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 branch = b.pocketToGit(pocket)
224 tree = logAndRun(['git', 'ls-tree', branch],
225 cwd=superproject).strip()
227 tree_items = dict((k, v) for (v, k) in (x.split("\t") for x in tree.split("\n")))
229 created = not (package in tree_items)
231 tree_items[package] = "160000 commit "+commit
233 # If "created" is true, we need to check if the package is
234 # mentioned in .gitmodules, and add it if not.
236 gitmodules = logAndRun(['git', 'cat-file', 'blob', '%s:.gitmodules' % (branch)],
238 if ('[submodule "%s"]' % (package)) not in gitmodules.split("\n"):
239 gitmodules += """[submodule "%s"]
241 \turl = ../packages/%s.git
242 """ % (package, package, package)
243 gitmodules_hash = logAndRun(['git', 'hash-object', '-w', '--stdin'],
245 stdin_str=gitmodules).strip()
246 tree_items[package] = "100644 blob "+gitmodules_hash
248 new_tree = "\n".join("%s\t%s" % (v, k) for (k, v) in tree_items.iteritems())
250 new_tree_id = logAndRun(['git', 'mktree', '--missing'],
252 stdin_str=new_tree).strip()
255 commit_msg = 'Add %s at version %s'
257 commit_msg = 'Update %s to version %s'
258 commit_msg = ((commit_msg + '\n\n'
259 'Requested by %s') % (package,
260 version.full_version,
262 new_commit = logAndRun(
263 ['git', 'commit-tree', new_tree_id, '-p', branch],
266 stdin_str=commit_msg).strip()
269 ['git', 'update-ref', 'refs/heads/%s' % branch, new_commit],
273 def makeReadable(workdir):
274 os.chmod(workdir, 0755)
276 @contextlib.contextmanager
277 def packageWorkdir(package, commit, build_id):
278 """Checkout the package in a temporary working directory.
280 This context manager returns that working directory. The requested
281 package is checked out into a subdirectory of the working
282 directory with the same name as the package.
284 When the context wrapped with this context manager is exited, the
285 working directory is automatically deleted.
287 workdir = tempfile.mkdtemp(prefix=("b%d-" % build_id))
289 p_archive = subprocess.Popen(
291 '--remote=file://%s' % b.getRepo(package),
292 '--prefix=%s/' % package,
295 stdout=subprocess.PIPE,
297 p_tar = subprocess.Popen(
299 stdin=p_archive.stdout,
307 shutil.rmtree(workdir)
310 """Deal with items in the build queue.
312 When triggered, iterate over build queue items one at a time,
313 until there are no more pending build jobs.
318 stage = 'processing incoming job'
319 queue = os.listdir(b._QUEUE_DIR)
324 job = open(os.path.join(b._QUEUE_DIR, build)).read().strip()
325 pocket, package, commit, principal = job.split()
327 database.session.begin()
328 db = database.Build()
332 db.principal = principal
333 database.session.save_or_update(db)
334 database.session.commit()
336 database.session.begin()
338 logdir = os.path.join(b._LOG_DIR, str(db.build_id))
339 if not os.path.exists(logdir):
343 db.failed_stage = 'validating job'
344 # Don't expand the commit in the DB until we're sure the user
345 # isn't trying to be tricky.
346 b.ensureValidPackage(package)
348 logfile = open(os.path.join(logdir, '%s.log' % db.package), 'w')
350 db.commit = commit = b.canonicalize_commit(package, commit)
351 src = b.validateBuild(pocket, package, commit)
352 version = b.getVersion(package, commit)
353 db.version = str(version)
354 b.runHook('pre-build', [str(db.build_id)])
356 env = dict(os.environ)
357 env['GIT_COMMITTER_NAME'] = config.build.tagger.name
358 env['GIT_COMMITTER_EMAIL'] = config.build.tagger.email
360 # If validateBuild returns something other than True, then
361 # it means we should copy from that pocket to our pocket.
363 # (If the validation failed, validateBuild would have
364 # raised an exception)
366 # TODO: cut out this code duplication
367 db.failed_stage = 'tagging submodule before copying package'
368 tagSubmodule(pocket, package, commit, principal, version, env)
369 db.failed_stage = 'updating submodule branches before copying package'
370 updateSubmoduleBranch(pocket, package, commit)
371 db.failed_stage = 'updating superproject before copying package'
372 updateSuperproject(pocket, package, commit, principal, version, env)
373 db.failed_stage = 'copying package from another pocket'
374 aptCopy(package, commit, pocket, src)
376 # If we can't copy the package from somewhere, but
377 # validateBuild didn't raise an exception, then we need to
378 # do the build ourselves
380 db.failed_stage = 'checking out package source'
381 with packageWorkdir(package, commit, db.build_id) as workdir:
382 db.failed_stage = 'preparing source package'
383 packagedir = os.path.join(workdir, package)
385 # We should be more clever about dealing with
386 # things like non-Debian-native packages than we
389 # If we were, we could use debuild and get nice
390 # environment scrubbing. Since we're not, debuild
391 # complains about not having an orig.tar.gz
392 logAndRun(['dpkg-buildpackage', '-us', '-uc', '-S'],
395 db.failed_stage = 'building binary packages'
396 sbuildAll(package, commit, b.pocketToDistro(pocket), workdir)
397 db.failed_stage = 'tagging submodule'
398 tagSubmodule(pocket, package, commit, principal, version, env)
399 db.failed_stage = 'updating submodule branches'
400 updateSubmoduleBranch(pocket, package, commit)
401 db.failed_stage = 'updating superproject'
402 updateSuperproject(pocket, package, commit, principal, version, env)
403 db.failed_stage = 'relaxing permissions on workdir'
404 makeReadable(workdir)
405 db.failed_stage = 'uploading packages to apt repo'
406 uploadBuild(pocket, workdir)
408 db.failed_stage = 'cleaning up'
410 db.traceback = traceback.format_exc()
413 db.failed_stage = None
415 if logfile is not None:
418 database.session.save_or_update(db)
419 database.session.commit()
421 # Finally, now that everything is done, remove the
423 os.unlink(os.path.join(b._QUEUE_DIR, build))
426 b.runHook('post-build', [str(db.build_id)])
428 b.runHook('failed-build', [str(db.build_id)])
430 class Invirtibuilder(pyinotify.ProcessEvent):
431 """Process inotify triggers to build new packages."""
432 def process_default(self, event):
433 """Handle an inotify event.
435 When an inotify event comes in, trigger the builder.
441 """Initialize the inotifications and start the main loop."""
444 watch_manager = pyinotify.WatchManager()
445 invirtibuilder = Invirtibuilder()
446 notifier = pyinotify.Notifier(watch_manager, invirtibuilder)
447 watch_manager.add_watch(b._QUEUE_DIR,
448 pyinotify.EventsCodes.ALL_FLAGS['IN_CREATE'] |
449 pyinotify.EventsCodes.ALL_FLAGS['IN_MOVED_TO'])
451 # Before inotifying, run any pending builds; otherwise we won't
452 # get notified for them.
456 notifier.process_events()
457 if notifier.check_events():
458 notifier.read_events()
461 if __name__ == '__main__':