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

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 from caching_file_system import CachingFileSystem
   6 from empty_dir_file_system import EmptyDirFileSystem
   7 from github_file_system import GithubFileSystem as OldGithubFileSystem
   8 from new_github_file_system import GithubFileSystem as NewGithubFileSystem
   9
  10
  11 class GithubFileSystemProvider(object):
  12   '''Provides GithubFileSystems bound to an owner/repo pair.
  13   '''
  14
  15   def __init__(self, object_store_creator):
  16     self._object_store_creator = object_store_creator
  17
  18   def Create(self, owner, repo):
  19     '''Creates a GithubFileSystem. For legacy reasons this is hacked
  20     such that the apps samples returns the old GithubFileSystem.
  21
  22     |owner| is the owner of the GitHub account, e.g. 'GoogleChrome'.
  23     |repo| is the repository name, e.g. 'devtools-docs'.
  24     '''
  25     if owner == 'GoogleChrome' and repo == 'chrome-app-samples':
  26       # NOTE: The old GitHub file system implementation doesn't support being
  27       # wrapped by a CachingFileSystem. It's also too slow to run on the dev
  28       # server, since every app API page would need to read from it.
  29       return OldGithubFileSystem.CreateChromeAppsSamples(
  30           self._object_store_creator)
  31     return CachingFileSystem(
  32         NewGithubFileSystem.Create(owner, repo, self._object_store_creator),
  33         self._object_store_creator)
  34
  35   @staticmethod
  36   def ForEmpty():
  37     class EmptyImpl(object):
  38       def Create(self, owner, repo):
  39         return EmptyDirFileSystem()
  40     return EmptyImpl()