2014-04-09 14:30:02 +00:00
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#!/usr/bin/env python
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# Copyright 2014 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This script retrieves the history of all V8 branches and trunk revisions and
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# their corresponding Chromium revisions.
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2014-04-25 11:33:19 +00:00
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# Requires a chromium checkout with branch heads:
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# gclient sync --with_branch_heads
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# gclient fetch
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2014-04-09 14:30:02 +00:00
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import argparse
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import csv
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import itertools
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import json
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import os
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import re
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import sys
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from common_includes import *
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DEPS_FILE = "DEPS_FILE"
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CHROMIUM = "CHROMIUM"
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CONFIG = {
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BRANCHNAME: "retrieve-v8-releases",
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PERSISTFILE_BASENAME: "/tmp/v8-releases-tempfile",
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DOT_GIT_LOCATION: ".git",
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VERSION_FILE: "src/version.cc",
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DEPS_FILE: "DEPS",
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}
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# Expression for retrieving the bleeding edge revision from a commit message.
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PUSH_MESSAGE_RE = re.compile(r".* \(based on bleeding_edge revision r(\d+)\)$")
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# Expression for retrieving the merged patches from a merge commit message
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# (old and new format).
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MERGE_MESSAGE_RE = re.compile(r"^.*[M|m]erged (.+)(\)| into).*$", re.M)
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# Expression for retrieving reverted patches from a commit message (old and
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# new format).
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ROLLBACK_MESSAGE_RE = re.compile(r"^.*[R|r]ollback of (.+)(\)| in).*$", re.M)
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2014-04-14 10:32:00 +00:00
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# Expression for retrieving the code review link.
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REVIEW_LINK_RE = re.compile(r"^Review URL: (.+)$", re.M)
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2014-04-09 14:30:02 +00:00
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# Expression with three versions (historical) for extracting the v8 revision
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# from the chromium DEPS file.
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DEPS_RE = re.compile(r'^\s*(?:"v8_revision": "'
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'|\(Var\("googlecode_url"\) % "v8"\) \+ "\/trunk@'
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'|"http\:\/\/v8\.googlecode\.com\/svn\/trunk@)'
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'([0-9]+)".*$', re.M)
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2014-07-28 13:49:07 +00:00
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# Expression to pick tag and revision for bleeding edge tags. To be used with
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# output of 'svn log'.
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BLEEDING_EDGE_TAGS_RE = re.compile(
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r"A \/tags\/([^\s]+) \(from \/branches\/bleeding_edge\:(\d+)\)")
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2014-04-09 14:30:02 +00:00
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def SortBranches(branches):
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"""Sort branches with version number names."""
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return sorted(branches, key=SortingKey, reverse=True)
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def FilterDuplicatesAndReverse(cr_releases):
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"""Returns the chromium releases in reverse order filtered by v8 revision
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duplicates.
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cr_releases is a list of [cr_rev, v8_rev] reverse-sorted by cr_rev.
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"""
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last = ""
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result = []
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for release in reversed(cr_releases):
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if last == release[1]:
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continue
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last = release[1]
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result.append(release)
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return result
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def BuildRevisionRanges(cr_releases):
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"""Returns a mapping of v8 revision -> chromium ranges.
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The ranges are comma-separated, each range has the form R1:R2. The newest
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entry is the only one of the form R1, as there is no end range.
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cr_releases is a list of [cr_rev, v8_rev] reverse-sorted by cr_rev.
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2014-04-25 11:33:19 +00:00
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cr_rev either refers to a chromium svn revision or a chromium branch number.
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2014-04-09 14:30:02 +00:00
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"""
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range_lists = {}
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cr_releases = FilterDuplicatesAndReverse(cr_releases)
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# Visit pairs of cr releases from oldest to newest.
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for cr_from, cr_to in itertools.izip(
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cr_releases, itertools.islice(cr_releases, 1, None)):
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# Assume the chromium revisions are all different.
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assert cr_from[0] != cr_to[0]
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# TODO(machenbach): Subtraction is not git friendly.
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ran = "%s:%d" % (cr_from[0], int(cr_to[0]) - 1)
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# Collect the ranges in lists per revision.
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range_lists.setdefault(cr_from[1], []).append(ran)
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# Add the newest revision.
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if cr_releases:
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range_lists.setdefault(cr_releases[-1][1], []).append(cr_releases[-1][0])
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# Stringify and comma-separate the range lists.
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2014-04-11 07:40:48 +00:00
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return dict((rev, ", ".join(ran)) for rev, ran in range_lists.iteritems())
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2014-04-09 14:30:02 +00:00
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def MatchSafe(match):
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if match:
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return match.group(1)
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else:
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return ""
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class Preparation(Step):
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MESSAGE = "Preparation."
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def RunStep(self):
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self.CommonPrepare()
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self.PrepareBranch()
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class RetrieveV8Releases(Step):
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MESSAGE = "Retrieve all V8 releases."
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def ExceedsMax(self, releases):
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return (self._options.max_releases > 0
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and len(releases) > self._options.max_releases)
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def GetBleedingEdgeFromPush(self, title):
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return MatchSafe(PUSH_MESSAGE_RE.match(title))
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2014-04-14 10:32:00 +00:00
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def GetMergedPatches(self, body):
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2014-04-09 14:30:02 +00:00
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patches = MatchSafe(MERGE_MESSAGE_RE.search(body))
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if not patches:
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patches = MatchSafe(ROLLBACK_MESSAGE_RE.search(body))
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if patches:
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# Indicate reverted patches with a "-".
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patches = "-%s" % patches
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return patches
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2014-07-28 13:49:07 +00:00
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def GetReleaseDict(
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self, git_hash, bleeding_edge_rev, branch, version, patches, cl_body):
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2014-04-14 10:32:00 +00:00
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revision = self.GitSVNFindSVNRev(git_hash)
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2014-04-09 14:30:02 +00:00
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return {
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# The SVN revision on the branch.
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2014-04-14 10:32:00 +00:00
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"revision": revision,
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2014-04-09 14:30:02 +00:00
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# The SVN revision on bleeding edge (only for newer trunk pushes).
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"bleeding_edge": bleeding_edge_rev,
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# The branch name.
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"branch": branch,
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# The version for displaying in the form 3.26.3 or 3.26.3.12.
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"version": version,
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2014-04-15 12:00:53 +00:00
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# The date of the commit.
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"date": self.GitLog(n=1, format="%ci", git_hash=git_hash),
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2014-04-09 14:30:02 +00:00
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# Merged patches if available in the form 'r1234, r2345'.
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"patches_merged": patches,
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2014-04-11 07:40:48 +00:00
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# Default for easier output formatting.
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"chromium_revision": "",
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2014-04-25 11:33:19 +00:00
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# Default for easier output formatting.
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"chromium_branch": "",
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2014-04-14 10:32:00 +00:00
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# Link to the CL on code review. Trunk pushes are not uploaded, so this
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# field will be populated below with the recent roll CL link.
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2014-07-28 13:49:07 +00:00
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"review_link": MatchSafe(REVIEW_LINK_RE.search(cl_body)),
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2014-04-14 10:32:00 +00:00
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# Link to the commit message on google code.
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"revision_link": ("https://code.google.com/p/v8/source/detail?r=%s"
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% revision),
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2014-07-28 13:49:07 +00:00
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}
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def GetRelease(self, git_hash, branch):
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self.ReadAndPersistVersion()
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base_version = [self["major"], self["minor"], self["build"]]
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version = ".".join(base_version)
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body = self.GitLog(n=1, format="%B", git_hash=git_hash)
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patches = ""
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if self["patch"] != "0":
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version += ".%s" % self["patch"]
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patches = self.GetMergedPatches(body)
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title = self.GitLog(n=1, format="%s", git_hash=git_hash)
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return self.GetReleaseDict(
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git_hash, self.GetBleedingEdgeFromPush(title), branch, version,
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patches, body), self["patch"]
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def GetReleasesFromBleedingEdge(self):
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tag_text = self.SVN("log https://v8.googlecode.com/svn/tags -v --limit 20")
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releases = []
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for (tag, revision) in re.findall(BLEEDING_EDGE_TAGS_RE, tag_text):
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git_hash = self.GitSVNFindGitHash(revision)
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# Add bleeding edge release. It does not contain patches or a code
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# review link, as tags are not uploaded.
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releases.append(self.GetReleaseDict(
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git_hash, revision, "bleeding_edge", tag, "", ""))
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return releases
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2014-04-09 14:30:02 +00:00
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def GetReleasesFromBranch(self, branch):
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self.GitReset("svn/%s" % branch)
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2014-07-28 13:49:07 +00:00
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if branch == 'bleeding_edge':
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return self.GetReleasesFromBleedingEdge()
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2014-04-09 14:30:02 +00:00
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releases = []
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try:
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for git_hash in self.GitLog(format="%H").splitlines():
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if self._config[VERSION_FILE] not in self.GitChangedFiles(git_hash):
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continue
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if self.ExceedsMax(releases):
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break # pragma: no cover
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if not self.GitCheckoutFileSafe(self._config[VERSION_FILE], git_hash):
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break # pragma: no cover
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release, patch_level = self.GetRelease(git_hash, branch)
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releases.append(release)
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# Follow branches only until their creation point.
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# TODO(machenbach): This omits patches if the version file wasn't
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# manipulated correctly. Find a better way to detect the point where
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# the parent of the branch head leads to the trunk branch.
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if branch != "trunk" and patch_level == "0":
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break
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# Allow Ctrl-C interrupt.
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except (KeyboardInterrupt, SystemExit): # pragma: no cover
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pass
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# Clean up checked-out version file.
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self.GitCheckoutFileSafe(self._config[VERSION_FILE], "HEAD")
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return releases
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def RunStep(self):
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self.GitCreateBranch(self._config[BRANCHNAME])
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# Get relevant remote branches, e.g. "svn/3.25".
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branches = filter(lambda s: re.match(r"^svn/\d+\.\d+$", s),
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self.GitRemotes())
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# Remove 'svn/' prefix.
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branches = map(lambda s: s[4:], branches)
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releases = []
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if self._options.branch == 'recent':
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# Get only recent development on trunk, beta and stable.
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if self._options.max_releases == 0: # pragma: no cover
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self._options.max_releases = 10
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beta, stable = SortBranches(branches)[0:2]
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releases += self.GetReleasesFromBranch(stable)
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releases += self.GetReleasesFromBranch(beta)
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releases += self.GetReleasesFromBranch("trunk")
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releases += self.GetReleasesFromBranch("bleeding_edge")
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elif self._options.branch == 'all': # pragma: no cover
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# Retrieve the full release history.
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for branch in branches:
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releases += self.GetReleasesFromBranch(branch)
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releases += self.GetReleasesFromBranch("trunk")
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2014-07-28 13:49:07 +00:00
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releases += self.GetReleasesFromBranch("bleeding_edge")
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else: # pragma: no cover
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# Retrieve history for a specified branch.
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2014-07-28 13:49:07 +00:00
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assert self._options.branch in branches + ["trunk", "bleeding_edge"]
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2014-04-09 14:30:02 +00:00
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releases += self.GetReleasesFromBranch(self._options.branch)
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self["releases"] = sorted(releases,
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key=lambda r: SortingKey(r["version"]),
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reverse=True)
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# TODO(machenbach): Parts of the Chromium setup are c/p from the chromium_roll
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# script -> unify.
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class CheckChromium(Step):
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MESSAGE = "Check the chromium checkout."
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def Run(self):
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self["chrome_path"] = self._options.chromium
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class SwitchChromium(Step):
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MESSAGE = "Switch to Chromium checkout."
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REQUIRES = "chrome_path"
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def RunStep(self):
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self["v8_path"] = os.getcwd()
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os.chdir(self["chrome_path"])
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# Check for a clean workdir.
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if not self.GitIsWorkdirClean(): # pragma: no cover
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self.Die("Workspace is not clean. Please commit or undo your changes.")
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# Assert that the DEPS file is there.
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if not os.path.exists(self.Config(DEPS_FILE)): # pragma: no cover
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self.Die("DEPS file not present.")
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class UpdateChromiumCheckout(Step):
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MESSAGE = "Update the checkout and create a new branch."
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REQUIRES = "chrome_path"
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def RunStep(self):
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os.chdir(self["chrome_path"])
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self.GitCheckout("master")
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self.GitPull()
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self.GitCreateBranch(self.Config(BRANCHNAME))
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class RetrieveChromiumV8Releases(Step):
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MESSAGE = "Retrieve V8 releases from Chromium DEPS."
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REQUIRES = "chrome_path"
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def RunStep(self):
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os.chdir(self["chrome_path"])
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trunk_releases = filter(lambda r: r["branch"] == "trunk", self["releases"])
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if not trunk_releases: # pragma: no cover
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print "No trunk releases detected. Skipping chromium history."
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return True
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oldest_v8_rev = int(trunk_releases[-1]["revision"])
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cr_releases = []
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try:
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for git_hash in self.GitLog(format="%H", grep="V8").splitlines():
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if self._config[DEPS_FILE] not in self.GitChangedFiles(git_hash):
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continue
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if not self.GitCheckoutFileSafe(self._config[DEPS_FILE], git_hash):
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break # pragma: no cover
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deps = FileToText(self.Config(DEPS_FILE))
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match = DEPS_RE.search(deps)
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if match:
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svn_rev = self.GitSVNFindSVNRev(git_hash)
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v8_rev = match.group(1)
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cr_releases.append([svn_rev, v8_rev])
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# Stop after reaching beyond the last v8 revision we want to update.
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# We need a small buffer for possible revert/reland frenzies.
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|
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# TODO(machenbach): Subtraction is not git friendly.
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|
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if int(v8_rev) < oldest_v8_rev - 100:
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break # pragma: no cover
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# Allow Ctrl-C interrupt.
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|
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except (KeyboardInterrupt, SystemExit): # pragma: no cover
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|
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pass
|
|
|
|
|
|
|
|
# Clean up.
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|
|
|
self.GitCheckoutFileSafe(self._config[DEPS_FILE], "HEAD")
|
|
|
|
|
|
|
|
# Add the chromium ranges to the v8 trunk releases.
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|
|
|
all_ranges = BuildRevisionRanges(cr_releases)
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|
|
trunk_dict = dict((r["revision"], r) for r in trunk_releases)
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|
|
for revision, ranges in all_ranges.iteritems():
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|
|
|
trunk_dict.get(revision, {})["chromium_revision"] = ranges
|
|
|
|
|
2014-04-25 11:33:19 +00:00
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|
|
|
|
|
# TODO(machenbach): Unify common code with method above.
|
|
|
|
class RietrieveChromiumBranches(Step):
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|
|
MESSAGE = "Retrieve Chromium branch information."
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|
|
|
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
|
|
|
|
|
|
|
|
|
2014-04-09 14:30:02 +00:00
|
|
|
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,
|
2014-04-25 11:33:19 +00:00
|
|
|
RietrieveChromiumBranches,
|
2014-04-09 14:30:02 +00:00
|
|
|
SwitchV8,
|
|
|
|
CleanUp,
|
|
|
|
WriteOutput,
|
|
|
|
]
|
|
|
|
|
|
|
|
|
|
|
|
if __name__ == "__main__": # pragma: no cover
|
|
|
|
sys.exit(Releases(CONFIG).Run())
|