Add support for bisect bots to post results to dashboard.

dashboard/dashboard/utils.py

 # Copyright 2015 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.
 
 """General functions which are useful throughout this project."""
 
 import base64
 import binascii
 import json
 import logging
 import os
 import re
 import time
 
 from apiclient import discovery
 from google.appengine.api import urlfetch
+from google.appengine.api import urlfetch_errors
 from google.appengine.api import users
 from google.appengine.ext import ndb
 from oauth2client.client import GoogleCredentials
 
 from dashboard import stored_object
 
 INTERNAL_DOMAIN_KEY = 'internal_domain_key'
 SHERIFF_DOMAINS_KEY = 'sheriff_domains_key'
 IP_WHITELIST_KEY = 'ip_whitelist'
 _PROJECT_ID_KEY = 'project_id'
@@ skipping 304 matching lines @@
                        % (expected_type, actual_type))
     missing = set(expected.keys()) - set(actual.keys())
     if missing:
       raise ValueError('Missing the following properties: %s'
                        % ','.join(missing))
     for key in expected:
       Validate(expected[key], actual[key])
   elif not IsValidType(expected, actual):
     raise ValueError('Invalid type. Expected: %s. Actual: %s.' %
                      (expected, actual_type))
+
+
+def FetchURL(request_url, skip_status_code=False):
+  """Wrapper around URL fetch service to make request.
+
+  Args:
+    request_url: URL of request.
+    skip_status_code: Skips return code check when True, default is False.
+
+  Returns:
+    Response object return by URL fetch, otherwise None when there's an error.
+  """
+  logging.info('URL being fetched: ' + request_url)
+  try:
+    response = urlfetch.fetch(request_url)
+  except urlfetch_errors.DeadlineExceededError:
+    logging.error('Deadline exceeded error checking %s', request_url)
+    return None
+  except urlfetch_errors.DownloadError as err:
+    # DownloadError is raised to indicate a non-specific failure when there
+    # was not a 4xx or 5xx status code.
+    logging.error(err)
+    return None
+  if skip_status_code:
+    return response
+  elif response.status_code != 200:
+    logging.error(
+        'ERROR %s checking %s', response.status_code, request_url)
+    return None
+  return response