src/v8/tools/push-to-trunk/chromium_roll.py

   1 #!/usr/bin/env python
   2 # Copyright 2014 the V8 project authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 import argparse
   7 import os
   8 import sys
   9
  10 from common_includes import *
  11
  12
  13 class Preparation(Step):
  14   MESSAGE = "Preparation."
  15
  16   def RunStep(self):
  17     # Update v8 remote tracking branches.
  18     self.GitFetchOrigin()
  19
  20
  21 class DetectLastPush(Step):
  22   MESSAGE = "Detect commit ID of last push to trunk."
  23
  24   def RunStep(self):
  25     self["last_push"] = self._options.last_push or self.FindLastTrunkPush(
  26         branch="origin/master", include_patches=True)
  27     self["trunk_revision"] = self.GetCommitPositionNumber(self["last_push"])
  28     self["push_title"] = self.GitLog(n=1, format="%s",
  29                                      git_hash=self["last_push"])
  30
  31
  32 class SwitchChromium(Step):
  33   MESSAGE = "Switch to Chromium checkout."
  34
  35   def RunStep(self):
  36     self["v8_path"] = os.getcwd()
  37     cwd = self._options.chromium
  38     os.chdir(cwd)
  39     self.InitialEnvironmentChecks(cwd)
  40     # Check for a clean workdir.
  41     if not self.GitIsWorkdirClean(cwd=cwd):  # pragma: no cover
  42       self.Die("Workspace is not clean. Please commit or undo your changes.")
  43     # Assert that the DEPS file is there.
  44     if not os.path.exists(os.path.join(cwd, "DEPS")):  # pragma: no cover
  45       self.Die("DEPS file not present.")
  46
  47
  48 class UpdateChromiumCheckout(Step):
  49   MESSAGE = "Update the checkout and create a new branch."
  50
  51   def RunStep(self):
  52     self.GitCheckout("master", cwd=self._options.chromium)
  53     self.Command("gclient", "sync --nohooks", cwd=self._options.chromium)
  54     self.GitPull(cwd=self._options.chromium)
  55
  56     # Update v8 remotes.
  57     self.GitFetchOrigin()
  58
  59     self.GitCreateBranch("v8-roll-%s" % self["trunk_revision"],
  60                          cwd=self._options.chromium)
  61
  62
  63 class UploadCL(Step):
  64   MESSAGE = "Create and upload CL."
  65
  66   def RunStep(self):
  67     # Patch DEPS file.
  68     if self.Command(
  69         "roll-dep", "v8 %s" % self["trunk_revision"],
  70         cwd=self._options.chromium) is None:
  71       self.Die("Failed to create deps for %s" % self["trunk_revision"])
  72
  73     commit_title = "Update V8 to %s." % self["push_title"].lower()
  74     sheriff = ""
  75     if self["sheriff"]:
  76       sheriff = ("\n\nPlease reply to the V8 sheriff %s in case of problems."
  77                  % self["sheriff"])
  78     self.GitCommit("%s%s\n\nTBR=%s" %
  79                        (commit_title, sheriff, self._options.reviewer),
  80                    author=self._options.author,
  81                    cwd=self._options.chromium)
  82     if not self._options.dry_run:
  83       self.GitUpload(author=self._options.author,
  84                      force=True,
  85                      cq=self._options.use_commit_queue,
  86                      cwd=self._options.chromium)
  87       print "CL uploaded."
  88     else:
  89       self.GitCheckout("master", cwd=self._options.chromium)
  90       self.GitDeleteBranch("v8-roll-%s" % self["trunk_revision"],
  91                            cwd=self._options.chromium)
  92       print "Dry run - don't upload."
  93
  94
  95 # TODO(machenbach): Make this obsolete. We are only in the chromium chechout
  96 # for the initial .git check.
  97 class SwitchV8(Step):
  98   MESSAGE = "Returning to V8 checkout."
  99
 100   def RunStep(self):
 101     os.chdir(self["v8_path"])
 102
 103
 104 class CleanUp(Step):
 105   MESSAGE = "Done!"
 106
 107   def RunStep(self):
 108     print("Congratulations, you have successfully rolled the push r%s it into "
 109           "Chromium. Please don't forget to update the v8rel spreadsheet."
 110           % self["trunk_revision"])
 111
 112     # Clean up all temporary files.
 113     Command("rm", "-f %s*" % self._config["PERSISTFILE_BASENAME"])
 114
 115
 116 class ChromiumRoll(ScriptsBase):
 117   def _PrepareOptions(self, parser):
 118     parser.add_argument("-c", "--chromium", required=True,
 119                         help=("The path to your Chromium src/ "
 120                               "directory to automate the V8 roll."))
 121     parser.add_argument("-l", "--last-push",
 122                         help="The git commit ID of the last push to trunk.")
 123     parser.add_argument("--use-commit-queue",
 124                         help="Check the CQ bit on upload.",
 125                         default=False, action="store_true")
 126
 127   def _ProcessOptions(self, options):  # pragma: no cover
 128     if not options.author or not options.reviewer:
 129       print "A reviewer (-r) and an author (-a) are required."
 130       return False
 131
 132     options.requires_editor = False
 133     options.force = True
 134     options.manual = False
 135     return True
 136
 137   def _Config(self):
 138     return {
 139       "PERSISTFILE_BASENAME": "/tmp/v8-chromium-roll-tempfile",
 140     }
 141
 142   def _Steps(self):
 143     return [
 144       Preparation,
 145       DetectLastPush,
 146       DetermineV8Sheriff,
 147       SwitchChromium,
 148       UpdateChromiumCheckout,
 149       UploadCL,
 150       SwitchV8,
 151       CleanUp,
 152     ]
 153
 154
 155 if __name__ == "__main__":  # pragma: no cover
 156   sys.exit(ChromiumRoll().Run())