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
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, '--arch', arch]
144 args.append(getDscName(package, ref))
145 logAndRun(args, cwd=workdir, env=env)
148 def sbuildAll(package, ref, distro, workdir):
149 """Build a package for all architectures it supports."""
150 arches = getArches(package, ref)
151 if 'all' in arches or 'any' in arches or 'amd64' in arches:
152 sbuild(package, ref, distro, 'amd64', workdir, arch_all=True)
153 if 'any' in arches or 'i386' in arches:
154 sbuild(package, ref, distro, 'i386', workdir)
157 def tagSubmodule(pocket, package, commit, principal, version, env):
158 """Tag a new version of a submodule.
160 If this pocket does not allow_backtracking, then this will create
161 a new tag of the version at ref.
163 This function doesn't need to care about lock
164 contention. git-receive-pack updates one ref at a time, and only
165 takes out a lock for that ref after it's passed the update
166 hook. Because we reject pushes to tags in the update hook, no push
167 can ever take out a lock on any tags.
169 I'm sure that long description gives you great confidence in the
170 legitimacy of my reasoning.
172 if not config.build.pockets[pocket].get('allow_backtracking', False):
173 branch = b.pocketToGit(pocket)
174 tag_msg = ('Tag %s of %s\n\n'
175 'Requested by %s' % (version.full_version,
180 ['git', 'tag', '-m', tag_msg, '--', sanitizeVersion(version),
183 cwd=b.getRepo(package))
186 def updateSubmoduleBranch(pocket, package, commit):
187 """Update the appropriately named branch in the submodule."""
188 branch = b.pocketToGit(pocket)
190 ['git', 'update-ref', 'refs/heads/%s' % branch, commit], cwd=b.getRepo(package))
193 def uploadBuild(pocket, workdir):
194 """Upload all build products in the work directory."""
195 force = config.build.pockets[pocket].get('allow_backtracking', False)
196 apt = b.pocketToApt(pocket)
197 for changes in glob.glob(os.path.join(workdir, '*.changes')):
198 upload = ['reprepro-env', '--ignore=wrongdistribution',
199 'include', apt, changes]
202 except subprocess.CalledProcessError, e:
205 changelog = deb822.Changes(open(changes).read())
206 packages = set(changelog['Binary'].split())
207 packages.add(changelog['Source'])
208 for package in packages:
209 logAndRun(['reprepro-env', 'remove', apt, package])
213 def updateSuperproject(pocket, package, commit, principal, version, env):
214 """Update the superproject.
216 This will create a new commit on the branch for the given pocket
217 that sets the commit for the package submodule to commit.
219 Note that there's no locking issue here, because we disallow all
220 pushes to the superproject.
222 superproject = os.path.join(b._REPO_DIR, 'invirt/packages.git')
223 if not b.pocketExists(pocket, superproject):
224 raise Exception("Super-repository does not contain pocket branch '%s'. Create it first." % pocket)
226 branch = b.pocketToGit(pocket)
227 tree = logAndRun(['git', 'ls-tree', branch],
228 cwd=superproject).strip()
230 tree_items = dict((k, v) for (v, k) in (x.split("\t") for x in tree.split("\n")))
232 created = not (package in tree_items)
234 tree_items[package] = "160000 commit "+commit
236 # If "created" is true, we need to check if the package is
237 # mentioned in .gitmodules, and add it if not.
239 gitmodules = logAndRun(['git', 'cat-file', 'blob', '%s:.gitmodules' % (branch)],
241 if ('[submodule "%s"]' % (package)) not in gitmodules.split("\n"):
242 gitmodules += """[submodule "%s"]
244 \turl = ../packages/%s.git
245 """ % (package, package, package)
246 gitmodules_hash = logAndRun(['git', 'hash-object', '-w', '--stdin'],
248 stdin_str=gitmodules).strip()
249 tree_items[package] = "100644 blob "+gitmodules_hash
251 new_tree = "\n".join("%s\t%s" % (v, k) for (k, v) in tree_items.iteritems())
253 new_tree_id = logAndRun(['git', 'mktree', '--missing'],
255 stdin_str=new_tree).strip()
258 commit_msg = 'Add %s at version %s'
260 commit_msg = 'Update %s to version %s'
261 commit_msg = ((commit_msg + '\n\n'
262 'Requested by %s') % (package,
263 version.full_version,
265 new_commit = logAndRun(
266 ['git', 'commit-tree', new_tree_id, '-p', branch],
269 stdin_str=commit_msg).strip()
272 ['git', 'update-ref', 'refs/heads/%s' % branch, new_commit],
276 def makeReadable(workdir):
277 os.chmod(workdir, 0755)
279 @contextlib.contextmanager
280 def packageWorkdir(package, commit, build_id):
281 """Checkout the package in a temporary working directory.
283 This context manager returns that working directory. The requested
284 package is checked out into a subdirectory of the working
285 directory with the same name as the package.
287 When the context wrapped with this context manager is exited, the
288 working directory is automatically deleted.
290 workdir = tempfile.mkdtemp(prefix=("b%d-" % build_id))
292 p_archive = subprocess.Popen(
293 ['git', '--git-dir=%s' % (b.getRepo(package),),
295 '--prefix=%s/' % package,
298 stdout=subprocess.PIPE,
300 p_tar = subprocess.Popen(
302 stdin=p_archive.stdout,
310 shutil.rmtree(workdir)
313 """Deal with items in the build queue.
315 When triggered, iterate over build queue items one at a time,
316 until there are no more pending build jobs.
321 stage = 'processing incoming job'
322 queue = os.listdir(b._QUEUE_DIR)
327 job = open(os.path.join(b._QUEUE_DIR, build)).read().strip()
328 pocket, package, commit, principal = job.split()
330 database.session.begin()
331 db = database.Build()
335 db.principal = principal
336 database.session.save_or_update(db)
337 database.session.commit()
339 database.session.begin()
341 logdir = os.path.join(b._LOG_DIR, str(db.build_id))
342 if not os.path.exists(logdir):
346 db.failed_stage = 'validating job'
347 # Don't expand the commit in the DB until we're sure the user
348 # isn't trying to be tricky.
349 b.ensureValidPackage(package)
351 logfile = open(os.path.join(logdir, '%s.log' % db.package), 'w')
353 db.commit = commit = b.canonicalize_commit(package, commit)
354 src = b.validateBuild(pocket, package, commit)
355 version = b.getVersion(package, commit)
356 db.version = str(version)
357 b.runHook('pre-build', [str(db.build_id)])
359 env = dict(os.environ)
360 env['GIT_COMMITTER_NAME'] = config.build.tagger.name
361 env['GIT_COMMITTER_EMAIL'] = config.build.tagger.email
363 # If validateBuild returns something other than True, then
364 # it means we should copy from that pocket to our pocket.
366 # (If the validation failed, validateBuild would have
367 # raised an exception)
369 # TODO: cut out this code duplication
370 db.failed_stage = 'tagging submodule before copying package'
371 tagSubmodule(pocket, package, commit, principal, version, env)
372 db.failed_stage = 'updating submodule branches before copying package'
373 updateSubmoduleBranch(pocket, package, commit)
374 db.failed_stage = 'updating superproject before copying package'
375 updateSuperproject(pocket, package, commit, principal, version, env)
376 db.failed_stage = 'copying package from another pocket'
377 aptCopy(package, commit, pocket, src)
379 # If we can't copy the package from somewhere, but
380 # validateBuild didn't raise an exception, then we need to
381 # do the build ourselves
383 db.failed_stage = 'checking out package source'
384 with packageWorkdir(package, commit, db.build_id) as workdir:
385 db.failed_stage = 'preparing source package'
386 packagedir = os.path.join(workdir, package)
388 # We should be more clever about dealing with
389 # things like non-Debian-native packages than we
392 # If we were, we could use debuild and get nice
393 # environment scrubbing. Since we're not, debuild
394 # complains about not having an orig.tar.gz
395 logAndRun(['schroot', '-c',
396 '%s-amd64-sbuild' % (b.pocketToDistro(pocket),),
397 '--', 'dpkg-buildpackage', '-us', '-uc', '-S'],
400 db.failed_stage = 'building binary packages'
401 sbuildAll(package, commit, b.pocketToDistro(pocket), workdir)
402 db.failed_stage = 'tagging submodule'
403 tagSubmodule(pocket, package, commit, principal, version, env)
404 db.failed_stage = 'updating submodule branches'
405 updateSubmoduleBranch(pocket, package, commit)
406 db.failed_stage = 'updating superproject'
407 updateSuperproject(pocket, package, commit, principal, version, env)
408 db.failed_stage = 'relaxing permissions on workdir'
409 makeReadable(workdir)
410 db.failed_stage = 'uploading packages to apt repo'
411 uploadBuild(pocket, workdir)
413 db.failed_stage = 'cleaning up'
415 db.traceback = traceback.format_exc()
418 db.failed_stage = None
420 if logfile is not None:
423 database.session.save_or_update(db)
424 database.session.commit()
426 # Finally, now that everything is done, remove the
428 os.unlink(os.path.join(b._QUEUE_DIR, build))
431 b.runHook('post-build', [str(db.build_id)])
433 b.runHook('failed-build', [str(db.build_id)])
435 class Invirtibuilder(pyinotify.ProcessEvent):
436 """Process inotify triggers to build new packages."""
437 def process_default(self, event):
438 """Handle an inotify event.
440 When an inotify event comes in, trigger the builder.
446 """Initialize the inotifications and start the main loop."""
449 watch_manager = pyinotify.WatchManager()
450 invirtibuilder = Invirtibuilder()
451 notifier = pyinotify.Notifier(watch_manager, invirtibuilder)
452 watch_manager.add_watch(b._QUEUE_DIR,
453 pyinotify.EventsCodes.ALL_FLAGS['IN_CREATE'] |
454 pyinotify.EventsCodes.ALL_FLAGS['IN_MOVED_TO'])
456 # Before inotifying, run any pending builds; otherwise we won't
457 # get notified for them.
461 notifier.process_events()
462 if notifier.check_events():
463 notifier.read_events()
466 if __name__ == '__main__':