Extensions docs server: Design changes, partial template support.

chrome/common/extensions/docs/server2/server_instance.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
+
+DOCS_PATH = 'docs/'
+STATIC_PATH = DOCS_PATH + 'static/'
+
+class ServerInstance(object):
+  """This class is used to hold a data source and fetcher for an instance of a
+  server. Each new branch will get its own ServerInstance.
+  """
+  def __init__(self, data_source, fetcher):
+    self._data_source = data_source
+    self._fetcher = fetcher
+
+  def Run(self, path, request_handler):
+    parts = path.split('/')
+    filename = parts[-1]
+    content = self._data_source.Render(filename, '{"test": "Hello"}')
+    if not content:
+      logging.info('Template not found for: ' + filename)
+      try:
+        result = self._fetcher.FetchResource(STATIC_PATH + filename)
+        for key in result.headers:
+          request_handler.response.headers[key] = result.headers[key]
+        content = result.content
+      except:
+        request_handler.response.set_status(404)
+        # TODO should be an actual not found page.
+        content = 'File not found.'
+    logging.info
+    request_handler.response.out.write(content)