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
29import optparse
30import re
31import sys
32
33from common_includes import *
34
35CONFIG = {
36  PERSISTFILE_BASENAME: "/tmp/v8-auto-roll-tempfile",
37  DOT_GIT_LOCATION: ".git",
38}
39
40
41class Preparation(Step):
42  MESSAGE = "Preparation."
43
44  def RunStep(self):
45    self.InitialEnvironmentChecks()
46    self.CommonPrepare()
47
48
49class FetchLatestRevision(Step):
50  MESSAGE = "Fetching latest V8 revision."
51
52  def RunStep(self):
53    log = self.Git("svn log -1 --oneline").strip()
54    match = re.match(r"^r(\d+) ", log)
55    if not match:
56      self.Die("Could not extract current svn revision from log.")
57    self.Persist("latest", match.group(1))
58
59
60class FetchLKGR(Step):
61  MESSAGE = "Fetching V8 LKGR."
62
63  def RunStep(self):
64    lkgr_url = "https://v8-status.appspot.com/lkgr"
65    # Retry several times since app engine might have issues.
66    self.Persist("lkgr", self.ReadURL(lkgr_url, wait_plan=[5, 20, 300, 300]))
67
68
69class PushToTrunk(Step):
70  MESSAGE = "Pushing to trunk if possible."
71
72  def RunStep(self):
73    self.RestoreIfUnset("latest")
74    self.RestoreIfUnset("lkgr")
75    latest = int(self._state["latest"])
76    lkgr = int(self._state["lkgr"])
77    if latest == lkgr:
78      print "ToT (r%d) is clean. Pushing to trunk." % latest
79      # TODO(machenbach): Call push to trunk script.
80    else:
81      print("ToT (r%d) is ahead of the LKGR (r%d). Skipping push to trunk."
82            % (latest, lkgr))
83
84
85def RunAutoRoll(config,
86                options,
87                side_effect_handler=DEFAULT_SIDE_EFFECT_HANDLER):
88  step_classes = [
89    Preparation,
90    FetchLatestRevision,
91    FetchLKGR,
92    PushToTrunk,
93  ]
94  RunScript(step_classes, config, options, side_effect_handler)
95
96
97def BuildOptions():
98  result = optparse.OptionParser()
99  result.add_option("-f", "--force", dest="f",
100                    help="Don't prompt the user.",
101                    default=True, action="store_true")
102  result.add_option("-s", "--step", dest="s",
103                    help="Specify the step where to start work. Default: 0.",
104                    default=0, type="int")
105  return result
106
107
108def Main():
109  parser = BuildOptions()
110  (options, args) = parser.parse_args()
111  RunAutoRoll(CONFIG, options)
112
113if __name__ == "__main__":
114  sys.exit(Main())
115