strings_data_source.py revision 4e180b6a0b4720a9b8e9e959a882386f690f08ff 
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
5from data_source import DataSource
6from third_party.json_schema_compiler.json_parse import Parse
7
8class StringsDataSource(DataSource):
9  '''Provides templates with access to a key to string mapping defined in a
10  JSON configuration file.
11  '''
12  def __init__(self, server_instance, _):
13    self._cache = server_instance.compiled_fs_factory.Create(
14        server_instance.host_file_system_provider.GetTrunk(),
15        lambda _, strings_json: Parse(strings_json),
16        StringsDataSource)
17    self._strings_json_path = server_instance.strings_json_path
18
19  def Cron(self):
20    self._cache.GetFromFile(self._strings_json_path).Get()
21
22  def get(self, key):
23    return self._cache.GetFromFile(self._strings_json_path).Get()[key]
24