447 lines
16 KiB
Python
447 lines
16 KiB
Python
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#!/usr/bin/env python
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# Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
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#
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# Use of this source code is governed by a BSD-style license
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# that can be found in the LICENSE file in the root of the source
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# tree. An additional intellectual property rights grant can be found
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# in the file PATENTS. All contributing project authors may
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# be found in the AUTHORS file in the root of the source tree.
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"""Script to roll chromium_revision in the WebRTC DEPS file."""
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import argparse
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import base64
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import collections
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import logging
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import os
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import re
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import subprocess
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import sys
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import urllib
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CHROMIUM_SRC_URL = 'https://chromium.googlesource.com/chromium/src'
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CHROMIUM_COMMIT_TEMPLATE = CHROMIUM_SRC_URL + '/+/%s'
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CHROMIUM_LOG_TEMPLATE = CHROMIUM_SRC_URL + '/+log/%s'
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CHROMIUM_FILE_TEMPLATE = CHROMIUM_SRC_URL + '/+/%s/%s'
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COMMIT_POSITION_RE = re.compile('^Cr-Commit-Position: .*#([0-9]+).*$')
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CLANG_REVISION_RE = re.compile(r'^CLANG_REVISION = \'(\d+)\'$')
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ROLL_BRANCH_NAME = 'roll_chromium_revision'
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SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
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CHECKOUT_ROOT_DIR = os.path.realpath(os.path.join(SCRIPT_DIR, os.pardir,
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os.pardir))
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sys.path.append(CHECKOUT_ROOT_DIR)
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import setup_links
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sys.path.append(os.path.join(CHECKOUT_ROOT_DIR, 'build'))
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import find_depot_tools
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find_depot_tools.add_depot_tools_to_path()
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from gclient import GClientKeywords
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CLANG_UPDATE_SCRIPT_URL_PATH = 'tools/clang/scripts/update.py'
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CLANG_UPDATE_SCRIPT_LOCAL_PATH = os.path.join('tools', 'clang', 'scripts',
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'update.py')
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DepsEntry = collections.namedtuple('DepsEntry', 'path url revision')
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ChangedDep = collections.namedtuple('ChangedDep',
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'path url current_rev new_rev')
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class RollError(Exception):
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pass
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def ParseDepsDict(deps_content):
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local_scope = {}
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var = GClientKeywords.VarImpl({}, local_scope)
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global_scope = {
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'File': GClientKeywords.FileImpl,
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'From': GClientKeywords.FromImpl,
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'Var': var.Lookup,
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'deps_os': {},
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}
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exec(deps_content, global_scope, local_scope)
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return local_scope
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def ParseLocalDepsFile(filename):
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with open(filename, 'rb') as f:
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deps_content = f.read()
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return ParseDepsDict(deps_content)
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def ParseRemoteCrDepsFile(revision):
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deps_content = ReadRemoteCrFile('DEPS', revision)
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return ParseDepsDict(deps_content)
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def ParseCommitPosition(commit_message):
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for line in reversed(commit_message.splitlines()):
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m = COMMIT_POSITION_RE.match(line.strip())
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if m:
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return m.group(1)
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logging.error('Failed to parse commit position id from:\n%s\n',
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commit_message)
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sys.exit(-1)
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def _RunCommand(command, working_dir=None, ignore_exit_code=False,
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extra_env=None):
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"""Runs a command and returns the output from that command.
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If the command fails (exit code != 0), the function will exit the process.
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Returns:
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A tuple containing the stdout and stderr outputs as strings.
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"""
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working_dir = working_dir or CHECKOUT_ROOT_DIR
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logging.debug('CMD: %s CWD: %s', ' '.join(command), working_dir)
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env = os.environ.copy()
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if extra_env:
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assert all(type(value) == str for value in extra_env.values())
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logging.debug('extra env: %s', extra_env)
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env.update(extra_env)
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p = subprocess.Popen(command, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE, env=env,
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cwd=working_dir, universal_newlines=True)
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std_output = p.stdout.read()
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err_output = p.stderr.read()
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p.wait()
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p.stdout.close()
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p.stderr.close()
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if not ignore_exit_code and p.returncode != 0:
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logging.error('Command failed: %s\n'
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'stdout:\n%s\n'
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'stderr:\n%s\n', ' '.join(command), std_output, err_output)
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sys.exit(p.returncode)
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return std_output, err_output
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def _GetBranches():
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"""Returns a tuple of active,branches.
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The 'active' is the name of the currently active branch and 'branches' is a
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list of all branches.
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"""
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lines = _RunCommand(['git', 'branch'])[0].split('\n')
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branches = []
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active = ''
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for line in lines:
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if '*' in line:
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# The assumption is that the first char will always be the '*'.
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active = line[1:].strip()
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branches.append(active)
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else:
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branch = line.strip()
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if branch:
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branches.append(branch)
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return active, branches
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def _ReadGitilesContent(url):
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# Download and decode BASE64 content until
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# https://code.google.com/p/gitiles/issues/detail?id=7 is fixed.
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base64_content = ReadUrlContent(url + '?format=TEXT')
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return base64.b64decode(base64_content[0])
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def ReadRemoteCrFile(path_below_src, revision):
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"""Reads a remote Chromium file of a specific revision. Returns a string."""
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return _ReadGitilesContent(CHROMIUM_FILE_TEMPLATE % (revision,
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path_below_src))
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def ReadRemoteCrCommit(revision):
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"""Reads a remote Chromium commit message. Returns a string."""
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return _ReadGitilesContent(CHROMIUM_COMMIT_TEMPLATE % revision)
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def ReadUrlContent(url):
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"""Connect to a remote host and read the contents. Returns a list of lines."""
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conn = urllib.urlopen(url)
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try:
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return conn.readlines()
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except IOError as e:
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logging.exception('Error connecting to %s. Error: %s', url, e)
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raise
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finally:
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conn.close()
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def GetMatchingDepsEntries(depsentry_dict, dir_path):
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"""Gets all deps entries matching the provided path.
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This list may contain more than one DepsEntry object.
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Example: dir_path='src/testing' would give results containing both
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'src/testing/gtest' and 'src/testing/gmock' deps entries for Chromium's DEPS.
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Example 2: dir_path='src/build' should return 'src/build' but not
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'src/buildtools'.
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Returns:
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A list of DepsEntry objects.
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"""
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result = []
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for path, depsentry in depsentry_dict.iteritems():
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if path == dir_path:
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result.append(depsentry)
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else:
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parts = path.split('/')
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if all(part == parts[i]
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for i, part in enumerate(dir_path.split('/'))):
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result.append(depsentry)
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return result
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def BuildDepsentryDict(deps_dict):
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"""Builds a dict of DepsEntry object from a raw parsed deps dict."""
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result = {}
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def AddDepsEntries(deps_subdict):
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for path, deps_url in deps_subdict.iteritems():
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if not result.has_key(path):
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url, revision = deps_url.split('@') if deps_url else (None, None)
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result[path] = DepsEntry(path, url, revision)
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AddDepsEntries(deps_dict['deps'])
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for deps_os in ['win', 'mac', 'unix', 'android', 'ios', 'unix']:
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AddDepsEntries(deps_dict['deps_os'].get(deps_os, {}))
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return result
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def CalculateChangedDeps(current_deps, new_deps):
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result = []
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current_entries = BuildDepsentryDict(current_deps)
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new_entries = BuildDepsentryDict(new_deps)
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all_deps_dirs = setup_links.DIRECTORIES
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for deps_dir in all_deps_dirs:
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# All deps have 'src' prepended to the path in the Chromium DEPS file.
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dir_path = 'src/%s' % deps_dir
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for entry in GetMatchingDepsEntries(current_entries, dir_path):
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new_matching_entries = GetMatchingDepsEntries(new_entries, entry.path)
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assert len(new_matching_entries) <= 1, (
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'Should never find more than one entry matching %s in %s, found %d' %
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(entry.path, new_entries, len(new_matching_entries)))
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if not new_matching_entries:
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result.append(ChangedDep(entry.path, entry.url, entry.revision, 'None'))
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elif entry != new_matching_entries[0]:
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result.append(ChangedDep(entry.path, entry.url, entry.revision,
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new_matching_entries[0].revision))
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return result
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def CalculateChangedClang(new_cr_rev):
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def GetClangRev(lines):
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for line in lines:
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match = CLANG_REVISION_RE.match(line)
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if match:
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return match.group(1)
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raise RollError('Could not parse Clang revision!')
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chromium_src_path = os.path.join(CHECKOUT_ROOT_DIR, 'chromium', 'src',
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CLANG_UPDATE_SCRIPT_LOCAL_PATH)
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with open(chromium_src_path, 'rb') as f:
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current_lines = f.readlines()
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current_rev = GetClangRev(current_lines)
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new_clang_update_py = ReadRemoteCrFile(CLANG_UPDATE_SCRIPT_URL_PATH,
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new_cr_rev).splitlines()
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new_rev = GetClangRev(new_clang_update_py)
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return ChangedDep(CLANG_UPDATE_SCRIPT_LOCAL_PATH, None, current_rev, new_rev)
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def GenerateCommitMessage(current_cr_rev, new_cr_rev, current_commit_pos,
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new_commit_pos, changed_deps_list, clang_change):
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current_cr_rev = current_cr_rev[0:10]
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new_cr_rev = new_cr_rev[0:10]
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rev_interval = '%s..%s' % (current_cr_rev, new_cr_rev)
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git_number_interval = '%s:%s' % (current_commit_pos, new_commit_pos)
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commit_msg = ['Roll chromium_revision %s (%s)\n' % (rev_interval,
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git_number_interval)]
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commit_msg.append('Change log: %s' % (CHROMIUM_LOG_TEMPLATE % rev_interval))
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commit_msg.append('Full diff: %s\n' % (CHROMIUM_COMMIT_TEMPLATE %
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rev_interval))
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# TBR field will be empty unless in some custom cases, where some engineers
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# are added.
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tbr_authors = ''
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if changed_deps_list:
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commit_msg.append('Changed dependencies:')
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for c in changed_deps_list:
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commit_msg.append('* %s: %s/+log/%s..%s' % (c.path, c.url,
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c.current_rev[0:10],
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c.new_rev[0:10]))
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if 'libvpx' in c.path:
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tbr_authors += 'marpan@webrtc.org, stefan@webrtc.org, '
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change_url = CHROMIUM_FILE_TEMPLATE % (rev_interval, 'DEPS')
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commit_msg.append('DEPS diff: %s\n' % change_url)
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else:
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commit_msg.append('No dependencies changed.')
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if clang_change.current_rev != clang_change.new_rev:
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commit_msg.append('Clang version changed %s:%s' %
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(clang_change.current_rev, clang_change.new_rev))
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change_url = CHROMIUM_FILE_TEMPLATE % (rev_interval,
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CLANG_UPDATE_SCRIPT_URL_PATH)
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commit_msg.append('Details: %s\n' % change_url)
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tbr_authors += 'pbos@webrtc.org'
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else:
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commit_msg.append('No update to Clang.\n')
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commit_msg.append('TBR=%s' % tbr_authors)
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return '\n'.join(commit_msg)
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def UpdateDeps(deps_filename, old_cr_revision, new_cr_revision):
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"""Update the DEPS file with the new revision."""
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with open(deps_filename, 'rb') as deps_file:
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deps_content = deps_file.read()
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deps_content = deps_content.replace(old_cr_revision, new_cr_revision)
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with open(deps_filename, 'wb') as deps_file:
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deps_file.write(deps_content)
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def _IsTreeClean():
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stdout, _ = _RunCommand(['git', 'status', '--porcelain'])
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if len(stdout) == 0:
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return True
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logging.error('Dirty/unversioned files:\n%s', stdout)
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return False
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def _EnsureUpdatedMasterBranch(dry_run):
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current_branch = _RunCommand(
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['git', 'rev-parse', '--abbrev-ref', 'HEAD'])[0].splitlines()[0]
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if current_branch != 'master':
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logging.error('Please checkout the master branch and re-run this script.')
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if not dry_run:
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sys.exit(-1)
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logging.info('Updating master branch...')
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_RunCommand(['git', 'pull'])
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def _CreateRollBranch(dry_run):
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logging.info('Creating roll branch: %s', ROLL_BRANCH_NAME)
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if not dry_run:
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_RunCommand(['git', 'checkout', '-b', ROLL_BRANCH_NAME])
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def _RemovePreviousRollBranch(dry_run):
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active_branch, branches = _GetBranches()
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if active_branch == ROLL_BRANCH_NAME:
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active_branch = 'master'
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if ROLL_BRANCH_NAME in branches:
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logging.info('Removing previous roll branch (%s)', ROLL_BRANCH_NAME)
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if not dry_run:
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_RunCommand(['git', 'checkout', active_branch])
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_RunCommand(['git', 'branch', '-D', ROLL_BRANCH_NAME])
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def _LocalCommit(commit_msg, dry_run):
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logging.info('Committing changes locally.')
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if not dry_run:
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_RunCommand(['git', 'add', '--update', '.'])
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|
|
_RunCommand(['git', 'commit', '-m', commit_msg])
|
||
|
|
|
||
|
|
|
||
|
|
def _UploadCL(dry_run, rietveld_email=None):
|
||
|
|
logging.info('Uploading CL...')
|
||
|
|
if not dry_run:
|
||
|
|
cmd = ['git', 'cl', 'upload', '-f']
|
||
|
|
if rietveld_email:
|
||
|
|
cmd.append('--email=%s' % rietveld_email)
|
||
|
|
_RunCommand(cmd, extra_env={'EDITOR': 'true'})
|
||
|
|
|
||
|
|
|
||
|
|
def _SendToCQ(dry_run, skip_cq):
|
||
|
|
logging.info('Sending the CL to the CQ...')
|
||
|
|
if not dry_run and not skip_cq:
|
||
|
|
_RunCommand(['git', 'cl', 'set_commit'])
|
||
|
|
logging.info('Sent the CL to the CQ.')
|
||
|
|
|
||
|
|
|
||
|
|
def main():
|
||
|
|
p = argparse.ArgumentParser()
|
||
|
|
p.add_argument('--clean', action='store_true', default=False,
|
||
|
|
help='Removes any previous local roll branch.')
|
||
|
|
p.add_argument('-r', '--revision',
|
||
|
|
help=('Chromium Git revision to roll to. Defaults to the '
|
||
|
|
'Chromium HEAD revision if omitted.'))
|
||
|
|
p.add_argument('-u', '--rietveld-email',
|
||
|
|
help=('E-mail address to use for creating the CL at Rietveld'
|
||
|
|
'If omitted a previously cached one will be used or an '
|
||
|
|
'error will be thrown during upload.'))
|
||
|
|
p.add_argument('--dry-run', action='store_true', default=False,
|
||
|
|
help=('Calculate changes and modify DEPS, but don\'t create '
|
||
|
|
'any local branch, commit, upload CL or send any '
|
||
|
|
'tryjobs.'))
|
||
|
|
p.add_argument('--allow-reverse', action='store_true', default=False,
|
||
|
|
help=('Allow rolling back in time (disabled by default but '
|
||
|
|
'may be useful to be able do to manually).'))
|
||
|
|
p.add_argument('--skip-cq', action='store_true', default=False,
|
||
|
|
help='Skip sending the CL to the CQ (default: %(default)s)')
|
||
|
|
p.add_argument('-v', '--verbose', action='store_true', default=False,
|
||
|
|
help='Be extra verbose in printing of log messages.')
|
||
|
|
opts = p.parse_args()
|
||
|
|
|
||
|
|
if opts.verbose:
|
||
|
|
logging.basicConfig(level=logging.DEBUG)
|
||
|
|
else:
|
||
|
|
logging.basicConfig(level=logging.INFO)
|
||
|
|
|
||
|
|
if not _IsTreeClean():
|
||
|
|
logging.error('Please clean your local checkout first.')
|
||
|
|
return 1
|
||
|
|
|
||
|
|
if opts.clean:
|
||
|
|
_RemovePreviousRollBranch(opts.dry_run)
|
||
|
|
|
||
|
|
_EnsureUpdatedMasterBranch(opts.dry_run)
|
||
|
|
|
||
|
|
new_cr_rev = opts.revision
|
||
|
|
if not new_cr_rev:
|
||
|
|
stdout, _ = _RunCommand(['git', 'ls-remote', CHROMIUM_SRC_URL, 'HEAD'])
|
||
|
|
head_rev = stdout.strip().split('\t')[0]
|
||
|
|
logging.info('No revision specified. Using HEAD: %s', head_rev)
|
||
|
|
new_cr_rev = head_rev
|
||
|
|
|
||
|
|
deps_filename = os.path.join(CHECKOUT_ROOT_DIR, 'DEPS')
|
||
|
|
local_deps = ParseLocalDepsFile(deps_filename)
|
||
|
|
current_cr_rev = local_deps['vars']['chromium_revision']
|
||
|
|
|
||
|
|
current_commit_pos = ParseCommitPosition(ReadRemoteCrCommit(current_cr_rev))
|
||
|
|
new_commit_pos = ParseCommitPosition(ReadRemoteCrCommit(new_cr_rev))
|
||
|
|
|
||
|
|
current_cr_deps = ParseRemoteCrDepsFile(current_cr_rev)
|
||
|
|
new_cr_deps = ParseRemoteCrDepsFile(new_cr_rev)
|
||
|
|
|
||
|
|
if new_commit_pos > current_commit_pos or opts.allow_reverse:
|
||
|
|
changed_deps = sorted(CalculateChangedDeps(current_cr_deps, new_cr_deps))
|
||
|
|
clang_change = CalculateChangedClang(new_cr_rev)
|
||
|
|
commit_msg = GenerateCommitMessage(current_cr_rev, new_cr_rev,
|
||
|
|
current_commit_pos, new_commit_pos,
|
||
|
|
changed_deps, clang_change)
|
||
|
|
logging.debug('Commit message:\n%s', commit_msg)
|
||
|
|
else:
|
||
|
|
logging.info('Currently pinned chromium_revision: %s (#%s) is newer than '
|
||
|
|
'%s (#%s). To roll to older revisions, you must pass the '
|
||
|
|
'--allow-reverse flag.\n'
|
||
|
|
'Aborting without action.', current_cr_rev, current_commit_pos,
|
||
|
|
new_cr_rev, new_commit_pos)
|
||
|
|
return 0
|
||
|
|
|
||
|
|
_CreateRollBranch(opts.dry_run)
|
||
|
|
UpdateDeps(deps_filename, current_cr_rev, new_cr_rev)
|
||
|
|
_LocalCommit(commit_msg, opts.dry_run)
|
||
|
|
_UploadCL(opts.dry_run, opts.rietveld_email)
|
||
|
|
_SendToCQ(opts.dry_run, opts.skip_cq)
|
||
|
|
return 0
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
sys.exit(main())
|