[Predator] Add Clusterfuzz stacktrace parser.

appengine/findit/crash/type_enums.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+from collections import OrderedDict
+
 
 class CallStackFormatType(object):
   JAVA = 1
   SYZYASAN = 2
   DEFAULT = 3
 
 
 class CrashClient(object):
   FRACAS = 'fracas'
   CRACAS = 'cracas'
   CLUSTERFUZZ = 'clusterfuzz'
 
 
 class LanguageType(object):
   CPP = 1
   JAVA = 2
+
+
+class SanitizerType(object):
+  ADDRESS_SANITIZER = 1,
+  THREAD_SANITIZER = 2,
+  MEMORY_SANITIZER = 3,
+  SYZYASAN = 4,
+  UBSAN = 5
+  UNSUPPORTED = 6
+
+  stacktrace_marker_to_sanitizer = {
+      'AddressSanitizer': ADDRESS_SANITIZER,
+      'ThreadSanitizer': THREAD_SANITIZER,
+      'MemorySanitizer': MEMORY_SANITIZER,
+      'syzyasan': SYZYASAN,
+      ': runtime error:': UBSAN
+  }
+
+  # Some signature may contain others, for example 'syzyasan' contains 'asan',
+  # in order to match signature in build type correctly, use ordered dict with
+  # decreasing length of signature.
+  job_type_marker_to_sanitizer = OrderedDict(
+      [('syzyasan', SYZYASAN),
+       ('ubsan', UBSAN),
+       ('asan', ADDRESS_SANITIZER),
+       ('msan', MEMORY_SANITIZER),
+       ('tsan', THREAD_SANITIZER)])
+
+  @staticmethod
+  def GetSanitizerType(job_type, stacktrace_string):
+    for marker, sanitizer_type in (
+        SanitizerType.job_type_marker_to_sanitizer.iteritems()):
+      if marker.lower() in job_type.lower():
+        return sanitizer_type
+
+    for marker, sanitizer_type in (
+        SanitizerType.stacktrace_marker_to_sanitizer.iteritems()):
+      if marker.lower() in stacktrace_string.lower():
+        return sanitizer_type
+
+    return SanitizerType.UNSUPPORTED