Remove roll_deps and trybots_to_run

tools/roll_deps.py

-#!/usr/bin/python2
-
-# Copyright 2014 Google Inc.
-#
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""Skia's Chromium DEPS roll script.
-
-This script:
-- searches through the last N Skia git commits to find out the hash that is
-  associated with the SVN revision number.
-- creates a new branch in the Chromium tree, modifies the DEPS file to
-  point at the given Skia commit, commits, uploads to Rietveld, and
-  deletes the local copy of the branch.
-- creates a whitespace-only commit and uploads that to to Rietveld.
-- returns the Chromium tree to its previous state.
-
-To specify the location of the git executable, set the GIT_EXECUTABLE
-environment variable.
-
-Usage:
-  %prog -c CHROMIUM_PATH -r REVISION [OPTIONAL_OPTIONS]
-"""
-
-
-import optparse
-import os
-import re
-import shutil
-import sys
-import tempfile
-
-import fix_pythonpath # pylint: disable=W0611
-from common.py.utils import git_utils
-from common.py.utils import misc
-from common.py.utils import shell_utils
-
-
-DEFAULT_BOTS_LIST = [
-  'android_clang_dbg',
-  'android_dbg',
-  'android_rel',
-  'cros_daisy',
-  'linux',
-  'linux_asan',
-  'linux_chromeos',
-  'linux_chromeos_asan',
-  'linux_chromium_gn_dbg',
-  'linux_gpu',
-  'linux_layout',
-  'linux_layout_rel',
-  'mac',
-  'mac_asan',
-  'mac_layout',
-  'mac_layout_rel',
-  'win',
-  'win_gpu',
-  'win_layout',
-  'win_layout_rel',
-]
-
-REGEXP_SKIA_REVISION = (
-    r'^  "skia_revision": "(?P<revision>[0-9a-fA-F]{2,40})",$')
-
-
-class DepsRollConfig(object):
-  """Contains configuration options for this module.
-
-  Attributes:
-      chromium_path: (string) path to a local chromium git repository.
-      save_branches: (boolean) iff false, delete temporary branches.
-      verbose: (boolean)  iff false, suppress the output from git-cl.
-      skip_cl_upload: (boolean)
-      cl_bot_list: (list of strings)
-  """
-
-  # pylint: disable=I0011,R0903,R0902
-  def __init__(self, options=None):
-    if not options:
-      options = DepsRollConfig.GetOptionParser()
-    # pylint: disable=I0011,E1103
-    self.verbose = options.verbose
-    self.save_branches = not options.delete_branches
-    self.chromium_path = options.chromium_path
-    self.skip_cl_upload = options.skip_cl_upload
-    # Split and remove empty strigns from the bot list.
-    self.cl_bot_list = [bot for bot in options.bots.split(',') if bot]
-    self.default_branch_name = 'autogenerated_deps_roll_branch'
-    self.reviewers_list = ','.join([
-        # 'rmistry@google.com',
-        # 'reed@google.com',
-        # 'bsalomon@google.com',
-        # 'robertphillips@google.com',
-        ])
-    self.cc_list = ','.join([
-        # 'skia-team@google.com',
-        ])
-
-  @staticmethod
-  def GetOptionParser():
-    # pylint: disable=I0011,C0103
-    """Returns an optparse.OptionParser object.
-
-    Returns:
-        An optparse.OptionParser object.
-
-    Called by the main() function.
-    """
-    option_parser = optparse.OptionParser(usage=__doc__)
-    # Anyone using this script on a regular basis should set the
-    # CHROMIUM_CHECKOUT_PATH environment variable.
-    option_parser.add_option(
-        '-c', '--chromium_path', help='Path to local Chromium Git'
-        ' repository checkout, defaults to CHROMIUM_CHECKOUT_PATH'
-        ' if that environment variable is set.',
-        default=os.environ.get('CHROMIUM_CHECKOUT_PATH'))
-    option_parser.add_option(
-        '-r', '--revision', default=None,
-        help='The Skia Git commit hash.')
-
-    option_parser.add_option(
-        '', '--delete_branches', help='Delete the temporary branches',
-        action='store_true', dest='delete_branches', default=False)
-    option_parser.add_option(
-        '', '--verbose', help='Do not suppress the output from `git cl`.',
-        action='store_true', dest='verbose', default=False)
-    option_parser.add_option(
-        '', '--skip_cl_upload', help='Skip the cl upload step; useful'
-        ' for testing.',
-        action='store_true', default=False)
-
-    default_bots_help = (
-        'Comma-separated list of bots, defaults to a list of %d bots.'
-        '  To skip `git cl try`, set this to an empty string.'
-        % len(DEFAULT_BOTS_LIST))
-    default_bots = ','.join(DEFAULT_BOTS_LIST)
-    option_parser.add_option(
-        '', '--bots', help=default_bots_help, default=default_bots)
-
-    return option_parser
-
-
-class DepsRollError(Exception):
-  """Exceptions specific to this module."""
-  pass
-
-
-def change_skia_deps(revision, depspath):
-  """Update the DEPS file.
-
-  Modify the skia_revision entry in the given DEPS file.
-
-  Args:
-      revision: (string) Skia commit hash.
-      depspath: (string) path to DEPS file.
-  """
-  temp_file = tempfile.NamedTemporaryFile(delete=False,
-                                          prefix='skia_DEPS_ROLL_tmp_')
-  try:
-    deps_regex_rev = re.compile(REGEXP_SKIA_REVISION)
-    deps_regex_rev_repl = '  "skia_revision": "%s",' % revision
-
-    with open(depspath, 'r') as input_stream:
-      for line in input_stream:
-        line = deps_regex_rev.sub(deps_regex_rev_repl, line)
-        temp_file.write(line)
-  finally:
-    temp_file.close()
-  shutil.move(temp_file.name, depspath)
-
-
-def submit_tries(bots_to_run, dry_run=False):
-  """Submit try requests for the current branch on the given bots.
-
-  Args:
-      bots_to_run: (list of strings) bots to request.
-      dry_run: (bool) whether to actually submit the try request.
-  """
-  git_try = [
-      git_utils.GIT, 'cl', 'try', '-m', 'tryserver.chromium']
-  git_try.extend([arg for bot in bots_to_run for arg in ('-b', bot)])
-
-  if dry_run:
-    space = '   '
-    print 'You should call:'
-    print space, git_try
-    print
-  else:
-    shell_utils.run(git_try)
-
-
-def roll_deps(config, revision):
-  """Upload changed DEPS and a whitespace change.
-
-  Given the correct git_hash, create two Reitveld issues.
-
-  Args:
-      config: (roll_deps.DepsRollConfig) object containing options.
-      revision: (string) Skia Git hash.
-
-  Returns:
-      a tuple containing textual description of the two issues.
-
-  Raises:
-      OSError: failed to execute git or git-cl.
-      subprocess.CalledProcessError: git returned unexpected status.
-  """
-  with misc.ChDir(config.chromium_path, verbose=config.verbose):
-    git_utils.Fetch()
-    output = shell_utils.run([git_utils.GIT, 'show', 'origin/master:DEPS'],
-                             log_in_real_time=False).rstrip()
-    match = re.search(REGEXP_SKIA_REVISION, output, flags=re.MULTILINE)
-    old_revision = None
-    if match:
-      old_revision = match.group('revision')
-    assert old_revision
-
-    master_hash = git_utils.FullHash('origin/master').rstrip()
-
-    # master_hash[8] gives each whitespace CL a unique name.
-    branch = 'control_%s' % master_hash[:8]
-    message = ('whitespace change %s\n\n'
-               'Chromium base revision: %s\n\n'
-               'This CL was created by Skia\'s roll_deps.py script.\n'
-               ) % (master_hash[:8], master_hash[:8])
-    with git_utils.GitBranch(branch, message,
-                             delete_when_finished=not config.save_branches,
-                             upload=not config.skip_cl_upload
-                             ) as whitespace_branch:
-      branch = git_utils.GetCurrentBranch()
-      with open(os.path.join('build', 'whitespace_file.txt'), 'a') as f:
-        f.write('\nCONTROL\n')
-
-      control_url = whitespace_branch.commit_and_upload()
-      if config.cl_bot_list:
-        submit_tries(config.cl_bot_list, dry_run=config.skip_cl_upload)
-      whitespace_cl = control_url
-      if config.save_branches:
-        whitespace_cl += '\n    branch: %s' % branch
-
-    branch = 'roll_%s_%s' % (revision, master_hash[:8])
-    message = (
-        'roll skia DEPS to %s\n\n'
-        'Chromium base revision: %s\n'
-        'Old Skia revision: %s\n'
-        'New Skia revision: %s\n'
-        'Control CL: %s\n\n'
-        'This CL was created by Skia\'s roll_deps.py script.\n\n'
-        'Bypassing commit queue trybots:\n'
-        'NOTRY=true\n'
-        % (revision, master_hash[:8],
-           old_revision[:8], revision[:8], control_url))
-    with git_utils.GitBranch(branch, message,
-                             delete_when_finished=not config.save_branches,
-                             upload=not config.skip_cl_upload
-                             ) as roll_branch:
-      change_skia_deps(revision, 'DEPS')
-      deps_url = roll_branch.commit_and_upload()
-      if config.cl_bot_list:
-        submit_tries(config.cl_bot_list, dry_run=config.skip_cl_upload)
-      deps_cl = deps_url
-      if config.save_branches:
-        deps_cl += '\n    branch: %s' % branch
-
-    return deps_cl, whitespace_cl
-
-
-def main(args):
-  """main function; see module-level docstring and GetOptionParser help.
-
-  Args:
-      args: sys.argv[1:]-type argument list.
-  """
-  option_parser = DepsRollConfig.GetOptionParser()
-  options = option_parser.parse_args(args)[0]
-
-  if not options.revision:
-    option_parser.error('Must specify a revision.')
-  if not options.chromium_path:
-    option_parser.error('Must specify chromium_path.')
-  if not os.path.isdir(options.chromium_path):
-    option_parser.error('chromium_path must be a directory.')
-
-  config = DepsRollConfig(options)
-  shell_utils.VERBOSE = options.verbose
-  deps_issue, whitespace_issue = roll_deps(config, options.revision)
-
-  if deps_issue and whitespace_issue:
-    print 'DEPS roll:\n    %s\n' % deps_issue
-    print 'Whitespace change:\n    %s\n' % whitespace_issue
-  else:
-    print >> sys.stderr, 'No issues created.'
-
-
-if __name__ == '__main__':
-  main(sys.argv[1:])