Mercurial > hg
annotate hgext/inotify/server.py @ 10263:25e572394f5c stable
Update license to GPLv2+
author | Matt Mackall <mpm@selenic.com> |
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date | Tue, 19 Jan 2010 22:20:08 -0600 |
parents | 8939900073a8 |
children | d6512b3e9ac0 |
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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 # | |
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6 # This software may be used and distributed according to the terms of the |
10263 | 7 # GNU General Public License version 2 or any later version. |
6239 | 8 |
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9 from mercurial.i18n import _ |
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10 from mercurial import cmdutil, 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 | |
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29 def split(path): |
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30 c = path.rfind('/') |
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31 if c == -1: |
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32 return '', path |
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33 return path[:c], path[c+1:] |
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34 |
6239 | 35 walk_ignored_errors = (errno.ENOENT, errno.ENAMETOOLONG) |
36 | |
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37 def walkrepodirs(dirstate, absroot): |
6239 | 38 '''Iterate over all subdirectories of this repo. |
39 Exclude the .hg directory, any nested repos, and ignored dirs.''' | |
40 def walkit(dirname, top): | |
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41 fullpath = join(absroot, dirname) |
6239 | 42 try: |
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43 for name, kind in osutil.listdir(fullpath): |
6239 | 44 if kind == stat.S_IFDIR: |
45 if name == '.hg': | |
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46 if not top: |
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47 return |
6239 | 48 else: |
49 d = join(dirname, name) | |
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50 if dirstate._ignore(d): |
6239 | 51 continue |
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52 for subdir in walkit(d, False): |
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53 yield subdir |
6239 | 54 except OSError, err: |
55 if err.errno not in walk_ignored_errors: | |
56 raise | |
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57 yield fullpath |
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58 |
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59 return walkit('', True) |
6239 | 60 |
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61 def walk(dirstate, absroot, root): |
6239 | 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: | |
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70 fullpath = join(absroot, root) |
6239 | 71 for name, kind in osutil.listdir(fullpath): |
72 if kind == stat.S_IFDIR: | |
73 if name == '.hg': | |
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74 if not reporoot: |
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75 return |
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76 else: |
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77 dirs.append(name) |
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78 path = join(root, name) |
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79 if dirstate._ignore(path): |
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80 continue |
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81 for result in walkit(path, False): |
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82 yield result |
6239 | 83 elif kind in (stat.S_IFREG, stat.S_IFLNK): |
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84 files.append(name) |
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85 yield fullpath, dirs, files |
6239 | 86 |
87 except OSError, err: | |
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88 if err.errno == errno.ENOTDIR: |
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89 # fullpath was a directory, but has since been replaced |
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90 # by a file. |
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91 yield fullpath, dirs, files |
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92 elif err.errno not in walk_ignored_errors: |
6239 | 93 raise |
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94 |
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95 return walkit(root, root == '') |
6239 | 96 |
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97 def _explain_watch_limit(ui, dirstate, rootabs): |
6239 | 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: ')) | |
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111 ndirs = len(list(walkrepodirs(dirstate, rootabs))) |
6239 | 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') | |
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120 % rootabs) |
6239 | 121 |
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122 class pollable(object): |
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123 """ |
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124 Interface to support polling. |
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125 The file descriptor returned by fileno() is registered to a polling |
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126 object. |
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127 Usage: |
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128 Every tick, check if an event has happened since the last tick: |
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129 * If yes, call handle_events |
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130 * If no, call handle_timeout |
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131 """ |
6239 | 132 poll_events = select.POLLIN |
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133 instances = {} |
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134 poll = select.poll() |
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135 |
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136 def fileno(self): |
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137 raise NotImplementedError |
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138 |
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139 def handle_events(self, events): |
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140 raise NotImplementedError |
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141 |
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142 def handle_timeout(self): |
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143 raise NotImplementedError |
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144 |
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145 def shutdown(self): |
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146 raise NotImplementedError |
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147 |
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148 def register(self, timeout): |
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149 fd = self.fileno() |
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150 |
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151 pollable.poll.register(fd, pollable.poll_events) |
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152 pollable.instances[fd] = self |
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153 |
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154 self.registered = True |
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155 self.timeout = timeout |
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156 |
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157 def unregister(self): |
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158 pollable.poll.unregister(self) |
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159 self.registered = False |
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160 |
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161 @classmethod |
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162 def run(cls): |
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163 while True: |
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164 timeout = None |
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165 timeobj = None |
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166 for obj in cls.instances.itervalues(): |
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167 if obj.timeout is not None and (timeout is None or obj.timeout < timeout): |
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168 timeout, timeobj = obj.timeout, obj |
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169 try: |
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170 events = cls.poll.poll(timeout) |
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171 except select.error, err: |
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172 if err[0] == errno.EINTR: |
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173 continue |
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174 raise |
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175 if events: |
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176 by_fd = {} |
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177 for fd, event in events: |
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178 by_fd.setdefault(fd, []).append(event) |
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179 |
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180 for fd, events in by_fd.iteritems(): |
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181 cls.instances[fd].handle_pollevents(events) |
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182 |
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183 elif timeobj: |
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184 timeobj.handle_timeout() |
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185 |
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186 def eventaction(code): |
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187 """ |
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188 Decorator to help handle events in repowatcher |
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189 """ |
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190 def decorator(f): |
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191 def wrapper(self, wpath): |
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192 if code == 'm' and wpath in self.lastevent and \ |
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193 self.lastevent[wpath] in 'cm': |
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194 return |
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195 self.lastevent[wpath] = code |
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196 self.timeout = 250 |
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197 |
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198 f(self, wpath) |
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199 |
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200 wrapper.func_name = f.func_name |
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201 return wrapper |
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202 return decorator |
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203 |
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204 class directory(object): |
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205 """ |
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206 Representing a directory |
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207 |
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208 * path is the relative path from repo root to this directory |
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209 * files is a dict listing the files in this directory |
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210 - keys are file names |
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211 - values are file status |
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212 * dirs is a dict listing the subdirectories |
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213 - key are subdirectories names |
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214 - values are directory objects |
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215 """ |
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216 def __init__(self, relpath=''): |
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217 self.path = relpath |
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218 self.files = {} |
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219 self.dirs = {} |
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220 |
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221 def dir(self, relpath): |
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222 """ |
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223 Returns the directory contained at the relative path relpath. |
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224 Creates the intermediate directories if necessary. |
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225 """ |
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226 if not relpath: |
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227 return self |
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228 l = relpath.split('/') |
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229 ret = self |
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230 while l: |
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231 next = l.pop(0) |
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232 try: |
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233 ret = ret.dirs[next] |
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234 except KeyError: |
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235 d = directory(join(ret.path, next)) |
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236 ret.dirs[next] = d |
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237 ret = d |
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238 return ret |
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239 |
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240 def walk(self, states, visited=None): |
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241 """ |
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242 yield (filename, status) pairs for items in the trees |
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243 that have status in states. |
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244 filenames are relative to the repo root |
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245 """ |
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246 for file, st in self.files.iteritems(): |
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247 if st in states: |
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248 yield join(self.path, file), st |
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249 for dir in self.dirs.itervalues(): |
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250 if visited is not None: |
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251 visited.add(dir.path) |
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252 for e in dir.walk(states): |
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253 yield e |
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254 |
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255 def lookup(self, states, path, visited): |
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256 """ |
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257 yield root-relative filenames that match path, and whose |
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258 status are in states: |
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259 * if path is a file, yield path |
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260 * if path is a directory, yield directory files |
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261 * if path is not tracked, yield nothing |
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262 """ |
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263 if path[-1] == '/': |
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264 path = path[:-1] |
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265 |
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266 paths = path.split('/') |
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267 |
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268 # we need to check separately for last node |
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269 last = paths.pop() |
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270 |
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271 tree = self |
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272 try: |
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273 for dir in paths: |
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274 tree = tree.dirs[dir] |
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275 except KeyError: |
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276 # path is not tracked |
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277 visited.add(tree.path) |
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278 return |
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279 |
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280 try: |
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281 # if path is a directory, walk it |
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282 target = tree.dirs[last] |
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283 visited.add(target.path) |
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284 for file, st in target.walk(states, visited): |
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285 yield file |
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286 except KeyError: |
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287 try: |
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288 if tree.files[last] in states: |
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289 # path is a file |
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290 visited.add(tree.path) |
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291 yield path |
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292 except KeyError: |
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293 # path is not tracked |
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294 pass |
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295 |
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296 class repowatcher(pollable): |
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297 """ |
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298 Watches inotify events |
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299 """ |
6239 | 300 statuskeys = 'almr!?' |
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301 mask = ( |
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302 inotify.IN_ATTRIB | |
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303 inotify.IN_CREATE | |
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304 inotify.IN_DELETE | |
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305 inotify.IN_DELETE_SELF | |
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306 inotify.IN_MODIFY | |
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307 inotify.IN_MOVED_FROM | |
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308 inotify.IN_MOVED_TO | |
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309 inotify.IN_MOVE_SELF | |
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310 inotify.IN_ONLYDIR | |
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311 inotify.IN_UNMOUNT | |
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312 0) |
6239 | 313 |
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314 def __init__(self, ui, dirstate, root): |
6239 | 315 self.ui = ui |
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316 self.dirstate = dirstate |
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317 |
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318 self.wprefix = join(root, '') |
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319 self.prefixlen = len(self.wprefix) |
6239 | 320 try: |
8385
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diff
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|
321 self.watcher = watcher.watcher() |
6239 | 322 except OSError, err: |
323 raise util.Abort(_('inotify service not available: %s') % | |
324 err.strerror) | |
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|
325 self.threshold = watcher.threshold(self.watcher) |
6239 | 326 self.fileno = self.watcher.fileno |
327 | |
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328 self.tree = directory() |
6239 | 329 self.statcache = {} |
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330 self.statustrees = dict([(s, directory()) for s in self.statuskeys]) |
6239 | 331 |
332 self.last_event = None | |
333 | |
8605
ed2d9bdbfad2
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diff
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|
334 self.lastevent = {} |
6239 | 335 |
8792
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diff
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|
336 self.register(timeout=None) |
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|
337 |
6239 | 338 self.ds_info = self.dirstate_info() |
8604
578f2a0049cd
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|
339 self.handle_timeout() |
6239 | 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 | |
355 | |
356 def dirstate_info(self): | |
357 try: | |
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358 st = os.lstat(self.wprefix + '.hg/dirstate') |
6239 | 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 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: | |
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370 self.ui.note(_('watching %r\n') % path[self.prefixlen:]) |
6239 | 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 | |
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diff
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|
378 _explain_watch_limit(self.ui, self.dirstate, self.wprefix) |
6239 | 379 |
380 def setup(self): | |
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381 self.ui.note(_('watching directories under %r\n') % self.wprefix) |
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diff
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|
382 self.add_watch(self.wprefix + '.hg', inotify.IN_DELETE) |
6239 | 383 self.check_dirstate() |
384 | |
385 def filestatus(self, fn, st): | |
386 try: | |
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diff
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|
387 type_, mode, size, time = self.dirstate._map[fn][:4] |
6239 | 388 except KeyError: |
389 type_ = '?' | |
390 if type_ == 'n': | |
391 st_mode, st_size, st_mtime = st | |
7082
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diff
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|
392 if size == -1: |
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diff
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|
393 return 'l' |
6239 | 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' | |
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|
399 if type_ == '?' and self.dirstate._ignore(fn): |
6239 | 400 return 'i' |
401 return type_ | |
402 | |
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|
403 def updatefile(self, wfn, osstat): |
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diff
changeset
|
404 ''' |
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|
405 update the file entry of an existing file. |
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diff
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|
406 |
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diff
changeset
|
407 osstat: (mode, size, time) tuple, as returned by os.lstat(wfn) |
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|
408 ''' |
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diff
changeset
|
409 |
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diff
changeset
|
410 self._updatestatus(wfn, self.filestatus(wfn, osstat)) |
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diff
changeset
|
411 |
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diff
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|
412 def deletefile(self, wfn, oldstatus): |
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diff
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|
413 ''' |
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diff
changeset
|
414 update the entry of a file which has been deleted. |
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diff
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|
415 |
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diff
changeset
|
416 oldstatus: char in statuskeys, status of the file before deletion |
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diff
changeset
|
417 ''' |
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|
418 if oldstatus == 'r': |
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|
419 newstatus = 'r' |
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|
420 elif oldstatus in 'almn': |
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diff
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|
421 newstatus = '!' |
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|
422 else: |
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|
423 newstatus = None |
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|
424 |
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|
425 self.statcache.pop(wfn, None) |
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|
426 self._updatestatus(wfn, newstatus) |
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|
427 |
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diff
changeset
|
428 def _updatestatus(self, wfn, newstatus): |
8382
6f44b1adc948
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|
429 ''' |
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|
430 Update the stored status of a file. |
8382
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diff
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|
431 |
8599
1f706b1b62f3
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changeset
|
432 newstatus: - char in (statuskeys + 'ni'), new status to apply. |
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|
433 - or None, to stop tracking wfn |
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diff
changeset
|
434 ''' |
8787
9aca76502280
inotify: server: move split() out of server
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parents:
8786
diff
changeset
|
435 root, fn = split(wfn) |
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diff
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|
436 d = self.tree.dir(root) |
8599
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diff
changeset
|
437 |
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diff
changeset
|
438 oldstatus = d.files.get(fn) |
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439 # oldstatus can be either: |
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440 # - None : fn is new |
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441 # - a char in statuskeys: fn is a (tracked) file |
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442 |
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diff
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|
443 if self.ui.debugflag and oldstatus != newstatus: |
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444 self.ui.note(_('status: %r %s -> %s\n') % |
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445 (wfn, oldstatus, newstatus)) |
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446 |
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447 if oldstatus and oldstatus in self.statuskeys \ |
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448 and oldstatus != newstatus: |
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449 del self.statustrees[oldstatus].dir(root).files[fn] |
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450 |
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451 if newstatus in (None, 'i'): |
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452 d.files.pop(fn, None) |
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453 elif oldstatus != newstatus: |
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454 d.files[fn] = newstatus |
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455 if newstatus != 'n': |
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456 self.statustrees[newstatus].dir(root).files[fn] = newstatus |
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457 |
6239 | 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 = [] | |
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463 for wfn, ignore in self.statustrees[key].walk(key): |
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464 if wfn not in self.dirstate: |
6239 | 465 nuke.append(wfn) |
466 for wfn in nuke: | |
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467 root, fn = split(wfn) |
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468 del self.statustrees[key].dir(root).files[fn] |
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469 del self.tree.dir(root).files[fn] |
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470 |
6239 | 471 def scan(self, topdir=''): |
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472 ds = self.dirstate._map.copy() |
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473 self.add_watch(join(self.wprefix, topdir), self.mask) |
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474 for root, dirs, files in walk(self.dirstate, self.wprefix, topdir): |
6239 | 475 for d in dirs: |
476 self.add_watch(join(root, d), self.mask) | |
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changeset
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477 wroot = root[self.prefixlen:] |
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inotify: inotify.server.walk() filetype is never used, do not yield it
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diff
changeset
|
478 for fn in files: |
6239 | 479 wfn = join(wroot, fn) |
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480 self.updatefile(wfn, self.getstat(wfn)) |
6239 | 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 | |
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972737252d05
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|
488 try: |
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489 st = self.stat(wfn) |
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490 except OSError: |
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491 status = state[0] |
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492 self.deletefile(wfn, status) |
6239 | 493 else: |
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494 self.updatefile(wfn, st) |
6239 | 495 self.check_deleted('!') |
496 self.check_deleted('r') | |
497 | |
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()) | |
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506 self.dirstate.invalidate() |
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changeset
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507 self.handle_timeout() |
6239 | 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 | |
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522 if '_ignore' in self.dirstate.__dict__: |
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523 delattr(self.dirstate, '_ignore') |
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diff
changeset
|
524 self.ui.note(_('rescanning due to .hgignore change\n')) |
8604
578f2a0049cd
inotify: do not recurse in handle_timeout(): call it explicitely, not in scan()
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changeset
|
525 self.handle_timeout() |
6239 | 526 self.scan() |
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diff
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|
527 |
6239 | 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 | |
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|
537 |
6239 | 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 | |
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810ca383da9c
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diff
changeset
|
544 except OSError: |
6239 | 545 self.statcache.pop(wpath, None) |
546 raise | |
6287
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|
547 |
8606
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diff
changeset
|
548 @eventaction('c') |
6239 | 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]): | |
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changeset
|
555 self.updatefile(wpath, st) |
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diff
changeset
|
556 except OSError: |
6239 | 557 pass |
558 | |
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diff
changeset
|
559 @eventaction('m') |
6239 | 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]): | |
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diff
changeset
|
566 if self.dirstate[wpath] in 'lmn': |
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changeset
|
567 self.updatefile(wpath, st) |
6239 | 568 except OSError: |
569 pass | |
570 | |
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changeset
|
571 @eventaction('d') |
6239 | 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 | |
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diff
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|
580 self.deletefile(wpath, self.dirstate[wpath]) |
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diff
changeset
|
581 |
6239 | 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: | |
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diff
changeset
|
590 self.created(wpath) |
6239 | 591 |
592 def process_delete(self, wpath, evt): | |
593 if self.ui.debugflag: | |
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changeset
|
594 self.ui.note(_('%s event: deleted %s\n') % |
6239 | 595 (self.event_time(), wpath)) |
596 | |
597 if evt.mask & inotify.IN_ISDIR: | |
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|
598 tree = self.tree.dir(wpath) |
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|
599 todelete = [wfn for wfn, ignore in tree.walk('?')] |
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|
600 for fn in todelete: |
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changeset
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601 self.deletefile(fn, '?') |
6239 | 602 self.scan(wpath) |
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changeset
|
603 else: |
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changeset
|
604 self.deleted(wpath) |
6239 | 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): | |
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diff
changeset
|
612 self.modified(wpath) |
6239 | 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 | |
8609
aeaa0bd9dc24
inotify: process all inotify events in one batch
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8608
diff
changeset
|
619 def handle_pollevents(self, events): |
6239 | 620 if self.ui.debugflag: |
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changeset
|
621 self.ui.note(_('%s readable: %d bytes\n') % |
6239 | 622 (self.event_time(), self.threshold.readable())) |
623 if not self.threshold(): | |
624 if self.registered: | |
625 if self.ui.debugflag: | |
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changeset
|
626 self.ui.note(_('%s below threshold - unhooking\n') % |
6239 | 627 (self.event_time())) |
8792
3e23b1d20837
inotify: refactor (un)register methods into pollable object
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8791
diff
changeset
|
628 self.unregister() |
6239 | 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: | |
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changeset
|
636 self.ui.note(_('%s reading %d events\n') % |
6239 | 637 (self.event_time(), len(events))) |
638 for evt in events: | |
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diff
changeset
|
639 assert evt.fullpath.startswith(self.wprefix) |
9349
56fb15ad8fb1
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diff
changeset
|
640 wpath = evt.fullpath[self.prefixlen:] |
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diff
changeset
|
641 |
9117
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diff
changeset
|
642 # paths have been normalized, wpath never ends with a '/' |
a87bc6e2a907
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diff
changeset
|
643 |
a87bc6e2a907
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diff
changeset
|
644 if wpath.startswith('.hg/') and evt.mask & inotify.IN_ISDIR: |
a87bc6e2a907
inotify: server: explicitely ignore events in subdirs of .hg/ (issue1735)
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changeset
|
645 # ignore subdirectories of .hg/ (merge, patches...) |
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diff
changeset
|
646 continue |
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diff
changeset
|
647 |
6239 | 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 | |
8605
ed2d9bdbfad2
inotify: do not defer inotify events processing
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8604
diff
changeset
|
658 self.lastevent.clear() |
ed2d9bdbfad2
inotify: do not defer inotify events processing
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diff
changeset
|
659 |
6239 | 660 def handle_timeout(self): |
661 if not self.registered: | |
662 if self.ui.debugflag: | |
6961
12163fb21fce
i18n: mark strings for translation in inotify extension
Martin Geisler <mg@daimi.au.dk>
parents:
6909
diff
changeset
|
663 self.ui.note(_('%s hooking back up with %d bytes readable\n') % |
6239 | 664 (self.event_time(), self.threshold.readable())) |
665 self.read_events(0) | |
8792
3e23b1d20837
inotify: refactor (un)register methods into pollable object
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
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diff
changeset
|
666 self.register(timeout=None) |
6239 | 667 |
668 self.timeout = None | |
669 | |
670 def shutdown(self): | |
671 self.watcher.close() | |
672 | |
8555
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
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diff
changeset
|
673 def debug(self): |
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
Nicolas Dumazet <nicdumz.commits@gmail.com>
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diff
changeset
|
674 """ |
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
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8554
diff
changeset
|
675 Returns a sorted list of relatives paths currently watched, |
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8554
diff
changeset
|
676 for debugging purposes. |
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8554
diff
changeset
|
677 """ |
9349
56fb15ad8fb1
inotify: server: use wprefix everywhere, introduce prefixlen
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9348
diff
changeset
|
678 return sorted(tuple[0][self.prefixlen:] for tuple in self.watcher) |
8555
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8554
diff
changeset
|
679 |
8610
8ef1f63e554c
inotify: server: use a common 'pollable' interface for server & repowatcher
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8609
diff
changeset
|
680 class server(pollable): |
8ef1f63e554c
inotify: server: use a common 'pollable' interface for server & repowatcher
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8609
diff
changeset
|
681 """ |
8ef1f63e554c
inotify: server: use a common 'pollable' interface for server & repowatcher
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8609
diff
changeset
|
682 Listens for client queries on unix socket inotify.sock |
8ef1f63e554c
inotify: server: use a common 'pollable' interface for server & repowatcher
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8609
diff
changeset
|
683 """ |
9350
b789ea382fc0
inotify: server: use dirstate instead of repo
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9349
diff
changeset
|
684 def __init__(self, ui, root, repowatcher, timeout): |
6239 | 685 self.ui = ui |
8335
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inotify: Clarify the use of "watcher" name.
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parents:
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diff
changeset
|
686 self.repowatcher = repowatcher |
6239 | 687 self.sock = socket.socket(socket.AF_UNIX) |
9350
b789ea382fc0
inotify: server: use dirstate instead of repo
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9349
diff
changeset
|
688 self.sockpath = join(root, '.hg/inotify.sock') |
6997
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
689 self.realsockpath = None |
6239 | 690 try: |
691 self.sock.bind(self.sockpath) | |
692 except socket.error, err: | |
693 if err[0] == errno.EADDRINUSE: | |
9900
8939900073a8
inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
694 raise AlreadyStartedException( _('cannot start: socket is ' |
8939900073a8
inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
695 'already bound')) |
6997
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
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diff
changeset
|
696 if err[0] == "AF_UNIX path too long": |
9900
8939900073a8
inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
697 if os.path.islink(self.sockpath) and \ |
8939900073a8
inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
698 not os.path.exists(self.sockpath): |
8939900073a8
inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
699 raise util.Abort('inotify-server: cannot start: ' |
8939900073a8
inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
700 '.hg/inotify.sock is a broken symlink') |
6997
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
701 tempdir = tempfile.mkdtemp(prefix="hg-inotify-") |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
702 self.realsockpath = os.path.join(tempdir, "inotify.sock") |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
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parents:
6994
diff
changeset
|
703 try: |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
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parents:
6994
diff
changeset
|
704 self.sock.bind(self.realsockpath) |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
705 os.symlink(self.realsockpath, self.sockpath) |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
706 except (OSError, socket.error), inst: |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
707 try: |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
708 os.unlink(self.realsockpath) |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
709 except: |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
710 pass |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
711 os.rmdir(tempdir) |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
712 if inst.errno == errno.EEXIST: |
9900
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inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
713 raise AlreadyStartedException(_('cannot start: tried ' |
8939900073a8
inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
714 'linking .hg/inotify.sock to a temporary socket but' |
8939900073a8
inotify: improve error messages
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9897
diff
changeset
|
715 ' .hg/inotify.sock already exists')) |
6997
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
716 raise |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
717 else: |
9c4e488f105e
inotify: workaround ENAMETOOLONG by using symlinks
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
6994
diff
changeset
|
718 raise |
6239 | 719 self.sock.listen(5) |
720 self.fileno = self.sock.fileno | |
8792
3e23b1d20837
inotify: refactor (un)register methods into pollable object
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8791
diff
changeset
|
721 self.register(timeout=timeout) |
6239 | 722 |
723 def handle_timeout(self): | |
724 pass | |
725 | |
8554
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
726 def answer_stat_query(self, cs): |
6239 | 727 names = cs.read().split('\0') |
6287
c86207d41512
Spacing cleanup
Thomas Arendsen Hein <thomas@intevation.de>
parents:
6239
diff
changeset
|
728 |
6239 | 729 states = names.pop() |
730 | |
731 self.ui.note(_('answering query for %r\n') % states) | |
732 | |
8335
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
733 if self.repowatcher.timeout: |
6239 | 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. | |
8335
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
737 self.repowatcher.handle_timeout() |
6239 | 738 |
9854
95e1867f765b
inotify: mark directories visited during lookup (issue1844)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9514
diff
changeset
|
739 visited = set() |
6239 | 740 if not names: |
741 def genresult(states, tree): | |
9115
b55d44719b47
inotify: server: new data structure to keep track of changes.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8953
diff
changeset
|
742 for fn, state in tree.walk(states): |
6239 | 743 yield fn |
744 else: | |
745 def genresult(states, tree): | |
746 for fn in names: | |
9854
95e1867f765b
inotify: mark directories visited during lookup (issue1844)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9514
diff
changeset
|
747 for f in tree.lookup(states, fn, visited): |
9115
b55d44719b47
inotify: server: new data structure to keep track of changes.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8953
diff
changeset
|
748 yield f |
6239 | 749 |
8554
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
750 return ['\0'.join(r) for r in [ |
8335
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
751 genresult('l', self.repowatcher.statustrees['l']), |
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
752 genresult('m', self.repowatcher.statustrees['m']), |
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
753 genresult('a', self.repowatcher.statustrees['a']), |
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
754 genresult('r', self.repowatcher.statustrees['r']), |
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
755 genresult('!', self.repowatcher.statustrees['!']), |
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
756 '?' in states |
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
757 and genresult('?', self.repowatcher.statustrees['?']) |
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
758 or [], |
6239 | 759 [], |
8335
713ec3f9c9de
inotify: Clarify the use of "watcher" name.
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8334
diff
changeset
|
760 'c' in states and genresult('n', self.repowatcher.tree) or [], |
9854
95e1867f765b
inotify: mark directories visited during lookup (issue1844)
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
9514
diff
changeset
|
761 visited |
6239 | 762 ]] |
763 | |
8555
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
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diff
changeset
|
764 def answer_dbug_query(self): |
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
Nicolas Dumazet <nicdumz.commits@gmail.com>
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diff
changeset
|
765 return ['\0'.join(self.repowatcher.debug())] |
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
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diff
changeset
|
766 |
8609
aeaa0bd9dc24
inotify: process all inotify events in one batch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8608
diff
changeset
|
767 def handle_pollevents(self, events): |
aeaa0bd9dc24
inotify: process all inotify events in one batch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8608
diff
changeset
|
768 for e in events: |
aeaa0bd9dc24
inotify: process all inotify events in one batch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8608
diff
changeset
|
769 self.handle_pollevent() |
aeaa0bd9dc24
inotify: process all inotify events in one batch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8608
diff
changeset
|
770 |
8608
228db070bfc4
inotify: rename handle_event to handle_pollevent to avoid confusion
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8607
diff
changeset
|
771 def handle_pollevent(self): |
8554
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
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diff
changeset
|
772 sock, addr = self.sock.accept() |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
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8553
diff
changeset
|
773 |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
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diff
changeset
|
774 cs = common.recvcs(sock) |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
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diff
changeset
|
775 version = ord(cs.read(1)) |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
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diff
changeset
|
776 |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
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diff
changeset
|
777 if version != common.version: |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
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parents:
8553
diff
changeset
|
778 self.ui.warn(_('received query from incompatible client ' |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
779 'version %d\n') % version) |
8952
7c7a672e9db7
inotify: return version to client even when not matching
Simon Heimberg <simohe@besonet.ch>
parents:
8794
diff
changeset
|
780 try: |
7c7a672e9db7
inotify: return version to client even when not matching
Simon Heimberg <simohe@besonet.ch>
parents:
8794
diff
changeset
|
781 # try to send back our version to the client |
7c7a672e9db7
inotify: return version to client even when not matching
Simon Heimberg <simohe@besonet.ch>
parents:
8794
diff
changeset
|
782 # this way, the client too is informed of the mismatch |
7c7a672e9db7
inotify: return version to client even when not matching
Simon Heimberg <simohe@besonet.ch>
parents:
8794
diff
changeset
|
783 sock.sendall(chr(common.version)) |
7c7a672e9db7
inotify: return version to client even when not matching
Simon Heimberg <simohe@besonet.ch>
parents:
8794
diff
changeset
|
784 except: |
7c7a672e9db7
inotify: return version to client even when not matching
Simon Heimberg <simohe@besonet.ch>
parents:
8794
diff
changeset
|
785 pass |
8554
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
786 return |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
787 |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
788 type = cs.read(4) |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
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8553
diff
changeset
|
789 |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
790 if type == 'STAT': |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
791 results = self.answer_stat_query(cs) |
8555
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
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diff
changeset
|
792 elif type == 'DBUG': |
3e09bc5fee12
inotify: introduce debuginotify, which lists which paths are under watch
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8554
diff
changeset
|
793 results = self.answer_dbug_query() |
8554
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
794 else: |
47d7347484f5
inotify: put STAT-specific query answer generation part in its own method
Nicolas Dumazet <nicdumz.commits@gmail.com>
parents:
8553
diff
changeset
|
795 self.ui.warn(_('unrecognized query type: %s\n') % type) |
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796 return |
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797 |
6239 | 798 try: |
799 try: | |
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800 v = chr(common.version) |
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801 |
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802 sock.sendall(v + type + struct.pack(common.resphdrfmts[type], |
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803 *map(len, results))) |
6239 | 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 | |
810 | |
811 def shutdown(self): | |
812 self.sock.close() | |
813 try: | |
814 os.unlink(self.sockpath) | |
6997
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815 if self.realsockpath: |
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816 os.unlink(self.realsockpath) |
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817 os.rmdir(os.path.dirname(self.realsockpath)) |
6239 | 818 except OSError, err: |
819 if err.errno != errno.ENOENT: | |
820 raise | |
821 | |
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822 class master(object): |
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823 def __init__(self, ui, dirstate, root, timeout=None): |
6239 | 824 self.ui = ui |
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825 self.repowatcher = repowatcher(ui, dirstate, root) |
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826 self.server = server(ui, root, self.repowatcher, timeout) |
6239 | 827 |
828 def shutdown(self): | |
8792
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829 for obj in pollable.instances.itervalues(): |
6239 | 830 obj.shutdown() |
831 | |
832 def run(self): | |
8335
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833 self.repowatcher.setup() |
6239 | 834 self.ui.note(_('finished setup\n')) |
835 if os.getenv('TIME_STARTUP'): | |
836 sys.exit(0) | |
8793
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837 pollable.run() |
6239 | 838 |
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839 def start(ui, dirstate, root, opts): |
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840 timeout = opts.get('timeout') |
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841 if timeout: |
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842 timeout = float(timeout) * 1e3 |
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843 |
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844 class service(object): |
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845 def init(self): |
7451
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846 try: |
9514
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847 self.master = master(ui, dirstate, root, timeout) |
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848 except AlreadyStartedException, inst: |
9900
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849 raise util.Abort("inotify-server: %s" % inst) |
6239 | 850 |
9514
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851 def run(self): |
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852 try: |
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853 self.master.run() |
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854 finally: |
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855 self.master.shutdown() |
6239 | 856 |
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857 if 'inserve' not in sys.argv: |
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858 runargs = [sys.argv[0], 'inserve', '-R', root] |
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859 else: |
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860 runargs = sys.argv[:] |
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861 |
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862 pidfile = ui.config('inotify', 'pidfile') |
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863 if opts['daemon'] and pidfile is not None and 'pid-file' not in runargs: |
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864 runargs.append("--pid-file=%s" % pidfile) |
6239 | 865 |
9514
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866 service = service() |
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867 logfile = ui.config('inotify', 'log') |
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868 cmdutil.service(opts, initfn=service.init, runfn=service.run, |
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869 logfile=logfile, runargs=runargs) |