[Culprit-Finder] Seperate gae related part in cache_decorator and gitile repository to gae_libs/

appengine/findit/gae_libs/gitiles/cached_gitiles_repository.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 gae_libs.caches import CompressedMemCache
+from gae_libs.caches import PickledMemCache
+
+from lib.cache_decorator import Cached
+from lib.gitiles.gitiles_repository import GitilesRepository
+
+CACHE_EXPIRE_TIME_SECONDS = 24 * 60 * 60
+
+
+class CachedGitilesRepository(GitilesRepository):
+
+  @Cached(namespace='Gitiles-json-view', expire_time=CACHE_EXPIRE_TIME_SECONDS,
+          cache=CompressedMemCache())
+  def _SendRequestForJsonResponse(self, url, params=None):  # pragma: no cover
+    return super(CachedGitilesRepository, self)._SendRequestForJsonResponse(
+        url, params=params)
+
+  @Cached(namespace='Gitiles-text-view', expire_time=CACHE_EXPIRE_TIME_SECONDS,
+          cache=PickledMemCache())
+  def _SendRequestForTextResponse(self, url):  # pragma: no cover
+    return super(CachedGitilesRepository, self)._SendRequestForTextResponse(url)