2 # Copyright (c) 2012 Eric S. Raymond <esr@thyrsus.com>
3 # Distributed under BSD terms.
5 # This script contains git porcelain and porcelain byproducts.
6 # Requires Python 2.6, or 2.4 with the 2.6 json library installed.
8 # usage: irkerhook.py [-V] [-n] [--variable=value...] [commit_id...]
10 # This script is meant to be run in an update or post-commit hook.
11 # Try it with -n to see the notification dumped to stdout and verify
12 # that it looks sane. With -V this script dumps its version and exits.
14 # See the irkerhook manual page in the distribution for a detailed
15 # explanation of how to configure this hook.
17 # The default location of the irker proxy, if the project configuration
18 # does not override it.
19 default_server = "localhost"
22 # The default service used to turn your web-view URL into a tinyurl so it
23 # will take up less space on the IRC notification line.
24 default_tinyifier = "http://tinyurl.com/api-create.php?url="
26 # Map magic urlprefix values to actual URL prefixes.
28 "viewcvs": "http://%(host)s/viewcvs/%(repo)s?view=revision&revision=",
29 "gitweb": "http://%(host)s/cgi-bin/gitweb.cgi?p=%(repo)s;a=commit;h=",
30 "cgit": "http://%(host)s/cgi-bin/cgit.cgi/%(repo)s/commit/?id=",
33 # By default, the channel list includes the freenode #commits list
34 default_channels = "irc://chat.freenode.net/%(project)s,irc://chat.freenode.net/#commits"
37 # No user-serviceable parts below this line:
42 import os, sys, commands, socket, urllib, subprocess
43 from pipes import quote as shellquote
45 import simplejson as json # Faster, also makes us Python-2.4-compatible
50 return commands.getstatusoutput(command)[1]
53 def __init__(self, extractor, commit):
63 self.__dict__.update(extractor.__dict__)
65 "Produce a notification string from this commit."
66 if self.urlprefix.lower() == "none":
69 urlprefix = urlprefixmap.get(self.urlprefix, self.urlprefix)
70 webview = (urlprefix % self.__dict__) + self.commit
72 if urllib.urlopen(webview).getcode() == 404:
75 # Didn't get a retrieval error or 404 on the web
76 # view, so try to tinyify a reference to it.
77 self.url = open(urllib.urlretrieve(self.tinyifier + webview)[0]).read()
82 return self.template % self.__dict__
84 class GenericExtractor:
85 "Generic class for encapsulating data from a VCS."
87 numerics = ["maxchannels"]
88 def __init__(self, arguments):
89 self.arguments = arguments
92 # These aren't really repo data but they belong here anyway...
94 self.tinyifier = default_tinyifier
100 self.host = socket.getfqdn()
101 self.filtercmd = None
102 # Color highlighting is disabled by default.
104 self.bold = self.green = self.blue = ""
105 self.yellow = self.brown = self.reset = ""
106 def activate_color(self, style):
112 self.yellow = '\x037'
116 self.bold = '\x1b[1m;'
117 self.green = '\x1b[1;2m;'
118 self.blue = '\x1b[1;4m;'
119 self.yellow = '\x1b[1;3m;'
120 self.brown = '\x1b[3m;'
121 self.reset = '\x1b[0m;'
122 def load_preferences(self, conf):
123 "Load preferences from a file in the repository root."
124 if not os.path.exists(conf):
127 for line in open(conf):
129 if line.startswith("#") or not line.strip():
131 elif line.count('=') != 1:
132 sys.stderr.write('"%s", line %d: missing = in config line\n' \
135 fields = line.split('=')
137 sys.stderr.write('"%s", line %d: too many fields in config line\n' \
140 variable = fields[0].strip()
141 value = fields[1].strip()
142 if value.lower() == "true":
144 elif value.lower() == "false":
146 # User cannot set maxchannels - only a command-line arg can do that.
147 if variable == "maxchannels":
149 setattr(self, variable, value)
150 def do_overrides(self):
151 "Make command-line overrides possible."
152 for tok in self.arguments:
153 for key in self.__dict__:
154 if tok.startswith("--" + key + "="):
155 val = tok[len(key)+3:]
156 setattr(self, key, val)
157 for (key, val) in self.__dict__.items():
158 if key in GenericExtractor.booleans:
159 if type(val) == type("") and val.lower() == "true":
160 setattr(self, key, True)
161 elif type(val) == type("") and val.lower() == "false":
162 setattr(self, key, False)
163 elif key in GenericExtractor.numerics:
164 setattr(self, key, int(val))
166 sys.stderr.write("irkerhook.py: no project name set!\n")
169 self.repo = self.project.lower()
170 if not self.channels:
171 self.channels = default_channels % self.__dict__
172 if self.color and self.color.lower() != "none":
173 self.activate_color(self.color)
175 def has(dirname, paths):
176 "Test for existence of a list of paths."
177 return all([os.path.exists(os.path.join(dirname, x)) for x in paths])
179 # VCS-dependent code begins here
181 class GitExtractor(GenericExtractor):
182 "Metadata extraction for the git version control system."
184 def is_repository(dirname):
185 # Must detect both ordinary and bare repositories
186 return has(dirname, [".git"]) or \
187 has(dirname, ["HEAD", "refs", "objects"])
188 def __init__(self, arguments):
189 GenericExtractor.__init__(self, arguments)
190 # Get all global config variables
191 self.project = do("git config --get irker.project")
192 self.repo = do("git config --get irker.repo")
193 self.server = do("git config --get irker.server")
194 self.channels = do("git config --get irker.channels")
195 self.tcp = do("git config --bool --get irker.tcp")
196 self.template = '%(bold)s%(project)s:%(reset)s %(green)s%(author)s%(reset)s %(repo)s:%(yellow)s%(branch)s%(reset)s * %(bold)s%(rev)s%(reset)s / %(bold)s%(files)s%(reset)s: %(logmsg)s %(brown)s%(url)s%(reset)s'
197 self.color = do("git config --get irker.color")
198 self.urlprefix = do("git config --get irker.urlprefix") or "gitweb"
199 self.filtercmd = do("git config --get irker.filtercmd")
200 # These are git-specific
201 self.refname = do("git symbolic-ref HEAD 2>/dev/null")
202 self.revformat = do("git config --get irker.revformat")
203 # The project variable defaults to the name of the repository toplevel.
205 bare = do("git config --bool --get core.bare")
206 if bare.lower() == "true":
209 keyfile = ".git/HEAD"
212 if os.path.exists(os.path.join(here, keyfile)):
213 self.project = os.path.basename(here)
216 sys.stderr.write("irkerhook.py: no git repo below root!\n")
218 here = os.path.dirname(here)
222 "Return a symbolic reference to the tip commit of the current branch."
224 def commit_factory(self, commit_id):
225 "Make a Commit object holding data for a specified commit ID."
226 commit = Commit(self, commit_id)
227 commit.branch = os.path.basename(self.refname)
228 # Compute a description for the revision
229 if self.revformat == 'raw':
230 commit.rev = commit.commit
231 elif self.revformat == 'short':
233 else: # self.revformat == 'describe'
234 commit.rev = do("git describe %s 2>/dev/null" % shellquote(commit.commit))
236 commit.rev = commit.commit[:12]
237 # Extract the meta-information for the commit
238 commit.files = do("git diff-tree -r --name-only " + shellquote(commit.commit))
239 commit.files = " ".join(commit.files.strip().split("\n")[1:])
240 # Design choice: for git we ship only the first line, which is
241 # conventionally supposed to be a summary of the commit. Under
242 # other VCSes a different choice may be appropriate.
243 metainfo = do("git log -1 '--pretty=format:%an <%ae>|%s' " + shellquote(commit.commit))
244 (commit.author, commit.logmsg) = metainfo.split("|")
245 commit.mail = commit.author.split()[-1].strip("<>")
246 # This discards the part of the author's address after @.
247 # Might be be nice to ship the full email address, if not
248 # for spammers' address harvesters - getting this wrong
249 # would make the freenode #commits channel into harvester heaven.
250 commit.author = commit.mail.split("@")[0]
253 class SvnExtractor(GenericExtractor):
254 "Metadata extraction for the svn version control system."
256 def is_repository(dirname):
257 return has(dirname, ["format", "hooks", "locks"])
258 def __init__(self, arguments):
259 GenericExtractor.__init__(self, arguments)
260 # Some things we need to have before metadata queries will work
261 self.repository = '.'
262 for tok in arguments:
263 if tok.startswith("--repository="):
264 self.repository = tok[13:]
265 self.project = os.path.basename(self.repository)
266 self.template = '%(bold)s%(project)s%(reset)s: %(green)s%(author)s%(reset)s %(repo)s * %(bold)s%(rev)s%(reset)s / %(bold)s%(files)s%(reset)s: %(logmsg)s %(brown)s%(url)s%(reset)s'
267 self.urlprefix = "viewcvs"
268 self.load_preferences(os.path.join(self.repository, "irker.conf"))
271 sys.stderr.write("irker: under svn, hook requires a commit argument.\n")
273 def commit_factory(self, commit_id):
275 commit = Commit(self, commit_id)
277 commit.rev = "r%s" % self.id
278 commit.author = self.svnlook("author")
279 commit.files = self.svnlook("dirs-changed").strip().replace("\n", " ")
280 commit.logmsg = self.svnlook("log")
282 def svnlook(self, info):
283 return do("svnlook %s %s --revision %s" % (shellquote(info), shellquote(self.repository), shellquote(self.id)))
285 class HgExtractor(GenericExtractor):
286 "Metadata extraction for the Mercurial version control system."
288 def is_repository(directory):
289 return has(directory, [".hg"])
290 def __init__(self, arguments):
291 # This fiddling with arguments is necessary since the Mercurial hook can
292 # be run in two different ways: either directly via Python (in which
293 # case hg should be pointed to the hg_hook function below) or as a
294 # script (in which case the normal __main__ block at the end of this
295 # file is exercised). In the first case, we already get repository and
296 # ui objects from Mercurial, in the second case, we have to create them
297 # from the root path.
298 self.repository = None
299 if arguments and type(arguments[0]) == type(()):
300 # Called from hg_hook function
301 ui, self.repository = arguments[0]
302 arguments = [] # Should not be processed further by do_overrides
304 # Called from command line: create repo/ui objects
305 from mercurial import hg, ui as uimod
308 for tok in arguments:
309 if tok.startswith('--repository='):
312 ui.readconfig(os.path.join(repopath, '.hg', 'hgrc'), repopath)
313 self.repository = hg.repository(ui, repopath)
315 GenericExtractor.__init__(self, arguments)
316 # Extract global values from the hg configuration file(s)
317 self.project = ui.config('irker', 'project')
318 self.repo = ui.config('irker', 'repo')
319 self.server = ui.config('irker', 'server')
320 self.channels = ui.config('irker', 'channels')
321 self.tcp = str(ui.configbool('irker', 'tcp')) # converted to bool again in do_overrides
322 self.template = '%(bold)s%(project)s:%(reset)s %(green)s%(author)s%(reset)s %(repo)s:%(yellow)s%(branch)s%(reset)s * %(bold)s%(rev)s%(reset)s / %(bold)s%(files)s%(reset)s: %(logmsg)s %(brown)s%(url)s%(reset)s'
323 self.color = ui.config('irker', 'color')
324 self.urlprefix = (ui.config('irker', 'urlprefix') or
325 ui.config('web', 'baseurl') or '')
327 self.urlprefix = self.urlprefix.rstrip('/') + '/rev'
328 # self.commit is appended to this by do_overrides
330 self.project = os.path.basename(self.repository.root.rstrip('/'))
333 "Return a symbolic reference to the tip commit of the current branch."
335 def commit_factory(self, commit_id):
336 "Make a Commit object holding data for a specified commit ID."
337 from mercurial.node import short
338 from mercurial.templatefilters import person
339 node = self.repository.lookup(commit_id)
340 commit = Commit(self, short(node))
341 # Extract commit-specific values from a "context" object
342 ctx = self.repository.changectx(node)
343 commit.rev = '%d:%s' % (ctx.rev(), commit.commit)
344 commit.branch = ctx.branch()
345 commit.author = person(ctx.user())
346 commit.logmsg = ctx.description()
347 # Extract changed files from status against first parent
348 st = self.repository.status(ctx.p1().node(), ctx.node())
349 commit.files = ' '.join(st[0] + st[1] + st[2])
352 def hg_hook(ui, repo, **kwds):
353 # To be called from a Mercurial "commit" or "incoming" hook. Example
356 # incoming.irker = python:/path/to/irkerhook.py:hg_hook
357 extractor = HgExtractor([(ui, repo)])
358 ship(extractor, kwds['node'], False)
360 # The files we use to identify a Subversion repo might occur as content
361 # in a git or hg repo, but the special subdirectories for those are more
362 # reliable indicators. So test for Subversion last.
363 extractors = [GitExtractor, HgExtractor, SvnExtractor]
365 # VCS-dependent code ends here
367 def ship(extractor, commit, debug):
368 "Ship a notification for the specified commit."
369 metadata = extractor.commit_factory(commit)
371 # This is where we apply filtering
372 if extractor.filtercmd:
373 cmd = '%s %s' % (shellquote(extractor.filtercmd),
374 shellquote(json.dumps(metadata.__dict__)))
375 data = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read()
377 metadata.__dict__.update(json.loads(data))
379 sys.stderr.write("irkerhook.py: could not decode JSON: %s\n" % data)
382 # Message reduction. The assumption here is that IRC can't handle
383 # lines more than 510 characters long. If we exceed that length, we
384 # try knocking out the file list, on the theory that for notification
385 # purposes the commit text is more important. If it's still too long
386 # there's nothing much can be done other than ship it expecting the IRC
387 # server to truncate.
388 privmsg = str(metadata)
389 if len(privmsg) > 510:
391 privmsg = str(metadata)
393 # Anti-spamming guard. It's deliberate that we get maxchannels not from
394 # the user-filtered metadata but from the extractor data - means repo
395 # administrators can lock in that setting.
396 channels = metadata.channels.split(",")
397 if extractor.maxchannels != 0:
398 channels = channels[:extractor.maxchannels]
401 message = json.dumps({"to": channels, "privmsg": privmsg})
408 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
409 sock.connect((extractor.server or default_server, IRKER_PORT))
410 sock.sendall(message + "\n")
415 sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
416 sock.sendto(message + "\n", (extractor.server or default_server, IRKER_PORT))
419 except socket.error, e:
420 sys.stderr.write("%s\n" % e)
422 if __name__ == "__main__":
424 repository = os.getcwd()
426 for arg in sys.argv[1:]:
430 print "irkerhook.py: version", version
432 elif arg.startswith("--repository="):
433 repository = arg[13:]
434 elif not arg.startswith("--"):
437 # Figure out which extractor we should be using
438 for candidate in extractors:
439 if candidate.is_repository(repository):
443 sys.stderr.write("irkerhook: cannot identify a repository type.\n")
445 extractor = cls(sys.argv[1:])
449 commits = [extractor.head()]
450 for commit in commits:
451 ship(extractor, commit, not notify)