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@@ -1,869 +1,429 b'' | |||
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1 | # server.py - inotify status server | |
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1 | # linuxserver.py - inotify status server for linux | |
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2 | 2 | # |
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3 | 3 | # Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com> |
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4 | 4 | # Copyright 2007, 2008 Brendan Cully <brendan@kublai.com> |
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5 | 5 | # |
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6 | 6 | # This software may be used and distributed according to the terms of the |
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7 | 7 | # GNU General Public License version 2, incorporated herein by reference. |
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8 | 8 | |
|
9 | 9 | from mercurial.i18n import _ |
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10 |
from mercurial import |
|
|
10 | from mercurial import osutil, util | |
|
11 | 11 | import common |
|
12 | import errno, os, select, socket, stat, struct, sys, tempfile, time | |
|
12 | import server | |
|
13 | import errno, os, select, stat, sys, time | |
|
13 | 14 | |
|
14 | 15 | try: |
|
15 | 16 | import linux as inotify |
|
16 | 17 | from linux import watcher |
|
17 | 18 | except ImportError: |
|
18 | 19 | raise |
|
19 | 20 | |
|
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 | def split(path): | |
|
30 | c = path.rfind('/') | |
|
31 | if c == -1: | |
|
32 | return '', path | |
|
33 | return path[:c], path[c+1:] | |
|
34 | ||
|
35 | walk_ignored_errors = (errno.ENOENT, errno.ENAMETOOLONG) | |
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36 | ||
|
37 | 21 | def walkrepodirs(dirstate, absroot): |
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38 | 22 | '''Iterate over all subdirectories of this repo. |
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39 | 23 | Exclude the .hg directory, any nested repos, and ignored dirs.''' |
|
40 | 24 | def walkit(dirname, top): |
|
41 | fullpath = join(absroot, dirname) | |
|
25 | fullpath = server.join(absroot, dirname) | |
|
42 | 26 | try: |
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43 | 27 | for name, kind in osutil.listdir(fullpath): |
|
44 | 28 | if kind == stat.S_IFDIR: |
|
45 | 29 | if name == '.hg': |
|
46 | 30 | if not top: |
|
47 | 31 | return |
|
48 | 32 | else: |
|
49 | d = join(dirname, name) | |
|
33 | d = server.join(dirname, name) | |
|
50 | 34 | if dirstate._ignore(d): |
|
51 | 35 | continue |
|
52 | 36 | for subdir in walkit(d, False): |
|
53 | 37 | yield subdir |
|
54 | 38 | except OSError, err: |
|
55 | if err.errno not in walk_ignored_errors: | |
|
39 | if err.errno not in server.walk_ignored_errors: | |
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56 | 40 | raise |
|
57 | 41 | yield fullpath |
|
58 | 42 | |
|
59 | 43 | return walkit('', True) |
|
60 | 44 | |
|
61 | def walk(dirstate, absroot, root): | |
|
62 | '''Like os.walk, but only yields regular files.''' | |
|
63 | ||
|
64 | # This function is critical to performance during startup. | |
|
65 | ||
|
66 | def walkit(root, reporoot): | |
|
67 | files, dirs = [], [] | |
|
68 | ||
|
69 | try: | |
|
70 | fullpath = join(absroot, root) | |
|
71 | for name, kind in osutil.listdir(fullpath): | |
|
72 | if kind == stat.S_IFDIR: | |
|
73 | if name == '.hg': | |
|
74 | if not reporoot: | |
|
75 | return | |
|
76 | else: | |
|
77 | dirs.append(name) | |
|
78 | path = join(root, name) | |
|
79 | if dirstate._ignore(path): | |
|
80 | continue | |
|
81 | for result in walkit(path, False): | |
|
82 | yield result | |
|
83 | elif kind in (stat.S_IFREG, stat.S_IFLNK): | |
|
84 | files.append(name) | |
|
85 | yield fullpath, dirs, files | |
|
86 | ||
|
87 | except OSError, err: | |
|
88 | if err.errno == errno.ENOTDIR: | |
|
89 | # fullpath was a directory, but has since been replaced | |
|
90 | # by a file. | |
|
91 | yield fullpath, dirs, files | |
|
92 | elif err.errno not in walk_ignored_errors: | |
|
93 | raise | |
|
94 | ||
|
95 | return walkit(root, root == '') | |
|
96 | ||
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97 | 45 | def _explain_watch_limit(ui, dirstate, rootabs): |
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98 | 46 | path = '/proc/sys/fs/inotify/max_user_watches' |
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99 | 47 | try: |
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100 | 48 | limit = int(file(path).read()) |
|
101 | 49 | except IOError, err: |
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102 | 50 | if err.errno != errno.ENOENT: |
|
103 | 51 | raise |
|
104 | 52 | raise util.Abort(_('this system does not seem to ' |
|
105 | 53 | 'support inotify')) |
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106 | 54 | ui.warn(_('*** the current per-user limit on the number ' |
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107 | 55 | 'of inotify watches is %s\n') % limit) |
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108 | 56 | ui.warn(_('*** this limit is too low to watch every ' |
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109 | 57 | 'directory in this repository\n')) |
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110 | 58 | ui.warn(_('*** counting directories: ')) |
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111 | 59 | ndirs = len(list(walkrepodirs(dirstate, rootabs))) |
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112 | 60 | ui.warn(_('found %d\n') % ndirs) |
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113 | 61 | newlimit = min(limit, 1024) |
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114 | 62 | while newlimit < ((limit + ndirs) * 1.1): |
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115 | 63 | newlimit *= 2 |
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116 | 64 | ui.warn(_('*** to raise the limit from %d to %d (run as root):\n') % |
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117 | 65 | (limit, newlimit)) |
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118 | 66 | ui.warn(_('*** echo %d > %s\n') % (newlimit, path)) |
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119 | 67 | raise util.Abort(_('cannot watch %s until inotify watch limit is raised') |
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120 | 68 | % rootabs) |
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121 | 69 | |
|
122 | 70 | class pollable(object): |
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123 | 71 | """ |
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124 | 72 | Interface to support polling. |
|
125 | 73 | The file descriptor returned by fileno() is registered to a polling |
|
126 | 74 | object. |
|
127 | 75 | Usage: |
|
128 | 76 | Every tick, check if an event has happened since the last tick: |
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129 | 77 | * If yes, call handle_events |
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130 | 78 | * If no, call handle_timeout |
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131 | 79 | """ |
|
132 | 80 | poll_events = select.POLLIN |
|
133 | 81 | instances = {} |
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134 | 82 | poll = select.poll() |
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135 | 83 | |
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136 | 84 | def fileno(self): |
|
137 | 85 | raise NotImplementedError |
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138 | 86 | |
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139 | 87 | def handle_events(self, events): |
|
140 | 88 | raise NotImplementedError |
|
141 | 89 | |
|
142 | 90 | def handle_timeout(self): |
|
143 | 91 | raise NotImplementedError |
|
144 | 92 | |
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145 | 93 | def shutdown(self): |
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146 | 94 | raise NotImplementedError |
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147 | 95 | |
|
148 | 96 | def register(self, timeout): |
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149 | 97 | fd = self.fileno() |
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150 | 98 | |
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151 | 99 | pollable.poll.register(fd, pollable.poll_events) |
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152 | 100 | pollable.instances[fd] = self |
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153 | 101 | |
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154 | 102 | self.registered = True |
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155 | 103 | self.timeout = timeout |
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156 | 104 | |
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157 | 105 | def unregister(self): |
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158 | 106 | pollable.poll.unregister(self) |
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159 | 107 | self.registered = False |
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160 | 108 | |
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161 | 109 | @classmethod |
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162 | 110 | def run(cls): |
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163 | 111 | while True: |
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164 | 112 | timeout = None |
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165 | 113 | timeobj = None |
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166 | 114 | for obj in cls.instances.itervalues(): |
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167 | 115 | if obj.timeout is not None and (timeout is None or obj.timeout < timeout): |
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168 | 116 | timeout, timeobj = obj.timeout, obj |
|
169 | 117 | try: |
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170 | 118 | events = cls.poll.poll(timeout) |
|
171 | 119 | except select.error, err: |
|
172 | 120 | if err[0] == errno.EINTR: |
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173 | 121 | continue |
|
174 | 122 | raise |
|
175 | 123 | if events: |
|
176 | 124 | by_fd = {} |
|
177 | 125 | for fd, event in events: |
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178 | 126 | by_fd.setdefault(fd, []).append(event) |
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179 | 127 | |
|
180 | 128 | for fd, events in by_fd.iteritems(): |
|
181 | 129 | cls.instances[fd].handle_pollevents(events) |
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182 | 130 | |
|
183 | 131 | elif timeobj: |
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184 | 132 | timeobj.handle_timeout() |
|
185 | 133 | |
|
186 | 134 | def eventaction(code): |
|
187 | 135 | """ |
|
188 | 136 | Decorator to help handle events in repowatcher |
|
189 | 137 | """ |
|
190 | 138 | def decorator(f): |
|
191 | 139 | def wrapper(self, wpath): |
|
192 | 140 | if code == 'm' and wpath in self.lastevent and \ |
|
193 | 141 | self.lastevent[wpath] in 'cm': |
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194 | 142 | return |
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195 | 143 | self.lastevent[wpath] = code |
|
196 | 144 | self.timeout = 250 |
|
197 | 145 | |
|
198 | 146 | f(self, wpath) |
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199 | 147 | |
|
200 | 148 | wrapper.func_name = f.func_name |
|
201 | 149 | return wrapper |
|
202 | 150 | return decorator |
|
203 | 151 | |
|
204 | class directory(object): | |
|
205 | """ | |
|
206 | Representing a directory | |
|
207 | ||
|
208 | * path is the relative path from repo root to this directory | |
|
209 | * files is a dict listing the files in this directory | |
|
210 | - keys are file names | |
|
211 | - values are file status | |
|
212 | * dirs is a dict listing the subdirectories | |
|
213 | - key are subdirectories names | |
|
214 | - values are directory objects | |
|
215 | """ | |
|
216 | def __init__(self, relpath=''): | |
|
217 | self.path = relpath | |
|
218 | self.files = {} | |
|
219 | self.dirs = {} | |
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220 | ||
|
221 | def dir(self, relpath): | |
|
222 | """ | |
|
223 | Returns the directory contained at the relative path relpath. | |
|
224 | Creates the intermediate directories if necessary. | |
|
225 | """ | |
|
226 | if not relpath: | |
|
227 | return self | |
|
228 | l = relpath.split('/') | |
|
229 | ret = self | |
|
230 | while l: | |
|
231 | next = l.pop(0) | |
|
232 | try: | |
|
233 | ret = ret.dirs[next] | |
|
234 | except KeyError: | |
|
235 | d = directory(join(ret.path, next)) | |
|
236 | ret.dirs[next] = d | |
|
237 | ret = d | |
|
238 | return ret | |
|
239 | ||
|
240 | def walk(self, states, visited=None): | |
|
241 | """ | |
|
242 | yield (filename, status) pairs for items in the trees | |
|
243 | that have status in states. | |
|
244 | filenames are relative to the repo root | |
|
245 | """ | |
|
246 | for file, st in self.files.iteritems(): | |
|
247 | if st in states: | |
|
248 | yield join(self.path, file), st | |
|
249 | for dir in self.dirs.itervalues(): | |
|
250 | if visited is not None: | |
|
251 | visited.add(dir.path) | |
|
252 | for e in dir.walk(states): | |
|
253 | yield e | |
|
254 | ||
|
255 | def lookup(self, states, path, visited): | |
|
256 | """ | |
|
257 | yield root-relative filenames that match path, and whose | |
|
258 | status are in states: | |
|
259 | * if path is a file, yield path | |
|
260 | * if path is a directory, yield directory files | |
|
261 | * if path is not tracked, yield nothing | |
|
262 | """ | |
|
263 | if path[-1] == '/': | |
|
264 | path = path[:-1] | |
|
265 | ||
|
266 | paths = path.split('/') | |
|
267 | ||
|
268 | # we need to check separately for last node | |
|
269 | last = paths.pop() | |
|
270 | ||
|
271 | tree = self | |
|
272 | try: | |
|
273 | for dir in paths: | |
|
274 | tree = tree.dirs[dir] | |
|
275 | except KeyError: | |
|
276 | # path is not tracked | |
|
277 | visited.add(tree.path) | |
|
278 | return | |
|
279 | ||
|
280 | try: | |
|
281 | # if path is a directory, walk it | |
|
282 | target = tree.dirs[last] | |
|
283 | visited.add(target.path) | |
|
284 | for file, st in target.walk(states, visited): | |
|
285 | yield file | |
|
286 | except KeyError: | |
|
287 | try: | |
|
288 | if tree.files[last] in states: | |
|
289 | # path is a file | |
|
290 | visited.add(tree.path) | |
|
291 | yield path | |
|
292 | except KeyError: | |
|
293 | # path is not tracked | |
|
294 | pass | |
|
295 | ||
|
296 | class repowatcher(pollable): | |
|
152 | class repowatcher(server.repowatcher, pollable): | |
|
297 | 153 | """ |
|
298 | 154 | Watches inotify events |
|
299 | 155 | """ |
|
300 | statuskeys = 'almr!?' | |
|
301 | 156 | mask = ( |
|
302 | 157 | inotify.IN_ATTRIB | |
|
303 | 158 | inotify.IN_CREATE | |
|
304 | 159 | inotify.IN_DELETE | |
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305 | 160 | inotify.IN_DELETE_SELF | |
|
306 | 161 | inotify.IN_MODIFY | |
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307 | 162 | inotify.IN_MOVED_FROM | |
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308 | 163 | inotify.IN_MOVED_TO | |
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309 | 164 | inotify.IN_MOVE_SELF | |
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310 | 165 | inotify.IN_ONLYDIR | |
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311 | 166 | inotify.IN_UNMOUNT | |
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312 | 167 | 0) |
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313 | 168 | |
|
314 | 169 | def __init__(self, ui, dirstate, root): |
|
315 | self.ui = ui | |
|
316 | self.dirstate = dirstate | |
|
170 | server.repowatcher.__init__(self, ui, dirstate, root) | |
|
317 | 171 | |
|
318 | self.wprefix = join(root, '') | |
|
319 | self.prefixlen = len(self.wprefix) | |
|
172 | self.lastevent = {} | |
|
320 | 173 | try: |
|
321 | 174 | self.watcher = watcher.watcher() |
|
322 | 175 | except OSError, err: |
|
323 | 176 | raise util.Abort(_('inotify service not available: %s') % |
|
324 | 177 | err.strerror) |
|
325 | 178 | self.threshold = watcher.threshold(self.watcher) |
|
326 | 179 | self.fileno = self.watcher.fileno |
|
327 | ||
|
328 | self.tree = directory() | |
|
329 | self.statcache = {} | |
|
330 | self.statustrees = dict([(s, directory()) for s in self.statuskeys]) | |
|
331 | ||
|
332 | self.last_event = None | |
|
333 | ||
|
334 | self.lastevent = {} | |
|
335 | ||
|
336 | 180 | self.register(timeout=None) |
|
337 | 181 | |
|
338 | self.ds_info = self.dirstate_info() | |
|
339 | 182 | self.handle_timeout() |
|
340 | 183 | self.scan() |
|
341 | 184 | |
|
342 | 185 | def event_time(self): |
|
343 | 186 | last = self.last_event |
|
344 | 187 | now = time.time() |
|
345 | 188 | self.last_event = now |
|
346 | 189 | |
|
347 | 190 | if last is None: |
|
348 | 191 | return 'start' |
|
349 | 192 | delta = now - last |
|
350 | 193 | if delta < 5: |
|
351 | 194 | return '+%.3f' % delta |
|
352 | 195 | if delta < 50: |
|
353 | 196 | return '+%.2f' % delta |
|
354 | 197 | return '+%.1f' % delta |
|
355 | 198 | |
|
356 | def dirstate_info(self): | |
|
357 | try: | |
|
358 | st = os.lstat(self.wprefix + '.hg/dirstate') | |
|
359 | return st.st_mtime, st.st_ino | |
|
360 | except OSError, err: | |
|
361 | if err.errno != errno.ENOENT: | |
|
362 | raise | |
|
363 | return 0, 0 | |
|
364 | ||
|
365 | 199 | def add_watch(self, path, mask): |
|
366 | 200 | if not path: |
|
367 | 201 | return |
|
368 | 202 | if self.watcher.path(path) is None: |
|
369 | 203 | if self.ui.debugflag: |
|
370 | 204 | self.ui.note(_('watching %r\n') % path[self.prefixlen:]) |
|
371 | 205 | try: |
|
372 | 206 | self.watcher.add(path, mask) |
|
373 | 207 | except OSError, err: |
|
374 | 208 | if err.errno in (errno.ENOENT, errno.ENOTDIR): |
|
375 | 209 | return |
|
376 | 210 | if err.errno != errno.ENOSPC: |
|
377 | 211 | raise |
|
378 | 212 | _explain_watch_limit(self.ui, self.dirstate, self.wprefix) |
|
379 | 213 | |
|
380 | 214 | def setup(self): |
|
381 | 215 | self.ui.note(_('watching directories under %r\n') % self.wprefix) |
|
382 | 216 | self.add_watch(self.wprefix + '.hg', inotify.IN_DELETE) |
|
383 | 217 | self.check_dirstate() |
|
384 | 218 | |
|
385 | def filestatus(self, fn, st): | |
|
386 | try: | |
|
387 | type_, mode, size, time = self.dirstate._map[fn][:4] | |
|
388 | except KeyError: | |
|
389 | type_ = '?' | |
|
390 | if type_ == 'n': | |
|
391 | st_mode, st_size, st_mtime = st | |
|
392 | if size == -1: | |
|
393 | return 'l' | |
|
394 | if size and (size != st_size or (mode ^ st_mode) & 0100): | |
|
395 | return 'm' | |
|
396 | if time != int(st_mtime): | |
|
397 | return 'l' | |
|
398 | return 'n' | |
|
399 | if type_ == '?' and self.dirstate._ignore(fn): | |
|
400 | return 'i' | |
|
401 | return type_ | |
|
402 | ||
|
403 | def updatefile(self, wfn, osstat): | |
|
404 | ''' | |
|
405 | update the file entry of an existing file. | |
|
406 | ||
|
407 | osstat: (mode, size, time) tuple, as returned by os.lstat(wfn) | |
|
408 | ''' | |
|
409 | ||
|
410 | self._updatestatus(wfn, self.filestatus(wfn, osstat)) | |
|
411 | ||
|
412 | def deletefile(self, wfn, oldstatus): | |
|
413 | ''' | |
|
414 | update the entry of a file which has been deleted. | |
|
415 | ||
|
416 | oldstatus: char in statuskeys, status of the file before deletion | |
|
417 | ''' | |
|
418 | if oldstatus == 'r': | |
|
419 | newstatus = 'r' | |
|
420 | elif oldstatus in 'almn': | |
|
421 | newstatus = '!' | |
|
422 | else: | |
|
423 | newstatus = None | |
|
424 | ||
|
425 | self.statcache.pop(wfn, None) | |
|
426 | self._updatestatus(wfn, newstatus) | |
|
427 | ||
|
428 | def _updatestatus(self, wfn, newstatus): | |
|
429 | ''' | |
|
430 | Update the stored status of a file. | |
|
431 | ||
|
432 | newstatus: - char in (statuskeys + 'ni'), new status to apply. | |
|
433 | - or None, to stop tracking wfn | |
|
434 | ''' | |
|
435 | root, fn = split(wfn) | |
|
436 | d = self.tree.dir(root) | |
|
437 | ||
|
438 | oldstatus = d.files.get(fn) | |
|
439 | # oldstatus can be either: | |
|
440 | # - None : fn is new | |
|
441 | # - a char in statuskeys: fn is a (tracked) file | |
|
442 | ||
|
443 | if self.ui.debugflag and oldstatus != newstatus: | |
|
444 | self.ui.note(_('status: %r %s -> %s\n') % | |
|
445 | (wfn, oldstatus, newstatus)) | |
|
446 | ||
|
447 | if oldstatus and oldstatus in self.statuskeys \ | |
|
448 | and oldstatus != newstatus: | |
|
449 | del self.statustrees[oldstatus].dir(root).files[fn] | |
|
450 | ||
|
451 | if newstatus in (None, 'i'): | |
|
452 | d.files.pop(fn, None) | |
|
453 | elif oldstatus != newstatus: | |
|
454 | d.files[fn] = newstatus | |
|
455 | if newstatus != 'n': | |
|
456 | self.statustrees[newstatus].dir(root).files[fn] = newstatus | |
|
457 | ||
|
458 | ||
|
459 | def check_deleted(self, key): | |
|
460 | # Files that had been deleted but were present in the dirstate | |
|
461 | # may have vanished from the dirstate; we must clean them up. | |
|
462 | nuke = [] | |
|
463 | for wfn, ignore in self.statustrees[key].walk(key): | |
|
464 | if wfn not in self.dirstate: | |
|
465 | nuke.append(wfn) | |
|
466 | for wfn in nuke: | |
|
467 | root, fn = split(wfn) | |
|
468 | del self.statustrees[key].dir(root).files[fn] | |
|
469 | del self.tree.dir(root).files[fn] | |
|
470 | ||
|
471 | 219 | def scan(self, topdir=''): |
|
472 | 220 | ds = self.dirstate._map.copy() |
|
473 | self.add_watch(join(self.wprefix, topdir), self.mask) | |
|
474 |
for root, dirs, files in walk(self.dirstate, self.wprefix, |
|
|
221 | self.add_watch(server.join(self.wprefix, topdir), self.mask) | |
|
222 | for root, dirs, files in server.walk(self.dirstate, self.wprefix, | |
|
223 | topdir): | |
|
475 | 224 | for d in dirs: |
|
476 | self.add_watch(join(root, d), self.mask) | |
|
225 | self.add_watch(server.join(root, d), self.mask) | |
|
477 | 226 | wroot = root[self.prefixlen:] |
|
478 | 227 | for fn in files: |
|
479 | wfn = join(wroot, fn) | |
|
228 | wfn = server.join(wroot, fn) | |
|
480 | 229 | self.updatefile(wfn, self.getstat(wfn)) |
|
481 | 230 | ds.pop(wfn, None) |
|
482 | 231 | wtopdir = topdir |
|
483 | 232 | if wtopdir and wtopdir[-1] != '/': |
|
484 | 233 | wtopdir += '/' |
|
485 | 234 | for wfn, state in ds.iteritems(): |
|
486 | 235 | if not wfn.startswith(wtopdir): |
|
487 | 236 | continue |
|
488 | 237 | try: |
|
489 | 238 | st = self.stat(wfn) |
|
490 | 239 | except OSError: |
|
491 | 240 | status = state[0] |
|
492 | 241 | self.deletefile(wfn, status) |
|
493 | 242 | else: |
|
494 | 243 | self.updatefile(wfn, st) |
|
495 | 244 | self.check_deleted('!') |
|
496 | 245 | self.check_deleted('r') |
|
497 | 246 | |
|
498 | def check_dirstate(self): | |
|
499 | ds_info = self.dirstate_info() | |
|
500 | if ds_info == self.ds_info: | |
|
501 | return | |
|
502 | self.ds_info = ds_info | |
|
503 | if not self.ui.debugflag: | |
|
504 | self.last_event = None | |
|
505 | self.ui.note(_('%s dirstate reload\n') % self.event_time()) | |
|
506 | self.dirstate.invalidate() | |
|
507 | self.handle_timeout() | |
|
508 | self.scan() | |
|
509 | self.ui.note(_('%s end dirstate reload\n') % self.event_time()) | |
|
510 | ||
|
511 | def update_hgignore(self): | |
|
512 | # An update of the ignore file can potentially change the | |
|
513 | # states of all unknown and ignored files. | |
|
514 | ||
|
515 | # XXX If the user has other ignore files outside the repo, or | |
|
516 | # changes their list of ignore files at run time, we'll | |
|
517 | # potentially never see changes to them. We could get the | |
|
518 | # client to report to us what ignore data they're using. | |
|
519 | # But it's easier to do nothing than to open that can of | |
|
520 | # worms. | |
|
521 | ||
|
522 | if '_ignore' in self.dirstate.__dict__: | |
|
523 | delattr(self.dirstate, '_ignore') | |
|
524 | self.ui.note(_('rescanning due to .hgignore change\n')) | |
|
525 | self.handle_timeout() | |
|
526 | self.scan() | |
|
527 | ||
|
528 | def getstat(self, wpath): | |
|
529 | try: | |
|
530 | return self.statcache[wpath] | |
|
531 | except KeyError: | |
|
532 | try: | |
|
533 | return self.stat(wpath) | |
|
534 | except OSError, err: | |
|
535 | if err.errno != errno.ENOENT: | |
|
536 | raise | |
|
537 | ||
|
538 | def stat(self, wpath): | |
|
539 | try: | |
|
540 | st = os.lstat(join(self.wprefix, wpath)) | |
|
541 | ret = st.st_mode, st.st_size, st.st_mtime | |
|
542 | self.statcache[wpath] = ret | |
|
543 | return ret | |
|
544 | except OSError: | |
|
545 | self.statcache.pop(wpath, None) | |
|
546 | raise | |
|
547 | ||
|
548 | 247 | @eventaction('c') |
|
549 | 248 | def created(self, wpath): |
|
550 | 249 | if wpath == '.hgignore': |
|
551 | 250 | self.update_hgignore() |
|
552 | 251 | try: |
|
553 | 252 | st = self.stat(wpath) |
|
554 | 253 | if stat.S_ISREG(st[0]): |
|
555 | 254 | self.updatefile(wpath, st) |
|
556 | 255 | except OSError: |
|
557 | 256 | pass |
|
558 | 257 | |
|
559 | 258 | @eventaction('m') |
|
560 | 259 | def modified(self, wpath): |
|
561 | 260 | if wpath == '.hgignore': |
|
562 | 261 | self.update_hgignore() |
|
563 | 262 | try: |
|
564 | 263 | st = self.stat(wpath) |
|
565 | 264 | if stat.S_ISREG(st[0]): |
|
566 | 265 | if self.dirstate[wpath] in 'lmn': |
|
567 | 266 | self.updatefile(wpath, st) |
|
568 | 267 | except OSError: |
|
569 | 268 | pass |
|
570 | 269 | |
|
571 | 270 | @eventaction('d') |
|
572 | 271 | def deleted(self, wpath): |
|
573 | 272 | if wpath == '.hgignore': |
|
574 | 273 | self.update_hgignore() |
|
575 | 274 | elif wpath.startswith('.hg/'): |
|
576 | 275 | if wpath == '.hg/wlock': |
|
577 | 276 | self.check_dirstate() |
|
578 | 277 | return |
|
579 | 278 | |
|
580 | 279 | self.deletefile(wpath, self.dirstate[wpath]) |
|
581 | 280 | |
|
582 | 281 | def process_create(self, wpath, evt): |
|
583 | 282 | if self.ui.debugflag: |
|
584 | 283 | self.ui.note(_('%s event: created %s\n') % |
|
585 | 284 | (self.event_time(), wpath)) |
|
586 | 285 | |
|
587 | 286 | if evt.mask & inotify.IN_ISDIR: |
|
588 | 287 | self.scan(wpath) |
|
589 | 288 | else: |
|
590 | 289 | self.created(wpath) |
|
591 | 290 | |
|
592 | 291 | def process_delete(self, wpath, evt): |
|
593 | 292 | if self.ui.debugflag: |
|
594 | 293 | self.ui.note(_('%s event: deleted %s\n') % |
|
595 | 294 | (self.event_time(), wpath)) |
|
596 | 295 | |
|
597 | 296 | if evt.mask & inotify.IN_ISDIR: |
|
598 | 297 | tree = self.tree.dir(wpath) |
|
599 | 298 | todelete = [wfn for wfn, ignore in tree.walk('?')] |
|
600 | 299 | for fn in todelete: |
|
601 | 300 | self.deletefile(fn, '?') |
|
602 | 301 | self.scan(wpath) |
|
603 | 302 | else: |
|
604 | 303 | self.deleted(wpath) |
|
605 | 304 | |
|
606 | 305 | def process_modify(self, wpath, evt): |
|
607 | 306 | if self.ui.debugflag: |
|
608 | 307 | self.ui.note(_('%s event: modified %s\n') % |
|
609 | 308 | (self.event_time(), wpath)) |
|
610 | 309 | |
|
611 | 310 | if not (evt.mask & inotify.IN_ISDIR): |
|
612 | 311 | self.modified(wpath) |
|
613 | 312 | |
|
614 | 313 | def process_unmount(self, evt): |
|
615 | 314 | self.ui.warn(_('filesystem containing %s was unmounted\n') % |
|
616 | 315 | evt.fullpath) |
|
617 | 316 | sys.exit(0) |
|
618 | 317 | |
|
619 | 318 | def handle_pollevents(self, events): |
|
620 | 319 | if self.ui.debugflag: |
|
621 | 320 | self.ui.note(_('%s readable: %d bytes\n') % |
|
622 | 321 | (self.event_time(), self.threshold.readable())) |
|
623 | 322 | if not self.threshold(): |
|
624 | 323 | if self.registered: |
|
625 | 324 | if self.ui.debugflag: |
|
626 | 325 | self.ui.note(_('%s below threshold - unhooking\n') % |
|
627 | 326 | (self.event_time())) |
|
628 | 327 | self.unregister() |
|
629 | 328 | self.timeout = 250 |
|
630 | 329 | else: |
|
631 | 330 | self.read_events() |
|
632 | 331 | |
|
633 | 332 | def read_events(self, bufsize=None): |
|
634 | 333 | events = self.watcher.read(bufsize) |
|
635 | 334 | if self.ui.debugflag: |
|
636 | 335 | self.ui.note(_('%s reading %d events\n') % |
|
637 | 336 | (self.event_time(), len(events))) |
|
638 | 337 | for evt in events: |
|
639 | 338 | assert evt.fullpath.startswith(self.wprefix) |
|
640 | 339 | wpath = evt.fullpath[self.prefixlen:] |
|
641 | 340 | |
|
642 | 341 | # paths have been normalized, wpath never ends with a '/' |
|
643 | 342 | |
|
644 | 343 | if wpath.startswith('.hg/') and evt.mask & inotify.IN_ISDIR: |
|
645 | 344 | # ignore subdirectories of .hg/ (merge, patches...) |
|
646 | 345 | continue |
|
647 | 346 | |
|
648 | 347 | if evt.mask & inotify.IN_UNMOUNT: |
|
649 | 348 | self.process_unmount(wpath, evt) |
|
650 | 349 | elif evt.mask & (inotify.IN_MODIFY | inotify.IN_ATTRIB): |
|
651 | 350 | self.process_modify(wpath, evt) |
|
652 | 351 | elif evt.mask & (inotify.IN_DELETE | inotify.IN_DELETE_SELF | |
|
653 | 352 | inotify.IN_MOVED_FROM): |
|
654 | 353 | self.process_delete(wpath, evt) |
|
655 | 354 | elif evt.mask & (inotify.IN_CREATE | inotify.IN_MOVED_TO): |
|
656 | 355 | self.process_create(wpath, evt) |
|
657 | 356 | |
|
658 | 357 | self.lastevent.clear() |
|
659 | 358 | |
|
660 | 359 | def handle_timeout(self): |
|
661 | 360 | if not self.registered: |
|
662 | 361 | if self.ui.debugflag: |
|
663 | 362 | self.ui.note(_('%s hooking back up with %d bytes readable\n') % |
|
664 | 363 | (self.event_time(), self.threshold.readable())) |
|
665 | 364 | self.read_events(0) |
|
666 | 365 | self.register(timeout=None) |
|
667 | 366 | |
|
668 | 367 | self.timeout = None |
|
669 | 368 | |
|
670 | 369 | def shutdown(self): |
|
671 | 370 | self.watcher.close() |
|
672 | 371 | |
|
673 | 372 | def debug(self): |
|
674 | 373 | """ |
|
675 | 374 | Returns a sorted list of relatives paths currently watched, |
|
676 | 375 | for debugging purposes. |
|
677 | 376 | """ |
|
678 | 377 | return sorted(tuple[0][self.prefixlen:] for tuple in self.watcher) |
|
679 | 378 | |
|
680 | class server(pollable): | |
|
379 | class socketlistener(server.socketlistener, pollable): | |
|
681 | 380 | """ |
|
682 | 381 | Listens for client queries on unix socket inotify.sock |
|
683 | 382 | """ |
|
684 | 383 | def __init__(self, ui, root, repowatcher, timeout): |
|
685 | self.ui = ui | |
|
686 | self.repowatcher = repowatcher | |
|
687 | self.sock = socket.socket(socket.AF_UNIX) | |
|
688 | self.sockpath = join(root, '.hg/inotify.sock') | |
|
689 | self.realsockpath = None | |
|
690 | try: | |
|
691 | self.sock.bind(self.sockpath) | |
|
692 | except socket.error, err: | |
|
693 | if err[0] == errno.EADDRINUSE: | |
|
694 | raise AlreadyStartedException( _('cannot start: socket is ' | |
|
695 | 'already bound')) | |
|
696 | if err[0] == "AF_UNIX path too long": | |
|
697 | if os.path.islink(self.sockpath) and \ | |
|
698 | not os.path.exists(self.sockpath): | |
|
699 | raise util.Abort('inotify-server: cannot start: ' | |
|
700 | '.hg/inotify.sock is a broken symlink') | |
|
701 | tempdir = tempfile.mkdtemp(prefix="hg-inotify-") | |
|
702 | self.realsockpath = os.path.join(tempdir, "inotify.sock") | |
|
703 | try: | |
|
704 | self.sock.bind(self.realsockpath) | |
|
705 | os.symlink(self.realsockpath, self.sockpath) | |
|
706 | except (OSError, socket.error), inst: | |
|
707 | try: | |
|
708 | os.unlink(self.realsockpath) | |
|
709 | except: | |
|
710 | pass | |
|
711 | os.rmdir(tempdir) | |
|
712 | if inst.errno == errno.EEXIST: | |
|
713 | raise AlreadyStartedException(_('cannot start: tried ' | |
|
714 | 'linking .hg/inotify.sock to a temporary socket but' | |
|
715 | ' .hg/inotify.sock already exists')) | |
|
716 | raise | |
|
717 | else: | |
|
718 | raise | |
|
719 | self.sock.listen(5) | |
|
720 | self.fileno = self.sock.fileno | |
|
384 | server.socketlistener.__init__(self, ui, root, repowatcher, timeout) | |
|
721 | 385 | self.register(timeout=timeout) |
|
722 | 386 | |
|
723 | 387 | def handle_timeout(self): |
|
724 | 388 | pass |
|
725 | 389 | |
|
726 | def answer_stat_query(self, cs): | |
|
727 | names = cs.read().split('\0') | |
|
728 | ||
|
729 | states = names.pop() | |
|
730 | ||
|
731 | self.ui.note(_('answering query for %r\n') % states) | |
|
732 | ||
|
733 | if self.repowatcher.timeout: | |
|
734 | # We got a query while a rescan is pending. Make sure we | |
|
735 | # rescan before responding, or we could give back a wrong | |
|
736 | # answer. | |
|
737 | self.repowatcher.handle_timeout() | |
|
738 | ||
|
739 | visited = set() | |
|
740 | if not names: | |
|
741 | def genresult(states, tree): | |
|
742 | for fn, state in tree.walk(states): | |
|
743 | yield fn | |
|
744 | else: | |
|
745 | def genresult(states, tree): | |
|
746 | for fn in names: | |
|
747 | for f in tree.lookup(states, fn, visited): | |
|
748 | yield f | |
|
749 | ||
|
750 | return ['\0'.join(r) for r in [ | |
|
751 | genresult('l', self.repowatcher.statustrees['l']), | |
|
752 | genresult('m', self.repowatcher.statustrees['m']), | |
|
753 | genresult('a', self.repowatcher.statustrees['a']), | |
|
754 | genresult('r', self.repowatcher.statustrees['r']), | |
|
755 | genresult('!', self.repowatcher.statustrees['!']), | |
|
756 | '?' in states | |
|
757 | and genresult('?', self.repowatcher.statustrees['?']) | |
|
758 | or [], | |
|
759 | [], | |
|
760 | 'c' in states and genresult('n', self.repowatcher.tree) or [], | |
|
761 | visited | |
|
762 | ]] | |
|
763 | ||
|
764 | def answer_dbug_query(self): | |
|
765 | return ['\0'.join(self.repowatcher.debug())] | |
|
766 | ||
|
767 | 390 | def handle_pollevents(self, events): |
|
768 | 391 | for e in events: |
|
769 |
self. |
|
|
770 | ||
|
771 | def handle_pollevent(self): | |
|
772 | sock, addr = self.sock.accept() | |
|
773 | ||
|
774 | cs = common.recvcs(sock) | |
|
775 | version = ord(cs.read(1)) | |
|
776 | ||
|
777 | if version != common.version: | |
|
778 | self.ui.warn(_('received query from incompatible client ' | |
|
779 | 'version %d\n') % version) | |
|
780 | try: | |
|
781 | # try to send back our version to the client | |
|
782 | # this way, the client too is informed of the mismatch | |
|
783 | sock.sendall(chr(common.version)) | |
|
784 | except: | |
|
785 | pass | |
|
786 | return | |
|
787 | ||
|
788 | type = cs.read(4) | |
|
789 | ||
|
790 | if type == 'STAT': | |
|
791 | results = self.answer_stat_query(cs) | |
|
792 | elif type == 'DBUG': | |
|
793 | results = self.answer_dbug_query() | |
|
794 | else: | |
|
795 | self.ui.warn(_('unrecognized query type: %s\n') % type) | |
|
796 | return | |
|
797 | ||
|
798 | try: | |
|
799 | try: | |
|
800 | v = chr(common.version) | |
|
801 | ||
|
802 | sock.sendall(v + type + struct.pack(common.resphdrfmts[type], | |
|
803 | *map(len, results))) | |
|
804 | sock.sendall(''.join(results)) | |
|
805 | finally: | |
|
806 | sock.shutdown(socket.SHUT_WR) | |
|
807 | except socket.error, err: | |
|
808 | if err[0] != errno.EPIPE: | |
|
809 | raise | |
|
392 | self.accept_connection() | |
|
810 | 393 | |
|
811 | 394 | def shutdown(self): |
|
812 | 395 | self.sock.close() |
|
813 | 396 | try: |
|
814 | 397 | os.unlink(self.sockpath) |
|
815 | 398 | if self.realsockpath: |
|
816 | 399 | os.unlink(self.realsockpath) |
|
817 | 400 | os.rmdir(os.path.dirname(self.realsockpath)) |
|
818 | 401 | except OSError, err: |
|
819 | 402 | if err.errno != errno.ENOENT: |
|
820 | 403 | raise |
|
821 | 404 | |
|
405 | def answer_stat_query(self, cs): | |
|
406 | if self.repowatcher.timeout: | |
|
407 | # We got a query while a rescan is pending. Make sure we | |
|
408 | # rescan before responding, or we could give back a wrong | |
|
409 | # answer. | |
|
410 | self.repowatcher.handle_timeout() | |
|
411 | return server.socketlistener.answer_stat_query(self, cs) | |
|
412 | ||
|
822 | 413 | class master(object): |
|
823 | 414 | def __init__(self, ui, dirstate, root, timeout=None): |
|
824 | 415 | self.ui = ui |
|
825 | 416 | self.repowatcher = repowatcher(ui, dirstate, root) |
|
826 |
self.s |
|
|
417 | self.socketlistener = socketlistener(ui, root, self.repowatcher, | |
|
418 | timeout) | |
|
827 | 419 | |
|
828 | 420 | def shutdown(self): |
|
829 | 421 | for obj in pollable.instances.itervalues(): |
|
830 | 422 | obj.shutdown() |
|
831 | 423 | |
|
832 | 424 | def run(self): |
|
833 | 425 | self.repowatcher.setup() |
|
834 | 426 | self.ui.note(_('finished setup\n')) |
|
835 | 427 | if os.getenv('TIME_STARTUP'): |
|
836 | 428 | sys.exit(0) |
|
837 | 429 | pollable.run() |
|
838 | ||
|
839 | def start(ui, dirstate, root, opts): | |
|
840 | timeout = opts.get('timeout') | |
|
841 | if timeout: | |
|
842 | timeout = float(timeout) * 1e3 | |
|
843 | ||
|
844 | class service(object): | |
|
845 | def init(self): | |
|
846 | try: | |
|
847 | self.master = master(ui, dirstate, root, timeout) | |
|
848 | except AlreadyStartedException, inst: | |
|
849 | raise util.Abort("inotify-server: %s" % inst) | |
|
850 | ||
|
851 | def run(self): | |
|
852 | try: | |
|
853 | self.master.run() | |
|
854 | finally: | |
|
855 | self.master.shutdown() | |
|
856 | ||
|
857 | if 'inserve' not in sys.argv: | |
|
858 | runargs = [sys.argv[0], 'inserve', '-R', root] | |
|
859 | else: | |
|
860 | runargs = sys.argv[:] | |
|
861 | ||
|
862 | pidfile = ui.config('inotify', 'pidfile') | |
|
863 | if opts['daemon'] and pidfile is not None and 'pid-file' not in runargs: | |
|
864 | runargs.append("--pid-file=%s" % pidfile) | |
|
865 | ||
|
866 | service = service() | |
|
867 | logfile = ui.config('inotify', 'log') | |
|
868 | cmdutil.service(opts, initfn=service.init, runfn=service.run, | |
|
869 | logfile=logfile, runargs=runargs) |
@@ -1,869 +1,486 b'' | |||
|
1 | # server.py - inotify status server | |
|
1 | # server.py - common entry point for inotify status server | |
|
2 | 2 | # |
|
3 | # Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com> | |
|
4 | # Copyright 2007, 2008 Brendan Cully <brendan@kublai.com> | |
|
3 | # Copyright 2009 Nicolas Dumazet <nicdumz@gmail.com> | |
|
5 | 4 | # |
|
6 | 5 | # This software may be used and distributed according to the terms of the |
|
7 | 6 | # GNU General Public License version 2, incorporated herein by reference. |
|
8 | 7 | |
|
9 | 8 | from mercurial.i18n import _ |
|
10 | 9 | from mercurial import cmdutil, osutil, util |
|
11 | 10 | import common |
|
12 | import errno, os, select, socket, stat, struct, sys, tempfile, time | |
|
13 | 11 | |
|
14 | try: | |
|
15 | import linux as inotify | |
|
16 | from linux import watcher | |
|
17 | except ImportError: | |
|
18 | raise | |
|
12 | import errno | |
|
13 | import os | |
|
14 | import socket | |
|
15 | import stat | |
|
16 | import struct | |
|
17 | import sys | |
|
18 | import tempfile | |
|
19 | 19 | |
|
20 | 20 | class AlreadyStartedException(Exception): pass |
|
21 | 21 | |
|
22 | 22 | def join(a, b): |
|
23 | 23 | if a: |
|
24 | 24 | if a[-1] == '/': |
|
25 | 25 | return a + b |
|
26 | 26 | return a + '/' + b |
|
27 | 27 | return b |
|
28 | 28 | |
|
29 | 29 | def split(path): |
|
30 | 30 | c = path.rfind('/') |
|
31 | 31 | if c == -1: |
|
32 | 32 | return '', path |
|
33 | 33 | return path[:c], path[c+1:] |
|
34 | 34 | |
|
35 | 35 | walk_ignored_errors = (errno.ENOENT, errno.ENAMETOOLONG) |
|
36 | 36 | |
|
37 | def walkrepodirs(dirstate, absroot): | |
|
38 | '''Iterate over all subdirectories of this repo. | |
|
39 | Exclude the .hg directory, any nested repos, and ignored dirs.''' | |
|
40 | def walkit(dirname, top): | |
|
41 | fullpath = join(absroot, dirname) | |
|
42 | try: | |
|
43 | for name, kind in osutil.listdir(fullpath): | |
|
44 | if kind == stat.S_IFDIR: | |
|
45 | if name == '.hg': | |
|
46 | if not top: | |
|
47 | return | |
|
48 | else: | |
|
49 | d = join(dirname, name) | |
|
50 | if dirstate._ignore(d): | |
|
51 | continue | |
|
52 | for subdir in walkit(d, False): | |
|
53 | yield subdir | |
|
54 | except OSError, err: | |
|
55 | if err.errno not in walk_ignored_errors: | |
|
56 | raise | |
|
57 | yield fullpath | |
|
58 | ||
|
59 | return walkit('', True) | |
|
60 | ||
|
61 | 37 | def walk(dirstate, absroot, root): |
|
62 | 38 | '''Like os.walk, but only yields regular files.''' |
|
63 | 39 | |
|
64 | 40 | # This function is critical to performance during startup. |
|
65 | 41 | |
|
66 | 42 | def walkit(root, reporoot): |
|
67 | 43 | files, dirs = [], [] |
|
68 | 44 | |
|
69 | 45 | try: |
|
70 | 46 | fullpath = join(absroot, root) |
|
71 | 47 | for name, kind in osutil.listdir(fullpath): |
|
72 | 48 | if kind == stat.S_IFDIR: |
|
73 | 49 | if name == '.hg': |
|
74 | 50 | if not reporoot: |
|
75 | 51 | return |
|
76 | 52 | else: |
|
77 | 53 | dirs.append(name) |
|
78 | 54 | path = join(root, name) |
|
79 | 55 | if dirstate._ignore(path): |
|
80 | 56 | continue |
|
81 | 57 | for result in walkit(path, False): |
|
82 | 58 | yield result |
|
83 | 59 | elif kind in (stat.S_IFREG, stat.S_IFLNK): |
|
84 | 60 | files.append(name) |
|
85 | 61 | yield fullpath, dirs, files |
|
86 | 62 | |
|
87 | 63 | except OSError, err: |
|
88 | 64 | if err.errno == errno.ENOTDIR: |
|
89 | 65 | # fullpath was a directory, but has since been replaced |
|
90 | 66 | # by a file. |
|
91 | 67 | yield fullpath, dirs, files |
|
92 | 68 | elif err.errno not in walk_ignored_errors: |
|
93 | 69 | raise |
|
94 | 70 | |
|
95 | 71 | return walkit(root, root == '') |
|
96 | 72 | |
|
97 | def _explain_watch_limit(ui, dirstate, rootabs): | |
|
98 | path = '/proc/sys/fs/inotify/max_user_watches' | |
|
99 | try: | |
|
100 | limit = int(file(path).read()) | |
|
101 | except IOError, err: | |
|
102 | if err.errno != errno.ENOENT: | |
|
103 | raise | |
|
104 | raise util.Abort(_('this system does not seem to ' | |
|
105 | 'support inotify')) | |
|
106 | ui.warn(_('*** the current per-user limit on the number ' | |
|
107 | 'of inotify watches is %s\n') % limit) | |
|
108 | ui.warn(_('*** this limit is too low to watch every ' | |
|
109 | 'directory in this repository\n')) | |
|
110 | ui.warn(_('*** counting directories: ')) | |
|
111 | ndirs = len(list(walkrepodirs(dirstate, rootabs))) | |
|
112 | ui.warn(_('found %d\n') % ndirs) | |
|
113 | newlimit = min(limit, 1024) | |
|
114 | while newlimit < ((limit + ndirs) * 1.1): | |
|
115 | newlimit *= 2 | |
|
116 | ui.warn(_('*** to raise the limit from %d to %d (run as root):\n') % | |
|
117 | (limit, newlimit)) | |
|
118 | ui.warn(_('*** echo %d > %s\n') % (newlimit, path)) | |
|
119 | raise util.Abort(_('cannot watch %s until inotify watch limit is raised') | |
|
120 | % rootabs) | |
|
121 | ||
|
122 | class pollable(object): | |
|
123 | """ | |
|
124 | Interface to support polling. | |
|
125 | The file descriptor returned by fileno() is registered to a polling | |
|
126 | object. | |
|
127 | Usage: | |
|
128 | Every tick, check if an event has happened since the last tick: | |
|
129 | * If yes, call handle_events | |
|
130 | * If no, call handle_timeout | |
|
131 | """ | |
|
132 | poll_events = select.POLLIN | |
|
133 | instances = {} | |
|
134 | poll = select.poll() | |
|
135 | ||
|
136 | def fileno(self): | |
|
137 | raise NotImplementedError | |
|
138 | ||
|
139 | def handle_events(self, events): | |
|
140 | raise NotImplementedError | |
|
141 | ||
|
142 | def handle_timeout(self): | |
|
143 | raise NotImplementedError | |
|
144 | ||
|
145 | def shutdown(self): | |
|
146 | raise NotImplementedError | |
|
147 | ||
|
148 | def register(self, timeout): | |
|
149 | fd = self.fileno() | |
|
150 | ||
|
151 | pollable.poll.register(fd, pollable.poll_events) | |
|
152 | pollable.instances[fd] = self | |
|
153 | ||
|
154 | self.registered = True | |
|
155 | self.timeout = timeout | |
|
156 | ||
|
157 | def unregister(self): | |
|
158 | pollable.poll.unregister(self) | |
|
159 | self.registered = False | |
|
160 | ||
|
161 | @classmethod | |
|
162 | def run(cls): | |
|
163 | while True: | |
|
164 | timeout = None | |
|
165 | timeobj = None | |
|
166 | for obj in cls.instances.itervalues(): | |
|
167 | if obj.timeout is not None and (timeout is None or obj.timeout < timeout): | |
|
168 | timeout, timeobj = obj.timeout, obj | |
|
169 | try: | |
|
170 | events = cls.poll.poll(timeout) | |
|
171 | except select.error, err: | |
|
172 | if err[0] == errno.EINTR: | |
|
173 | continue | |
|
174 | raise | |
|
175 | if events: | |
|
176 | by_fd = {} | |
|
177 | for fd, event in events: | |
|
178 | by_fd.setdefault(fd, []).append(event) | |
|
179 | ||
|
180 | for fd, events in by_fd.iteritems(): | |
|
181 | cls.instances[fd].handle_pollevents(events) | |
|
182 | ||
|
183 | elif timeobj: | |
|
184 | timeobj.handle_timeout() | |
|
185 | ||
|
186 | def eventaction(code): | |
|
187 | """ | |
|
188 | Decorator to help handle events in repowatcher | |
|
189 | """ | |
|
190 | def decorator(f): | |
|
191 | def wrapper(self, wpath): | |
|
192 | if code == 'm' and wpath in self.lastevent and \ | |
|
193 | self.lastevent[wpath] in 'cm': | |
|
194 | return | |
|
195 | self.lastevent[wpath] = code | |
|
196 | self.timeout = 250 | |
|
197 | ||
|
198 | f(self, wpath) | |
|
199 | ||
|
200 | wrapper.func_name = f.func_name | |
|
201 | return wrapper | |
|
202 | return decorator | |
|
203 | ||
|
204 | 73 | class directory(object): |
|
205 | 74 | """ |
|
206 | 75 | Representing a directory |
|
207 | 76 | |
|
208 | 77 | * path is the relative path from repo root to this directory |
|
209 | 78 | * files is a dict listing the files in this directory |
|
210 | 79 | - keys are file names |
|
211 | 80 | - values are file status |
|
212 | 81 | * dirs is a dict listing the subdirectories |
|
213 | 82 | - key are subdirectories names |
|
214 | 83 | - values are directory objects |
|
215 | 84 | """ |
|
216 | 85 | def __init__(self, relpath=''): |
|
217 | 86 | self.path = relpath |
|
218 | 87 | self.files = {} |
|
219 | 88 | self.dirs = {} |
|
220 | 89 | |
|
221 | 90 | def dir(self, relpath): |
|
222 | 91 | """ |
|
223 | 92 | Returns the directory contained at the relative path relpath. |
|
224 | 93 | Creates the intermediate directories if necessary. |
|
225 | 94 | """ |
|
226 | 95 | if not relpath: |
|
227 | 96 | return self |
|
228 | 97 | l = relpath.split('/') |
|
229 | 98 | ret = self |
|
230 | 99 | while l: |
|
231 | 100 | next = l.pop(0) |
|
232 | 101 | try: |
|
233 | 102 | ret = ret.dirs[next] |
|
234 | 103 | except KeyError: |
|
235 | 104 | d = directory(join(ret.path, next)) |
|
236 | 105 | ret.dirs[next] = d |
|
237 | 106 | ret = d |
|
238 | 107 | return ret |
|
239 | 108 | |
|
240 | 109 | def walk(self, states, visited=None): |
|
241 | 110 | """ |
|
242 | 111 | yield (filename, status) pairs for items in the trees |
|
243 | 112 | that have status in states. |
|
244 | 113 | filenames are relative to the repo root |
|
245 | 114 | """ |
|
246 | 115 | for file, st in self.files.iteritems(): |
|
247 | 116 | if st in states: |
|
248 | 117 | yield join(self.path, file), st |
|
249 | 118 | for dir in self.dirs.itervalues(): |
|
250 | 119 | if visited is not None: |
|
251 | 120 | visited.add(dir.path) |
|
252 | 121 | for e in dir.walk(states): |
|
253 | 122 | yield e |
|
254 | 123 | |
|
255 | 124 | def lookup(self, states, path, visited): |
|
256 | 125 | """ |
|
257 | 126 | yield root-relative filenames that match path, and whose |
|
258 | 127 | status are in states: |
|
259 | 128 | * if path is a file, yield path |
|
260 | 129 | * if path is a directory, yield directory files |
|
261 | 130 | * if path is not tracked, yield nothing |
|
262 | 131 | """ |
|
263 | 132 | if path[-1] == '/': |
|
264 | 133 | path = path[:-1] |
|
265 | 134 | |
|
266 | 135 | paths = path.split('/') |
|
267 | 136 | |
|
268 | 137 | # we need to check separately for last node |
|
269 | 138 | last = paths.pop() |
|
270 | 139 | |
|
271 | 140 | tree = self |
|
272 | 141 | try: |
|
273 | 142 | for dir in paths: |
|
274 | 143 | tree = tree.dirs[dir] |
|
275 | 144 | except KeyError: |
|
276 | 145 | # path is not tracked |
|
277 | 146 | visited.add(tree.path) |
|
278 | 147 | return |
|
279 | 148 | |
|
280 | 149 | try: |
|
281 | 150 | # if path is a directory, walk it |
|
282 | 151 | target = tree.dirs[last] |
|
283 | 152 | visited.add(target.path) |
|
284 | 153 | for file, st in target.walk(states, visited): |
|
285 | 154 | yield file |
|
286 | 155 | except KeyError: |
|
287 | 156 | try: |
|
288 | 157 | if tree.files[last] in states: |
|
289 | 158 | # path is a file |
|
290 | 159 | visited.add(tree.path) |
|
291 | 160 | yield path |
|
292 | 161 | except KeyError: |
|
293 | 162 | # path is not tracked |
|
294 | 163 | pass |
|
295 | 164 | |
|
296 |
class repowatcher( |
|
|
165 | class repowatcher(object): | |
|
297 | 166 | """ |
|
298 | 167 | Watches inotify events |
|
299 | 168 | """ |
|
300 | 169 | statuskeys = 'almr!?' |
|
301 | mask = ( | |
|
302 | inotify.IN_ATTRIB | | |
|
303 | inotify.IN_CREATE | | |
|
304 | inotify.IN_DELETE | | |
|
305 | inotify.IN_DELETE_SELF | | |
|
306 | inotify.IN_MODIFY | | |
|
307 | inotify.IN_MOVED_FROM | | |
|
308 | inotify.IN_MOVED_TO | | |
|
309 | inotify.IN_MOVE_SELF | | |
|
310 | inotify.IN_ONLYDIR | | |
|
311 | inotify.IN_UNMOUNT | | |
|
312 | 0) | |
|
313 | 170 | |
|
314 | 171 | def __init__(self, ui, dirstate, root): |
|
315 | 172 | self.ui = ui |
|
316 | 173 | self.dirstate = dirstate |
|
317 | 174 | |
|
318 | 175 | self.wprefix = join(root, '') |
|
319 | 176 | self.prefixlen = len(self.wprefix) |
|
320 | try: | |
|
321 | self.watcher = watcher.watcher() | |
|
322 | except OSError, err: | |
|
323 | raise util.Abort(_('inotify service not available: %s') % | |
|
324 | err.strerror) | |
|
325 | self.threshold = watcher.threshold(self.watcher) | |
|
326 | self.fileno = self.watcher.fileno | |
|
327 | 177 | |
|
328 | 178 | self.tree = directory() |
|
329 | 179 | self.statcache = {} |
|
330 | 180 | self.statustrees = dict([(s, directory()) for s in self.statuskeys]) |
|
331 | 181 | |
|
182 | self.ds_info = self.dirstate_info() | |
|
183 | ||
|
332 | 184 | self.last_event = None |
|
333 | 185 | |
|
334 | self.lastevent = {} | |
|
335 | 186 | |
|
336 | self.register(timeout=None) | |
|
337 | ||
|
338 | self.ds_info = self.dirstate_info() | |
|
339 | self.handle_timeout() | |
|
340 | self.scan() | |
|
341 | ||
|
342 | def event_time(self): | |
|
343 | last = self.last_event | |
|
344 | now = time.time() | |
|
345 | self.last_event = now | |
|
346 | ||
|
347 | if last is None: | |
|
348 | return 'start' | |
|
349 | delta = now - last | |
|
350 | if delta < 5: | |
|
351 | return '+%.3f' % delta | |
|
352 | if delta < 50: | |
|
353 | return '+%.2f' % delta | |
|
354 | return '+%.1f' % delta | |
|
187 | def handle_timeout(self): | |
|
188 | pass | |
|
355 | 189 | |
|
356 | 190 | def dirstate_info(self): |
|
357 | 191 | try: |
|
358 | 192 | st = os.lstat(self.wprefix + '.hg/dirstate') |
|
359 | 193 | return st.st_mtime, st.st_ino |
|
360 | 194 | except OSError, err: |
|
361 | 195 | if err.errno != errno.ENOENT: |
|
362 | 196 | raise |
|
363 | 197 | return 0, 0 |
|
364 | 198 | |
|
365 | def add_watch(self, path, mask): | |
|
366 | if not path: | |
|
367 | return | |
|
368 | if self.watcher.path(path) is None: | |
|
369 | if self.ui.debugflag: | |
|
370 | self.ui.note(_('watching %r\n') % path[self.prefixlen:]) | |
|
371 | try: | |
|
372 | self.watcher.add(path, mask) | |
|
373 | except OSError, err: | |
|
374 | if err.errno in (errno.ENOENT, errno.ENOTDIR): | |
|
375 | return | |
|
376 | if err.errno != errno.ENOSPC: | |
|
377 | raise | |
|
378 | _explain_watch_limit(self.ui, self.dirstate, self.wprefix) | |
|
379 | ||
|
380 | def setup(self): | |
|
381 | self.ui.note(_('watching directories under %r\n') % self.wprefix) | |
|
382 | self.add_watch(self.wprefix + '.hg', inotify.IN_DELETE) | |
|
383 | self.check_dirstate() | |
|
384 | ||
|
385 | 199 | def filestatus(self, fn, st): |
|
386 | 200 | try: |
|
387 | 201 | type_, mode, size, time = self.dirstate._map[fn][:4] |
|
388 | 202 | except KeyError: |
|
389 | 203 | type_ = '?' |
|
390 | 204 | if type_ == 'n': |
|
391 | 205 | st_mode, st_size, st_mtime = st |
|
392 | 206 | if size == -1: |
|
393 | 207 | return 'l' |
|
394 | 208 | if size and (size != st_size or (mode ^ st_mode) & 0100): |
|
395 | 209 | return 'm' |
|
396 | 210 | if time != int(st_mtime): |
|
397 | 211 | return 'l' |
|
398 | 212 | return 'n' |
|
399 | 213 | if type_ == '?' and self.dirstate._ignore(fn): |
|
400 | 214 | return 'i' |
|
401 | 215 | return type_ |
|
402 | 216 | |
|
403 | 217 | def updatefile(self, wfn, osstat): |
|
404 | 218 | ''' |
|
405 | 219 | update the file entry of an existing file. |
|
406 | 220 | |
|
407 | 221 | osstat: (mode, size, time) tuple, as returned by os.lstat(wfn) |
|
408 | 222 | ''' |
|
409 | 223 | |
|
410 | 224 | self._updatestatus(wfn, self.filestatus(wfn, osstat)) |
|
411 | 225 | |
|
412 | 226 | def deletefile(self, wfn, oldstatus): |
|
413 | 227 | ''' |
|
414 | 228 | update the entry of a file which has been deleted. |
|
415 | 229 | |
|
416 | 230 | oldstatus: char in statuskeys, status of the file before deletion |
|
417 | 231 | ''' |
|
418 | 232 | if oldstatus == 'r': |
|
419 | 233 | newstatus = 'r' |
|
420 | 234 | elif oldstatus in 'almn': |
|
421 | 235 | newstatus = '!' |
|
422 | 236 | else: |
|
423 | 237 | newstatus = None |
|
424 | 238 | |
|
425 | 239 | self.statcache.pop(wfn, None) |
|
426 | 240 | self._updatestatus(wfn, newstatus) |
|
427 | 241 | |
|
428 | 242 | def _updatestatus(self, wfn, newstatus): |
|
429 | 243 | ''' |
|
430 | 244 | Update the stored status of a file. |
|
431 | 245 | |
|
432 | 246 | newstatus: - char in (statuskeys + 'ni'), new status to apply. |
|
433 | 247 | - or None, to stop tracking wfn |
|
434 | 248 | ''' |
|
435 | 249 | root, fn = split(wfn) |
|
436 | 250 | d = self.tree.dir(root) |
|
437 | 251 | |
|
438 | 252 | oldstatus = d.files.get(fn) |
|
439 | 253 | # oldstatus can be either: |
|
440 | 254 | # - None : fn is new |
|
441 | 255 | # - a char in statuskeys: fn is a (tracked) file |
|
442 | 256 | |
|
443 | 257 | if self.ui.debugflag and oldstatus != newstatus: |
|
444 | 258 | self.ui.note(_('status: %r %s -> %s\n') % |
|
445 | 259 | (wfn, oldstatus, newstatus)) |
|
446 | 260 | |
|
447 | 261 | if oldstatus and oldstatus in self.statuskeys \ |
|
448 | 262 | and oldstatus != newstatus: |
|
449 | 263 | del self.statustrees[oldstatus].dir(root).files[fn] |
|
450 | 264 | |
|
451 | 265 | if newstatus in (None, 'i'): |
|
452 | 266 | d.files.pop(fn, None) |
|
453 | 267 | elif oldstatus != newstatus: |
|
454 | 268 | d.files[fn] = newstatus |
|
455 | 269 | if newstatus != 'n': |
|
456 | 270 | self.statustrees[newstatus].dir(root).files[fn] = newstatus |
|
457 | 271 | |
|
458 | ||
|
459 | 272 | def check_deleted(self, key): |
|
460 | 273 | # Files that had been deleted but were present in the dirstate |
|
461 | 274 | # may have vanished from the dirstate; we must clean them up. |
|
462 | 275 | nuke = [] |
|
463 | 276 | for wfn, ignore in self.statustrees[key].walk(key): |
|
464 | 277 | if wfn not in self.dirstate: |
|
465 | 278 | nuke.append(wfn) |
|
466 | 279 | for wfn in nuke: |
|
467 | 280 | root, fn = split(wfn) |
|
468 | 281 | del self.statustrees[key].dir(root).files[fn] |
|
469 | 282 | del self.tree.dir(root).files[fn] |
|
470 | 283 | |
|
471 | def scan(self, topdir=''): | |
|
472 | ds = self.dirstate._map.copy() | |
|
473 | self.add_watch(join(self.wprefix, topdir), self.mask) | |
|
474 | for root, dirs, files in walk(self.dirstate, self.wprefix, topdir): | |
|
475 | for d in dirs: | |
|
476 | self.add_watch(join(root, d), self.mask) | |
|
477 | wroot = root[self.prefixlen:] | |
|
478 | for fn in files: | |
|
479 | wfn = join(wroot, fn) | |
|
480 | self.updatefile(wfn, self.getstat(wfn)) | |
|
481 | ds.pop(wfn, None) | |
|
482 | wtopdir = topdir | |
|
483 | if wtopdir and wtopdir[-1] != '/': | |
|
484 | wtopdir += '/' | |
|
485 | for wfn, state in ds.iteritems(): | |
|
486 | if not wfn.startswith(wtopdir): | |
|
487 | continue | |
|
488 | try: | |
|
489 | st = self.stat(wfn) | |
|
490 | except OSError: | |
|
491 | status = state[0] | |
|
492 | self.deletefile(wfn, status) | |
|
493 | else: | |
|
494 | self.updatefile(wfn, st) | |
|
495 | self.check_deleted('!') | |
|
496 | self.check_deleted('r') | |
|
497 | ||
|
498 | 284 | def check_dirstate(self): |
|
499 | 285 | ds_info = self.dirstate_info() |
|
500 | 286 | if ds_info == self.ds_info: |
|
501 | 287 | return |
|
502 | 288 | self.ds_info = ds_info |
|
503 | 289 | if not self.ui.debugflag: |
|
504 | 290 | self.last_event = None |
|
505 | self.ui.note(_('%s dirstate reload\n') % self.event_time()) | |
|
506 | 291 | self.dirstate.invalidate() |
|
507 | 292 | self.handle_timeout() |
|
508 | 293 | self.scan() |
|
509 | self.ui.note(_('%s end dirstate reload\n') % self.event_time()) | |
|
510 | 294 | |
|
511 | 295 | def update_hgignore(self): |
|
512 | 296 | # An update of the ignore file can potentially change the |
|
513 | 297 | # states of all unknown and ignored files. |
|
514 | 298 | |
|
515 | 299 | # XXX If the user has other ignore files outside the repo, or |
|
516 | 300 | # changes their list of ignore files at run time, we'll |
|
517 | 301 | # potentially never see changes to them. We could get the |
|
518 | 302 | # client to report to us what ignore data they're using. |
|
519 | 303 | # But it's easier to do nothing than to open that can of |
|
520 | 304 | # worms. |
|
521 | 305 | |
|
522 | 306 | if '_ignore' in self.dirstate.__dict__: |
|
523 | 307 | delattr(self.dirstate, '_ignore') |
|
524 | 308 | self.ui.note(_('rescanning due to .hgignore change\n')) |
|
525 | 309 | self.handle_timeout() |
|
526 | 310 | self.scan() |
|
527 | 311 | |
|
528 | 312 | def getstat(self, wpath): |
|
529 | 313 | try: |
|
530 | 314 | return self.statcache[wpath] |
|
531 | 315 | except KeyError: |
|
532 | 316 | try: |
|
533 | 317 | return self.stat(wpath) |
|
534 | 318 | except OSError, err: |
|
535 | 319 | if err.errno != errno.ENOENT: |
|
536 | 320 | raise |
|
537 | 321 | |
|
538 | 322 | def stat(self, wpath): |
|
539 | 323 | try: |
|
540 | 324 | st = os.lstat(join(self.wprefix, wpath)) |
|
541 | 325 | ret = st.st_mode, st.st_size, st.st_mtime |
|
542 | 326 | self.statcache[wpath] = ret |
|
543 | 327 | return ret |
|
544 | 328 | except OSError: |
|
545 | 329 | self.statcache.pop(wpath, None) |
|
546 | 330 | raise |
|
547 | 331 | |
|
548 | @eventaction('c') | |
|
549 | def created(self, wpath): | |
|
550 | if wpath == '.hgignore': | |
|
551 | self.update_hgignore() | |
|
552 | try: | |
|
553 | st = self.stat(wpath) | |
|
554 | if stat.S_ISREG(st[0]): | |
|
555 | self.updatefile(wpath, st) | |
|
556 | except OSError: | |
|
557 | pass | |
|
558 | ||
|
559 | @eventaction('m') | |
|
560 | def modified(self, wpath): | |
|
561 | if wpath == '.hgignore': | |
|
562 | self.update_hgignore() | |
|
563 | try: | |
|
564 | st = self.stat(wpath) | |
|
565 | if stat.S_ISREG(st[0]): | |
|
566 | if self.dirstate[wpath] in 'lmn': | |
|
567 | self.updatefile(wpath, st) | |
|
568 | except OSError: | |
|
569 | pass | |
|
570 | ||
|
571 | @eventaction('d') | |
|
572 | def deleted(self, wpath): | |
|
573 | if wpath == '.hgignore': | |
|
574 | self.update_hgignore() | |
|
575 | elif wpath.startswith('.hg/'): | |
|
576 | if wpath == '.hg/wlock': | |
|
577 | self.check_dirstate() | |
|
578 | return | |
|
579 | ||
|
580 | self.deletefile(wpath, self.dirstate[wpath]) | |
|
581 | ||
|
582 | def process_create(self, wpath, evt): | |
|
583 | if self.ui.debugflag: | |
|
584 | self.ui.note(_('%s event: created %s\n') % | |
|
585 | (self.event_time(), wpath)) | |
|
586 | ||
|
587 | if evt.mask & inotify.IN_ISDIR: | |
|
588 | self.scan(wpath) | |
|
589 | else: | |
|
590 | self.created(wpath) | |
|
591 | ||
|
592 | def process_delete(self, wpath, evt): | |
|
593 | if self.ui.debugflag: | |
|
594 | self.ui.note(_('%s event: deleted %s\n') % | |
|
595 | (self.event_time(), wpath)) | |
|
596 | ||
|
597 | if evt.mask & inotify.IN_ISDIR: | |
|
598 | tree = self.tree.dir(wpath) | |
|
599 | todelete = [wfn for wfn, ignore in tree.walk('?')] | |
|
600 | for fn in todelete: | |
|
601 | self.deletefile(fn, '?') | |
|
602 | self.scan(wpath) | |
|
603 | else: | |
|
604 | self.deleted(wpath) | |
|
605 | ||
|
606 | def process_modify(self, wpath, evt): | |
|
607 | if self.ui.debugflag: | |
|
608 | self.ui.note(_('%s event: modified %s\n') % | |
|
609 | (self.event_time(), wpath)) | |
|
610 | ||
|
611 | if not (evt.mask & inotify.IN_ISDIR): | |
|
612 | self.modified(wpath) | |
|
613 | ||
|
614 | def process_unmount(self, evt): | |
|
615 | self.ui.warn(_('filesystem containing %s was unmounted\n') % | |
|
616 | evt.fullpath) | |
|
617 | sys.exit(0) | |
|
618 | ||
|
619 | def handle_pollevents(self, events): | |
|
620 | if self.ui.debugflag: | |
|
621 | self.ui.note(_('%s readable: %d bytes\n') % | |
|
622 | (self.event_time(), self.threshold.readable())) | |
|
623 | if not self.threshold(): | |
|
624 | if self.registered: | |
|
625 | if self.ui.debugflag: | |
|
626 | self.ui.note(_('%s below threshold - unhooking\n') % | |
|
627 | (self.event_time())) | |
|
628 | self.unregister() | |
|
629 | self.timeout = 250 | |
|
630 | else: | |
|
631 | self.read_events() | |
|
632 | ||
|
633 | def read_events(self, bufsize=None): | |
|
634 | events = self.watcher.read(bufsize) | |
|
635 | if self.ui.debugflag: | |
|
636 | self.ui.note(_('%s reading %d events\n') % | |
|
637 | (self.event_time(), len(events))) | |
|
638 | for evt in events: | |
|
639 | assert evt.fullpath.startswith(self.wprefix) | |
|
640 | wpath = evt.fullpath[self.prefixlen:] | |
|
641 | ||
|
642 | # paths have been normalized, wpath never ends with a '/' | |
|
643 | ||
|
644 | if wpath.startswith('.hg/') and evt.mask & inotify.IN_ISDIR: | |
|
645 | # ignore subdirectories of .hg/ (merge, patches...) | |
|
646 | continue | |
|
647 | ||
|
648 | if evt.mask & inotify.IN_UNMOUNT: | |
|
649 | self.process_unmount(wpath, evt) | |
|
650 | elif evt.mask & (inotify.IN_MODIFY | inotify.IN_ATTRIB): | |
|
651 | self.process_modify(wpath, evt) | |
|
652 | elif evt.mask & (inotify.IN_DELETE | inotify.IN_DELETE_SELF | | |
|
653 | inotify.IN_MOVED_FROM): | |
|
654 | self.process_delete(wpath, evt) | |
|
655 | elif evt.mask & (inotify.IN_CREATE | inotify.IN_MOVED_TO): | |
|
656 | self.process_create(wpath, evt) | |
|
657 | ||
|
658 | self.lastevent.clear() | |
|
659 | ||
|
660 | def handle_timeout(self): | |
|
661 | if not self.registered: | |
|
662 | if self.ui.debugflag: | |
|
663 | self.ui.note(_('%s hooking back up with %d bytes readable\n') % | |
|
664 | (self.event_time(), self.threshold.readable())) | |
|
665 | self.read_events(0) | |
|
666 | self.register(timeout=None) | |
|
667 | ||
|
668 | self.timeout = None | |
|
669 | ||
|
670 | def shutdown(self): | |
|
671 | self.watcher.close() | |
|
672 | ||
|
673 | def debug(self): | |
|
674 | """ | |
|
675 | Returns a sorted list of relatives paths currently watched, | |
|
676 | for debugging purposes. | |
|
677 | """ | |
|
678 | return sorted(tuple[0][self.prefixlen:] for tuple in self.watcher) | |
|
679 | ||
|
680 | class server(pollable): | |
|
332 | class socketlistener(object): | |
|
681 | 333 | """ |
|
682 | 334 | Listens for client queries on unix socket inotify.sock |
|
683 | 335 | """ |
|
684 | 336 | def __init__(self, ui, root, repowatcher, timeout): |
|
685 | 337 | self.ui = ui |
|
686 | 338 | self.repowatcher = repowatcher |
|
687 | 339 | self.sock = socket.socket(socket.AF_UNIX) |
|
688 | 340 | self.sockpath = join(root, '.hg/inotify.sock') |
|
689 | 341 | self.realsockpath = None |
|
690 | 342 | try: |
|
691 | 343 | self.sock.bind(self.sockpath) |
|
692 | 344 | except socket.error, err: |
|
693 | 345 | if err[0] == errno.EADDRINUSE: |
|
694 | 346 | raise AlreadyStartedException( _('cannot start: socket is ' |
|
695 | 347 | 'already bound')) |
|
696 | 348 | if err[0] == "AF_UNIX path too long": |
|
697 | 349 | if os.path.islink(self.sockpath) and \ |
|
698 | 350 | not os.path.exists(self.sockpath): |
|
699 | 351 | raise util.Abort('inotify-server: cannot start: ' |
|
700 | 352 | '.hg/inotify.sock is a broken symlink') |
|
701 | 353 | tempdir = tempfile.mkdtemp(prefix="hg-inotify-") |
|
702 | 354 | self.realsockpath = os.path.join(tempdir, "inotify.sock") |
|
703 | 355 | try: |
|
704 | 356 | self.sock.bind(self.realsockpath) |
|
705 | 357 | os.symlink(self.realsockpath, self.sockpath) |
|
706 | 358 | except (OSError, socket.error), inst: |
|
707 | 359 | try: |
|
708 | 360 | os.unlink(self.realsockpath) |
|
709 | 361 | except: |
|
710 | 362 | pass |
|
711 | 363 | os.rmdir(tempdir) |
|
712 | 364 | if inst.errno == errno.EEXIST: |
|
713 | 365 | raise AlreadyStartedException(_('cannot start: tried ' |
|
714 | 366 | 'linking .hg/inotify.sock to a temporary socket but' |
|
715 | 367 | ' .hg/inotify.sock already exists')) |
|
716 | 368 | raise |
|
717 | 369 | else: |
|
718 | 370 | raise |
|
719 | 371 | self.sock.listen(5) |
|
720 | 372 | self.fileno = self.sock.fileno |
|
721 | self.register(timeout=timeout) | |
|
722 | ||
|
723 | def handle_timeout(self): | |
|
724 | pass | |
|
725 | 373 | |
|
726 | 374 | def answer_stat_query(self, cs): |
|
727 | 375 | names = cs.read().split('\0') |
|
728 | 376 | |
|
729 | 377 | states = names.pop() |
|
730 | 378 | |
|
731 | 379 | self.ui.note(_('answering query for %r\n') % states) |
|
732 | 380 | |
|
733 | if self.repowatcher.timeout: | |
|
734 | # We got a query while a rescan is pending. Make sure we | |
|
735 | # rescan before responding, or we could give back a wrong | |
|
736 | # answer. | |
|
737 | self.repowatcher.handle_timeout() | |
|
738 | ||
|
739 | 381 | visited = set() |
|
740 | 382 | if not names: |
|
741 | 383 | def genresult(states, tree): |
|
742 | 384 | for fn, state in tree.walk(states): |
|
743 | 385 | yield fn |
|
744 | 386 | else: |
|
745 | 387 | def genresult(states, tree): |
|
746 | 388 | for fn in names: |
|
747 | 389 | for f in tree.lookup(states, fn, visited): |
|
748 | 390 | yield f |
|
749 | 391 | |
|
750 | 392 | return ['\0'.join(r) for r in [ |
|
751 | 393 | genresult('l', self.repowatcher.statustrees['l']), |
|
752 | 394 | genresult('m', self.repowatcher.statustrees['m']), |
|
753 | 395 | genresult('a', self.repowatcher.statustrees['a']), |
|
754 | 396 | genresult('r', self.repowatcher.statustrees['r']), |
|
755 | 397 | genresult('!', self.repowatcher.statustrees['!']), |
|
756 | 398 | '?' in states |
|
757 | 399 | and genresult('?', self.repowatcher.statustrees['?']) |
|
758 | 400 | or [], |
|
759 | 401 | [], |
|
760 | 402 | 'c' in states and genresult('n', self.repowatcher.tree) or [], |
|
761 | 403 | visited |
|
762 | 404 | ]] |
|
763 | 405 | |
|
764 | 406 | def answer_dbug_query(self): |
|
765 | 407 | return ['\0'.join(self.repowatcher.debug())] |
|
766 | 408 | |
|
767 | def handle_pollevents(self, events): | |
|
768 | for e in events: | |
|
769 | self.handle_pollevent() | |
|
770 | ||
|
771 | def handle_pollevent(self): | |
|
409 | def accept_connection(self): | |
|
772 | 410 | sock, addr = self.sock.accept() |
|
773 | 411 | |
|
774 | 412 | cs = common.recvcs(sock) |
|
775 | 413 | version = ord(cs.read(1)) |
|
776 | 414 | |
|
777 | 415 | if version != common.version: |
|
778 | 416 | self.ui.warn(_('received query from incompatible client ' |
|
779 | 417 | 'version %d\n') % version) |
|
780 | 418 | try: |
|
781 | 419 | # try to send back our version to the client |
|
782 | 420 | # this way, the client too is informed of the mismatch |
|
783 | 421 | sock.sendall(chr(common.version)) |
|
784 | 422 | except: |
|
785 | 423 | pass |
|
786 | 424 | return |
|
787 | 425 | |
|
788 | 426 | type = cs.read(4) |
|
789 | 427 | |
|
790 | 428 | if type == 'STAT': |
|
791 | 429 | results = self.answer_stat_query(cs) |
|
792 | 430 | elif type == 'DBUG': |
|
793 | 431 | results = self.answer_dbug_query() |
|
794 | 432 | else: |
|
795 | 433 | self.ui.warn(_('unrecognized query type: %s\n') % type) |
|
796 | 434 | return |
|
797 | 435 | |
|
798 | 436 | try: |
|
799 | 437 | try: |
|
800 | 438 | v = chr(common.version) |
|
801 | 439 | |
|
802 | 440 | sock.sendall(v + type + struct.pack(common.resphdrfmts[type], |
|
803 | 441 | *map(len, results))) |
|
804 | 442 | sock.sendall(''.join(results)) |
|
805 | 443 | finally: |
|
806 | 444 | sock.shutdown(socket.SHUT_WR) |
|
807 | 445 | except socket.error, err: |
|
808 | 446 | if err[0] != errno.EPIPE: |
|
809 | 447 | raise |
|
810 | 448 | |
|
811 | def shutdown(self): | |
|
812 | self.sock.close() | |
|
813 | try: | |
|
814 | os.unlink(self.sockpath) | |
|
815 | if self.realsockpath: | |
|
816 | os.unlink(self.realsockpath) | |
|
817 | os.rmdir(os.path.dirname(self.realsockpath)) | |
|
818 | except OSError, err: | |
|
819 | if err.errno != errno.ENOENT: | |
|
820 | raise | |
|
449 | if sys.platform == 'linux2': | |
|
450 | import linuxserver as _server | |
|
451 | else: | |
|
452 | raise ImportError | |
|
821 | 453 | |
|
822 | class master(object): | |
|
823 | def __init__(self, ui, dirstate, root, timeout=None): | |
|
824 | self.ui = ui | |
|
825 | self.repowatcher = repowatcher(ui, dirstate, root) | |
|
826 | self.server = server(ui, root, self.repowatcher, timeout) | |
|
827 | ||
|
828 | def shutdown(self): | |
|
829 | for obj in pollable.instances.itervalues(): | |
|
830 | obj.shutdown() | |
|
831 | ||
|
832 | def run(self): | |
|
833 | self.repowatcher.setup() | |
|
834 | self.ui.note(_('finished setup\n')) | |
|
835 | if os.getenv('TIME_STARTUP'): | |
|
836 | sys.exit(0) | |
|
837 | pollable.run() | |
|
454 | master = _server.master | |
|
838 | 455 | |
|
839 | 456 | def start(ui, dirstate, root, opts): |
|
840 | 457 | timeout = opts.get('timeout') |
|
841 | 458 | if timeout: |
|
842 | 459 | timeout = float(timeout) * 1e3 |
|
843 | 460 | |
|
844 | 461 | class service(object): |
|
845 | 462 | def init(self): |
|
846 | 463 | try: |
|
847 | 464 | self.master = master(ui, dirstate, root, timeout) |
|
848 | 465 | except AlreadyStartedException, inst: |
|
849 | 466 | raise util.Abort("inotify-server: %s" % inst) |
|
850 | 467 | |
|
851 | 468 | def run(self): |
|
852 | 469 | try: |
|
853 | 470 | self.master.run() |
|
854 | 471 | finally: |
|
855 | 472 | self.master.shutdown() |
|
856 | 473 | |
|
857 | 474 | if 'inserve' not in sys.argv: |
|
858 | 475 | runargs = [sys.argv[0], 'inserve', '-R', root] |
|
859 | 476 | else: |
|
860 | 477 | runargs = sys.argv[:] |
|
861 | 478 | |
|
862 | 479 | pidfile = ui.config('inotify', 'pidfile') |
|
863 | 480 | if opts['daemon'] and pidfile is not None and 'pid-file' not in runargs: |
|
864 | 481 | runargs.append("--pid-file=%s" % pidfile) |
|
865 | 482 | |
|
866 | 483 | service = service() |
|
867 | 484 | logfile = ui.config('inotify', 'log') |
|
868 | 485 | cmdutil.service(opts, initfn=service.init, runfn=service.run, |
|
869 | 486 | logfile=logfile, runargs=runargs) |
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