PRESUBMIT: Enforce tracker prefix for all BUG entries

PRESUBMIT.py

 # Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import json
 import os
@@ skipping 405 matching lines @@
   if warning_descriptions:
     results.append(output_api.PresubmitPromptOrNotify(
         'You added one or more #includes of files that are temporarily\n'
         'allowed but being removed. Can you avoid introducing the\n'
         '#include? See relevant DEPS file(s) for details and contacts.\n'
         'See https://cs.chromium.org/chromium/src/buildtools/checkdeps/ for '
         'more details about checkdeps.',
         warning_descriptions))
   return results
 
+def _CheckCommitMessageBugEntry(input_api, output_api):
+  """Check that bug entries are well-formed in commit message."""
+  bogus_bug_msg = (
+      'Bogus BUG entry: %s. Please specify the issue tracker prefix and the '
+      'issue number, separated by a colon, e.g. webrtc:123 or chromium:12345.')
+  results = []
+  for bug in (input_api.change.BUG or '').split(','):
+    bug = bug.strip()
+    if bug.lower() == 'none':
+      continue
+    if ':' not in bug:
+      try:
+        if int(bug) > 100000:
+          # Rough indicator for current chromium bugs.
+          prefix_guess = 'chromium'
+        else:
+          prefix_guess = 'webrtc'
+        results.append('BUG entry requires issue tracker prefix, e.g. %s:%s' %
+                       (prefix_guess, bug))
+      except ValueError:
+        results.append(bogus_bug_msg % bug)
+    elif not re.match(r'\w+:\d+', bug):
+      results.append(bogus_bug_msg % bug)
+  return [output_api.PresubmitError(r) for r in results]
+
 def _CheckChangeHasBugField(input_api, output_api):
   """Requires that the changelist have a BUG= field.
 
   This check is stricter than the one in depot_tools/presubmit_canned_checks.py
   since it fails the presubmit if the BUG= field is missing or doesn't contain
   a bug reference.
   """
   if input_api.change.BUG:
     return []
   else:
@@ skipping 26 matching lines @@
       results.append(output_api.PresubmitError('%s could not be parsed: %s' %
           (affected_file.LocalPath(), parse_error)))
   return results
 
 
 def _RunPythonTests(input_api, output_api):
   def Join(*args):
     return input_api.os_path.join(input_api.PresubmitLocalPath(), *args)
 
   test_directories = [
+      '/',
       Join('webrtc', 'rtc_tools', 'py_event_log_analyzer'),
       Join('webrtc', 'rtc_tools'),
       Join('webrtc', 'audio', 'test', 'unittests'),
   ] + [
       root for root, _, files in os.walk(Join('tools_webrtc'))
       if any(f.endswith('_test.py') for f in files)
   ]
 
   tests = []
   for directory in test_directories:
@@ skipping 108 matching lines @@
 def CheckChangeOnCommit(input_api, output_api):
   results = []
   results.extend(_CommonChecks(input_api, output_api))
   results.extend(_VerifyNativeApiHeadersListIsValid(input_api, output_api))
   results.extend(input_api.canned_checks.CheckOwners(input_api, output_api))
   results.extend(input_api.canned_checks.CheckChangeWasUploaded(
       input_api, output_api))
   results.extend(input_api.canned_checks.CheckChangeHasDescription(
       input_api, output_api))
   results.extend(_CheckChangeHasBugField(input_api, output_api))
+  results.extend(_CheckCommitMessageBugEntry(input_api, output_api))
   results.extend(input_api.canned_checks.CheckTreeIsOpen(
       input_api, output_api,
       json_url='http://webrtc-status.appspot.com/current?format=json'))
   return results
 
 
 def _CheckOrphanHeaders(input_api, output_api):
   # We need to wait until we have an input_api object and use this
   # roundabout construct to import prebubmit_checks_lib because this file is
   # eval-ed and thus doesn't have __file__.
@@ skipping 29 matching lines @@
   results = []
   source_file_filter = lambda x: input_api.FilterSourceFile(
       x, white_list=(r'.+\.proto$',))
   for f in input_api.AffectedSourceFiles(source_file_filter):
     file_path = f.LocalPath()
     with open(file_path) as f:
       lines = f.readlines()
       if lines[-1] != '\n' or lines[-2] == '\n':
         results.append(output_api.PresubmitError(error_msg.format(file_path)))
   return results