| # Copyright 2013 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import itertools |
| import re |
| |
| from recipe_engine import recipe_api |
| |
| class GitApi(recipe_api.RecipeApi): |
| _GIT_HASH_RE = re.compile('[0-9a-f]{40}', re.IGNORECASE) |
| |
| def __call__(self, *args, **kwargs): |
| """Return a git command step.""" |
| name = kwargs.pop('name', 'git ' + args[0]) |
| |
| infra_step = kwargs.pop('infra_step', True) |
| git_cmd = ['git'] |
| |
| options = kwargs.pop('git_config_options', {}) |
| for k, v in sorted(options.items()): |
| git_cmd.extend(['-c', '%s=%s' % (k, v)]) |
| can_fail_build = kwargs.pop('can_fail_build', True) |
| try: |
| with self.m.context(cwd=(self.m.context.cwd or self.m.path['checkout'])): |
| return self.m.step(name, git_cmd + list(args), infra_step=infra_step, |
| **kwargs) |
| except self.m.step.StepFailure as f: |
| if can_fail_build: |
| raise |
| else: |
| return f.result |
| |
| def fetch_tags(self, remote_name=None, **kwargs): |
| """Fetches all tags from the remote.""" |
| kwargs.setdefault('name', 'git fetch tags') |
| remote_name = remote_name or 'origin' |
| return self('fetch', remote_name, '--tags', **kwargs) |
| |
| def cat_file_at_commit(self, file_path, commit_hash, remote_name=None, |
| **kwargs): |
| """Outputs the contents of a file at a given revision.""" |
| self.fetch_tags(remote_name=remote_name, **kwargs) |
| kwargs.setdefault('name', 'git cat-file %s:%s' % (commit_hash, file_path)) |
| return self('cat-file', 'blob', '%s:%s' % (commit_hash, file_path), |
| **kwargs) |
| |
| def count_objects(self, previous_result=None, can_fail_build=False, **kwargs): |
| """Returns `git count-objects` result as a dict. |
| |
| Args: |
| previous_result (dict): the result of previous count_objects call. |
| If passed, delta is reported in the log and step text. |
| can_fail_build (bool): if True, may fail the build and/or raise an |
| exception. Defaults to False. |
| |
| Returns: |
| A dict of count-object values, or None if count-object run failed. |
| """ |
| if previous_result: |
| assert isinstance(previous_result, dict) |
| assert all(isinstance(v, long) for v in previous_result.values()) |
| assert 'size' in previous_result |
| assert 'size-pack' in previous_result |
| |
| step_result = None |
| try: |
| step_result = self( |
| 'count-objects', '-v', stdout=self.m.raw_io.output(), |
| can_fail_build=can_fail_build, **kwargs) |
| |
| if not step_result.stdout: |
| return None |
| |
| result = {} |
| for line in step_result.stdout.splitlines(): |
| name, value = line.split(':', 1) |
| result[name] = long(value.strip()) |
| |
| def results_to_text(results): |
| return [' %s: %s' % (k, v) for k, v in results.items()] |
| |
| step_result.presentation.logs['result'] = results_to_text(result) |
| |
| if previous_result: |
| delta = { |
| key: value - previous_result[key] |
| for key, value in result.items() |
| if key in previous_result} |
| step_result.presentation.logs['delta'] = ( |
| ['before:'] + results_to_text(previous_result) + |
| ['', 'after:'] + results_to_text(result) + |
| ['', 'delta:'] + results_to_text(delta) |
| ) |
| |
| size_delta = ( |
| result['size'] + result['size-pack'] |
| - previous_result['size'] - previous_result['size-pack']) |
| # size_delta is in KiB. |
| step_result.presentation.step_text = ( |
| 'size delta: %+.2f MiB' % (size_delta / 1024.0)) |
| |
| return result |
| except Exception as ex: |
| if step_result: |
| step_result.presentation.logs['exception'] = ['%r' % ex] |
| step_result.presentation.status = self.m.step.WARNING |
| if can_fail_build: |
| raise recipe_api.InfraFailure('count-objects failed: %s' % ex) |
| return None |
| |
| def checkout(self, url, ref=None, dir_path=None, recursive=False, |
| submodules=True, submodule_update_force=False, |
| keep_paths=None, step_suffix=None, |
| curl_trace_file=None, can_fail_build=True, |
| set_got_revision=False, remote_name=None, |
| display_fetch_size=None, file_name=None, |
| submodule_update_recursive=True, |
| use_git_cache=False, progress=True, tags=False): |
| """Performs a full git checkout and returns sha1 of checked out revision. |
| |
| Args: |
| url (str): url of remote repo to use as upstream |
| ref (str): ref to fetch and check out |
| dir_path (Path): optional directory to clone into |
| recursive (bool): whether to recursively fetch submodules or not |
| submodules (bool): whether to sync and update submodules or not |
| submodule_update_force (bool): whether to update submodules with --force |
| keep_paths (iterable of strings): paths to ignore during git-clean; |
| paths are gitignore-style patterns relative to checkout_path. |
| step_suffix (str): suffix to add to a each step name |
| curl_trace_file (Path): if not None, dump GIT_CURL_VERBOSE=1 trace to that |
| file. Useful for debugging git issue reproducible only on bots. It has |
| a side effect of all stderr output of 'git fetch' going to that file. |
| can_fail_build (bool): if False, ignore errors during fetch or checkout. |
| set_got_revision (bool): if True, resolves HEAD and sets got_revision |
| property. |
| remote_name (str): name of the git remote to use |
| display_fetch_size (bool): if True, run `git count-objects` before and |
| after fetch and display delta. Adds two more steps. Defaults to False. |
| file_name (str): optional path to a single file to checkout. |
| submodule_update_recursive (bool): if True, updates submodules |
| recursively. |
| use_git_cache (bool): if True, git cache will be used for this checkout. |
| WARNING, this is EXPERIMENTAL!!! This wasn't tested with: |
| * submodules |
| * since origin url is modified |
| to a local path, may cause problem with scripts that do |
| "git fetch origin" or "git push origin". |
| * arbitrary refs such refs/whatever/not-fetched-by-default-to-cache |
| progress (bool): whether to show progress for fetch or not |
| tags (bool): Also fetch tags. |
| |
| Returns: If the checkout was successful, this returns the commit hash of |
| the checked-out-repo. Otherwise this returns None. |
| """ |
| retVal = None |
| |
| # TODO(robertocn): Break this function and refactor calls to it. |
| # The problem is that there are way too many unrealated use cases for |
| # it, and the function's signature is getting unwieldy and its body |
| # unreadable. |
| display_fetch_size = display_fetch_size or False |
| if not dir_path: |
| dir_path = url.rsplit('/', 1)[-1] |
| if dir_path.endswith('.git'): # ex: https://host/foobar.git |
| dir_path = dir_path[:-len('.git')] |
| |
| # ex: ssh://host:repo/foobar/.git |
| dir_path = dir_path or dir_path.rsplit('/', 1)[-1] |
| |
| dir_path = self.m.path['start_dir'].join(dir_path) |
| |
| if 'checkout' not in self.m.path: |
| self.m.path['checkout'] = dir_path |
| |
| git_setup_args = ['--path', dir_path, '--url', url] |
| |
| if remote_name: |
| git_setup_args += ['--remote', remote_name] |
| else: |
| remote_name = 'origin' |
| |
| step_suffix = '' if step_suffix is None else ' (%s)' % step_suffix |
| self.m.python( |
| 'git setup%s' % step_suffix, |
| self.resource('git_setup.py'), |
| git_setup_args) |
| |
| # Some of the commands below require depot_tools to be in PATH. |
| path = self.m.path.pathsep.join([ |
| str(self.repo_resource()), '%(PATH)s']) |
| |
| with self.m.context(cwd=dir_path): |
| if use_git_cache: |
| with self.m.context(env={'PATH': path}): |
| self('cache', 'populate', '-c', |
| self.m.path['cache'].join('git'), url, |
| name='populate cache', |
| can_fail_build=can_fail_build) |
| dir_cmd = self( |
| 'cache', 'exists', '--quiet', |
| '--cache-dir', self.m.path['cache'].join('git'), url, |
| can_fail_build=can_fail_build, |
| stdout=self.m.raw_io.output(), |
| step_test_data=lambda: |
| self.m.raw_io.test_api.stream_output('mirror_dir')) |
| mirror_dir = dir_cmd.stdout.strip() |
| self('remote', 'set-url', 'origin', mirror_dir, |
| can_fail_build=can_fail_build) |
| |
| # There are five kinds of refs we can be handed: |
| # 0) None. In this case, we default to api.buildbucket.gitiles_commit.ref. |
| # 1) A fully qualified branch name, e.g. 'refs/heads/master'. |
| # Chop off 'refs/heads/' and now it matches case (4). |
| # 2) A 40-character SHA1 hash. |
| # 3) A fully-qualifed arbitrary ref, e.g. 'refs/foo/bar/baz'. |
| # 4) A branch name, e.g. 'master'. |
| # Note that 'FETCH_HEAD' can be many things (and therefore not a valid |
| # checkout target) if many refs are fetched, but we only explicitly fetch |
| # one ref here, so this is safe. |
| if not ref: # Case 0. |
| ref = self.m.buildbucket.gitiles_commit.ref or 'master' |
| |
| # If it's a fully-qualified branch name, trim the 'refs/heads/' prefix. |
| if ref.startswith('refs/heads/'): # Case 1. |
| ref = ref[len('refs/heads/'):] |
| |
| fetch_args = [] |
| if self._GIT_HASH_RE.match(ref): # Case 2. |
| fetch_remote = remote_name |
| fetch_ref = '' |
| checkout_ref = ref |
| else: # Cases 3 and 4. |
| fetch_remote = remote_name |
| fetch_ref = ref |
| checkout_ref = 'FETCH_HEAD' |
| |
| fetch_args = [x for x in (fetch_remote, fetch_ref) if x] |
| if recursive: |
| fetch_args.append('--recurse-submodules') |
| |
| if progress: |
| fetch_args.append('--progress') |
| |
| fetch_env = {'PATH': path} |
| fetch_stderr = None |
| if curl_trace_file: |
| fetch_env['GIT_CURL_VERBOSE'] = '1' |
| fetch_stderr = self.m.raw_io.output(leak_to=curl_trace_file) |
| |
| if tags: |
| fetch_args.append('--tags') |
| |
| fetch_step_name = 'git fetch%s' % step_suffix |
| if display_fetch_size: |
| count_objects_before_fetch = self.count_objects( |
| name='count-objects before %s' % fetch_step_name, |
| step_test_data=lambda: self.m.raw_io.test_api.stream_output( |
| self.test_api.count_objects_output(1000))) |
| with self.m.context(env=fetch_env): |
| self('fetch', *fetch_args, |
| name=fetch_step_name, |
| stderr=fetch_stderr, |
| can_fail_build=can_fail_build) |
| if display_fetch_size: |
| self.count_objects( |
| name='count-objects after %s' % fetch_step_name, |
| previous_result=count_objects_before_fetch, |
| step_test_data=lambda: self.m.raw_io.test_api.stream_output( |
| self.test_api.count_objects_output(2000))) |
| |
| if file_name: |
| self('checkout', '-f', checkout_ref, '--', file_name, |
| name='git checkout%s' % step_suffix, |
| can_fail_build=can_fail_build) |
| |
| else: |
| self('checkout', '-f', checkout_ref, |
| name='git checkout%s' % step_suffix, |
| can_fail_build=can_fail_build) |
| |
| rev_parse_step = self('rev-parse', 'HEAD', |
| name='read revision', |
| stdout=self.m.raw_io.output(), |
| can_fail_build=False, |
| step_test_data=lambda: |
| self.m.raw_io.test_api.stream_output('deadbeef')) |
| |
| if rev_parse_step.presentation.status == 'SUCCESS': |
| sha = rev_parse_step.stdout.strip() |
| retVal = sha |
| rev_parse_step.presentation.step_text = "<br/>checked out %r<br/>" % sha |
| if set_got_revision: |
| rev_parse_step.presentation.properties['got_revision'] = sha |
| |
| clean_args = list(itertools.chain( |
| *[('-e', path) for path in keep_paths or []])) |
| |
| self('clean', '-f', '-d', '-x', *clean_args, |
| name='git clean%s' % step_suffix, |
| can_fail_build=can_fail_build) |
| |
| if submodules: |
| self('submodule', 'sync', |
| name='submodule sync%s' % step_suffix, |
| can_fail_build=can_fail_build) |
| submodule_update = ['submodule', 'update', '--init'] |
| if submodule_update_recursive: |
| submodule_update.append('--recursive') |
| if submodule_update_force: |
| submodule_update.append('--force') |
| self(*submodule_update, |
| name='submodule update%s' % step_suffix, |
| can_fail_build=can_fail_build) |
| |
| return retVal |
| |
| def get_timestamp(self, commit='HEAD', test_data=None, **kwargs): |
| """Find and return the timestamp of the given commit.""" |
| step_test_data = None |
| if test_data is not None: |
| step_test_data = lambda: self.m.raw_io.test_api.stream_output(test_data) |
| return self('show', commit, '--format=%at', '-s', |
| stdout=self.m.raw_io.output(), |
| step_test_data=step_test_data).stdout.rstrip() |
| |
| def rebase(self, name_prefix, branch, dir_path, remote_name=None, |
| **kwargs): |
| """Run rebase HEAD onto branch |
| Args: |
| name_prefix (str): a prefix used for the step names |
| branch (str): a branch name or a hash to rebase onto |
| dir_path (Path): directory to clone into |
| remote_name (str): the remote name to rebase from if not origin |
| """ |
| remote_name = remote_name or 'origin' |
| with self.m.context(cwd=dir_path): |
| try: |
| self('rebase', '%s/master' % remote_name, |
| name="%s rebase" % name_prefix, **kwargs) |
| except self.m.step.StepFailure: |
| self('rebase', '--abort', name='%s rebase abort' % name_prefix, |
| **kwargs) |
| raise |
| |
| def config_get(self, prop_name, **kwargs): |
| """Returns: (str) The Git config output, or None if no output was generated. |
| |
| Args: |
| prop_name: (str) The name of the config property to query. |
| kwargs: Forwarded to '__call__'. |
| """ |
| kwargs['name'] = kwargs.get('name', 'git config %s' % (prop_name,)) |
| result = self('config', '--get', prop_name, stdout=self.m.raw_io.output(), |
| **kwargs) |
| |
| value = result.stdout |
| if value: |
| value = value.strip() |
| result.presentation.step_text = value |
| return value |
| |
| def get_remote_url(self, remote_name=None, **kwargs): |
| """Returns: (str) The URL of the remote Git repository, or None. |
| |
| Args: |
| remote_name: (str) The name of the remote to query, defaults to 'origin'. |
| kwargs: Forwarded to '__call__'. |
| """ |
| remote_name = remote_name or 'origin' |
| return self.config_get('remote.%s.url' % (remote_name,), **kwargs) |
| |
| def bundle_create(self, bundle_path, rev_list_args=None, **kwargs): |
| """Run 'git bundle create' on a Git repository. |
| |
| Args: |
| bundle_path (Path): The path of the output bundle. |
| refs (list): The list of refs to include in the bundle. If None, all |
| refs in the Git checkout will be bundled. |
| kwargs: Forwarded to '__call__'. |
| """ |
| if not rev_list_args: |
| rev_list_args = ['--all'] |
| self('bundle', 'create', bundle_path, *rev_list_args, **kwargs) |
| |
| def new_branch(self, branch, name=None, upstream=None, **kwargs): |
| """Runs git new-branch on a Git repository, to be used before git cl upload. |
| |
| Args: |
| branch (str): new branch name, which must not yet exist. |
| name (str): step name. |
| upstream (str): to origin/master. |
| kwargs: Forwarded to '__call__'. |
| """ |
| env = self.m.context.env |
| env['PATH'] = self.m.path.pathsep.join([ |
| str(self.repo_resource()), '%(PATH)s']) |
| args = ['new-branch', branch] |
| if upstream: |
| args.extend(['--upstream', upstream]) |
| if not name: |
| name = 'git new-branch %s' % branch |
| with self.m.context(env=env): |
| return self(*args, name=name, **kwargs) |
