v8/tools/release/push_to_candidates.py

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#!/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 os
import sys
import tempfile
import urllib2
from common_includes import *
PUSH_MSG_GIT_SUFFIX = " (based on %s)"
class Preparation(Step):
MESSAGE = "Preparation."
def RunStep(self):
self.InitialEnvironmentChecks(self.default_cwd)
self.CommonPrepare()
if(self["current_branch"] == self.Config("CANDIDATESBRANCH")
or self["current_branch"] == self.Config("BRANCHNAME")):
print "Warning: Script started on branch %s" % self["current_branch"]
self.PrepareBranch()
self.DeleteBranch(self.Config("CANDIDATESBRANCH"))
class FreshBranch(Step):
MESSAGE = "Create a fresh branch."
def RunStep(self):
self.GitCreateBranch(self.Config("BRANCHNAME"),
self.vc.RemoteMasterBranch())
class PreparePushRevision(Step):
MESSAGE = "Check which revision to push."
def RunStep(self):
if self._options.revision:
self["push_hash"] = self._options.revision
else:
self["push_hash"] = self.GitLog(n=1, format="%H", git_hash="HEAD")
if not self["push_hash"]: # pragma: no cover
self.Die("Could not determine the git hash for the push.")
class IncrementVersion(Step):
MESSAGE = "Increment version number."
def RunStep(self):
latest_version = self.GetLatestVersion()
# The version file on master can be used to bump up major/minor at
# branch time.
self.GitCheckoutFile(VERSION_FILE, self.vc.RemoteMasterBranch())
self.ReadAndPersistVersion("master_")
master_version = self.ArrayToVersion("master_")
# Use the highest version from master or from tags to determine the new
# version.
authoritative_version = sorted(
[master_version, latest_version], key=SortingKey)[1]
self.StoreVersion(authoritative_version, "authoritative_")
# Variables prefixed with 'new_' contain the new version numbers for the
# ongoing candidates push.
self["new_major"] = self["authoritative_major"]
self["new_minor"] = self["authoritative_minor"]
self["new_build"] = str(int(self["authoritative_build"]) + 1)
# Make sure patch level is 0 in a new push.
self["new_patch"] = "0"
self["version"] = "%s.%s.%s" % (self["new_major"],
self["new_minor"],
self["new_build"])
print ("Incremented version to %s" % self["version"])
class DetectLastRelease(Step):
MESSAGE = "Detect commit ID of last release base."
def RunStep(self):
if self._options.last_master:
self["last_push_master"] = self._options.last_master
else:
self["last_push_master"] = self.GetLatestReleaseBase()
class PrepareChangeLog(Step):
MESSAGE = "Prepare raw ChangeLog entry."
def Reload(self, body):
"""Attempts to reload the commit message from rietveld in order to allow
late changes to the LOG flag. Note: This is brittle to future changes of
the web page name or structure.
"""
match = re.search(r"^Review URL: https://codereview\.chromium\.org/(\d+)$",
body, flags=re.M)
if match:
cl_url = ("https://codereview.chromium.org/%s/description"
% match.group(1))
try:
# Fetch from Rietveld but only retry once with one second delay since
# there might be many revisions.
body = self.ReadURL(cl_url, wait_plan=[1])
except urllib2.URLError: # pragma: no cover
pass
return body
def RunStep(self):
self["date"] = self.GetDate()
output = "%s: Version %s\n\n" % (self["date"], self["version"])
TextToFile(output, self.Config("CHANGELOG_ENTRY_FILE"))
commits = self.GitLog(format="%H",
git_hash="%s..%s" % (self["last_push_master"],
self["push_hash"]))
# Cache raw commit messages.
commit_messages = [
[
self.GitLog(n=1, format="%s", git_hash=commit),
self.Reload(self.GitLog(n=1, format="%B", git_hash=commit)),
self.GitLog(n=1, format="%an", git_hash=commit),
] for commit in commits.splitlines()
]
# Auto-format commit messages.
body = MakeChangeLogBody(commit_messages, auto_format=True)
AppendToFile(body, self.Config("CHANGELOG_ENTRY_FILE"))
msg = (" Performance and stability improvements on all platforms."
"\n#\n# The change log above is auto-generated. Please review if "
"all relevant\n# commit messages from the list below are included."
"\n# All lines starting with # will be stripped.\n#\n")
AppendToFile(msg, self.Config("CHANGELOG_ENTRY_FILE"))
# Include unformatted commit messages as a reference in a comment.
comment_body = MakeComment(MakeChangeLogBody(commit_messages))
AppendToFile(comment_body, self.Config("CHANGELOG_ENTRY_FILE"))
class EditChangeLog(Step):
MESSAGE = "Edit ChangeLog entry."
def RunStep(self):
print ("Please press <Return> to have your EDITOR open the ChangeLog "
"entry, then edit its contents to your liking. When you're done, "
"save the file and exit your EDITOR. ")
self.ReadLine(default="")
self.Editor(self.Config("CHANGELOG_ENTRY_FILE"))
# Strip comments and reformat with correct indentation.
changelog_entry = FileToText(self.Config("CHANGELOG_ENTRY_FILE")).rstrip()
changelog_entry = StripComments(changelog_entry)
changelog_entry = "\n".join(map(Fill80, changelog_entry.splitlines()))
changelog_entry = changelog_entry.lstrip()
if changelog_entry == "": # pragma: no cover
self.Die("Empty ChangeLog entry.")
# Safe new change log for adding it later to the candidates patch.
TextToFile(changelog_entry, self.Config("CHANGELOG_ENTRY_FILE"))
class StragglerCommits(Step):
MESSAGE = ("Fetch straggler commits that sneaked in since this script was "
"started.")
def RunStep(self):
self.vc.Fetch()
self.GitCheckout(self.vc.RemoteMasterBranch())
class SquashCommits(Step):
MESSAGE = "Squash commits into one."
def RunStep(self):
# Instead of relying on "git rebase -i", we'll just create a diff, because
# that's easier to automate.
TextToFile(self.GitDiff(self.vc.RemoteCandidateBranch(),
self["push_hash"]),
self.Config("PATCH_FILE"))
# Convert the ChangeLog entry to commit message format.
text = FileToText(self.Config("CHANGELOG_ENTRY_FILE"))
# Remove date and trailing white space.
text = re.sub(r"^%s: " % self["date"], "", text.rstrip())
# Show the used master hash in the commit message.
suffix = PUSH_MSG_GIT_SUFFIX % self["push_hash"]
text = MSub(r"^(Version \d+\.\d+\.\d+)$", "\\1%s" % suffix, text)
# Remove indentation and merge paragraphs into single long lines, keeping
# empty lines between them.
def SplitMapJoin(split_text, fun, join_text):
return lambda text: join_text.join(map(fun, text.split(split_text)))
strip = lambda line: line.strip()
text = SplitMapJoin("\n\n", SplitMapJoin("\n", strip, " "), "\n\n")(text)
if not text: # pragma: no cover
self.Die("Commit message editing failed.")
self["commit_title"] = text.splitlines()[0]
TextToFile(text, self.Config("COMMITMSG_FILE"))
class NewBranch(Step):
MESSAGE = "Create a new branch from candidates."
def RunStep(self):
self.GitCreateBranch(self.Config("CANDIDATESBRANCH"),
self.vc.RemoteCandidateBranch())
class ApplyChanges(Step):
MESSAGE = "Apply squashed changes."
def RunStep(self):
self.ApplyPatch(self.Config("PATCH_FILE"))
os.remove(self.Config("PATCH_FILE"))
# The change log has been modified by the patch. Reset it to the version
# on candidates and apply the exact changes determined by this
# PrepareChangeLog step above.
self.GitCheckoutFile(CHANGELOG_FILE, self.vc.RemoteCandidateBranch())
# The version file has been modified by the patch. Reset it to the version
# on candidates.
self.GitCheckoutFile(VERSION_FILE, self.vc.RemoteCandidateBranch())
class CommitSquash(Step):
MESSAGE = "Commit to local candidates branch."
def RunStep(self):
# Make a first commit with a slightly different title to not confuse
# the tagging.
msg = FileToText(self.Config("COMMITMSG_FILE")).splitlines()
msg[0] = msg[0].replace("(based on", "(squashed - based on")
self.GitCommit(message = "\n".join(msg))
class PrepareVersionBranch(Step):
MESSAGE = "Prepare new branch to commit version and changelog file."
def RunStep(self):
self.GitCheckout("master")
self.Git("fetch")
self.GitDeleteBranch(self.Config("CANDIDATESBRANCH"))
self.GitCreateBranch(self.Config("CANDIDATESBRANCH"),
self.vc.RemoteCandidateBranch())
class AddChangeLog(Step):
MESSAGE = "Add ChangeLog changes to candidates branch."
def RunStep(self):
changelog_entry = FileToText(self.Config("CHANGELOG_ENTRY_FILE"))
old_change_log = FileToText(os.path.join(self.default_cwd, CHANGELOG_FILE))
new_change_log = "%s\n\n\n%s" % (changelog_entry, old_change_log)
TextToFile(new_change_log, os.path.join(self.default_cwd, CHANGELOG_FILE))
os.remove(self.Config("CHANGELOG_ENTRY_FILE"))
class SetVersion(Step):
MESSAGE = "Set correct version for candidates."
def RunStep(self):
self.SetVersion(os.path.join(self.default_cwd, VERSION_FILE), "new_")
class CommitCandidate(Step):
MESSAGE = "Commit version and changelog to local candidates branch."
def RunStep(self):
self.GitCommit(file_name = self.Config("COMMITMSG_FILE"))
os.remove(self.Config("COMMITMSG_FILE"))
class SanityCheck(Step):
MESSAGE = "Sanity check."
def RunStep(self):
# TODO(machenbach): Run presubmit script here as it is now missing in the
# prepare push process.
if not self.Confirm("Please check if your local checkout is sane: Inspect "
"%s, compile, run tests. Do you want to commit this new candidates "
"revision to the repository?" % VERSION_FILE):
self.Die("Execution canceled.") # pragma: no cover
class Land(Step):
MESSAGE = "Land the patch."
def RunStep(self):
self.vc.CLLand()
class TagRevision(Step):
MESSAGE = "Tag the new revision."
def RunStep(self):
self.vc.Tag(
self["version"], self.vc.RemoteCandidateBranch(), self["commit_title"])
class CleanUp(Step):
MESSAGE = "Done!"
def RunStep(self):
print("Congratulations, you have successfully created the candidates "
"revision %s."
% self["version"])
self.CommonCleanup()
if self.Config("CANDIDATESBRANCH") != self["current_branch"]:
self.GitDeleteBranch(self.Config("CANDIDATESBRANCH"))
class PushToCandidates(ScriptsBase):
def _PrepareOptions(self, parser):
group = parser.add_mutually_exclusive_group()
group.add_argument("-f", "--force",
help="Don't prompt the user.",
default=False, action="store_true")
group.add_argument("-m", "--manual",
help="Prompt the user at every important step.",
default=False, action="store_true")
parser.add_argument("-b", "--last-master",
help=("The git commit ID of the last master "
"revision that was pushed to candidates. This is"
" used for the auto-generated ChangeLog entry."))
parser.add_argument("-l", "--last-push",
help="The git commit ID of the last candidates push.")
parser.add_argument("-R", "--revision",
help="The git commit ID to push (defaults to HEAD).")
def _ProcessOptions(self, options): # pragma: no cover
if not options.manual and not options.reviewer:
print "A reviewer (-r) is required in (semi-)automatic mode."
return False
if not options.manual and not options.author:
print "Specify your chromium.org email with -a in (semi-)automatic mode."
return False
options.tbr_commit = not options.manual
return True
def _Config(self):
return {
"BRANCHNAME": "prepare-push",
"CANDIDATESBRANCH": "candidates-push",
"PERSISTFILE_BASENAME": "/tmp/v8-push-to-candidates-tempfile",
"CHANGELOG_ENTRY_FILE":
"/tmp/v8-push-to-candidates-tempfile-changelog-entry",
"PATCH_FILE": "/tmp/v8-push-to-candidates-tempfile-patch-file",
"COMMITMSG_FILE": "/tmp/v8-push-to-candidates-tempfile-commitmsg",
}
def _Steps(self):
return [
Preparation,
FreshBranch,
PreparePushRevision,
IncrementVersion,
DetectLastRelease,
PrepareChangeLog,
EditChangeLog,
StragglerCommits,
SquashCommits,
NewBranch,
ApplyChanges,
CommitSquash,
SanityCheck,
Land,
PrepareVersionBranch,
AddChangeLog,
SetVersion,
CommitCandidate,
Land,
TagRevision,
CleanUp,
]
if __name__ == "__main__": # pragma: no cover
sys.exit(PushToCandidates().Run())