Die build.py, Die: Part 1 (BranchUtility and SubversionFetcher)

chrome/common/extensions/docs/server2/urlfetch.py

+# Copyright (c) 2012 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.
+
+import logging
+
+from google.appengine.api import urlfetch
+from memcache import MemcacheAdd, MemcacheGet

[Aaron Boodman, 2012/05/24 06:10:23]

memcache will need to be dependency injected at some point. Not a big deal now.

+
+class FetchException(Exception):

[Aaron Boodman, 2012/05/24 06:10:23]

Prefix with _.

[cduvall, 2012/05/25 20:02:23]

Done.

+  """Thrown when status code is not 200.
+  """
+  def __init__(self, url):
+    Exception.__init__(self, 'Fetch exception from ' + url)
+
+def fetch(url):
+  result = MemcacheGet(url, 'urls')

[Aaron Boodman, 2012/05/24 06:10:23]

Is there a way in python to get introspect a module name? That would be the
obvious thing to use as the namespace.

[cduvall, 2012/05/25 20:02:23]

Done.

+  if result is not None:
+    return result
+  logging.info('Fetch cache miss: ' + url)
+
+  result = urlfetch.fetch(url)
+
+  if result.status_code != 200:
+    raise FetchException(url)
+
+  MemcacheAdd(url, result, 'urls')
+  return result