleted | |
| 286 # directory | |
| 287 isdir = True | |
| 288 else: | |
| 289 if oldstatus in self.statuskeys and oldstatus != status: | |
| 290 del self.dir(self.statustrees[oldstatus], root)[fn] | |
| 291 if self.ui.debugflag and oldstatus != status: | |
| 292 if isdir: | |
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293 self.ui.note(_('status: %r dir(%d) -> %s\n') % |
| 6239 | 294 (wfn, len(oldstatus), status)) |
| 295 else: | |
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296 self.ui.note(_('status: %r %s -> %s\n') % |
| 6239 | 297 (wfn, oldstatus, status)) |
| 298 if not isdir: | |
| 299 if status and status != 'i': | |
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300 d[fn] = status |
| 6239 | 301 if status in self.statuskeys: |
| 302 dd = self.dir(self.statustrees[status], root) | |
| 303 if oldstatus != status or fn not in dd: | |
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304 dd[fn] = status |
| 6239 | 305 else: |
| 306 d.pop(fn, None) | |
| 307 | |
| 308 def check_deleted(self, key): | |
| 309 # Files that had been deleted but were present in the dirstate | |
| 310 # may have vanished from the dirstate; we must clean them up. | |
| 311 nuke = [] | |
| 312 for wfn, ignore in self.walk(key, self.statustrees[key]): | |
| 313 if wfn not in self.repo.dirstate: | |
| 314 nuke.append(wfn) | |
| 315 for wfn in nuke: | |
| 316 root, fn = self.split(wfn) | |
| 317 del self.dir(self.statustrees[key], root)[fn] | |
| 318 del self.dir(self.tree, root)[fn] | |
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319 |
| 6239 | 320 def scan(self, topdir=''): |
| 321 self.handle_timeout() | |
| 322 ds = self.repo.dirstate._map.copy() | |
| 323 self.add_watch(join(self.repo.root, topdir), self.mask) | |
| 324 for root, dirs, entries in walk(self.repo, topdir): | |
| 325 for d in dirs: | |
| 326 self.add_watch(join(root, d), self.mask) | |
| 327 wroot = root[len(self.wprefix):] | |
| 328 d = self.dir(self.tree, wroot) | |
| 329 for fn, kind in entries: | |
| 330 wfn = join(wroot, fn) | |
| 331 self.updatestatus(wfn, self.getstat(wfn)) | |
| 332 ds.pop(wfn, None) | |
| 333 wtopdir = topdir | |
| 334 if wtopdir and wtopdir[-1] != '/': | |
| 335 wtopdir += '/' | |
| 336 for wfn, state in ds.iteritems(): | |
| 337 if not wfn.startswith(wtopdir): | |
| 338 continue | |
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339 try: |
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340 st = self.stat(wfn) |
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341 except OSError: |
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342 status = state[0] |
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343 self.updatestatus(wfn, None, status=status) |
| 6239 | 344 else: |
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345 self.updatestatus(wfn, st) |
| 6239 | 346 self.check_deleted('!') |
| 347 self.check_deleted('r') | |
| 348 | |
| 349 def check_dirstate(self): | |
| 350 ds_info = self.dirstate_info() | |
| 351 if ds_info == self.ds_info: | |
| 352 return | |
| 353 self.ds_info = ds_info | |
| 354 if not self.ui.debugflag: | |
| 355 self.last_event = None | |
| 356 self.ui.note(_('%s dirstate reload\n') % self.event_time()) | |
| 357 self.repo.dirstate.invalidate() | |
| 358 self.scan() | |
| 359 self.ui.note(_('%s end dirstate reload\n') % self.event_time()) | |
| 360 | |
| 361 def walk(self, states, tree, prefix=''): | |
| 362 # This is the "inner loop" when talking to the client. | |
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363 |
| 6239 | 364 for name, val in tree.iteritems(): |
| 365 path = join(prefix, name) | |
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366 try: |
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367 if val in states: |
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368 yield path, val |
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369 except TypeError: |
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changeset
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370 for p in self.walk(states, val, path): |
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371 yield p |
| 6239 | 372 |
| 373 def update_hgignore(self): | |
| 374 # An update of the ignore file can potentially change the | |
| 375 # states of all unknown and ignored files. | |
| 376 | |
| 377 # XXX If the user has other ignore files outside the repo, or | |
| 378 # changes their list of ignore files at run time, we'll | |
| 379 # potentially never see changes to them. We could get the | |
| 380 # client to report to us what ignore data they're using. | |
| 381 # But it's easier to do nothing than to open that can of | |
| 382 # worms. | |
| 383 | |
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384 if '_ignore' in self.repo.dirstate.__dict__: |
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385 delattr(self.repo.dirstate, '_ignore') |
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386 self.ui.note(_('rescanning due to .hgignore change\n')) |
| 6239 | 387 self.scan() |
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388 |
| 6239 | 389 def getstat(self, wpath): |
| 390 try: | |
| 391 return self.statcache[wpath] | |
| 392 except KeyError: | |
| 393 try: | |
| 394 return self.stat(wpath) | |
| 395 except OSError, err: | |
| 396 if err.errno != errno.ENOENT: | |
| 397 raise | |
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398 |
| 6239 | 399 def stat(self, wpath): |
| 400 try: | |
| 401 st = os.lstat(join(self.wprefix, wpath)) | |
| 402 ret = st.st_mode, st.st_size, st.st_mtime | |
| 403 self.statcache[wpath] = ret | |
| 404 return ret | |
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405 except OSError: |
| 6239 | 406 self.statcache.pop(wpath, None) |
| 407 raise | |
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diff
changeset
|
408 |
| 6239 | 409 def created(self, wpath): |
| 410 if wpath == '.hgignore': | |
| 411 self.update_hgignore() | |
| 412 try: | |
| 413 st = self.stat(wpath) | |
| 414 if stat.S_ISREG(st[0]): | |
| 415 self.updatestatus(wpath, st) | |
|
7280
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remove unused variables
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parents:
7220
diff
changeset
|
416 except OSError: |
| 6239 | 417 pass |
| 418 | |
| 419 def modified(self, wpath): | |
| 420 if wpath == '.hgignore': | |
| 421 self.update_hgignore() | |
| 422 try: | |
| 423 st = self.stat(wpath) | |
| 424 if stat.S_ISREG(st[0]): | |
| 425 if self.repo.dirstate[wpath] in 'lmn': | |
| 426 self.updatestatus(wpath, st) | |
| 427 except OSError: | |
| 428 pass | |
| 429 | |
| 430 def deleted(self, wpath): | |
| 431 if wpath == '.hgignore': | |
| 432 self.update_hgignore() | |
| 433 elif wpath.startswith('.hg/'): | |
| 434 if wpath == '.hg/wlock': | |
| 435 self.check_dirstate() | |
| 436 return | |
| 437 | |
| 438 self.updatestatus(wpath, None) | |
|
6287
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Spacing cleanup
Thomas Arendsen Hein <thomas@intevation.de>
parents:
6239
diff
changeset
|
439 |
| 6239 | 440 def schedule_work(self, wpath, evt): |
| 441 self.eventq.setdefault(wpath, []) | |
| 442 prev = self.eventq[wpath] | |
| 443 try: | |
| 444 if prev and evt == 'm' and prev[-1] in 'cm': | |
| 445 return | |
| 446 self.eventq[wpath].append(evt) | |
| 447 finally: | |
| 448 self.deferred += 1 | |
| 449 self.timeout = 250 | |
| 450 | |
| 451 def deferred_event(self, wpath, evt): | |
| 452 if evt == 'c': | |
| 453 self.created(wpath) | |
| 454 elif evt == 'm': | |
| 455 self.modified(wpath) | |
| 456 elif evt == 'd': | |
| 457 self.deleted(wpath) | |
|
6287
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Spacing cleanup
Thomas Arendsen Hein <thomas@intevation.de>
parents:
6239
diff
changeset
|
458 |
| 6239 | 459 def process_create(self, wpath, evt): |
| 460 if self.ui.debugflag: | |
| 461 self.ui.note(_('%s event: created %s\n') % | |
| 462 (self.event_time(), wpath)) | |
| 463 | |
| 464 if evt.mask & inotify.IN_ISDIR: | |
| 465 self.scan(wpath) | |
| 466 else: | |
| 467 self.schedule_work(wpath, 'c') | |
| 468 | |
| 469 def process_delete(self, wpath, evt): | |
| 470 if self.ui.debugflag: | |
|
6961
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i18n: mark strings for translation in inotify extension
Martin Geisler <mg@daimi.au.dk>
parents:
6909
diff
changeset
|
471 self.ui.note(_('%s event: deleted %s\n') % |
| 6239 | 472 (self.event_time(), wpath)) |
| 473 | |
| 474 if evt.mask & inotify.IN_ISDIR: | |
| 475 self.scan(wpath) | |
| 476 else: | |
| 477 self.schedule_work(wpath, 'd') | |
| 478 | |
| 479 def process_modify(self, wpath, evt): | |
| 480 if self.ui.debugflag: | |
| 481 self.ui.note(_('%s event: modified %s\n') % | |
| 482 (self.event_time(), wpath)) | |
| 483 | |
| 484 if not (evt.mask & inotify.IN_ISDIR): | |
| 485 self.schedule_work(wpath, 'm') | |
| 486 | |
| 487 def process_unmount(self, evt): | |
| 488 self.ui.warn(_('filesystem containing %s was unmounted\n') % | |
| 489 evt.fullpath) | |
| 490 sys.exit(0) | |
| 491 | |
| 492 def handle_event(self, fd, event): | |
| 493 if self.ui.debugflag: | |
|
6961
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i18n: mark strings for translation in inotify extension
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parents:
6909
diff
changeset
|
494 self.ui.note(_('%s readable: %d bytes\n') % |
| 6239 | 495 (self.event_time(), self.threshold.readable())) |
| 496 if not self.threshold(): | |
| 497 if self.registered: | |
| 498 if self.ui.debugflag: | |
|
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i18n: mark strings for translation in inotify extension
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parents:
6909
diff
changeset
|
499 self.ui.note(_('%s below threshold - unhooking\n') % |
| 6239 | 500 (self.event_time())) |
| 501 self.master.poll.unregister(fd) | |
| 502 self.registered = False | |
| 503 self.timeout = 250 | |
| 504 else: | |
| 505 self.read_events() | |
| 506 | |
| 507 def read_events(self, bufsize=None): | |
| 508 events = self.watcher.read(bufsize) | |
| 509 if self.ui.debugflag: | |
|
6961
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i18n: mark strings for translation in inotify extension
Martin Geisler <mg@daimi.au.dk>
parents:
6909
diff
changeset
|
510 self.ui.note(_('%s reading %d events\n') % |
| 6239 | 511 (self.event_time(), len(events))) |
| 512 for evt in events: | |
| 513 wpath = self.wpath(evt) | |
| 514 if evt.mask & inotify.IN_UNMOUNT: | |
| 515 self.process_unmount(wpath, evt) | |
| 516 elif evt.mask & (inotify.IN_MODIFY | inotify.IN_ATTRIB): | |
| 517 self.process_modify(wpath, evt) | |
| 518 elif evt.mask & (inotify.IN_DELETE | inotify.IN_DELETE_SELF | | |
| 519 inotify.IN_MOVED_FROM): | |
| 520 self.process_delete(wpath, evt) | |
| 521 elif evt.mask & (inotify.IN_CREATE | inotify.IN_MOVED_TO): | |
| 522 self.process_create(wpath, evt) | |
| 523 | |
| 524 def handle_timeout(self): | |
| 525 if not self.registered: | |
| 526 if self.ui.debugflag: | |
|
6961
12163fb21fce
i18n: mark strings for translation in inotify extension
Martin Geisler <mg@daimi.au.dk>
parents:
6909
diff
changeset
|
527 self.ui.note(_('%s hooking back up with %d bytes readable\n') % |
| 6239 | 528 (self.event_time(), self.threshold.readable())) |
| 529 self.read_events(0) | |
| 530 self.master.poll.register(self, select.POLLIN) | |
| 531 self.registered = True | |
| 532 | |
| 533 if self.eventq: | |
| 534 if self.ui.debugflag: | |
|
6961
12163fb21fce
i18n: mark strings for translation in inotify extension
Martin Geisler <mg@daimi.au.dk>
parents:
6909
diff
changeset
|
535 self.ui.note(_('%s processing %d deferred events as %d\n') % |
| 6239 | 536 (self.event_time(), self.deferred, |
| 537 len(self.eventq))) | |
| 6762 | 538 for wpath, evts in util.sort(self.eventq.items()): |
| 6239 | 539 for evt in evts: |
| 540 self.deferred_event(wpath, evt) | |
| 541 self.eventq.clear() | |
| 542 self.deferred = 0 | |
| 543 self.timeout = None | |
| 544 | |
| 545 def shutdown(self): | |
| 546 self.watcher.close() | |
| 547 | |
| 548 class Server(object): | |
| 549 poll_events = select.POLLIN | |
| 550 | |
| 551 def __init__(self, ui, repo, watcher, timeout): | |
| 552 self.ui = ui | |
| 553 self.repo = repo | |
| 554 self.watcher = watcher | |
| 555 self.timeout = timeout | |
| 556 self.sock = socket.socket(socket.AF_UNIX) | |
| 557 self.sockpath = self.repo.join('inotify.sock') | |
|
6997
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
558 self.realsockpath = None |
| 6239 | 559 try: |
| 560 self.sock.bind(self.sockpath) | |
| 561 except socket.error, err: | |
| 562 if err[0] == errno.EADDRINUSE: | |
|
6997
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
563 raise AlreadyStartedException(_('could not start server: %s') |
| 6239 | 564 % err[1]) |
|
6997
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
565 if err[0] == "AF_UNIX path too long": |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
566 tempdir = tempfile.mkdtemp(prefix="hg-inotify-") |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
567 self.realsockpath = os.path.join(tempdir, "inotify.sock") |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
568 try: |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
569 self.sock.bind(self.realsockpath) |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
570 os.symlink(self.realsockpath, self.sockpath) |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
571 except (OSError, socket.error), inst: |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
572 try: |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
573 os.unlink(self.realsockpath) |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
574 except: |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
575 pass |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
576 os.rmdir(tempdir) |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
577 if inst.errno == errno.EEXIST: |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
578 raise AlreadyStartedException(_('could not start server: %s') |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
579 % inst.strerror) |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
580 raise |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
581 else: |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
582 raise |
| 6239 | 583 self.sock.listen(5) |
| 584 self.fileno = self.sock.fileno | |
| 585 | |
| 586 def handle_timeout(self): | |
| 587 pass | |
| 588 | |
| 589 def handle_event(self, fd, event): | |
| 590 sock, addr = self.sock.accept() | |
| 591 | |
| 592 cs = common.recvcs(sock) | |
| 593 version = ord(cs.read(1)) | |
| 594 | |
| 595 sock.sendall(chr(common.version)) | |
| 596 | |
| 597 if version != common.version: | |
| 598 self.ui.warn(_('received query from incompatible client ' | |
| 599 'version %d\n') % version) | |
| 600 return | |
| 601 | |
| 602 names = cs.read().split('\0') | |
|
6287
c86207d41512
Spacing cleanup
Thomas Arendsen Hein <thomas@intevation.de>
parents:
6239
diff
changeset
|
603 |
| 6239 | 604 states = names.pop() |
| 605 | |
| 606 self.ui.note(_('answering query for %r\n') % states) | |
| 607 | |
| 608 if self.watcher.timeout: | |
| 609 # We got a query while a rescan is pending. Make sure we | |
| 610 # rescan before responding, or we could give back a wrong | |
| 611 # answer. | |
| 612 self.watcher.handle_timeout() | |
| 613 | |
| 614 if not names: | |
| 615 def genresult(states, tree): | |
| 616 for fn, state in self.watcher.walk(states, tree): | |
| 617 yield fn | |
| 618 else: | |
| 619 def genresult(states, tree): | |
| 620 for fn in names: | |
| 621 l = self.watcher.lookup(fn, tree) | |
|
7351
5ab0abf27dd9
Backed out changeset c5dbe86b0fee (issue1375)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
7350
diff
changeset
|
622 try: |
|
5ab0abf27dd9
Backed out changeset c5dbe86b0fee (issue1375)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
7350
diff
changeset
|
623 if l in states: |
|
5ab0abf27dd9
Backed out changeset c5dbe86b0fee (issue1375)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
7350
diff
changeset
|
624 yield fn |
|
5ab0abf27dd9
Backed out changeset c5dbe86b0fee (issue1375)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
7350
diff
changeset
|
625 except TypeError: |
|
5ab0abf27dd9
Backed out changeset c5dbe86b0fee (issue1375)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
7350
diff
changeset
|
626 for f, s in self.watcher.walk(states, l, fn): |
|
5ab0abf27dd9
Backed out changeset c5dbe86b0fee (issue1375)
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
7350
diff
changeset
|
627 yield f |
| 6239 | 628 |
| 629 results = ['\0'.join(r) for r in [ | |
| 630 genresult('l', self.watcher.statustrees['l']), | |
| 631 genresult('m', self.watcher.statustrees['m']), | |
| 632 genresult('a', self.watcher.statustrees['a']), | |
| 633 genresult('r', self.watcher.statustrees['r']), | |
| 634 genresult('!', self.watcher.statustrees['!']), | |
| 635 '?' in states and genresult('?', self.watcher.statustrees['?']) or [], | |
| 636 [], | |
| 637 'c' in states and genresult('n', self.watcher.tree) or [], | |
| 638 ]] | |
| 639 | |
| 640 try: | |
| 641 try: | |
| 642 sock.sendall(struct.pack(common.resphdrfmt, | |
| 643 *map(len, results))) | |
| 644 sock.sendall(''.join(results)) | |
| 645 finally: | |
| 646 sock.shutdown(socket.SHUT_WR) | |
| 647 except socket.error, err: | |
| 648 if err[0] != errno.EPIPE: | |
| 649 raise | |
| 650 | |
| 651 def shutdown(self): | |
| 652 self.sock.close() | |
| 653 try: | |
| 654 os.unlink(self.sockpath) | |
|
6997
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
655 if self.realsockpath: |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
656 os.unlink(self.realsockpath) |
|
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
657 os.rmdir(os.path.dirname(self.realsockpath)) |
| 6239 | 658 except OSError, err: |
| 659 if err.errno != errno.ENOENT: | |
| 660 raise | |
| 661 | |
| 662 class Master(object): | |
| 663 def __init__(self, ui, repo, timeout=None): | |
| 664 self.ui = ui | |
| 665 self.repo = repo | |
| 666 self.poll = select.poll() | |
| 667 self.watcher = Watcher(ui, repo, self) | |
| 668 self.server = Server(ui, repo, self.watcher, timeout) | |
| 669 self.table = {} | |
| 670 for obj in (self.watcher, self.server): | |
| 671 fd = obj.fileno() | |
| 672 self.table[fd] = obj | |
| 673 self.poll.register(fd, obj.poll_events) | |
| 674 | |
| 675 def register(self, fd, mask): | |
| 676 self.poll.register(fd, mask) | |
| 677 | |
| 678 def shutdown(self): | |
| 679 for obj in self.table.itervalues(): | |
| 680 obj.shutdown() | |
| 681 | |
| 682 def run(self): | |
| 683 self.watcher.setup() | |
| 684 self.ui.note(_('finished setup\n')) | |
| 685 if os.getenv('TIME_STARTUP'): | |
| 686 sys.exit(0) | |
| 687 while True: | |
| 688 timeout = None | |
| 689 timeobj = None | |
| 690 for obj in self.table.itervalues(): | |
| 691 if obj.timeout is not None and (timeout is None or obj.timeout < timeout): | |
| 692 timeout, timeobj = obj.timeout, obj | |
| 693 try: | |
| 694 if self.ui.debugflag: | |
| 695 if timeout is None: | |
|
6961
12163fb21fce
i18n: mark strings for translation in inotify extension
Martin Geisler <mg@daimi.au.dk>
parents:
6909
diff
changeset
|
696 self.ui.note(_('polling: no timeout\n')) |
| 6239 | 697 else: |
|
6961
12163fb21fce
i18n: mark strings for translation in inotify extension
Martin Geisler <mg@daimi.au.dk>
parents:
6909
diff
changeset
|
698 self.ui.note(_('polling: %sms timeout\n') % timeout) |
| 6239 | 699 events = self.poll.poll(timeout) |
| 700 except select.error, err: | |
| 701 if err[0] == errno.EINTR: | |
| 702 continue | |
| 703 raise | |
| 704 if events: | |
| 705 for fd, event in events: | |
| 706 self.table[fd].handle_event(fd, event) | |
| 707 elif timeobj: | |
| 708 timeobj.handle_timeout() | |
| 709 | |
| 710 def start(ui, repo): | |
| 711 m = Master(ui, repo) | |
| 712 sys.stdout.flush() | |
| 713 sys.stderr.flush() | |
| 714 | |
| 715 pid = os.fork() | |
| 716 if pid: | |
| 717 return pid | |
| 718 | |
| 719 os.setsid() | |
| 720 | |
| 721 fd = os.open('/dev/null', os.O_RDONLY) | |
| 722 os.dup2(fd, 0) | |
| 723 if fd > 0: | |
| 724 os.close(fd) | |
| 725 | |
| 726 fd = os.open(ui.config('inotify', 'log', '/dev/null'), | |
| 727 os.O_RDWR | os.O_CREAT | os.O_TRUNC) | |
| 728 os.dup2(fd, 1) | |
| 729 os.dup2(fd, 2) | |
| 730 if fd > 2: | |
| 731 os.close(fd) | |
| 732 | |
| 733 try: | |
| 734 m.run() | |
| 735 finally: | |
| 736 m.shutdown() | |
| 737 os._exit(0) |