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      1 # Copyright (c) 2009, Google Inc. All rights reserved.
      2 #
      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 disclaimer
     11 # in the documentation and/or other materials provided with the
     12 # distribution.
     13 #     * Neither the name of Google Inc. nor the names of its
     14 # contributors may be used to endorse or promote products derived from
     15 # 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 # WebKit's Python module for interacting with WebKit's buildbot
     30 
     31 import re
     32 import urllib2
     33 
     34 # Import WebKit-specific modules.
     35 from webkitpy.webkit_logging import log
     36 
     37 # WebKit includes a built copy of BeautifulSoup in Scripts/webkitpy
     38 # so this import should always succeed.
     39 from .BeautifulSoup import BeautifulSoup
     40 
     41 
     42 class BuildBot:
     43 
     44     default_host = "build.webkit.org"
     45 
     46     def __init__(self, host=default_host):
     47         self.buildbot_host = host
     48         self.buildbot_server_url = "http://%s/" % self.buildbot_host
     49 
     50         # If any Leopard builder/tester, Windows builder or Chromium builder is
     51         # red we should not be landing patches.  Other builders should be added
     52         # to this list once they are known to be reliable.
     53         # See https://bugs.webkit.org/show_bug.cgi?id=33296 and related bugs.
     54         self.core_builder_names_regexps = [
     55             "Leopard",
     56             "Windows.*Build",
     57             "Chromium",
     58         ]
     59 
     60     def _parse_builder_status_from_row(self, status_row):
     61         # If WebKit's buildbot has an XMLRPC interface we could use, we could
     62         # do something more sophisticated here.  For now we just parse out the
     63         # basics, enough to support basic questions like "is the tree green?"
     64         status_cells = status_row.findAll('td')
     65         builder = {}
     66 
     67         name_link = status_cells[0].find('a')
     68         builder['name'] = name_link.string
     69         # We could generate the builder_url from the name in a future version
     70         # of this code.
     71         builder['builder_url'] = self.buildbot_server_url + name_link['href']
     72 
     73         status_link = status_cells[1].find('a')
     74         if not status_link:
     75             # We failed to find a link in the first cell, just give up.  This
     76             # can happen if a builder is just-added, the first cell will just
     77             # be "no build"
     78             # Other parts of the code depend on is_green being present.
     79             builder['is_green'] = False
     80             return builder
     81         # Will be either a revision number or a build number
     82         revision_string = status_link.string
     83         # If revision_string has non-digits assume it's not a revision number.
     84         builder['built_revision'] = int(revision_string) \
     85                                     if not re.match('\D', revision_string) \
     86                                     else None
     87         builder['is_green'] = not re.search('fail',
     88                                             status_cells[1].renderContents())
     89         # We could parse out the build number instead, but for now just store
     90         # the URL.
     91         builder['build_url'] = self.buildbot_server_url + status_link['href']
     92 
     93         # We could parse out the current activity too.
     94 
     95         return builder
     96 
     97     def _builder_statuses_with_names_matching_regexps(self,
     98                                                       builder_statuses,
     99                                                       name_regexps):
    100         builders = []
    101         for builder in builder_statuses:
    102             for name_regexp in name_regexps:
    103                 if re.match(name_regexp, builder['name']):
    104                     builders.append(builder)
    105         return builders
    106 
    107     def red_core_builders(self):
    108         red_builders = []
    109         for builder in self._builder_statuses_with_names_matching_regexps(
    110                                self.builder_statuses(),
    111                                self.core_builder_names_regexps):
    112             if not builder['is_green']:
    113                 red_builders.append(builder)
    114         return red_builders
    115 
    116     def red_core_builders_names(self):
    117         red_builders = self.red_core_builders()
    118         return map(lambda builder: builder['name'], red_builders)
    119 
    120     def core_builders_are_green(self):
    121         return not self.red_core_builders()
    122 
    123     def builder_statuses(self):
    124         build_status_url = self.buildbot_server_url + 'one_box_per_builder'
    125         page = urllib2.urlopen(build_status_url)
    126         soup = BeautifulSoup(page)
    127 
    128         builders = []
    129         status_table = soup.find('table')
    130         for status_row in status_table.findAll('tr'):
    131             builder = self._parse_builder_status_from_row(status_row)
    132             builders.append(builder)
    133         return builders
    134