diff options
Diffstat (limited to 'chromium/v8/tools/push-to-trunk/releases.py')
-rwxr-xr-x | chromium/v8/tools/push-to-trunk/releases.py | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/chromium/v8/tools/push-to-trunk/releases.py b/chromium/v8/tools/push-to-trunk/releases.py new file mode 100755 index 00000000000..2a22b912ebf --- /dev/null +++ b/chromium/v8/tools/push-to-trunk/releases.py @@ -0,0 +1,463 @@ +#!/usr/bin/env python +# Copyright 2014 the V8 project authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +# This script retrieves the history of all V8 branches and trunk revisions and +# their corresponding Chromium revisions. + +# Requires a chromium checkout with branch heads: +# gclient sync --with_branch_heads +# gclient fetch + +import argparse +import csv +import itertools +import json +import os +import re +import sys + +from common_includes import * + +DEPS_FILE = "DEPS_FILE" +CHROMIUM = "CHROMIUM" + +CONFIG = { + BRANCHNAME: "retrieve-v8-releases", + PERSISTFILE_BASENAME: "/tmp/v8-releases-tempfile", + DOT_GIT_LOCATION: ".git", + VERSION_FILE: "src/version.cc", + DEPS_FILE: "DEPS", +} + +# Expression for retrieving the bleeding edge revision from a commit message. +PUSH_MESSAGE_RE = re.compile(r".* \(based on bleeding_edge revision r(\d+)\)$") + +# Expression for retrieving the merged patches from a merge commit message +# (old and new format). +MERGE_MESSAGE_RE = re.compile(r"^.*[M|m]erged (.+)(\)| into).*$", re.M) + +# Expression for retrieving reverted patches from a commit message (old and +# new format). +ROLLBACK_MESSAGE_RE = re.compile(r"^.*[R|r]ollback of (.+)(\)| in).*$", re.M) + +# Expression for retrieving the code review link. +REVIEW_LINK_RE = re.compile(r"^Review URL: (.+)$", re.M) + +# Expression with three versions (historical) for extracting the v8 revision +# from the chromium DEPS file. +DEPS_RE = re.compile(r'^\s*(?:"v8_revision": "' + '|\(Var\("googlecode_url"\) % "v8"\) \+ "\/trunk@' + '|"http\:\/\/v8\.googlecode\.com\/svn\/trunk@)' + '([0-9]+)".*$', re.M) + + +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: + version_keys.append(0) + # Fill digits. + return ".".join(map("{0:03d}".format, version_keys)) + + +def SortBranches(branches): + """Sort branches with version number names.""" + return sorted(branches, key=SortingKey, reverse=True) + + +def FilterDuplicatesAndReverse(cr_releases): + """Returns the chromium releases in reverse order filtered by v8 revision + duplicates. + + cr_releases is a list of [cr_rev, v8_rev] reverse-sorted by cr_rev. + """ + last = "" + result = [] + for release in reversed(cr_releases): + if last == release[1]: + continue + last = release[1] + result.append(release) + return result + + +def BuildRevisionRanges(cr_releases): + """Returns a mapping of v8 revision -> chromium ranges. + The ranges are comma-separated, each range has the form R1:R2. The newest + entry is the only one of the form R1, as there is no end range. + + cr_releases is a list of [cr_rev, v8_rev] reverse-sorted by cr_rev. + cr_rev either refers to a chromium svn revision or a chromium branch number. + """ + range_lists = {} + cr_releases = FilterDuplicatesAndReverse(cr_releases) + + # Visit pairs of cr releases from oldest to newest. + for cr_from, cr_to in itertools.izip( + cr_releases, itertools.islice(cr_releases, 1, None)): + + # Assume the chromium revisions are all different. + assert cr_from[0] != cr_to[0] + + # TODO(machenbach): Subtraction is not git friendly. + ran = "%s:%d" % (cr_from[0], int(cr_to[0]) - 1) + + # Collect the ranges in lists per revision. + range_lists.setdefault(cr_from[1], []).append(ran) + + # Add the newest revision. + if cr_releases: + range_lists.setdefault(cr_releases[-1][1], []).append(cr_releases[-1][0]) + + # Stringify and comma-separate the range lists. + return dict((rev, ", ".join(ran)) for rev, ran in range_lists.iteritems()) + + +def MatchSafe(match): + if match: + return match.group(1) + else: + return "" + + +class Preparation(Step): + MESSAGE = "Preparation." + + def RunStep(self): + self.CommonPrepare() + self.PrepareBranch() + + +class RetrieveV8Releases(Step): + MESSAGE = "Retrieve all V8 releases." + + def ExceedsMax(self, releases): + return (self._options.max_releases > 0 + and len(releases) > self._options.max_releases) + + def GetBleedingEdgeFromPush(self, title): + return MatchSafe(PUSH_MESSAGE_RE.match(title)) + + def GetMergedPatches(self, body): + patches = MatchSafe(MERGE_MESSAGE_RE.search(body)) + if not patches: + patches = MatchSafe(ROLLBACK_MESSAGE_RE.search(body)) + if patches: + # Indicate reverted patches with a "-". + patches = "-%s" % patches + return patches + + def GetRelease(self, git_hash, branch): + self.ReadAndPersistVersion() + base_version = [self["major"], self["minor"], self["build"]] + version = ".".join(base_version) + body = self.GitLog(n=1, format="%B", git_hash=git_hash) + + patches = "" + if self["patch"] != "0": + version += ".%s" % self["patch"] + patches = self.GetMergedPatches(body) + + title = self.GitLog(n=1, format="%s", git_hash=git_hash) + revision = self.GitSVNFindSVNRev(git_hash) + return { + # The SVN revision on the branch. + "revision": revision, + # The SVN revision on bleeding edge (only for newer trunk pushes). + "bleeding_edge": self.GetBleedingEdgeFromPush(title), + # The branch name. + "branch": branch, + # The version for displaying in the form 3.26.3 or 3.26.3.12. + "version": version, + # The date of the commit. + "date": self.GitLog(n=1, format="%ci", git_hash=git_hash), + # Merged patches if available in the form 'r1234, r2345'. + "patches_merged": patches, + # Default for easier output formatting. + "chromium_revision": "", + # Default for easier output formatting. + "chromium_branch": "", + # Link to the CL on code review. Trunk pushes are not uploaded, so this + # field will be populated below with the recent roll CL link. + "review_link": MatchSafe(REVIEW_LINK_RE.search(body)), + # Link to the commit message on google code. + "revision_link": ("https://code.google.com/p/v8/source/detail?r=%s" + % revision), + }, self["patch"] + + def GetReleasesFromBranch(self, branch): + self.GitReset("svn/%s" % branch) + releases = [] + try: + for git_hash in self.GitLog(format="%H").splitlines(): + if self._config[VERSION_FILE] not in self.GitChangedFiles(git_hash): + continue + if self.ExceedsMax(releases): + break # pragma: no cover + if not self.GitCheckoutFileSafe(self._config[VERSION_FILE], git_hash): + break # pragma: no cover + + release, patch_level = self.GetRelease(git_hash, branch) + releases.append(release) + + # Follow branches only until their creation point. + # TODO(machenbach): This omits patches if the version file wasn't + # manipulated correctly. Find a better way to detect the point where + # the parent of the branch head leads to the trunk branch. + if branch != "trunk" and patch_level == "0": + break + + # Allow Ctrl-C interrupt. + except (KeyboardInterrupt, SystemExit): # pragma: no cover + pass + + # Clean up checked-out version file. + self.GitCheckoutFileSafe(self._config[VERSION_FILE], "HEAD") + return releases + + def RunStep(self): + self.GitCreateBranch(self._config[BRANCHNAME]) + # Get relevant remote branches, e.g. "svn/3.25". + branches = filter(lambda s: re.match(r"^svn/\d+\.\d+$", s), + self.GitRemotes()) + # Remove 'svn/' prefix. + branches = map(lambda s: s[4:], branches) + + releases = [] + if self._options.branch == 'recent': + # Get only recent development on trunk, beta and stable. + if self._options.max_releases == 0: # pragma: no cover + self._options.max_releases = 10 + beta, stable = SortBranches(branches)[0:2] + releases += self.GetReleasesFromBranch(stable) + releases += self.GetReleasesFromBranch(beta) + releases += self.GetReleasesFromBranch("trunk") + elif self._options.branch == 'all': # pragma: no cover + # Retrieve the full release history. + for branch in branches: + releases += self.GetReleasesFromBranch(branch) + releases += self.GetReleasesFromBranch("trunk") + else: # pragma: no cover + # Retrieve history for a specified branch. + assert self._options.branch in branches + ["trunk"] + releases += self.GetReleasesFromBranch(self._options.branch) + + self["releases"] = sorted(releases, + key=lambda r: SortingKey(r["version"]), + reverse=True) + + +# TODO(machenbach): Parts of the Chromium setup are c/p from the chromium_roll +# script -> unify. +class CheckChromium(Step): + MESSAGE = "Check the chromium checkout." + + def Run(self): + self["chrome_path"] = self._options.chromium + + +class SwitchChromium(Step): + MESSAGE = "Switch to Chromium checkout." + REQUIRES = "chrome_path" + + def RunStep(self): + self["v8_path"] = os.getcwd() + os.chdir(self["chrome_path"]) + # Check for a clean workdir. + if not self.GitIsWorkdirClean(): # pragma: no cover + self.Die("Workspace is not clean. Please commit or undo your changes.") + # Assert that the DEPS file is there. + if not os.path.exists(self.Config(DEPS_FILE)): # pragma: no cover + self.Die("DEPS file not present.") + + +class UpdateChromiumCheckout(Step): + MESSAGE = "Update the checkout and create a new branch." + REQUIRES = "chrome_path" + + def RunStep(self): + os.chdir(self["chrome_path"]) + self.GitCheckout("master") + self.GitPull() + self.GitCreateBranch(self.Config(BRANCHNAME)) + + +class RetrieveChromiumV8Releases(Step): + MESSAGE = "Retrieve V8 releases from Chromium DEPS." + REQUIRES = "chrome_path" + + def RunStep(self): + os.chdir(self["chrome_path"]) + + trunk_releases = filter(lambda r: r["branch"] == "trunk", self["releases"]) + if not trunk_releases: # pragma: no cover + print "No trunk releases detected. Skipping chromium history." + return True + + oldest_v8_rev = int(trunk_releases[-1]["revision"]) + + cr_releases = [] + try: + for git_hash in self.GitLog(format="%H", grep="V8").splitlines(): + if self._config[DEPS_FILE] not in self.GitChangedFiles(git_hash): + continue + if not self.GitCheckoutFileSafe(self._config[DEPS_FILE], git_hash): + break # pragma: no cover + deps = FileToText(self.Config(DEPS_FILE)) + match = DEPS_RE.search(deps) + if match: + svn_rev = self.GitSVNFindSVNRev(git_hash) + v8_rev = match.group(1) + cr_releases.append([svn_rev, v8_rev]) + + # Stop after reaching beyond the last v8 revision we want to update. + # We need a small buffer for possible revert/reland frenzies. + # TODO(machenbach): Subtraction is not git friendly. + if int(v8_rev) < oldest_v8_rev - 100: + break # pragma: no cover + + # Allow Ctrl-C interrupt. + except (KeyboardInterrupt, SystemExit): # pragma: no cover + pass + + # Clean up. + self.GitCheckoutFileSafe(self._config[DEPS_FILE], "HEAD") + + # Add the chromium ranges to the v8 trunk releases. + all_ranges = BuildRevisionRanges(cr_releases) + trunk_dict = dict((r["revision"], r) for r in trunk_releases) + for revision, ranges in all_ranges.iteritems(): + trunk_dict.get(revision, {})["chromium_revision"] = ranges + + +# TODO(machenbach): Unify common code with method above. +class RietrieveChromiumBranches(Step): + MESSAGE = "Retrieve Chromium branch information." + REQUIRES = "chrome_path" + + def RunStep(self): + os.chdir(self["chrome_path"]) + + trunk_releases = filter(lambda r: r["branch"] == "trunk", self["releases"]) + if not trunk_releases: # pragma: no cover + print "No trunk releases detected. Skipping chromium history." + return True + + oldest_v8_rev = int(trunk_releases[-1]["revision"]) + + # Filter out irrelevant branches. + branches = filter(lambda r: re.match(r"branch-heads/\d+", r), + self.GitRemotes()) + + # Transform into pure branch numbers. + branches = map(lambda r: int(re.match(r"branch-heads/(\d+)", r).group(1)), + branches) + + branches = sorted(branches, reverse=True) + + cr_branches = [] + try: + for branch in branches: + if not self.GitCheckoutFileSafe(self._config[DEPS_FILE], + "branch-heads/%d" % branch): + break # pragma: no cover + deps = FileToText(self.Config(DEPS_FILE)) + match = DEPS_RE.search(deps) + if match: + v8_rev = match.group(1) + cr_branches.append([str(branch), v8_rev]) + + # Stop after reaching beyond the last v8 revision we want to update. + # We need a small buffer for possible revert/reland frenzies. + # TODO(machenbach): Subtraction is not git friendly. + if int(v8_rev) < oldest_v8_rev - 100: + break # pragma: no cover + + # Allow Ctrl-C interrupt. + except (KeyboardInterrupt, SystemExit): # pragma: no cover + pass + + # Clean up. + self.GitCheckoutFileSafe(self._config[DEPS_FILE], "HEAD") + + # Add the chromium branches to the v8 trunk releases. + all_ranges = BuildRevisionRanges(cr_branches) + trunk_dict = dict((r["revision"], r) for r in trunk_releases) + for revision, ranges in all_ranges.iteritems(): + trunk_dict.get(revision, {})["chromium_branch"] = ranges + + +class SwitchV8(Step): + MESSAGE = "Returning to V8 checkout." + REQUIRES = "chrome_path" + + def RunStep(self): + self.GitCheckout("master") + self.GitDeleteBranch(self.Config(BRANCHNAME)) + os.chdir(self["v8_path"]) + + +class CleanUp(Step): + MESSAGE = "Clean up." + + def RunStep(self): + self.CommonCleanup() + + +class WriteOutput(Step): + MESSAGE = "Print output." + + def Run(self): + if self._options.csv: + with open(self._options.csv, "w") as f: + writer = csv.DictWriter(f, + ["version", "branch", "revision", + "chromium_revision", "patches_merged"], + restval="", + extrasaction="ignore") + for release in self["releases"]: + writer.writerow(release) + if self._options.json: + with open(self._options.json, "w") as f: + f.write(json.dumps(self["releases"])) + if not self._options.csv and not self._options.json: + print self["releases"] # pragma: no cover + + +class Releases(ScriptsBase): + def _PrepareOptions(self, parser): + parser.add_argument("-b", "--branch", default="recent", + help=("The branch to analyze. If 'all' is specified, " + "analyze all branches. If 'recent' (default) " + "is specified, track beta, stable and trunk.")) + parser.add_argument("-c", "--chromium", + help=("The path to your Chromium src/ " + "directory to automate the V8 roll.")) + parser.add_argument("--csv", help="Path to a CSV file for export.") + parser.add_argument("-m", "--max-releases", type=int, default=0, + help="The maximum number of releases to track.") + parser.add_argument("--json", help="Path to a JSON file for export.") + + def _ProcessOptions(self, options): # pragma: no cover + return True + + def _Steps(self): + return [ + Preparation, + RetrieveV8Releases, + CheckChromium, + SwitchChromium, + UpdateChromiumCheckout, + RetrieveChromiumV8Releases, + RietrieveChromiumBranches, + SwitchV8, + CleanUp, + WriteOutput, + ] + + +if __name__ == "__main__": # pragma: no cover + sys.exit(Releases(CONFIG).Run()) |