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# 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
import posixpath
import traceback
from data_source import DataSource
from docs_server_utils import FormatKey
from extensions_paths import (
ARTICLES_TEMPLATES, INTROS_TEMPLATES, PRIVATE_TEMPLATES)
from file_system import FileNotFoundError
from future import Collect
from path_util import AssertIsDirectory
class TemplateDataSource(DataSource):
'''Provides a DataSource interface for compiled templates.
'''
def __init__(self, server_instance, request=None):
self._dir = type(self)._BASE
AssertIsDirectory(self._dir)
self._request = request
self._template_cache = server_instance.compiled_fs_factory.ForTemplates(
server_instance.host_file_system_provider.GetTrunk())
self._file_system = server_instance.host_file_system_provider.GetTrunk()
def get(self, path):
try:
return self._template_cache.GetFromFile('%s%s' %
(self._dir, FormatKey(path))).Get()
except FileNotFoundError:
logging.warning(traceback.format_exc())
return None
def Cron(self):
futures = []
for root, _, files in self._file_system.Walk(self._dir):
futures += [self._template_cache.GetFromFile(
posixpath.join(self._dir, root, FormatKey(f)))
for f in files
if posixpath.splitext(f)[1] == '.html']
return Collect(futures)
class ArticleDataSource(TemplateDataSource):
'''Serves templates for Articles.
'''
_BASE = ARTICLES_TEMPLATES
class IntroDataSource(TemplateDataSource):
'''Serves templates for Intros.
'''
_BASE = INTROS_TEMPLATES
class PartialDataSource(TemplateDataSource):
'''Serves templates for private templates.
'''
_BASE = PRIVATE_TEMPLATES
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