3 """Process the Invirt build queue.
5 The Invirtibuilder handles package builds and uploads. On demand, it
6 attempts to build a particular package.
8 If the build succeeds, the new version of the package is uploaded to
9 the apt repository, tagged in its git repository, and the Invirt
10 superproject is updated to point at the new version.
12 If the build fails, the Invirtibuilder sends mail with the build log.
14 The build queue is tracked via files in /var/lib/invirt-dev/queue. In
15 order to maintain ordering, all filenames in that directory are the
16 timestamp of their creation time.
18 Each queue file contains a file of the form
20 pocket package hash principal
22 where pocket is one of the pockets globally configured in
23 build.pockets. For instance, the pockets in XVM are "prod" and "dev".
25 principal is the Kerberos principal that requested the build.
29 from __future__ import with_statement
42 from debian_bundle import deb822
44 import invirt.builder as b
45 import invirt.common as c
46 from invirt import database
47 from invirt.config import structs as config
52 def logAndRun(cmd, *args, **kwargs):
53 # Always grab stdout, even if the caller doesn't need it.
54 # TODO: don't slurp it all into memory in that case.
55 if 'stdout' in kwargs and kwargs['stdout'] is None:
57 kwargs['stderr'] = logfile
58 logfile.write('---> Ran %s\n' % (cmd, ))
59 if 'stdin_str' in kwargs:
60 logfile.write('STDIN:\n')
61 logfile.write(kwargs['stdin_str'])
62 logfile.write('STDERR:\n')
63 output = c.captureOutput(cmd, *args, **kwargs)
64 logfile.write('STDOUT:\n')
68 def getControl(package, ref):
69 """Get the parsed debian/control file for a given package.
71 This returns a list of debian_bundle.deb822.Deb822 objects, one
72 for each section of the debian/control file. Each Deb822 object
73 acts roughly like a dict.
75 return deb822.Deb822.iter_paragraphs(
76 b.getGitFile(package, ref, 'debian/control').split('\n'))
79 def getBinaries(package, ref):
80 """Get a list of binary packages in a package at a given ref."""
81 return [p['Package'] for p in getControl(package, ref)
85 def getArches(package, ref):
86 """Get the set of all architectures in any binary package."""
88 for section in getControl(package, ref):
89 if 'Architecture' in section:
90 arches.update(section['Architecture'].split())
94 def getDscName(package, ref):
95 """Return the .dsc file that will be generated for this package."""
96 v = b.getVersion(package, ref)
98 v_str = '%s-%s' % (v.upstream_version,
101 v_str = v.upstream_version
102 return '%s_%s.dsc' % (
107 def sanitizeVersion(version):
108 """Sanitize a Debian package version for use as a git tag.
110 This function strips the epoch from the version number and
111 replaces any tildes with underscores."""
112 if version.debian_version:
113 v = '%s-%s' % (version.upstream_version,
114 version.debian_version)
116 v = version.upstream_version
117 return v.replace('~', '_')
120 def aptCopy(package, commit, dst_pocket, src_pocket):
121 """Copy a package from one pocket to another."""
122 binaries = getBinaries(package, commit)
123 logAndRun(['reprepro-env', 'copy',
124 b.pocketToApt(dst_pocket),
125 b.pocketToApt(src_pocket),
129 def sbuild(package, ref, distro, arch, workdir, arch_all=False):
130 """Build a package for a particular architecture and distro."""
131 # We append a suffix like ~ubuntu8.04 to differentiate the same
132 # version built for multiple distros
133 nmutag = b.distroToSuffix(distro)
134 env = os.environ.copy()
135 env['NMUTAG'] = nmutag
136 maintainer = "Invirt Autobuilder <%s>" % (config.contact,)
137 # Run sbuild with a hack in place to append arbitrary versions
138 args = ['perl', '-I/usr/share/invirt-dev', '-MSbuildHack',
140 '--binNMU=171717', '--make-binNMU=Build with sbuild',
141 '-v', '-d', distro, '-m', maintainer,
145 args.append(getDscName(package, ref))
146 logAndRun(args, cwd=workdir, env=env)
149 def sbuildAll(package, ref, distro, workdir):
150 """Build a package for all architectures it supports."""
151 arches = getArches(package, ref)
152 if 'all' in arches or 'any' in arches or 'amd64' in arches:
153 sbuild(package, ref, distro, 'amd64', workdir, arch_all=True)
154 if 'any' in arches or 'i386' in arches:
155 sbuild(package, ref, distro, 'i386', workdir)
158 def tagSubmodule(pocket, package, commit, principal, version, env):
159 """Tag a new version of a submodule.
161 If this pocket does not allow_backtracking, then this will create
162 a new tag of the version at ref.
164 This function doesn't need to care about lock
165 contention. git-receive-pack updates one ref at a time, and only
166 takes out a lock for that ref after it's passed the update
167 hook. Because we reject pushes to tags in the update hook, no push
168 can ever take out a lock on any tags.
170 I'm sure that long description gives you great confidence in the
171 legitimacy of my reasoning.
173 if not config.build.pockets[pocket].get('allow_backtracking', False):
174 branch = b.pocketToGit(pocket)
175 tag_msg = ('Tag %s of %s\n\n'
176 'Requested by %s' % (version.full_version,
181 ['git', 'tag', '-m', tag_msg, '--', sanitizeVersion(version),
184 cwd=b.getRepo(package))
187 def updateSubmoduleBranch(pocket, package, commit):
188 """Update the appropriately named branch in the submodule."""
189 branch = b.pocketToGit(pocket)
191 ['git', 'update-ref', 'refs/heads/%s' % branch, commit], cwd=b.getRepo(package))
194 def uploadBuild(pocket, workdir):
195 """Upload all build products in the work directory."""
196 force = config.build.pockets[pocket].get('allow_backtracking', False)
197 apt = b.pocketToApt(pocket)
198 for changes in glob.glob(os.path.join(workdir, '*.changes')):
199 upload = ['reprepro-env', '--ignore=wrongdistribution',
200 'include', apt, changes]
203 except subprocess.CalledProcessError, e:
206 changelog = deb822.Changes(open(changes).read())
207 packages = set(changelog['Binary'].split())
208 packages.add(changelog['Source'])
209 for package in packages:
210 logAndRun(['reprepro-env', 'remove', apt, package])
214 def updateSuperproject(pocket, package, commit, principal, version, env):
215 """Update the superproject.
217 This will create a new commit on the branch for the given pocket
218 that sets the commit for the package submodule to commit.
220 Note that there's no locking issue here, because we disallow all
221 pushes to the superproject.
223 superproject = os.path.join(b._REPO_DIR, 'invirt/packages.git')
224 branch = b.pocketToGit(pocket)
225 tree = logAndRun(['git', 'ls-tree', branch],
226 cwd=superproject).strip()
228 tree_items = dict((k, v) for (v, k) in (x.split("\t") for x in tree.split("\n")))
230 created = not (package in tree_items)
232 tree_items[package] = "160000 commit "+commit
234 # If "created" is true, we need to check if the package is
235 # mentioned in .gitmodules, and add it if not.
237 gitmodules = logAndRun(['git', 'cat-file', 'blob', '%s:.gitmodules' % (branch)],
239 if ('[submodule "%s"]' % (package)) not in gitmodules.split("\n"):
240 gitmodules += """[submodule "%s"]
242 \turl = ../packages/%s.git
243 """ % (package, package, package)
244 gitmodules_hash = logAndRun(['git', 'hash-object', '-w', '--stdin'],
246 stdin_str=gitmodules).strip()
247 tree_items[package] = "100644 blob "+gitmodules_hash
249 new_tree = "\n".join("%s\t%s" % (v, k) for (k, v) in tree_items.iteritems())
251 new_tree_id = logAndRun(['git', 'mktree', '--missing'],
253 stdin_str=new_tree).strip()
256 commit_msg = 'Add %s at version %s'
258 commit_msg = 'Update %s to version %s'
259 commit_msg = ((commit_msg + '\n\n'
260 'Requested by %s') % (package,
261 version.full_version,
263 new_commit = logAndRun(
264 ['git', 'commit-tree', new_tree_id, '-p', branch],
267 stdin_str=commit_msg).strip()
270 ['git', 'update-ref', 'refs/heads/%s' % branch, new_commit],
274 def makeReadable(workdir):
275 os.chmod(workdir, 0755)
277 @contextlib.contextmanager
278 def packageWorkdir(package, commit, build_id):
279 """Checkout the package in a temporary working directory.
281 This context manager returns that working directory. The requested
282 package is checked out into a subdirectory of the working
283 directory with the same name as the package.
285 When the context wrapped with this context manager is exited, the
286 working directory is automatically deleted.
288 workdir = tempfile.mkdtemp(prefix=("b%d-" % build_id))
290 p_archive = subprocess.Popen(
291 ['git', '--git-dir=%s' % (b.getRepo(package),),
293 '--prefix=%s/' % package,
296 stdout=subprocess.PIPE,
298 p_tar = subprocess.Popen(
300 stdin=p_archive.stdout,
308 shutil.rmtree(workdir)
311 """Deal with items in the build queue.
313 When triggered, iterate over build queue items one at a time,
314 until there are no more pending build jobs.
319 stage = 'processing incoming job'
320 queue = os.listdir(b._QUEUE_DIR)
325 job = open(os.path.join(b._QUEUE_DIR, build)).read().strip()
326 pocket, package, commit, principal = job.split()
328 database.session.begin()
329 db = database.Build()
333 db.principal = principal
334 database.session.add(db)
335 database.session.commit()
337 database.session.begin()
339 logdir = os.path.join(b._LOG_DIR, str(db.build_id))
340 if not os.path.exists(logdir):
344 db.failed_stage = 'validating job'
345 # Don't expand the commit in the DB until we're sure the user
346 # isn't trying to be tricky.
347 b.ensureValidPackage(package)
349 logfile = open(os.path.join(logdir, '%s.log' % db.package), 'w')
351 db.commit = commit = b.canonicalize_commit(package, commit)
352 src = b.validateBuild(pocket, package, commit)
353 version = b.getVersion(package, commit)
354 db.version = str(version)
355 b.runHook('pre-build', [str(db.build_id)])
357 env = dict(os.environ)
358 env['GIT_COMMITTER_NAME'] = config.build.tagger.name
359 env['GIT_COMMITTER_EMAIL'] = config.build.tagger.email
361 # If validateBuild returns something other than True, then
362 # it means we should copy from that pocket to our pocket.
364 # (If the validation failed, validateBuild would have
365 # raised an exception)
367 # TODO: cut out this code duplication
368 db.failed_stage = 'tagging submodule before copying package'
369 tagSubmodule(pocket, package, commit, principal, version, env)
370 db.failed_stage = 'updating submodule branches before copying package'
371 updateSubmoduleBranch(pocket, package, commit)
372 db.failed_stage = 'updating superproject before copying package'
373 updateSuperproject(pocket, package, commit, principal, version, env)
374 db.failed_stage = 'copying package from another pocket'
375 aptCopy(package, commit, pocket, src)
377 # If we can't copy the package from somewhere, but
378 # validateBuild didn't raise an exception, then we need to
379 # do the build ourselves
381 db.failed_stage = 'checking out package source'
382 with packageWorkdir(package, commit, db.build_id) as workdir:
383 db.failed_stage = 'preparing source package'
384 packagedir = os.path.join(workdir, package)
386 # We should be more clever about dealing with
387 # things like non-Debian-native packages than we
390 # If we were, we could use debuild and get nice
391 # environment scrubbing. Since we're not, debuild
392 # complains about not having an orig.tar.gz
393 logAndRun(['dpkg-buildpackage', '-us', '-uc', '-S'],
396 db.failed_stage = 'building binary packages'
397 sbuildAll(package, commit, b.pocketToDistro(pocket), workdir)
398 db.failed_stage = 'tagging submodule'
399 tagSubmodule(pocket, package, commit, principal, version, env)
400 db.failed_stage = 'updating submodule branches'
401 updateSubmoduleBranch(pocket, package, commit)
402 db.failed_stage = 'updating superproject'
403 updateSuperproject(pocket, package, commit, principal, version, env)
404 db.failed_stage = 'relaxing permissions on workdir'
405 makeReadable(workdir)
406 db.failed_stage = 'uploading packages to apt repo'
407 uploadBuild(pocket, workdir)
409 db.failed_stage = 'cleaning up'
411 db.traceback = traceback.format_exc()
414 db.failed_stage = None
416 if logfile is not None:
419 database.session.add(db)
420 database.session.commit()
422 # Finally, now that everything is done, remove the
424 os.unlink(os.path.join(b._QUEUE_DIR, build))
427 b.runHook('post-build', [str(db.build_id)])
429 b.runHook('failed-build', [str(db.build_id)])
431 class Invirtibuilder(pyinotify.ProcessEvent):
432 """Process inotify triggers to build new packages."""
433 def process_default(self, event):
434 """Handle an inotify event.
436 When an inotify event comes in, trigger the builder.
442 """Initialize the inotifications and start the main loop."""
445 watch_manager = pyinotify.WatchManager()
446 invirtibuilder = Invirtibuilder()
447 notifier = pyinotify.Notifier(watch_manager, invirtibuilder)
448 watch_manager.add_watch(b._QUEUE_DIR,
449 pyinotify.EventsCodes.ALL_FLAGS['IN_CREATE'] |
450 pyinotify.EventsCodes.ALL_FLAGS['IN_MOVED_TO'])
452 # Before inotifying, run any pending builds; otherwise we won't
453 # get notified for them.
457 notifier.process_events()
458 if notifier.check_events():
459 notifier.read_events()
462 if __name__ == '__main__':