def check_empty_response(self, orig_request, method_config, start_response):
"""If the response from the SPI is empty, return a HTTP 204 No Content.
Args:
orig_request: An ApiRequest, the original request from the user.
method_config: A dict, the API config of the method to be called.
start_response: A function with semantics defined in PEP-333.
Returns:
If the SPI response was empty, this returns a string containing the
response body that should be returned to the user. If the SPI response
wasn't empty, this returns None, indicating that we should not exit early
with a 204.
"""
response_config = method_config.get('response', {}).get('body')
if response_config == 'empty':
# The response to this function should be empty. We should return a 204.
# Note that it's possible that the SPI returned something, but we'll
# ignore it. This matches the behavior in the Endpoints server.
cors_handler = EndpointsDispatcher.__CheckCorsHeaders(orig_request)
return util.send_wsgi_no_content_response(start_response, cors_handler)
def test_send_wsgi_no_content_response(self):
response = util.send_wsgi_no_content_response(self.start_response)
self.assert_http_match(response, 204, [('Content-Length', '0')], '')
