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272 lines
9.8 KiB
272 lines
9.8 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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self["merge_to_branch"] = self._options.branch
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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="^[Pp]ort %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 _create_commit_description(self, commit_hash):
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patch_merge_desc = self.GitLog(n=1, format="%s", git_hash=commit_hash)
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description = "Merged: " + patch_merge_desc + "\n"
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description += "Revision: " + commit_hash + "\n\n"
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return description
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def RunStep(self):
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# Stringify: ["abcde", "12345"] -> "abcde, 12345"
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self["revision_list"] = ", ".join(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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msg_pieces = []
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if len(self["full_revision_list"]) > 1:
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self["commit_title"] = "Merged: Squashed multiple commits."
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for commit_hash in self["full_revision_list"]:
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msg_pieces.append(self._create_commit_description(commit_hash))
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else:
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commit_hash = self["full_revision_list"][0]
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full_description = self._create_commit_description(commit_hash).split("\n")
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#Truncate title because of code review tool
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title = full_description[0]
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if len(title) > 100:
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title = title[:96] + " ..."
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self["commit_title"] = title
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msg_pieces.append(full_description[1] + "\n\n")
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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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msg_pieces.append("NOTRY=true\nNOPRESUBMIT=true\nNOTREECHECKS=true\n")
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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"))
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if self._options.patch:
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self.ApplyPatch(self._options.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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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 AddInformationalComment(Step):
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MESSAGE = 'Show additional information.'
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def RunStep(self):
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message = ("NOTE: This script will no longer automatically "
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"update include/v8-version.h "
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"and create a tag. This is done automatically by the autotag bot. "
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"Please call the merge_to_branch.py with --help for more information.")
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self.GitCLAddComment(message)
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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 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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print "*** SUMMARY ***"
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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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"master to release branches like 4.5. This script does not "
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"version the commit. See http://goo.gl/9ke2Vw for more "
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"information.")
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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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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("-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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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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if len(options.branch.split('.')) > 2:
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print ("This script does not support merging to roll branches. "
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"Please use tools/release/roll_merge.py for this use case.")
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return False
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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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CommitLocal,
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UploadStep,
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AddInformationalComment,
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CommitRepository,
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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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