bisect_git.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2017 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.
"""Git bisector to bisect a range of git commits.

Example:
  $ ./bisect_git.py init --old rev1 --new rev2 --git_repo /path/to/git/repo
  $ ./bisect_git.py config switch ./switch_git.py
  $ ./bisect_git.py config eval ./eval-manually.sh
  $ ./bisect_git.py run
"""

from __future__ import print_function
import logging

from bisect_kit import bisector_cli
from bisect_kit import cli
from bisect_kit import core
from bisect_kit import errors
from bisect_kit import git_util

logger = logging.getLogger(__name__)


class GitDomain(core.BisectDomain):
  """BisectDomain for git revisions."""
  revtype = staticmethod(cli.argtype_notempty)
  help = globals()['__doc__']

  @staticmethod
  def add_init_arguments(parser):
    parser.add_argument(
        '--git_repo',
        required=True,
        type=cli.argtype_dir_path,
        help='Git repository path')

  @staticmethod
  def init(opts):
    try:
      opts.old = git_util.get_commit_hash(opts.git_repo, opts.old)
    except ValueError as e:
      raise errors.ArgumentError('--old', str(e))
    try:
      opts.new = git_util.get_commit_hash(opts.git_repo, opts.new)
    except ValueError as e:
      raise errors.ArgumentError('--new', str(e))

    config = dict(git_repo=opts.git_repo)
    revlist = git_util.get_revlist(opts.git_repo, opts.old, opts.new)

    details = {}
    metas = git_util.get_batch_commit_metadata(opts.git_repo, revlist)
    for rev in revlist:
      meta = metas[rev]
      if meta is None:
        commit_summary = '(unknown)'
      else:
        commit_summary = meta['message'].splitlines()[0]
      action = {'rev': rev, 'commit_summary': commit_summary}
      details[rev] = {'actions': [action]}

    return config, {'revlist': revlist}

  def __init__(self, config):
    self.config = config

  def setenv(self, env, rev):
    env['GIT_REPO'] = self.config['git_repo']
    env['GIT_REV'] = rev

  def fill_candidate_summary(self, summary):
    # Do nothing.
    pass


if __name__ == '__main__':
  bisector_cli.BisectorCommandLine(GitDomain).main()