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506 lines
18 KiB
506 lines
18 KiB
#!/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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# 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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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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CONFIG = {
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"BRANCHNAME": "retrieve-v8-releases",
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"PERSISTFILE_BASENAME": "/tmp/v8-releases-tempfile",
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}
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# Expression for retrieving the bleeding edge revision from a commit message.
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PUSH_MSG_SVN_RE = re.compile(r".* \(based on bleeding_edge revision r(\d+)\)$")
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PUSH_MSG_GIT_RE = re.compile(r".* \(based on ([a-fA-F0-9]+)\)$")
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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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CHERRY_PICK_TITLE_GIT_RE = re.compile(r"^.* \(cherry\-pick\)\.?$")
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# New git message for cherry-picked CLs. One message per line.
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MERGE_MESSAGE_GIT_RE = re.compile(r"^Merged ([a-fA-F0-9]+)\.?$")
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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).*$", re.M)
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# New git message for reverted CLs. One message per line.
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ROLLBACK_MESSAGE_GIT_RE = re.compile(r"^Rollback of ([a-fA-F0-9]+)\.?$")
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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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# 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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"""([^"']+)["'].*$""", re.M)
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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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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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cr_rev either refers to a chromium svn revision or a chromium branch number.
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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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return dict((rev, ", ".join(ran)) for rev, ran in range_lists.iteritems())
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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 GetBleedingEdgeGitFromPush(self, title):
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return MatchSafe(PUSH_MSG_GIT_RE.match(title))
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def GetMergedPatches(self, body):
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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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def GetMergedPatchesGit(self, body):
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patches = []
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for line in body.splitlines():
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patch = MatchSafe(MERGE_MESSAGE_GIT_RE.match(line))
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if patch:
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patches.append(patch)
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patch = MatchSafe(ROLLBACK_MESSAGE_GIT_RE.match(line))
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if patch:
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patches.append("-%s" % patch)
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return ", ".join(patches)
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def GetReleaseDict(
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self, git_hash, bleeding_edge_rev, bleeding_edge_git, branch, version,
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patches, cl_body):
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revision = self.GetCommitPositionNumber(git_hash)
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return {
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# The cr commit position number on the branch.
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"revision": revision,
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# The git revision on the branch.
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"revision_git": git_hash,
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# The cr commit position number on master.
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"bleeding_edge": bleeding_edge_rev,
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# The same for git.
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"bleeding_edge_git": bleeding_edge_git,
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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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# The date of the commit.
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"date": self.GitLog(n=1, format="%ci", git_hash=git_hash),
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# Merged patches if available in the form 'r1234, r2345'.
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"patches_merged": patches,
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# Default for easier output formatting.
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"chromium_revision": "",
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# Default for easier output formatting.
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"chromium_branch": "",
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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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"review_link": MatchSafe(REVIEW_LINK_RE.search(cl_body)),
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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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}
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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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if CHERRY_PICK_TITLE_GIT_RE.match(body.splitlines()[0]):
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patches = self.GetMergedPatchesGit(body)
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else:
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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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bleeding_edge_git = self.GetBleedingEdgeGitFromPush(title)
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bleeding_edge_position = ""
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if bleeding_edge_git:
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bleeding_edge_position = self.GetCommitPositionNumber(bleeding_edge_git)
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# TODO(machenbach): Add the commit position number.
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return self.GetReleaseDict(
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git_hash, bleeding_edge_position, bleeding_edge_git, branch, version,
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patches, body), self["patch"]
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def GetReleasesFromMaster(self):
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# TODO(machenbach): Implement this in git as soon as we tag again on
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# master.
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# tag_text = self.SVN("log https://v8.googlecode.com/svn/tags -v
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# --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.vc.SvnGit(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, git_hash, self.vc.MasterBranch(), tag, "", ""))
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return []
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def GetReleasesFromBranch(self, branch):
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self.GitReset(self.vc.RemoteBranch(branch))
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if branch == self.vc.MasterBranch():
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return self.GetReleasesFromMaster()
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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 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(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 != self.vc.CandidateBranch() 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(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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branches = self.vc.GetBranches()
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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(self.vc.CandidateBranch())
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releases += self.GetReleasesFromBranch(self.vc.MasterBranch())
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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(self.vc.CandidateBranch())
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releases += self.GetReleasesFromBranch(self.vc.MasterBranch())
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else: # pragma: no cover
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# Retrieve history for a specified branch.
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assert self._options.branch in (branches +
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[self.vc.CandidateBranch(), self.vc.MasterBranch()])
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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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class SwitchChromium(Step):
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MESSAGE = "Switch to Chromium checkout."
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def RunStep(self):
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cwd = self._options.chromium
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# Check for a clean workdir.
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if not self.GitIsWorkdirClean(cwd=cwd): # 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(os.path.join(cwd, "DEPS")): # 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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def RunStep(self):
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cwd = self._options.chromium
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self.GitCheckout("master", cwd=cwd)
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self.GitPull(cwd=cwd)
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self.GitCreateBranch(self.Config("BRANCHNAME"), cwd=cwd)
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def ConvertToCommitNumber(step, revision):
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# Simple check for git hashes.
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if revision.isdigit() and len(revision) < 8:
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return revision
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return step.GetCommitPositionNumber(
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revision, cwd=os.path.join(step._options.chromium, "v8"))
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class RetrieveChromiumV8Releases(Step):
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MESSAGE = "Retrieve V8 releases from Chromium DEPS."
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def RunStep(self):
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cwd = self._options.chromium
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releases = filter(
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lambda r: r["branch"] in [self.vc.CandidateBranch(),
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self.vc.MasterBranch()],
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self["releases"])
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if not releases: # pragma: no cover
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print "No releases detected. Skipping chromium history."
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return True
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# Update v8 checkout in chromium.
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self.GitFetchOrigin(cwd=os.path.join(cwd, "v8"))
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oldest_v8_rev = int(releases[-1]["revision"])
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cr_releases = []
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try:
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for git_hash in self.GitLog(
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format="%H", grep="V8", cwd=cwd).splitlines():
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if "DEPS" not in self.GitChangedFiles(git_hash, cwd=cwd):
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continue
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if not self.GitCheckoutFileSafe("DEPS", git_hash, cwd=cwd):
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break # pragma: no cover
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deps = FileToText(os.path.join(cwd, "DEPS"))
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match = DEPS_RE.search(deps)
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if match:
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cr_rev = self.GetCommitPositionNumber(git_hash, cwd=cwd)
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if cr_rev:
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v8_rev = ConvertToCommitNumber(self, match.group(1))
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cr_releases.append([cr_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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# TODO(machenbach): Subtraction is not git friendly.
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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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except (KeyboardInterrupt, SystemExit): # pragma: no cover
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pass
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# Clean up.
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self.GitCheckoutFileSafe("DEPS", "HEAD", cwd=cwd)
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# Add the chromium ranges to the v8 trunk and bleeding_edge releases.
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all_ranges = BuildRevisionRanges(cr_releases)
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releases_dict = dict((r["revision"], r) for r in releases)
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for revision, ranges in all_ranges.iteritems():
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releases_dict.get(revision, {})["chromium_revision"] = ranges
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# TODO(machenbach): Unify common code with method above.
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class RietrieveChromiumBranches(Step):
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MESSAGE = "Retrieve Chromium branch information."
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def RunStep(self):
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cwd = self._options.chromium
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trunk_releases = filter(lambda r: r["branch"] == self.vc.CandidateBranch(),
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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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# Filter out irrelevant branches.
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branches = filter(lambda r: re.match(r"branch-heads/\d+", r),
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self.GitRemotes(cwd=cwd))
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# Transform into pure branch numbers.
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branches = map(lambda r: int(re.match(r"branch-heads/(\d+)", r).group(1)),
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branches)
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branches = sorted(branches, reverse=True)
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cr_branches = []
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try:
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for branch in branches:
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if not self.GitCheckoutFileSafe("DEPS",
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"branch-heads/%d" % branch,
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cwd=cwd):
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break # pragma: no cover
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deps = FileToText(os.path.join(cwd, "DEPS"))
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match = DEPS_RE.search(deps)
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if match:
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v8_rev = ConvertToCommitNumber(self, match.group(1))
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cr_branches.append([str(branch), 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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# TODO(machenbach): Subtraction is not git friendly.
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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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except (KeyboardInterrupt, SystemExit): # pragma: no cover
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pass
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# Clean up.
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self.GitCheckoutFileSafe("DEPS", "HEAD", cwd=cwd)
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# Add the chromium branches to the v8 trunk releases.
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all_ranges = BuildRevisionRanges(cr_branches)
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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_branch"] = ranges
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class CleanUp(Step):
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MESSAGE = "Clean up."
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def RunStep(self):
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self.GitCheckout("master", cwd=self._options.chromium)
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self.GitDeleteBranch(self.Config("BRANCHNAME"), cwd=self._options.chromium)
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self.CommonCleanup()
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class WriteOutput(Step):
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MESSAGE = "Print output."
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def Run(self):
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if self._options.csv:
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with open(self._options.csv, "w") as f:
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writer = csv.DictWriter(f,
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["version", "branch", "revision",
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"chromium_revision", "patches_merged"],
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restval="",
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extrasaction="ignore")
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for release in self["releases"]:
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writer.writerow(release)
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if self._options.json:
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with open(self._options.json, "w") as f:
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f.write(json.dumps(self["releases"]))
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if not self._options.csv and not self._options.json:
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print self["releases"] # pragma: no cover
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class Releases(ScriptsBase):
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def _PrepareOptions(self, parser):
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parser.add_argument("-b", "--branch", default="recent",
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help=("The branch to analyze. If 'all' is specified, "
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"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 _Config(self):
|
|
return {
|
|
"BRANCHNAME": "retrieve-v8-releases",
|
|
"PERSISTFILE_BASENAME": "/tmp/v8-releases-tempfile",
|
|
}
|
|
|
|
def _Steps(self):
|
|
return [
|
|
Preparation,
|
|
RetrieveV8Releases,
|
|
SwitchChromium,
|
|
UpdateChromiumCheckout,
|
|
RetrieveChromiumV8Releases,
|
|
RietrieveChromiumBranches,
|
|
CleanUp,
|
|
WriteOutput,
|
|
]
|
|
|
|
|
|
if __name__ == "__main__": # pragma: no cover
|
|
sys.exit(Releases().Run())
|
|
|