def modify_resource(self, modified_resource):
ddb_response = self.table.query(
KeyConditionExpression=Key(Constants.ddb_field_identifier()).eq(
modified_resource[Constants.event_identifier()]))
if len(ddb_response[Constants.ddb_response_attribute_name_items()]) == 0:
raise ValueError('Resource with identifier ' + modified_resource[Constants.event_identifier()] + ' not found')
ddb_response = self.table.put_item(Item=modified_resource)
return ddb_response
def handler(self, event, context):
"""
Request handler method for modify resource function.
"""
if event is None or Constants.event_path_parameters() not in event:
return response(http.HTTPStatus.BAD_REQUEST, Constants.error_insufficient_parameters())
if Constants.event_path_parameter_identifier() not in event[Constants.event_path_parameters()]:
return response(http.HTTPStatus.BAD_REQUEST, Constants.error_insufficient_parameters())
try:
body = json.loads(event[Constants.event_body()])
except JSONDecodeError as e:
return response(http.HTTPStatus.BAD_REQUEST, str(e))
identifier = event[Constants.event_path_parameters()][Constants.event_path_parameter_identifier()]
http_method = event[Constants.event_http_method()]
if http_method == HttpConstants.http_method_put() and body is not None:
try:
ddb_response = self.modify_resource(body)
ddb_response[Constants.event_identifier()] = identifier
return response(http.HTTPStatus.OK, json.dumps(ddb_response))
except ValueError as e:
return response(http.HTTPStatus.BAD_REQUEST, str(e))
return response(http.HTTPStatus.BAD_REQUEST, Constants.error_insufficient_parameters())
def test_insert_resource(self):
from resource_api.insert_resource.main.RequestHandler import RequestHandler
dynamodb = self.setup_mock_database('eu-west-1', 'testing')
request_handler = RequestHandler(dynamodb)
resource = self.generate_mock_resource()
event = generate_mock_event(HttpConstants.http_method_post(), resource)
handler_insert_response = request_handler.handler(event, None)
resource_dict_from_json = json.loads(event[Constants.event_body()])
resource_inserted = resource_dict_from_json
self.assertEqual(
handler_insert_response[Constants.response_status_code()],
http.HTTPStatus.CREATED, 'HTTP Status code not 201')
resource_identifier = resource_inserted[Constants.event_identifier()]
query_results = request_handler.get_table_connection().query(
KeyConditionExpression=Key(
Constants.ddb_field_identifier()).eq(resource_identifier),
ScanIndexForward=True)
inserted_resource = query_results[
Constants.ddb_response_attribute_name_items()][0]
self.assertIsNotNone(
inserted_resource[Constants.ddb_field_created_date()],
'Value not persisted as expected')
self.assertIsNotNone(
inserted_resource[Constants.ddb_field_modified_date()],
'Value not persisted as expected')
self.assertIsNotNone(
inserted_resource[Constants.ddb_field_entity_description()],
'Value not persisted as expected')
self.assertEqual(
inserted_resource[Constants.ddb_field_modified_date()],
inserted_resource[Constants.ddb_field_created_date()],
'Value not persisted as expected')
self.assertEqual(
inserted_resource[Constants.ddb_field_entity_description()],
resource_inserted['entityDescription'],
'Value not persisted as expected')
remove_mock_database(dynamodb)
def generate_mock_event(http_method, resource):
body_value = json.dumps(resource)
return {
Constants.event_http_method(): http_method,
Constants.event_body(): body_value,
Constants.event_path_parameters(): {Constants.event_path_parameter_identifier(): resource[Constants.event_identifier()]}
}
