| #!/usr/bin/python |
| # Copyright (c) 2011 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """ |
| A library to generate and store the manifests for cros builders to use. |
| """ |
| |
| import logging |
| import os |
| import re |
| import time |
| |
| from chromite.buildbot import constants |
| from chromite.buildbot import manifest_version |
| from chromite.lib import cros_build_lib as cros_lib |
| |
| |
| class PromoteCandidateException(Exception): |
| """Exception thrown for failure to promote manifest candidate.""" |
| pass |
| |
| |
| def _SyncGitRepo(local_dir): |
| """"Clone Given git repo |
| Args: |
| local_dir: location with repo that should be synced. |
| """ |
| cros_lib.RunCommand(['git', 'remote', 'update'], cwd=local_dir) |
| cros_lib.RunCommand(['git', 'rebase', 'origin/master'], cwd=local_dir) |
| |
| |
| class _LKGMCandidateInfo(manifest_version.VersionInfo): |
| """Class to encapsualte the chrome os lkgm candidate info |
| |
| You can instantiate this class in two ways. |
| 1)using a version file, specifically chromeos_version.sh, |
| which contains the version information. |
| 2) just passing in the 4 version components (major, minor, sp, patch and |
| revision number), |
| Args: |
| version_string: Optional version string to parse rather than from a file |
| ver_maj: major version |
| ver_min: minor version |
| ver_sp: sp version |
| ver_patch: patch version |
| ver_revision: version revision |
| version_file: version file location. |
| """ |
| LKGM_RE = '(\d+\.\d+\.\d+\.\d+)(?:-rc(\d+))?' |
| |
| def __init__(self, version_string=None, version_file=None): |
| self.ver_revision = None |
| if version_string: |
| match = re.search(self.LKGM_RE, version_string) |
| assert match, 'LKGM did not re %s' % self.LKGM_RE |
| super(_LKGMCandidateInfo, self).__init__(match.group(1), |
| incr_type='branch') |
| if match.group(2): |
| self.ver_revision = int(match.group(2)) |
| |
| else: |
| super(_LKGMCandidateInfo, self).__init__(version_file=version_file, |
| incr_type='branch') |
| if not self.ver_revision: |
| self.ver_revision = 1 |
| |
| def VersionString(self): |
| """returns the full version string of the lkgm candidate""" |
| return '%s.%s.%s.%s-rc%s' % (self.ver_maj, self.ver_min, self.ver_sp, |
| self.ver_patch, self.ver_revision) |
| |
| @classmethod |
| def VersionCompare(cls, version_string): |
| """Useful method to return a comparable version of a LKGM string.""" |
| lkgm = cls(version_string) |
| return map(int, [lkgm.ver_maj, lkgm.ver_min, lkgm.ver_sp, lkgm.ver_patch, |
| lkgm.ver_revision]) |
| |
| def IncrementVersion(self, message=None, dry_run=False): |
| """Increments the version by incrementing the revision #.""" |
| self.ver_revision += 1 |
| return self.VersionString() |
| |
| |
| class LKGMManager(manifest_version.BuildSpecsManager): |
| """A Class to manage lkgm candidates and their states. |
| |
| Vars: |
| lkgm_subdir: Subdirectory within manifest repo to store candidates. |
| """ |
| # Max timeout before assuming other builders have failed for Chrome PFQ. |
| # Longer as there is little to lose for Chrome PFQ waiting and arm |
| # has been slower often. |
| CHROME_LONG_MAX_TIMEOUT_SECONDS = 3600 |
| # Max timeout before assuming other builders have failed. |
| LONG_MAX_TIMEOUT_SECONDS = 1200 |
| MAX_TIMEOUT_SECONDS = 300 |
| # Polling timeout for checking git repo for other build statuses. |
| SLEEP_TIMEOUT = 30 |
| |
| # Sub-directories for LKGM and Chrome LKGM's. |
| LKGM_SUBDIR = 'LKGM-candidates' |
| CHROME_PFQ_SUBDIR = 'chrome-LKGM-candidates' |
| |
| # Set path in repository to keep latest approved LKGM manifest. |
| LKGM_PATH = 'LKGM/lkgm.xml' |
| |
| @classmethod |
| def GetAbsolutePathToLKGM(cls): |
| """Returns the path to the LKGM file blessed by builders.""" |
| return os.path.join(cls._TMP_MANIFEST_DIR, cls.LKGM_PATH) |
| |
| @classmethod |
| def GetLKGMVersion(cls): |
| """Returns the full buildspec version the LKGM corresponds to.""" |
| realpath = os.path.realpath(cls.GetAbsolutePathToLKGM()) |
| version, _ = os.path.splitext(os.path.basename(realpath)) |
| return version |
| |
| def __init__(self, source_dir, checkout_repo, manifest_repo, branch, |
| build_name, build_type, dry_run=True): |
| """Initialize an LKGM Manager. |
| |
| Args: |
| build_type: Type of build. Must be a pfq type. |
| Other args see manifest_version.BuildSpecsManager. |
| """ |
| super(LKGMManager, self).__init__( |
| source_dir=source_dir, checkout_repo=checkout_repo, |
| manifest_repo=manifest_repo, branch=branch, build_name=build_name, |
| incr_type='branch', dry_run=dry_run) |
| |
| self.compare_versions_fn = _LKGMCandidateInfo.VersionCompare |
| self.build_type = build_type |
| if self.build_type == constants.CHROME_PFQ_TYPE: |
| self.lkgm_subdir = self.CHROME_PFQ_SUBDIR |
| else: |
| assert self.build_type, constants.PFQ_TYPE |
| self.lkgm_subdir = self.LKGM_SUBDIR |
| |
| def _RunLambdaWithTimeout(self, function_to_run, use_long_timeout=False): |
| """Runs function_to_run until it returns a value or timeout is reached.""" |
| function_success = False |
| start_time = time.time() |
| max_timeout = self.MAX_TIMEOUT_SECONDS |
| if use_long_timeout: |
| if self.build_type == constants.PFQ_TYPE: |
| max_timeout = self.LONG_MAX_TIMEOUT_SECONDS |
| else: |
| max_timeout = self.CHROME_LONG_MAX_TIMEOUT_SECONDS |
| |
| # Monitor the repo until all builders report in or we've waited too long. |
| while (time.time() - start_time) < max_timeout: |
| function_success = function_to_run() |
| if function_success: |
| break |
| else: |
| time.sleep(self.SLEEP_TIMEOUT) |
| |
| return function_success |
| |
| def _LoadSpecs(self, version_info): |
| """Loads the specifications from the working directory. |
| Args: |
| version_info: Info class for version information of cros. |
| """ |
| super(LKGMManager, self)._LoadSpecs(version_info, self.lkgm_subdir) |
| |
| def _GetLatestCandidateByVersion(self, version_info): |
| """Returns the latest lkgm candidate corresponding to the version file. |
| Args: |
| version_info: Info class for version information of cros. |
| """ |
| if self.all: |
| matched_lkgms = filter( |
| lambda ver: ver.startswith(version_info.VersionString()), self.all) |
| if matched_lkgms: |
| return _LKGMCandidateInfo(sorted(matched_lkgms, |
| key=self.compare_versions_fn)[-1]) |
| |
| return _LKGMCandidateInfo(version_info.VersionString()) |
| |
| def CreateNewCandidate(self, force_version=None, retries=3): |
| """Gets the version number of the next build spec to build. |
| Args: |
| force_version: Forces us to use this version. |
| retries: Number of retries for updating the status. |
| Returns: |
| next_build: a string of the next build number for the builder to consume |
| or None in case of no need to build. |
| Raises: |
| GenerateBuildSpecException in case of failure to generate a buildspec |
| """ |
| last_error = None |
| for _ in range(0, retries + 1): |
| try: |
| version_info = self._GetCurrentVersionInfo() |
| self._LoadSpecs(version_info) |
| lkgm_info = self._GetLatestCandidateByVersion(version_info) |
| if force_version: |
| return self.GetLocalManifest(force_version) |
| |
| self._PrepSpecChanges() |
| self.current_version = self._CreateNewBuildSpec(lkgm_info) |
| if self.current_version: |
| logging.debug('Using build spec: %s', self.current_version) |
| commit_message = 'Automatic: Start %s %s' % (self.build_name, |
| self.current_version) |
| self._SetInFlight() |
| self._PushSpecChanges(commit_message) |
| |
| return self.GetLocalManifest(self.current_version) |
| |
| except (cros_lib.RunCommandError, |
| manifest_version.GitCommandException) as e: |
| err_msg = 'Failed to generate LKGM Candidate. error: %s' % e |
| logging.error(err_msg) |
| last_error = err_msg |
| else: |
| raise manifest_version.GenerateBuildSpecException(last_error) |
| |
| def GetLatestCandidate(self, force_version=None, retries=5): |
| """Gets the version number of the next build spec to build. |
| Args: |
| force_version: Forces us to use this version. |
| retries: Number of retries for updating the status |
| Returns: |
| Local path to manifest to build or None in case of no need to build. |
| Raises: |
| GenerateBuildSpecException in case of failure to generate a buildspec |
| """ |
| def _AttemptToGetLatestCandidate(): |
| """Attempts to acquire latest candidate using manifest repo.""" |
| version_info = self._GetCurrentVersionInfo() |
| self._LoadSpecs(version_info) |
| version_to_use = None |
| if force_version: |
| version_to_use = force_version |
| elif self.latest_unprocessed: |
| version_to_use = self.latest_unprocessed |
| else: |
| logging.info('Found nothing new to build, trying again later.') |
| |
| return version_to_use |
| |
| self.current_version = self._RunLambdaWithTimeout( |
| _AttemptToGetLatestCandidate) |
| if self.current_version: |
| last_error = None |
| for _ in range(0, retries + 1): |
| try: |
| logging.debug('Using build spec: %s', self.current_version) |
| commit_message = 'Automatic: Start %s %s' % (self.build_name, |
| self.current_version) |
| self._PrepSpecChanges() |
| self._SetInFlight() |
| self._PushSpecChanges(commit_message) |
| break |
| except (cros_lib.RunCommandError, |
| manifest_version.GitCommandException) as e: |
| err_msg = 'Failed to set LKGM Candidate inflight. error: %s' % e |
| logging.error(err_msg) |
| last_error = err_msg |
| else: |
| raise manifest_version.GenerateBuildSpecException(last_error) |
| |
| return self.GetLocalManifest(self.current_version) |
| |
| def GetBuildersStatus(self, builders_array): |
| """Returns a build-names->status dictionary of build statuses.""" |
| builder_statuses = {} |
| |
| def _CheckStatusOfBuildersArray(): |
| """Helper function that iterates through current statuses.""" |
| num_complete = 0 |
| _SyncGitRepo(self._TMP_MANIFEST_DIR) |
| version_info = _LKGMCandidateInfo(self.current_version) |
| for builder in builders_array: |
| if builder_statuses.get(builder) not in LKGMManager.STATUS_COMPLETED: |
| logging.debug("Checking for builder %s's status" % builder) |
| builder_statuses[builder] = self.GetBuildStatus( |
| builder, self.current_version, version_info) |
| if builder_statuses[builder] == LKGMManager.STATUS_PASSED: |
| num_complete += 1 |
| logging.info('Builder %s completed with status passed', builder) |
| elif builder_statuses[builder] == LKGMManager.STATUS_FAILED: |
| num_complete += 1 |
| logging.info('Builder %s completed with status failed', builder) |
| elif not builder_statuses[builder]: |
| logging.debug('No status found for builder %s.' % builder) |
| else: |
| num_complete += 1 |
| |
| if num_complete < len(builders_array): |
| logging.info('Waiting for other builds to complete') |
| return None |
| else: |
| return 'Builds completed.' |
| |
| # Check for build completion until all builders report in. |
| builds_succeeded = self._RunLambdaWithTimeout(_CheckStatusOfBuildersArray, |
| use_long_timeout=True) |
| if not builds_succeeded: |
| logging.error('Not all builds finished before MAX_TIMEOUT reached.') |
| |
| return builder_statuses |
| |
| def PromoteCandidate(self, retries=5): |
| """Promotes the current LKGM candidate to be a real versioned LKGM.""" |
| assert self.current_version, 'No current manifest exists.' |
| |
| last_error = None |
| path_to_candidate = self.GetLocalManifest(self.current_version) |
| path_to_lkgm = self.GetAbsolutePathToLKGM() |
| assert os.path.exists(path_to_candidate), 'Candidate not found locally.' |
| |
| # This may potentially fail for not being at TOT while pushing. |
| for index in range(0, retries + 1): |
| try: |
| self._PrepSpecChanges() |
| manifest_version.CreateSymlink(path_to_candidate, path_to_lkgm) |
| cros_lib.RunCommand(['git', 'add', self.LKGM_PATH], |
| cwd=self._TMP_MANIFEST_DIR) |
| self._PushSpecChanges('Automatic: %s promoting %s to LKGM' % ( |
| self.build_name, self.current_version)) |
| return |
| except (manifest_version.GitCommandException, |
| cros_lib.RunCommandError) as e: |
| last_error = 'Failed to promote manifest. error: %s' % e |
| logging.error(last_error) |
| logging.error('Retrying to promote manifest: Retry %d/%d' % |
| (index + 1, retries)) |
| else: |
| raise PromoteCandidateException(last_error) |
| |
| def _PrintLink(self, text, url): |
| """Prints out a link to buildbot.""" |
| print '@@@STEP_LINK@%(text)s@%(url)s@@@' % { 'text': text, |
| 'url': url } |
| |
| def GenerateBlameListSinceLKGM(self): |
| """Prints out links to all CL's that have been committed since LKGM. |
| |
| Add buildbot trappings to print <a href='url'>text</a> in the waterfall for |
| each CL committed since we last had a passing build. |
| """ |
| handler = cros_lib.ManifestHandler.ParseManifest( |
| self.GetAbsolutePathToLKGM()) |
| reviewed_on_re = re.compile('\s*Reviewed-on:\s*(\S+)') |
| author_re = re.compile('\s*Author:.*<(\S+)@\S+>\s*') |
| for project in handler.projects.keys(): |
| rel_src_path = handler.projects[project].get('path') |
| |
| # If it's not part of our source tree, it doesn't affect our build. |
| if not rel_src_path: |
| continue |
| |
| src_path = self.cros_source.GetRelativePath(rel_src_path) |
| revision = handler.projects[project]['revision'] |
| result = cros_lib.RunCommand(['git', 'log', '%s..HEAD' % revision], |
| print_cmd=False, redirect_stdout=True, |
| cwd=src_path) |
| current_author = None |
| for line in result.output.splitlines(): |
| author_match = author_re.match(line) |
| if author_match: |
| current_author = author_match.group(1) |
| |
| review_match = reviewed_on_re.match(line) |
| if review_match: |
| review = review_match.group(1) |
| _, _, change_number = review.rpartition('/') |
| self._PrintLink('%s:%s' % (current_author, change_number), review) |
