deps/v8/tools/push-to-trunk/common_includes.py
#!/usr/bin/env python
# Copyright 2013 the V8 project authors. All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import argparse
import datetime
import httplib
import imp
import json
import os
import re
import subprocess
import sys
import textwrap
import time
import urllib
import urllib2
from git_recipes import GitRecipesMixin
from git_recipes import GitFailedException
PERSISTFILE_BASENAME = "PERSISTFILE_BASENAME"
BRANCHNAME = "BRANCHNAME"
DOT_GIT_LOCATION = "DOT_GIT_LOCATION"
VERSION_FILE = "VERSION_FILE"
CHANGELOG_FILE = "CHANGELOG_FILE"
CHANGELOG_ENTRY_FILE = "CHANGELOG_ENTRY_FILE"
COMMITMSG_FILE = "COMMITMSG_FILE"
PATCH_FILE = "PATCH_FILE"
def TextToFile(text, file_name):
with open(file_name, "w") as f:
f.write(text)
def AppendToFile(text, file_name):
with open(file_name, "a") as f:
f.write(text)
def LinesInFile(file_name):
with open(file_name) as f:
for line in f:
yield line
def FileToText(file_name):
with open(file_name) as f:
return f.read()
def MSub(rexp, replacement, text):
return re.sub(rexp, replacement, text, flags=re.MULTILINE)
def Fill80(line):
# Replace tabs and remove surrounding space.
line = re.sub(r"\t", r" ", line.strip())
# Format with 8 characters indentation and line width 80.
return textwrap.fill(line, width=80, initial_indent=" ",
subsequent_indent=" ")
def MakeComment(text):
return MSub(r"^( ?)", "#", text)
def StripComments(text):
# Use split not splitlines to keep terminal newlines.
return "\n".join(filter(lambda x: not x.startswith("#"), text.split("\n")))
def MakeChangeLogBody(commit_messages, auto_format=False):
result = ""
added_titles = set()
for (title, body, author) in commit_messages:
# TODO(machenbach): Better check for reverts. A revert should remove the
# original CL from the actual log entry.
title = title.strip()
if auto_format:
# Only add commits that set the LOG flag correctly.
log_exp = r"^[ \t]*LOG[ \t]*=[ \t]*(?:(?:Y(?:ES)?)|TRUE)"
if not re.search(log_exp, body, flags=re.I | re.M):
continue
# Never include reverts.
if title.startswith("Revert "):
continue
# Don't include duplicates.
if title in added_titles:
continue
# Add and format the commit's title and bug reference. Move dot to the end.
added_titles.add(title)
raw_title = re.sub(r"(\.|\?|!)$", "", title)
bug_reference = MakeChangeLogBugReference(body)
space = " " if bug_reference else ""
result += "%s\n" % Fill80("%s%s%s." % (raw_title, space, bug_reference))
# Append the commit's author for reference if not in auto-format mode.
if not auto_format:
result += "%s\n" % Fill80("(%s)" % author.strip())
result += "\n"
return result
def MakeChangeLogBugReference(body):
"""Grep for "BUG=xxxx" lines in the commit message and convert them to
"(issue xxxx)".
"""
crbugs = []
v8bugs = []
def AddIssues(text):
ref = re.match(r"^BUG[ \t]*=[ \t]*(.+)$", text.strip())
if not ref:
return
for bug in ref.group(1).split(","):
bug = bug.strip()
match = re.match(r"^v8:(\d+)$", bug)
if match: v8bugs.append(int(match.group(1)))
else:
match = re.match(r"^(?:chromium:)?(\d+)$", bug)
if match: crbugs.append(int(match.group(1)))
# Add issues to crbugs and v8bugs.
map(AddIssues, body.splitlines())
# Filter duplicates, sort, stringify.
crbugs = map(str, sorted(set(crbugs)))
v8bugs = map(str, sorted(set(v8bugs)))
bug_groups = []
def FormatIssues(prefix, bugs):
if len(bugs) > 0:
plural = "s" if len(bugs) > 1 else ""
bug_groups.append("%sissue%s %s" % (prefix, plural, ", ".join(bugs)))
FormatIssues("", v8bugs)
FormatIssues("Chromium ", crbugs)
if len(bug_groups) > 0:
return "(%s)" % ", ".join(bug_groups)
else:
return ""
def SortingKey(version):
"""Key for sorting version number strings: '3.11' > '3.2.1.1'"""
version_keys = map(int, version.split("."))
# Fill up to full version numbers to normalize comparison.
while len(version_keys) < 4: # pragma: no cover
version_keys.append(0)
# Fill digits.
return ".".join(map("{0:04d}".format, version_keys))
# Some commands don't like the pipe, e.g. calling vi from within the script or
# from subscripts like git cl upload.
def Command(cmd, args="", prefix="", pipe=True):
# TODO(machenbach): Use timeout.
cmd_line = "%s %s %s" % (prefix, cmd, args)
print "Command: %s" % cmd_line
sys.stdout.flush()
try:
if pipe:
return subprocess.check_output(cmd_line, shell=True)
else:
return subprocess.check_call(cmd_line, shell=True)
except subprocess.CalledProcessError:
return None
finally:
sys.stdout.flush()
sys.stderr.flush()
# Wrapper for side effects.
class SideEffectHandler(object): # pragma: no cover
def Call(self, fun, *args, **kwargs):
return fun(*args, **kwargs)
def Command(self, cmd, args="", prefix="", pipe=True):
return Command(cmd, args, prefix, pipe)
def ReadLine(self):
return sys.stdin.readline().strip()
def ReadURL(self, url, params=None):
# pylint: disable=E1121
url_fh = urllib2.urlopen(url, params, 60)
try:
return url_fh.read()
finally:
url_fh.close()
def ReadClusterFuzzAPI(self, api_key, **params):
params["api_key"] = api_key.strip()
params = urllib.urlencode(params)
headers = {"Content-type": "application/x-www-form-urlencoded"}
conn = httplib.HTTPSConnection("backend-dot-cluster-fuzz.appspot.com")
conn.request("POST", "/_api/", params, headers)
response = conn.getresponse()
data = response.read()
try:
return json.loads(data)
except:
print data
print "ERROR: Could not read response. Is your key valid?"
raise
def Sleep(self, seconds):
time.sleep(seconds)
def GetDate(self):
return datetime.date.today().strftime("%Y-%m-%d")
def GetUTCStamp(self):
return time.mktime(datetime.datetime.utcnow().timetuple())
DEFAULT_SIDE_EFFECT_HANDLER = SideEffectHandler()
class NoRetryException(Exception):
pass
class Step(GitRecipesMixin):
def __init__(self, text, requires, number, config, state, options, handler):
self._text = text
self._requires = requires
self._number = number
self._config = config
self._state = state
self._options = options
self._side_effect_handler = handler
assert self._number >= 0
assert self._config is not None
assert self._state is not None
assert self._side_effect_handler is not None
def __getitem__(self, key):
# Convenience method to allow direct [] access on step classes for
# manipulating the backed state dict.
return self._state[key]
def __setitem__(self, key, value):
# Convenience method to allow direct [] access on step classes for
# manipulating the backed state dict.
self._state[key] = value
def Config(self, key):
return self._config[key]
def Run(self):
# Restore state.
state_file = "%s-state.json" % self._config[PERSISTFILE_BASENAME]
if not self._state and os.path.exists(state_file):
self._state.update(json.loads(FileToText(state_file)))
# Skip step if requirement is not met.
if self._requires and not self._state.get(self._requires):
return
print ">>> Step %d: %s" % (self._number, self._text)
try:
return self.RunStep()
finally:
# Persist state.
TextToFile(json.dumps(self._state), state_file)
def RunStep(self): # pragma: no cover
raise NotImplementedError
def Retry(self, cb, retry_on=None, wait_plan=None):
""" Retry a function.
Params:
cb: The function to retry.
retry_on: A callback that takes the result of the function and returns
True if the function should be retried. A function throwing an
exception is always retried.
wait_plan: A list of waiting delays between retries in seconds. The
maximum number of retries is len(wait_plan).
"""
retry_on = retry_on or (lambda x: False)
wait_plan = list(wait_plan or [])
wait_plan.reverse()
while True:
got_exception = False
try:
result = cb()
except NoRetryException, e:
raise e
except Exception:
got_exception = True
if got_exception or retry_on(result):
if not wait_plan: # pragma: no cover
raise Exception("Retried too often. Giving up.")
wait_time = wait_plan.pop()
print "Waiting for %f seconds." % wait_time
self._side_effect_handler.Sleep(wait_time)
print "Retrying..."
else:
return result
def ReadLine(self, default=None):
# Don't prompt in forced mode.
if self._options.force_readline_defaults and default is not None:
print "%s (forced)" % default
return default
else:
return self._side_effect_handler.ReadLine()
def Git(self, args="", prefix="", pipe=True, retry_on=None):
cmd = lambda: self._side_effect_handler.Command("git", args, prefix, pipe)
result = self.Retry(cmd, retry_on, [5, 30])
if result is None:
raise GitFailedException("'git %s' failed." % args)
return result
def SVN(self, args="", prefix="", pipe=True, retry_on=None):
cmd = lambda: self._side_effect_handler.Command("svn", args, prefix, pipe)
return self.Retry(cmd, retry_on, [5, 30])
def Editor(self, args):
if self._options.requires_editor:
return self._side_effect_handler.Command(os.environ["EDITOR"], args,
pipe=False)
def ReadURL(self, url, params=None, retry_on=None, wait_plan=None):
wait_plan = wait_plan or [3, 60, 600]
cmd = lambda: self._side_effect_handler.ReadURL(url, params)
return self.Retry(cmd, retry_on, wait_plan)
def GetDate(self):
return self._side_effect_handler.GetDate()
def Die(self, msg=""):
if msg != "":
print "Error: %s" % msg
print "Exiting"
raise Exception(msg)
def DieNoManualMode(self, msg=""):
if not self._options.manual: # pragma: no cover
msg = msg or "Only available in manual mode."
self.Die(msg)
def Confirm(self, msg):
print "%s [Y/n] " % msg,
answer = self.ReadLine(default="Y")
return answer == "" or answer == "Y" or answer == "y"
def DeleteBranch(self, name):
for line in self.GitBranch().splitlines():
if re.match(r"\*?\s*%s$" % re.escape(name), line):
msg = "Branch %s exists, do you want to delete it?" % name
if self.Confirm(msg):
self.GitDeleteBranch(name)
print "Branch %s deleted." % name
else:
msg = "Can't continue. Please delete branch %s and try again." % name
self.Die(msg)
def InitialEnvironmentChecks(self):
# Cancel if this is not a git checkout.
if not os.path.exists(self._config[DOT_GIT_LOCATION]): # pragma: no cover
self.Die("This is not a git checkout, this script won't work for you.")
# Cancel if EDITOR is unset or not executable.
if (self._options.requires_editor and (not os.environ.get("EDITOR") or
Command("which", os.environ["EDITOR"]) is None)): # pragma: no cover
self.Die("Please set your EDITOR environment variable, you'll need it.")
def CommonPrepare(self):
# Check for a clean workdir.
if not self.GitIsWorkdirClean(): # pragma: no cover
self.Die("Workspace is not clean. Please commit or undo your changes.")
# Persist current branch.
self["current_branch"] = self.GitCurrentBranch()
# Fetch unfetched revisions.
self.GitSVNFetch()
def PrepareBranch(self):
# Delete the branch that will be created later if it exists already.
self.DeleteBranch(self._config[BRANCHNAME])
def CommonCleanup(self):
self.GitCheckout(self["current_branch"])
if self._config[BRANCHNAME] != self["current_branch"]:
self.GitDeleteBranch(self._config[BRANCHNAME])
# Clean up all temporary files.
Command("rm", "-f %s*" % self._config[PERSISTFILE_BASENAME])
def ReadAndPersistVersion(self, prefix=""):
def ReadAndPersist(var_name, def_name):
match = re.match(r"^#define %s\s+(\d*)" % def_name, line)
if match:
value = match.group(1)
self["%s%s" % (prefix, var_name)] = value
for line in LinesInFile(self._config[VERSION_FILE]):
for (var_name, def_name) in [("major", "MAJOR_VERSION"),
("minor", "MINOR_VERSION"),
("build", "BUILD_NUMBER"),
("patch", "PATCH_LEVEL")]:
ReadAndPersist(var_name, def_name)
def WaitForLGTM(self):
print ("Please wait for an LGTM, then type \"LGTM<Return>\" to commit "
"your change. (If you need to iterate on the patch or double check "
"that it's sane, do so in another shell, but remember to not "
"change the headline of the uploaded CL.")
answer = ""
while answer != "LGTM":
print "> ",
answer = self.ReadLine(None if self._options.wait_for_lgtm else "LGTM")
if answer != "LGTM":
print "That was not 'LGTM'."
def WaitForResolvingConflicts(self, patch_file):
print("Applying the patch \"%s\" failed. Either type \"ABORT<Return>\", "
"or resolve the conflicts, stage *all* touched files with "
"'git add', and type \"RESOLVED<Return>\"")
self.DieNoManualMode()
answer = ""
while answer != "RESOLVED":
if answer == "ABORT":
self.Die("Applying the patch failed.")
if answer != "":
print "That was not 'RESOLVED' or 'ABORT'."
print "> ",
answer = self.ReadLine()
# Takes a file containing the patch to apply as first argument.
def ApplyPatch(self, patch_file, revert=False):
try:
self.GitApplyPatch(patch_file, revert)
except GitFailedException:
self.WaitForResolvingConflicts(patch_file)
def FindLastTrunkPush(self, parent_hash="", include_patches=False):
push_pattern = "^Version [[:digit:]]*\.[[:digit:]]*\.[[:digit:]]*"
if not include_patches:
# Non-patched versions only have three numbers followed by the "(based
# on...) comment."
push_pattern += " (based"
branch = "" if parent_hash else "svn/trunk"
return self.GitLog(n=1, format="%H", grep=push_pattern,
parent_hash=parent_hash, branch=branch)
def ArrayToVersion(self, prefix):
return ".".join([self[prefix + "major"],
self[prefix + "minor"],
self[prefix + "build"],
self[prefix + "patch"]])
def SetVersion(self, version_file, prefix):
output = ""
for line in FileToText(version_file).splitlines():
if line.startswith("#define MAJOR_VERSION"):
line = re.sub("\d+$", self[prefix + "major"], line)
elif line.startswith("#define MINOR_VERSION"):
line = re.sub("\d+$", self[prefix + "minor"], line)
elif line.startswith("#define BUILD_NUMBER"):
line = re.sub("\d+$", self[prefix + "build"], line)
elif line.startswith("#define PATCH_LEVEL"):
line = re.sub("\d+$", self[prefix + "patch"], line)
output += "%s\n" % line
TextToFile(output, version_file)
class UploadStep(Step):
MESSAGE = "Upload for code review."
def RunStep(self):
if self._options.reviewer:
print "Using account %s for review." % self._options.reviewer
reviewer = self._options.reviewer
else:
print "Please enter the email address of a V8 reviewer for your patch: ",
self.DieNoManualMode("A reviewer must be specified in forced mode.")
reviewer = self.ReadLine()
self.GitUpload(reviewer, self._options.author, self._options.force_upload)
class DetermineV8Sheriff(Step):
MESSAGE = "Determine the V8 sheriff for code review."
def RunStep(self):
self["sheriff"] = None
if not self._options.sheriff: # pragma: no cover
return
try:
# The googlers mapping maps @google.com accounts to @chromium.org
# accounts.
googlers = imp.load_source('googlers_mapping',
self._options.googlers_mapping)
googlers = googlers.list_to_dict(googlers.get_list())
except: # pragma: no cover
print "Skip determining sheriff without googler mapping."
return
# The sheriff determined by the rotation on the waterfall has a
# @google.com account.
url = "https://chromium-build.appspot.com/p/chromium/sheriff_v8.js"
match = re.match(r"document\.write\('(\w+)'\)", self.ReadURL(url))
# If "channel is sheriff", we can't match an account.
if match:
g_name = match.group(1)
self["sheriff"] = googlers.get(g_name + "@google.com",
g_name + "@chromium.org")
self._options.reviewer = self["sheriff"]
print "Found active sheriff: %s" % self["sheriff"]
else:
print "No active sheriff found."
def MakeStep(step_class=Step, number=0, state=None, config=None,
options=None, side_effect_handler=DEFAULT_SIDE_EFFECT_HANDLER):
# Allow to pass in empty dictionaries.
state = state if state is not None else {}
config = config if config is not None else {}
try:
message = step_class.MESSAGE
except AttributeError:
message = step_class.__name__
try:
requires = step_class.REQUIRES
except AttributeError:
requires = None
return step_class(message, requires, number=number, config=config,
state=state, options=options,
handler=side_effect_handler)
class ScriptsBase(object):
# TODO(machenbach): Move static config here.
def __init__(self, config, side_effect_handler=DEFAULT_SIDE_EFFECT_HANDLER,
state=None):
self._config = config
self._side_effect_handler = side_effect_handler
self._state = state if state is not None else {}
def _Description(self):
return None
def _PrepareOptions(self, parser):
pass
def _ProcessOptions(self, options):
return True
def _Steps(self): # pragma: no cover
raise Exception("Not implemented.")
def MakeOptions(self, args=None):
parser = argparse.ArgumentParser(description=self._Description())
parser.add_argument("-a", "--author", default="",
help="The author email used for rietveld.")
parser.add_argument("-g", "--googlers-mapping",
help="Path to the script mapping google accounts.")
parser.add_argument("-r", "--reviewer", default="",
help="The account name to be used for reviews.")
parser.add_argument("--sheriff", default=False, action="store_true",
help=("Determine current sheriff to review CLs. On "
"success, this will overwrite the reviewer "
"option."))
parser.add_argument("-s", "--step",
help="Specify the step where to start work. Default: 0.",
default=0, type=int)
self._PrepareOptions(parser)
if args is None: # pragma: no cover
options = parser.parse_args()
else:
options = parser.parse_args(args)
# Process common options.
if options.step < 0: # pragma: no cover
print "Bad step number %d" % options.step
parser.print_help()
return None
if options.sheriff and not options.googlers_mapping: # pragma: no cover
print "To determine the current sheriff, requires the googler mapping"
parser.print_help()
return None
# Defaults for options, common to all scripts.
options.manual = getattr(options, "manual", True)
options.force = getattr(options, "force", False)
# Derived options.
options.requires_editor = not options.force
options.wait_for_lgtm = not options.force
options.force_readline_defaults = not options.manual
options.force_upload = not options.manual
# Process script specific options.
if not self._ProcessOptions(options):
parser.print_help()
return None
return options
def RunSteps(self, step_classes, args=None):
options = self.MakeOptions(args)
if not options:
return 1
state_file = "%s-state.json" % self._config[PERSISTFILE_BASENAME]
if options.step == 0 and os.path.exists(state_file):
os.remove(state_file)
steps = []
for (number, step_class) in enumerate(step_classes):
steps.append(MakeStep(step_class, number, self._state, self._config,
options, self._side_effect_handler))
for step in steps[options.step:]:
if step.Run():
return 1
return 0
def Run(self, args=None):
return self.RunSteps(self._Steps(), args)