Docserver: refactor Servlet, ObjectStore, and ServerInstance architecture to

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

 # Copyright 2013 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 os
-import urlparse
+import sys
 
 from render_servlet import RenderServlet
-from fake_fetchers import ConfigureFakeFetchers
+from server_instance import ServerInstance
 from servlet import Request
 
+class _LocalRenderServletDelegate(object):
+  def CreateServerInstanceForChannel(self, channel):
+    return ServerInstance.ForLocal()
+
 class LocalRenderer(object):
   '''Renders pages fetched from the local file system.
   '''
-  def __init__(self, base_dir):
-    self._base_dir = base_dir.replace(os.sep, '/').rstrip('/')
-
-  def Render(self, path, headers=None, servlet=RenderServlet):
-    '''Renders |path|, returning a tuple of (status, contents, headers).
-    '''
-    headers = headers or {}
-    # TODO(kalman): do this via a LocalFileSystem not this fake AppEngine stuff.
-    ConfigureFakeFetchers(os.path.join(self._base_dir, 'docs'))
-    url_path = urlparse.urlparse(path.replace(os.sep, '/')).path
-    return servlet(Request(url_path, headers)).Get()
+  @staticmethod
+  def Render(path):
+    def render_path(path):
+      return RenderServlet(Request(path, 'http://localhost', {}),
+                           _LocalRenderServletDelegate(),
+                           default_channel='trunk').Get()
+    response = render_path(path)
+    while response.status in [301, 302]:
+      redirect = response.headers['Location']
+      sys.stderr.write('<!-- Redirected %s to %s -->\n' % (path, redirect))
+      response = render_path(redirect)
+    return response