How to use apply_request_response_templates method in localstack

Best Python code snippet using localstack_python

apigateway_listener.py

Source:apigateway_listener.py

...463                target = kinesis_listener.ACTION_PUT_RECORDS464            if uri.endswith("kinesis:action/ListStreams"):465                target = kinesis_listener.ACTION_LIST_STREAMS466            # apply request templates467            new_data = apply_request_response_templates(468                data, integration.get("requestTemplates"), content_type=APPLICATION_JSON469            )470            # forward records to target kinesis stream471            headers = aws_stack.mock_aws_request_headers(service="kinesis")472            headers["X-Amz-Target"] = target473            result = common.make_http_request(474                url=config.TEST_KINESIS_URL, method="POST", data=new_data, headers=headers475            )476            # apply response template477            result = apply_request_response_templates(478                result, response_templates, content_type=APPLICATION_JSON479            )480            return result481        elif "states:action/" in uri:482            action = uri.split("/")[-1]483            payload = {}484            if APPLICATION_JSON in integration.get("requestTemplates", {}):485                payload = apply_request_response_templates(486                    data,487                    integration.get("requestTemplates"),488                    content_type=APPLICATION_JSON,489                    as_json=True,490                )491            else:492                payload = json.loads(data.decode("utf-8"))493            client = aws_stack.connect_to_service("stepfunctions")494            # Hot fix since step functions local package responses: Unsupported Operation: 'StartSyncExecution'495            method_name = (496                camel_to_snake_case(action) if action != "StartSyncExecution" else "start_execution"497            )498            try:499                method = getattr(client, method_name)500            except AttributeError:501                msg = "Invalid step function action: %s" % method_name502                LOG.error(msg)503                return make_error_response(msg, 400)504            result = method(505                **payload,506            )507            result = json_safe({k: result[k] for k in result if k not in "ResponseMetadata"})508            response = requests_response(509                content=result,510                headers=aws_stack.mock_aws_request_headers(),511            )512            if action == "StartSyncExecution":513                # poll for the execution result and return it514                result = await_sfn_execution_result(result["executionArn"])515                result_status = result.get("status")516                if result_status != "SUCCEEDED":517                    return make_error_response(518                        "StepFunctions execution %s failed with status '%s'"519                        % (result["executionArn"], result_status),520                        500,521                    )522                result = json_safe(result)523                response = requests_response(content=result)524            # apply response templates525            response = apply_request_response_templates(526                response, response_templates, content_type=APPLICATION_JSON527            )528            return response529        elif "s3:path/" in uri and method == "GET":530            s3 = aws_stack.connect_to_service("s3")531            uri_match = re.match(TARGET_REGEX_S3_URI, uri)532            if uri_match:533                bucket, object_key = uri_match.group("bucket", "object")534                LOG.debug("Getting request for bucket %s object %s", bucket, object_key)535                try:536                    object = s3.get_object(Bucket=bucket, Key=object_key)537                except s3.exceptions.NoSuchKey:538                    msg = "Object %s not found" % object_key539                    LOG.debug(msg)540                    return make_error_response(msg, 404)541                headers = aws_stack.mock_aws_request_headers(service="s3")542                if object.get("ContentType"):543                    headers["Content-Type"] = object["ContentType"]544                # stream used so large files do not fill memory545                response = request_response_stream(stream=object["Body"], headers=headers)546                return response547            else:548                msg = "Request URI does not match s3 specifications"549                LOG.warning(msg)550                return make_error_response(msg, 400)551        if method == "POST":552            if uri.startswith("arn:aws:apigateway:") and ":sqs:path" in uri:553                template = integration["requestTemplates"][APPLICATION_JSON]554                account_id, queue = uri.split("/")[-2:]555                region_name = uri.split(":")[3]556                new_request = "%s&QueueName=%s" % (557                    aws_stack.render_velocity_template(template, data),558                    queue,559                )560                headers = aws_stack.mock_aws_request_headers(service="sqs", region_name=region_name)561                url = urljoin(config.TEST_SQS_URL, "%s/%s" % (TEST_AWS_ACCOUNT_ID, queue))562                result = common.make_http_request(563                    url, method="POST", headers=headers, data=new_request564                )565                return result566        raise Exception(567            'API Gateway AWS integration action URI "%s", method "%s" not yet implemented'568            % (uri, method)569        )570    elif integration_type == "AWS_PROXY":571        if uri.startswith("arn:aws:apigateway:") and ":dynamodb:action" in uri:572            # arn:aws:apigateway:us-east-1:dynamodb:action/PutItem&Table=MusicCollection573            table_name = uri.split(":dynamodb:action")[1].split("&Table=")[1]574            action = uri.split(":dynamodb:action")[1].split("&Table=")[0]575            if "PutItem" in action and method == "PUT":576                response_template = response_templates.get("application/json")577                if response_template is None:578                    msg = "Invalid response template defined in integration response."579                    LOG.info("%s Existing: %s" % (msg, response_templates))580                    return make_error_response(msg, 404)581                response_template = json.loads(response_template)582                if response_template["TableName"] != table_name:583                    msg = "Invalid table name specified in integration response template."584                    return make_error_response(msg, 404)585                dynamo_client = aws_stack.connect_to_resource("dynamodb")586                table = dynamo_client.Table(table_name)587                event_data = {}588                data_dict = json.loads(data)589                for key, _ in response_template["Item"].items():590                    event_data[key] = data_dict[key]591                table.put_item(Item=event_data)592                response = requests_response(event_data)593                return response594        else:595            raise Exception(596                'API Gateway action uri "%s", integration type %s not yet implemented'597                % (uri, integration_type)598            )599    elif integration_type in ["HTTP_PROXY", "HTTP"]:600        if ":servicediscovery:" in uri:601            # check if this is a servicediscovery integration URI602            client = aws_stack.connect_to_service("servicediscovery")603            service_id = uri.split("/")[-1]604            instances = client.list_instances(ServiceId=service_id)["Instances"]605            instance = (instances or [None])[0]606            if instance and instance.get("Id"):607                uri = "http://%s/%s" % (instance["Id"], invocation_path.lstrip("/"))608        # apply custom request template609        data = apply_template(integration, "request", data)610        if isinstance(data, dict):611            data = json.dumps(data)612        uri = apply_request_parameter(integration=integration, path_params=path_params)613        function = getattr(requests, method.lower())614        result = function(uri, data=data, headers=headers)615        # apply custom response template616        data = apply_template(integration, "response", data)617        return result618    elif integration_type == "MOCK":619        # return empty response - details filled in via responseParameters above...620        return requests_response({})621    if method == "OPTIONS":622        # fall back to returning CORS headers if this is an OPTIONS request623        return get_cors_response(headers)624    raise Exception(625        'API Gateway integration type "%s", method "%s", URI "%s" not yet implemented'626        % (integration_type, method, uri)627    )628def get_stage_variables(api_id, stage):629    region_name = [name for name, region in apigateway_backends.items() if api_id in region.apis][0]630    api_gateway_client = aws_stack.connect_to_service("apigateway", region_name=region_name)631    response = api_gateway_client.get_stage(restApiId=api_id, stageName=stage)632    return response.get("variables", None)633def get_lambda_event_request_context(634    method,635    path,636    data,637    headers,638    integration_uri=None,639    resource_id=None,640    resource_path=None,641    auth_info={},642):643    api_id, stage, relative_path_w_query_params = get_api_id_stage_invocation_path(path, headers)644    relative_path, query_string_params = extract_query_string_params(645        path=relative_path_w_query_params646    )647    source_ip = headers.get("X-Forwarded-For", ",").split(",")[-2].strip()648    integration_uri = integration_uri or ""649    account_id = integration_uri.split(":lambda:path")[-1].split(":function:")[0].split(":")[-1]650    account_id = account_id or TEST_AWS_ACCOUNT_ID651    domain_name = f"{api_id}.execute-api.{LOCALHOST_HOSTNAME}"652    request_context = {653        # adding stage to the request context path.654        # https://github.com/localstack/localstack/issues/2210655        "path": "/" + stage + relative_path,656        "resourcePath": resource_path or relative_path,657        "apiId": api_id,658        "domainPrefix": api_id,659        "domainName": domain_name,660        "accountId": account_id,661        "resourceId": resource_id,662        "stage": stage,663        "identity": {664            "accountId": account_id,665            "sourceIp": source_ip,666            "userAgent": headers.get("User-Agent"),667        },668        "httpMethod": method,669        "protocol": "HTTP/1.1",670        "requestTime": datetime.datetime.utcnow(),671        "requestTimeEpoch": int(time.time() * 1000),672    }673    if isinstance(auth_info, dict) and auth_info.get("context"):674        request_context["authorizer"] = auth_info["context"]675    return request_context676def apply_request_response_templates(677    data: Union[Response, bytes],678    templates: Dict[str, str],679    content_type: str = None,680    as_json: bool = False,681):682    """Apply the matching request/response template (if it exists) to the payload data and return the result"""683    content_type = content_type or APPLICATION_JSON684    is_response = isinstance(data, Response)685    templates = templates or {}686    template = templates.get(content_type)687    if not template:688        return data689    content = (data.content if is_response else data) or ""690    result = aws_stack.render_velocity_template(template, content, as_json=as_json)...

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