thirdparty/google_appengine/google/appengine/api/apiproxy_stub_map.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Mon, 17 Nov 2008 22:12:34 +0000
changeset 501 be89bf307478
parent 109 620f9b141567
child 828 f5fd65cc3bf3
permissions -rwxr-xr-x
Fix not working feed display for home settings public view. Modify blog javascript so that we can define how many feed entries we want to display. Change default number of entries to 3 as suggested by Leslie and Chris. Patch by: Pawel Solyga
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#!/usr/bin/env python
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#
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# Copyright 2007 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""Container of APIProxy stubs for more convenient unittesting.
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Classes/variables/functions defined here:
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  APIProxyStubMap: container of APIProxy stubs.
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  apiproxy: global instance of an APIProxyStubMap.
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  MakeSyncCall: APIProxy entry point.
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"""
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import sys
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def MakeSyncCall(service, call, request, response):
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  """The APIProxy entry point.
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  Args:
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    service: string representing which service to call
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    call: string representing which function to call
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    request: protocol buffer for the request
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    response: protocol buffer for the response
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  Raises:
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    apiproxy_errors.Error or a subclass.
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  """
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  stub = apiproxy.GetStub(service)
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  assert stub, 'No api proxy found for service "%s"' % service
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  stub.MakeSyncCall(service, call, request, response)
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class APIProxyStubMap:
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  """Container of APIProxy stubs for more convenient unittesting.
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  Stubs may be either trivial implementations of APIProxy services (e.g.
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  DatastoreFileStub, UserServiceStub) or "real" implementations.
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  For unittests, we may want to mix and match real and trivial implementations
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  of services in order to better focus testing on individual service
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  implementations. To achieve this, we allow the client to attach stubs to
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  service names, as well as define a default stub to be used if no specific
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  matching stub is identified.
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  """
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  def __init__(self, default_stub=None):
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    """Constructor.
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    Args:
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      default_stub: optional stub
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    'default_stub' will be used whenever no specific matching stub is found.
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    """
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    self.__stub_map = {}
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    self.__default_stub = default_stub
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  def RegisterStub(self, service, stub):
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    """Register the provided stub for the specified service.
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    Args:
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      service: string
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      stub: stub
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    """
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    assert not self.__stub_map.has_key(service)
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    self.__stub_map[service] = stub
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    if service == 'datastore':
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      self.RegisterStub('datastore_v3', stub)
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  def GetStub(self, service):
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    """Retrieve the stub registered for the specified service.
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    Args:
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      service: string
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    Returns:
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      stub
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    Returns the stub registered for 'service', and returns the default stub
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    if no such stub is found.
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    """
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    return self.__stub_map.get(service, self.__default_stub)
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def GetDefaultAPIProxy():
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  try:
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    runtime = __import__('google.appengine.runtime', globals(), locals(),
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                         ['apiproxy'])
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    return APIProxyStubMap(runtime.apiproxy)
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  except (AttributeError, ImportError):
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    return APIProxyStubMap()
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apiproxy = GetDefaultAPIProxy()