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      1 #!/usr/bin/env python
      2 # Copyright 2013 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 import argparse
     30 import json
     31 import os
     32 import re
     33 import sys
     34 import urllib
     35 
     36 from common_includes import *
     37 import push_to_trunk
     38 
     39 SETTINGS_LOCATION = "SETTINGS_LOCATION"
     40 
     41 CONFIG = {
     42   PERSISTFILE_BASENAME: "/tmp/v8-auto-push-tempfile",
     43   DOT_GIT_LOCATION: ".git",
     44   SETTINGS_LOCATION: "~/.auto-roll",
     45 }
     46 
     47 PUSH_MESSAGE_RE = re.compile(r".* \(based on bleeding_edge revision r(\d+)\)$")
     48 
     49 
     50 class Preparation(Step):
     51   MESSAGE = "Preparation."
     52 
     53   def RunStep(self):
     54     self.InitialEnvironmentChecks()
     55     self.CommonPrepare()
     56 
     57 
     58 class CheckAutoPushSettings(Step):
     59   MESSAGE = "Checking settings file."
     60 
     61   def RunStep(self):
     62     settings_file = os.path.realpath(self.Config(SETTINGS_LOCATION))
     63     if os.path.exists(settings_file):
     64       settings_dict = json.loads(FileToText(settings_file))
     65       if settings_dict.get("enable_auto_roll") is False:
     66         self.Die("Push to trunk disabled by auto-roll settings file: %s"
     67                  % settings_file)
     68 
     69 
     70 class CheckTreeStatus(Step):
     71   MESSAGE = "Checking v8 tree status message."
     72 
     73   def RunStep(self):
     74     status_url = "https://v8-status.appspot.com/current?format=json"
     75     status_json = self.ReadURL(status_url, wait_plan=[5, 20, 300, 300])
     76     self["tree_message"] = json.loads(status_json)["message"]
     77     if re.search(r"nopush|no push", self["tree_message"], flags=re.I):
     78       self.Die("Push to trunk disabled by tree state: %s"
     79                % self["tree_message"])
     80 
     81 
     82 class FetchLKGR(Step):
     83   MESSAGE = "Fetching V8 LKGR."
     84 
     85   def RunStep(self):
     86     lkgr_url = "https://v8-status.appspot.com/lkgr"
     87     # Retry several times since app engine might have issues.
     88     self["lkgr"] = self.ReadURL(lkgr_url, wait_plan=[5, 20, 300, 300])
     89 
     90 
     91 class CheckLastPush(Step):
     92   MESSAGE = "Checking last V8 push to trunk."
     93 
     94   def RunStep(self):
     95     last_push = self.FindLastTrunkPush()
     96 
     97     # Retrieve the bleeding edge revision of the last push from the text in
     98     # the push commit message.
     99     last_push_title = self.GitLog(n=1, format="%s", git_hash=last_push)
    100     last_push_be = PUSH_MESSAGE_RE.match(last_push_title).group(1)
    101 
    102     if not last_push_be:  # pragma: no cover
    103       self.Die("Could not retrieve bleeding edge revision for trunk push %s"
    104                % last_push)
    105 
    106     # TODO(machenbach): This metric counts all revisions. It could be
    107     # improved by counting only the revisions on bleeding_edge.
    108     if int(self["lkgr"]) - int(last_push_be) < 10:  # pragma: no cover
    109       # This makes sure the script doesn't push twice in a row when the cron
    110       # job retries several times.
    111       self.Die("Last push too recently: %s" % last_push_be)
    112 
    113 
    114 class PushToTrunk(Step):
    115   MESSAGE = "Pushing to trunk if specified."
    116 
    117   def RunStep(self):
    118     print "Pushing lkgr %s to trunk." % self["lkgr"]
    119 
    120     # TODO(machenbach): Update the script before calling it.
    121     if self._options.push:
    122       P = push_to_trunk.PushToTrunk
    123       self._side_effect_handler.Call(
    124           P(push_to_trunk.CONFIG, self._side_effect_handler).Run,
    125           ["--author", self._options.author,
    126            "--reviewer", self._options.reviewer,
    127            "--revision", self["lkgr"],
    128            "--force"])
    129 
    130 
    131 class AutoPush(ScriptsBase):
    132   def _PrepareOptions(self, parser):
    133     parser.add_argument("-p", "--push",
    134                         help="Push to trunk. Dry run if unspecified.",
    135                         default=False, action="store_true")
    136 
    137   def _ProcessOptions(self, options):
    138     if not options.author or not options.reviewer:  # pragma: no cover
    139       print "You need to specify author and reviewer."
    140       return False
    141     options.requires_editor = False
    142     return True
    143 
    144   def _Steps(self):
    145     return [
    146       Preparation,
    147       CheckAutoPushSettings,
    148       CheckTreeStatus,
    149       FetchLKGR,
    150       CheckLastPush,
    151       PushToTrunk,
    152     ]
    153 
    154 
    155 if __name__ == "__main__":  # pragma: no cover
    156   sys.exit(AutoPush(CONFIG).Run())
    157