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316 lines
12 KiB
316 lines
12 KiB
#!/usr/bin/env python
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# Copyright 2014 the V8 project authors. All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import argparse
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from collections import OrderedDict
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import sys
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from common_includes import *
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def IsSvnNumber(rev):
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return rev.isdigit() and len(rev) < 8
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class Preparation(Step):
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MESSAGE = "Preparation."
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def RunStep(self):
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if os.path.exists(self.Config("ALREADY_MERGING_SENTINEL_FILE")):
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if self._options.force:
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os.remove(self.Config("ALREADY_MERGING_SENTINEL_FILE"))
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elif self._options.step == 0: # pragma: no cover
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self.Die("A merge is already in progress")
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open(self.Config("ALREADY_MERGING_SENTINEL_FILE"), "a").close()
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self.InitialEnvironmentChecks(self.default_cwd)
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if self._options.revert_bleeding_edge:
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# FIXME(machenbach): Make revert bleeding_edge obsolete?
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self["merge_to_branch"] = "bleeding_edge"
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elif self._options.branch:
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self["merge_to_branch"] = self._options.branch
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else: # pragma: no cover
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self.Die("Please specify a branch to merge to")
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self.CommonPrepare()
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self.PrepareBranch()
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class CreateBranch(Step):
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MESSAGE = "Create a fresh branch for the patch."
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def RunStep(self):
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self.GitCreateBranch(self.Config("BRANCHNAME"),
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self.vc.RemoteBranch(self["merge_to_branch"]))
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class SearchArchitecturePorts(Step):
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MESSAGE = "Search for corresponding architecture ports."
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def RunStep(self):
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self["full_revision_list"] = list(OrderedDict.fromkeys(
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self._options.revisions))
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port_revision_list = []
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for revision in self["full_revision_list"]:
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# Search for commits which matches the "Port XXX" pattern.
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git_hashes = self.GitLog(reverse=True, format="%H",
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grep="Port %s" % revision,
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branch=self.vc.RemoteMasterBranch())
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for git_hash in git_hashes.splitlines():
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revision_title = self.GitLog(n=1, format="%s", git_hash=git_hash)
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# Is this revision included in the original revision list?
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if git_hash in self["full_revision_list"]:
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print("Found port of %s -> %s (already included): %s"
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% (revision, git_hash, revision_title))
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else:
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print("Found port of %s -> %s: %s"
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% (revision, git_hash, revision_title))
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port_revision_list.append(git_hash)
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# Do we find any port?
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if len(port_revision_list) > 0:
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if self.Confirm("Automatically add corresponding ports (%s)?"
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% ", ".join(port_revision_list)):
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#: 'y': Add ports to revision list.
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self["full_revision_list"].extend(port_revision_list)
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class CreateCommitMessage(Step):
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MESSAGE = "Create commit message."
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def RunStep(self):
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# Stringify: [123, 234] -> "r123, r234"
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self["revision_list"] = ", ".join(map(lambda s: "r%s" % s,
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self["full_revision_list"]))
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if not self["revision_list"]: # pragma: no cover
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self.Die("Revision list is empty.")
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if self._options.revert and not self._options.revert_bleeding_edge:
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action_text = "Rollback of %s"
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else:
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action_text = "Merged %s"
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# The commit message title is added below after the version is specified.
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msg_pieces = [
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"\n".join(action_text % s for s in self["full_revision_list"]),
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]
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msg_pieces.append("\n\n")
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for commit_hash in self["full_revision_list"]:
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patch_merge_desc = self.GitLog(n=1, format="%s", git_hash=commit_hash)
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msg_pieces.append("%s\n\n" % patch_merge_desc)
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bugs = []
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for commit_hash in self["full_revision_list"]:
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msg = self.GitLog(n=1, git_hash=commit_hash)
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for bug in re.findall(r"^[ \t]*BUG[ \t]*=[ \t]*(.*?)[ \t]*$", msg, re.M):
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bugs.extend(s.strip() for s in bug.split(","))
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bug_aggregate = ",".join(sorted(filter(lambda s: s and s != "none", bugs)))
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if bug_aggregate:
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msg_pieces.append("BUG=%s\nLOG=N\n" % bug_aggregate)
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self["new_commit_msg"] = "".join(msg_pieces)
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class ApplyPatches(Step):
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MESSAGE = "Apply patches for selected revisions."
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def RunStep(self):
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for commit_hash in self["full_revision_list"]:
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print("Applying patch for %s to %s..."
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% (commit_hash, self["merge_to_branch"]))
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patch = self.GitGetPatch(commit_hash)
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TextToFile(patch, self.Config("TEMPORARY_PATCH_FILE"))
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self.ApplyPatch(self.Config("TEMPORARY_PATCH_FILE"), self._options.revert)
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if self._options.patch:
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self.ApplyPatch(self._options.patch, self._options.revert)
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class PrepareVersion(Step):
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MESSAGE = "Prepare version file."
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def RunStep(self):
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if self._options.revert_bleeding_edge:
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return
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# This is used to calculate the patch level increment.
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self.ReadAndPersistVersion()
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class IncrementVersion(Step):
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MESSAGE = "Increment version number."
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def RunStep(self):
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if self._options.revert_bleeding_edge:
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return
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new_patch = str(int(self["patch"]) + 1)
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if self.Confirm("Automatically increment PATCH_LEVEL? (Saying 'n' will "
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"fire up your EDITOR on %s so you can make arbitrary "
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"changes. When you're done, save the file and exit your "
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"EDITOR.)" % VERSION_FILE):
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text = FileToText(os.path.join(self.default_cwd, VERSION_FILE))
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text = MSub(r"(?<=#define PATCH_LEVEL)(?P<space>\s+)\d*$",
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r"\g<space>%s" % new_patch,
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text)
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TextToFile(text, os.path.join(self.default_cwd, VERSION_FILE))
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else:
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self.Editor(os.path.join(self.default_cwd, VERSION_FILE))
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self.ReadAndPersistVersion("new_")
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self["version"] = "%s.%s.%s.%s" % (self["new_major"],
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self["new_minor"],
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self["new_build"],
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self["new_patch"])
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class CommitLocal(Step):
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MESSAGE = "Commit to local branch."
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def RunStep(self):
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# Add a commit message title.
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if self._options.revert and self._options.revert_bleeding_edge:
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# TODO(machenbach): Find a better convention if multiple patches are
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# reverted in one CL.
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self["commit_title"] = "Revert on master"
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else:
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self["commit_title"] = "Version %s (cherry-pick)" % self["version"]
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self["new_commit_msg"] = "%s\n\n%s" % (self["commit_title"],
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self["new_commit_msg"])
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TextToFile(self["new_commit_msg"], self.Config("COMMITMSG_FILE"))
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self.GitCommit(file_name=self.Config("COMMITMSG_FILE"))
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class CommitRepository(Step):
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MESSAGE = "Commit to the repository."
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def RunStep(self):
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self.GitCheckout(self.Config("BRANCHNAME"))
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self.WaitForLGTM()
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self.GitPresubmit()
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self.vc.CLLand()
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class TagRevision(Step):
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MESSAGE = "Create the tag."
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def RunStep(self):
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if self._options.revert_bleeding_edge:
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return
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print "Creating tag %s" % self["version"]
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self.vc.Tag(self["version"],
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self.vc.RemoteBranch(self["merge_to_branch"]),
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self["commit_title"])
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class CleanUp(Step):
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MESSAGE = "Cleanup."
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def RunStep(self):
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self.CommonCleanup()
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if not self._options.revert_bleeding_edge:
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print "*** SUMMARY ***"
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print "version: %s" % self["version"]
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print "branch: %s" % self["merge_to_branch"]
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if self["revision_list"]:
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print "patches: %s" % self["revision_list"]
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class MergeToBranch(ScriptsBase):
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def _Description(self):
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return ("Performs the necessary steps to merge revisions from "
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"bleeding_edge to other branches, including trunk.")
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def _PrepareOptions(self, parser):
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group = parser.add_mutually_exclusive_group(required=True)
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group.add_argument("--branch", help="The branch to merge to.")
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group.add_argument("-R", "--revert-bleeding-edge",
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help="Revert specified patches from bleeding edge.",
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default=False, action="store_true")
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parser.add_argument("revisions", nargs="*",
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help="The revisions to merge.")
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parser.add_argument("-f", "--force",
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help="Delete sentinel file.",
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default=False, action="store_true")
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parser.add_argument("-m", "--message",
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help="A commit message for the patch.")
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parser.add_argument("--revert",
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help="Revert specified patches.",
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default=False, action="store_true")
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parser.add_argument("-p", "--patch",
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help="A patch file to apply as part of the merge.")
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def _ProcessOptions(self, options):
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# TODO(machenbach): Add a test that covers revert from bleeding_edge
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if len(options.revisions) < 1:
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if not options.patch:
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print "Either a patch file or revision numbers must be specified"
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return False
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if not options.message:
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print "You must specify a merge comment if no patches are specified"
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return False
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options.bypass_upload_hooks = True
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# CC ulan to make sure that fixes are merged to Google3.
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options.cc = "ulan@chromium.org"
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# Make sure to use git hashes in the new workflows.
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for revision in options.revisions:
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if (IsSvnNumber(revision) or
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(revision[0:1] == "r" and IsSvnNumber(revision[1:]))):
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print "Please provide full git hashes of the patches to merge."
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print "Got: %s" % revision
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return False
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return True
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def _Config(self):
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return {
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"BRANCHNAME": "prepare-merge",
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"PERSISTFILE_BASENAME": "/tmp/v8-merge-to-branch-tempfile",
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"ALREADY_MERGING_SENTINEL_FILE":
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"/tmp/v8-merge-to-branch-tempfile-already-merging",
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"TEMPORARY_PATCH_FILE": "/tmp/v8-prepare-merge-tempfile-temporary-patch",
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"COMMITMSG_FILE": "/tmp/v8-prepare-merge-tempfile-commitmsg",
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}
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def _Steps(self):
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return [
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Preparation,
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CreateBranch,
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SearchArchitecturePorts,
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CreateCommitMessage,
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ApplyPatches,
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PrepareVersion,
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IncrementVersion,
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CommitLocal,
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UploadStep,
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CommitRepository,
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TagRevision,
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CleanUp,
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]
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if __name__ == "__main__": # pragma: no cover
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sys.exit(MergeToBranch().Run())
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