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| 1 #!/usr/bin/env python | |
| 2 # Copyright 2014 the V8 project authors. All rights reserved. | |
| 3 # Redistribution and use in source and binary forms, with or without | |
| 4 # modification, are permitted provided that the following conditions are | |
| 5 # met: | |
| 6 # | |
| 7 # * Redistributions of source code must retain the above copyright | |
| 8 # notice, this list of conditions and the following disclaimer. | |
| 9 # * Redistributions in binary form must reproduce the above | |
| 10 # copyright notice, this list of conditions and the following | |
| 11 # disclaimer in the documentation and/or other materials provided | |
| 12 # with the distribution. | |
| 13 # * Neither the name of Google Inc. nor the names of its | |
| 14 # contributors may be used to endorse or promote products derived | |
| 15 # from this software without specific prior written permission. | |
| 16 # | |
| 17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 | |
| 29 from collections import OrderedDict | |
| 30 import optparse | |
| 31 import sys | |
| 32 | |
| 33 from common_includes import * | |
| 34 | |
| 35 ALREADY_MERGING_SENTINEL_FILE = "ALREADY_MERGING_SENTINEL_FILE" | |
| 36 COMMIT_HASHES_FILE = "COMMIT_HASHES_FILE" | |
| 37 TEMPORARY_PATCH_FILE = "TEMPORARY_PATCH_FILE" | |
| 38 | |
| 39 CONFIG = { | |
| 40 BRANCHNAME: "prepare-merge", | |
| 41 PERSISTFILE_BASENAME: "/tmp/v8-merge-to-branch-tempfile", | |
| 42 ALREADY_MERGING_SENTINEL_FILE: | |
| 43 "/tmp/v8-merge-to-branch-tempfile-already-merging", | |
| 44 TEMP_BRANCH: "prepare-merge-temporary-branch-created-by-script", | |
| 45 DOT_GIT_LOCATION: ".git", | |
| 46 VERSION_FILE: "src/version.cc", | |
| 47 TEMPORARY_PATCH_FILE: "/tmp/v8-prepare-merge-tempfile-temporary-patch", | |
| 48 COMMITMSG_FILE: "/tmp/v8-prepare-merge-tempfile-commitmsg", | |
| 49 COMMIT_HASHES_FILE: "/tmp/v8-merge-to-branch-tempfile-PATCH_COMMIT_HASHES", | |
| 50 } | |
| 51 | |
| 52 | |
| 53 class MergeToBranchOptions(CommonOptions): | |
| 54 def __init__(self, options, args): | |
| 55 super(MergeToBranchOptions, self).__init__(options, True) | |
| 56 self.requires_editor = True | |
| 57 self.wait_for_lgtm = True | |
| 58 self.delete_sentinel = options.f | |
| 59 self.message = getattr(options, "message", "") | |
| 60 self.revert = getattr(options, "r", False) | |
| 61 self.revert_bleeding_edge = getattr(options, "revert_bleeding_edge", False) | |
| 62 self.patch = getattr(options, "p", "") | |
| 63 self.args = args | |
| 64 | |
| 65 | |
| 66 class Preparation(Step): | |
| 67 MESSAGE = "Preparation." | |
| 68 | |
| 69 def RunStep(self): | |
| 70 if os.path.exists(self.Config(ALREADY_MERGING_SENTINEL_FILE)): | |
| 71 if self._options.delete_sentinel: | |
| 72 os.remove(self.Config(ALREADY_MERGING_SENTINEL_FILE)) | |
| 73 elif self._options.s == 0: | |
| 74 self.Die("A merge is already in progress") | |
| 75 open(self.Config(ALREADY_MERGING_SENTINEL_FILE), "a").close() | |
| 76 | |
| 77 self.InitialEnvironmentChecks() | |
| 78 if self._options.revert_bleeding_edge: | |
| 79 self["merge_to_branch"] = "bleeding_edge" | |
| 80 elif self._options.args[0]: | |
| 81 self["merge_to_branch"] = self._options.args[0] | |
| 82 self._options.args = self._options.args[1:] | |
| 83 else: | |
| 84 self.Die("Please specify a branch to merge to") | |
| 85 | |
| 86 self.CommonPrepare() | |
| 87 self.PrepareBranch() | |
| 88 | |
| 89 | |
| 90 class CreateBranch(Step): | |
| 91 MESSAGE = "Create a fresh branch for the patch." | |
| 92 | |
| 93 def RunStep(self): | |
| 94 self.GitCreateBranch(self.Config(BRANCHNAME), | |
| 95 "svn/%s" % self["merge_to_branch"]) | |
| 96 | |
| 97 | |
| 98 class SearchArchitecturePorts(Step): | |
| 99 MESSAGE = "Search for corresponding architecture ports." | |
| 100 | |
| 101 def RunStep(self): | |
| 102 self["full_revision_list"] = list(OrderedDict.fromkeys(self._options.args)) | |
| 103 port_revision_list = [] | |
| 104 for revision in self["full_revision_list"]: | |
| 105 # Search for commits which matches the "Port rXXX" pattern. | |
| 106 git_hashes = self.GitLog(reverse=True, format="%H", | |
| 107 grep="Port r%d" % int(revision), | |
| 108 branch="svn/bleeding_edge") | |
| 109 for git_hash in git_hashes.splitlines(): | |
| 110 svn_revision = self.GitSVNFindSVNRev(git_hash, "svn/bleeding_edge") | |
| 111 if not svn_revision: | |
| 112 self.Die("Cannot determine svn revision for %s" % git_hash) | |
| 113 revision_title = self.GitLog(n=1, format="%s", git_hash=git_hash) | |
| 114 | |
| 115 # Is this revision included in the original revision list? | |
| 116 if svn_revision in self["full_revision_list"]: | |
| 117 print("Found port of r%s -> r%s (already included): %s" | |
| 118 % (revision, svn_revision, revision_title)) | |
| 119 else: | |
| 120 print("Found port of r%s -> r%s: %s" | |
| 121 % (revision, svn_revision, revision_title)) | |
| 122 port_revision_list.append(svn_revision) | |
| 123 | |
| 124 # Do we find any port? | |
| 125 if len(port_revision_list) > 0: | |
| 126 if self.Confirm("Automatically add corresponding ports (%s)?" | |
| 127 % ", ".join(port_revision_list)): | |
| 128 #: 'y': Add ports to revision list. | |
| 129 self["full_revision_list"].extend(port_revision_list) | |
| 130 | |
| 131 | |
| 132 class FindGitRevisions(Step): | |
| 133 MESSAGE = "Find the git revisions associated with the patches." | |
| 134 | |
| 135 def RunStep(self): | |
| 136 self["patch_commit_hashes"] = [] | |
| 137 for revision in self["full_revision_list"]: | |
| 138 next_hash = self.GitSVNFindGitHash(revision, "svn/bleeding_edge") | |
| 139 if not next_hash: | |
| 140 self.Die("Cannot determine git hash for r%s" % revision) | |
| 141 self["patch_commit_hashes"].append(next_hash) | |
| 142 | |
| 143 # Stringify: [123, 234] -> "r123, r234" | |
| 144 self["revision_list"] = ", ".join(map(lambda s: "r%s" % s, | |
| 145 self["full_revision_list"])) | |
| 146 | |
| 147 if not self["revision_list"]: | |
| 148 self.Die("Revision list is empty.") | |
| 149 | |
| 150 if self._options.revert: | |
| 151 if not self._options.revert_bleeding_edge: | |
| 152 self["new_commit_msg"] = ("Rollback of %s in %s branch." | |
| 153 % (self["revision_list"], self["merge_to_branch"])) | |
| 154 else: | |
| 155 self["new_commit_msg"] = "Revert %s." % self["revision_list"] | |
| 156 else: | |
| 157 self["new_commit_msg"] = ("Merged %s into %s branch." | |
| 158 % (self["revision_list"], self["merge_to_branch"])) | |
| 159 self["new_commit_msg"] += "\n\n" | |
| 160 | |
| 161 for commit_hash in self["patch_commit_hashes"]: | |
| 162 patch_merge_desc = self.GitLog(n=1, format="%s", git_hash=commit_hash) | |
| 163 self["new_commit_msg"] += "%s\n\n" % patch_merge_desc | |
| 164 | |
| 165 bugs = [] | |
| 166 for commit_hash in self["patch_commit_hashes"]: | |
| 167 msg = self.GitLog(n=1, git_hash=commit_hash) | |
| 168 for bug in re.findall(r"^[ \t]*BUG[ \t]*=[ \t]*(.*?)[ \t]*$", msg, | |
| 169 re.M): | |
| 170 bugs.extend(map(lambda s: s.strip(), bug.split(","))) | |
| 171 bug_aggregate = ",".join(sorted(bugs)) | |
| 172 if bug_aggregate: | |
| 173 self["new_commit_msg"] += "BUG=%s\nLOG=N\n" % bug_aggregate | |
| 174 TextToFile(self["new_commit_msg"], self.Config(COMMITMSG_FILE)) | |
| 175 | |
| 176 | |
| 177 class ApplyPatches(Step): | |
| 178 MESSAGE = "Apply patches for selected revisions." | |
| 179 | |
| 180 def RunStep(self): | |
| 181 for commit_hash in self["patch_commit_hashes"]: | |
| 182 print("Applying patch for %s to %s..." | |
| 183 % (commit_hash, self["merge_to_branch"])) | |
| 184 patch = self.GitLog(n=1, patch=True, git_hash=commit_hash) | |
| 185 TextToFile(patch, self.Config(TEMPORARY_PATCH_FILE)) | |
| 186 self.ApplyPatch(self.Config(TEMPORARY_PATCH_FILE), self._options.revert) | |
| 187 if self._options.patch: | |
| 188 self.ApplyPatch(self._options.patch, self._options.revert) | |
| 189 | |
| 190 | |
| 191 class PrepareVersion(Step): | |
| 192 MESSAGE = "Prepare version file." | |
| 193 | |
| 194 def RunStep(self): | |
| 195 if self._options.revert_bleeding_edge: | |
| 196 return | |
| 197 # These version numbers are used again for creating the tag | |
| 198 self.ReadAndPersistVersion() | |
| 199 | |
| 200 | |
| 201 class IncrementVersion(Step): | |
| 202 MESSAGE = "Increment version number." | |
| 203 | |
| 204 def RunStep(self): | |
| 205 if self._options.revert_bleeding_edge: | |
| 206 return | |
| 207 new_patch = str(int(self["patch"]) + 1) | |
| 208 if self.Confirm("Automatically increment PATCH_LEVEL? (Saying 'n' will " | |
| 209 "fire up your EDITOR on %s so you can make arbitrary " | |
| 210 "changes. When you're done, save the file and exit your " | |
| 211 "EDITOR.)" % self.Config(VERSION_FILE)): | |
| 212 text = FileToText(self.Config(VERSION_FILE)) | |
| 213 text = MSub(r"(?<=#define PATCH_LEVEL)(?P<space>\s+)\d*$", | |
| 214 r"\g<space>%s" % new_patch, | |
| 215 text) | |
| 216 TextToFile(text, self.Config(VERSION_FILE)) | |
| 217 else: | |
| 218 self.Editor(self.Config(VERSION_FILE)) | |
| 219 self.ReadAndPersistVersion("new_") | |
| 220 | |
| 221 | |
| 222 class CommitLocal(Step): | |
| 223 MESSAGE = "Commit to local branch." | |
| 224 | |
| 225 def RunStep(self): | |
| 226 self.GitCommit(file_name=self.Config(COMMITMSG_FILE)) | |
| 227 | |
| 228 | |
| 229 class CommitRepository(Step): | |
| 230 MESSAGE = "Commit to the repository." | |
| 231 | |
| 232 def RunStep(self): | |
| 233 self.GitCheckout(self.Config(BRANCHNAME)) | |
| 234 self.WaitForLGTM() | |
| 235 self.GitPresubmit() | |
| 236 self.GitDCommit() | |
| 237 | |
| 238 | |
| 239 class PrepareSVN(Step): | |
| 240 MESSAGE = "Determine svn commit revision." | |
| 241 | |
| 242 def RunStep(self): | |
| 243 if self._options.revert_bleeding_edge: | |
| 244 return | |
| 245 self.GitSVNFetch() | |
| 246 commit_hash = self.GitLog(n=1, format="%H", grep=self["new_commit_msg"], | |
| 247 branch="svn/%s" % self["merge_to_branch"]) | |
| 248 if not commit_hash: | |
| 249 self.Die("Unable to map git commit to svn revision.") | |
| 250 self["svn_revision"] = self.GitSVNFindSVNRev(commit_hash) | |
| 251 print "subversion revision number is r%s" % self["svn_revision"] | |
| 252 | |
| 253 | |
| 254 class TagRevision(Step): | |
| 255 MESSAGE = "Create the tag." | |
| 256 | |
| 257 def RunStep(self): | |
| 258 if self._options.revert_bleeding_edge: | |
| 259 return | |
| 260 self["version"] = "%s.%s.%s.%s" % (self["new_major"], | |
| 261 self["new_minor"], | |
| 262 self["new_build"], | |
| 263 self["new_patch"]) | |
| 264 print "Creating tag svn/tags/%s" % self["version"] | |
| 265 if self["merge_to_branch"] == "trunk": | |
| 266 self["to_url"] = "trunk" | |
| 267 else: | |
| 268 self["to_url"] = "branches/%s" % self["merge_to_branch"] | |
| 269 self.SVN("copy -r %s https://v8.googlecode.com/svn/%s " | |
| 270 "https://v8.googlecode.com/svn/tags/%s -m " | |
| 271 "\"Tagging version %s\"" | |
| 272 % (self["svn_revision"], self["to_url"], | |
| 273 self["version"], self["version"])) | |
| 274 | |
| 275 | |
| 276 class CleanUp(Step): | |
| 277 MESSAGE = "Cleanup." | |
| 278 | |
| 279 def RunStep(self): | |
| 280 self.CommonCleanup() | |
| 281 if not self._options.revert_bleeding_edge: | |
| 282 print "*** SUMMARY ***" | |
| 283 print "version: %s" % self["version"] | |
| 284 print "branch: %s" % self["to_url"] | |
| 285 print "svn revision: %s" % self["svn_revision"] | |
| 286 if self["revision_list"]: | |
| 287 print "patches: %s" % self["revision_list"] | |
| 288 | |
| 289 | |
| 290 def RunMergeToBranch(config, | |
| 291 options, | |
| 292 side_effect_handler=DEFAULT_SIDE_EFFECT_HANDLER): | |
| 293 step_classes = [ | |
| 294 Preparation, | |
| 295 CreateBranch, | |
| 296 SearchArchitecturePorts, | |
| 297 FindGitRevisions, | |
| 298 ApplyPatches, | |
| 299 PrepareVersion, | |
| 300 IncrementVersion, | |
| 301 CommitLocal, | |
| 302 UploadStep, | |
| 303 CommitRepository, | |
| 304 PrepareSVN, | |
| 305 TagRevision, | |
| 306 CleanUp, | |
| 307 ] | |
| 308 | |
| 309 RunScript(step_classes, config, options, side_effect_handler) | |
| 310 | |
| 311 | |
| 312 def BuildOptions(): | |
| 313 result = optparse.OptionParser() | |
| 314 result.set_usage("""%prog [OPTIONS]... [BRANCH] [REVISION]... | |
| 315 | |
| 316 Performs the necessary steps to merge revisions from bleeding_edge | |
| 317 to other branches, including trunk.""") | |
| 318 result.add_option("-f", | |
| 319 help="Delete sentinel file.", | |
| 320 default=False, action="store_true") | |
| 321 result.add_option("-m", "--message", | |
| 322 help="Specify a commit message for the patch.") | |
| 323 result.add_option("-r", "--revert", | |
| 324 help="Revert specified patches.", | |
| 325 default=False, action="store_true") | |
| 326 result.add_option("-R", "--revert-bleeding-edge", | |
| 327 help="Revert specified patches from bleeding edge.", | |
| 328 default=False, action="store_true") | |
| 329 result.add_option("-p", "--patch", dest="p", | |
| 330 help="Specify a patch file to apply as part of the merge.") | |
| 331 result.add_option("-s", "--step", dest="s", | |
| 332 help="Specify the step where to start work. Default: 0.", | |
| 333 default=0, type="int") | |
| 334 return result | |
| 335 | |
| 336 | |
| 337 def ProcessOptions(options, args): | |
| 338 revert_from_bleeding_edge = 1 if options.revert_bleeding_edge else 0 | |
| 339 min_exp_args = 2 - revert_from_bleeding_edge | |
| 340 if len(args) < min_exp_args: | |
| 341 if not options.p: | |
| 342 print "Either a patch file or revision numbers must be specified" | |
| 343 return False | |
| 344 if not options.message: | |
| 345 print "You must specify a merge comment if no patches are specified" | |
| 346 return False | |
| 347 if options.s < 0: | |
| 348 print "Bad step number %d" % options.s | |
| 349 return False | |
| 350 return True | |
| 351 | |
| 352 | |
| 353 def Main(): | |
| 354 parser = BuildOptions() | |
| 355 (options, args) = parser.parse_args() | |
| 356 if not ProcessOptions(options, args): | |
| 357 parser.print_help() | |
| 358 return 1 | |
| 359 RunMergeToBranch(CONFIG, MergeToBranchOptions(options, args)) | |
| 360 | |
| 361 if __name__ == "__main__": | |
| 362 sys.exit(Main()) | |
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