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How to use get_event_request_context method in localstack

Best Python code snippet using localstack_python

invocations.py

Source:invocations.py

...284            if ":lambda:path" in uri:285                func_arn = (286                    uri.split(":lambda:path")[1].split("functions/")[1].split("/invocations")[0]287                )288            invocation_context.context = helpers.get_event_request_context(invocation_context)289            invocation_context.stage_variables = helpers.get_stage_variables(invocation_context)290            if invocation_context.authorizer_type:291                authorizer_context = {292                    invocation_context.authorizer_type: invocation_context.auth_context293                }294                invocation_context.context["authorizer"] = authorizer_context295            request_templates = RequestTemplates()296            payload = request_templates.render(invocation_context)297            # TODO: change this signature to InvocationContext as well!298            result = lambda_api.process_apigateway_invocation(299                func_arn,300                relative_path,301                payload,302                stage,303                api_id,304                headers,305                is_base64_encoded=invocation_context.is_data_base64_encoded,306                path_params=path_params,307                query_string_params=query_string_params,308                method=method,309                resource_path=resource_path,310                request_context=invocation_context.context,311                stage_variables=invocation_context.stage_variables,312            )313            if isinstance(result, FlaskResponse):314                response = flask_to_requests_response(result)315            elif isinstance(result, Response):316                response = result317            else:318                response = LambdaResponse()319                parsed_result = (320                    result if isinstance(result, dict) else json.loads(str(result or "{}"))321                )322                parsed_result = common.json_safe(parsed_result)323                parsed_result = {} if parsed_result is None else parsed_result324                response.status_code = int(parsed_result.get("statusCode", 200))325                parsed_headers = parsed_result.get("headers", {})326                if parsed_headers is not None:327                    response.headers.update(parsed_headers)328                try:329                    result_body = parsed_result.get("body")330                    if isinstance(result_body, dict):331                        response._content = json.dumps(result_body)332                    else:333                        body_bytes = to_bytes(to_str(result_body or ""))334                        if parsed_result.get("isBase64Encoded", False):335                            body_bytes = base64.b64decode(body_bytes)336                        response._content = body_bytes337                except Exception as e:338                    LOG.warning("Couldn't set Lambda response content: %s", e)339                    response._content = "{}"340                update_content_length(response)341                response.multi_value_headers = parsed_result.get("multiValueHeaders") or {}342            # apply custom response template343            invocation_context.response = response344            response_templates = ResponseTemplates()345            response_templates.render(invocation_context)346            invocation_context.response.headers["Content-Length"] = str(len(response.content or ""))347            return invocation_context.response348        raise Exception(349            f'API Gateway integration type "{integration_type}", action "{uri}", method "{method}"'350        )351    elif integration_type == "AWS":352        if "kinesis:action/" in uri:353            if uri.endswith("kinesis:action/PutRecord"):354                target = kinesis_listener.ACTION_PUT_RECORD355            elif uri.endswith("kinesis:action/PutRecords"):356                target = kinesis_listener.ACTION_PUT_RECORDS357            elif uri.endswith("kinesis:action/ListStreams"):358                target = kinesis_listener.ACTION_LIST_STREAMS359            else:360                LOG.info(361                    f"Unexpected API Gateway integration URI '{uri}' for integration type {integration_type}",362                )363                target = ""364            try:365                invocation_context.context = helpers.get_event_request_context(invocation_context)366                invocation_context.stage_variables = helpers.get_stage_variables(invocation_context)367                request_templates = RequestTemplates()368                payload = request_templates.render(invocation_context)369            except Exception as e:370                LOG.warning("Unable to convert API Gateway payload to str", e)371                raise372            # forward records to target kinesis stream373            headers = aws_stack.mock_aws_request_headers(374                service="kinesis", region_name=invocation_context.region_name375            )376            headers["X-Amz-Target"] = target377            result = common.make_http_request(378                url=config.service_url("kineses"), data=payload, headers=headers, method="POST"379            )380            # apply response template381            invocation_context.response = result382            response_templates = ResponseTemplates()383            response_templates.render(invocation_context)384            return invocation_context.response385        elif "states:action/" in uri:386            action = uri.split("/")[-1]387            if APPLICATION_JSON in integration.get("requestTemplates", {}):388                request_templates = RequestTemplates()389                payload = request_templates.render(invocation_context)390                payload = json.loads(payload)391            else:392                # XXX decoding in py3 sounds wrong, this actually might break393                payload = json.loads(data.decode("utf-8"))394            client = aws_stack.connect_to_service("stepfunctions")395            if isinstance(payload.get("input"), dict):396                payload["input"] = json.dumps(payload["input"])397            # Hot fix since step functions local package responses: Unsupported Operation: 'StartSyncExecution'398            method_name = (399                camel_to_snake_case(action) if action != "StartSyncExecution" else "start_execution"400            )401            try:402                method = getattr(client, method_name)403            except AttributeError:404                msg = "Invalid step function action: %s" % method_name405                LOG.error(msg)406                return make_error_response(msg, 400)407            result = method(**payload)408            result = json_safe({k: result[k] for k in result if k not in "ResponseMetadata"})409            response = requests_response(410                content=result,411                headers=aws_stack.mock_aws_request_headers(),412            )413            if action == "StartSyncExecution":414                # poll for the execution result and return it415                result = await_sfn_execution_result(result["executionArn"])416                result_status = result.get("status")417                if result_status != "SUCCEEDED":418                    return make_error_response(419                        "StepFunctions execution %s failed with status '%s'"420                        % (result["executionArn"], result_status),421                        500,422                    )423                result = json_safe(result)424                response = requests_response(content=result)425            # apply response templates426            invocation_context.response = response427            response_templates = ResponseTemplates()428            response_templates.render(invocation_context)429            # response = apply_request_response_templates(430            #     response, response_templates, content_type=APPLICATION_JSON431            # )432            return response433        # https://docs.aws.amazon.com/apigateway/api-reference/resource/integration/434        elif ("s3:path/" in uri or "s3:action/" in uri) and method == "GET":435            s3 = aws_stack.connect_to_service("s3")436            uri = apply_request_parameters(437                uri,438                integration=integration,439                path_params=path_params,440                query_params=query_string_params,441            )442            uri_match = re.match(TARGET_REGEX_PATH_S3_URI, uri) or re.match(443                TARGET_REGEX_ACTION_S3_URI, uri444            )445            if uri_match:446                bucket, object_key = uri_match.group("bucket", "object")447                LOG.debug("Getting request for bucket %s object %s", bucket, object_key)448                try:449                    object = s3.get_object(Bucket=bucket, Key=object_key)450                except s3.exceptions.NoSuchKey:451                    msg = "Object %s not found" % object_key452                    LOG.debug(msg)453                    return make_error_response(msg, 404)454                headers = aws_stack.mock_aws_request_headers(service="s3")455                if object.get("ContentType"):456                    headers["Content-Type"] = object["ContentType"]457                # stream used so large files do not fill memory458                response = request_response_stream(stream=object["Body"], headers=headers)459                return response460            else:461                msg = "Request URI does not match s3 specifications"462                LOG.warning(msg)463                return make_error_response(msg, 400)464        if method == "POST":465            if uri.startswith("arn:aws:apigateway:") and ":sqs:path" in uri:466                template = integration["requestTemplates"][APPLICATION_JSON]467                account_id, queue = uri.split("/")[-2:]468                region_name = uri.split(":")[3]469                if "GetQueueUrl" in template or "CreateQueue" in template:470                    request_templates = RequestTemplates()471                    payload = request_templates.render(invocation_context)472                    new_request = f"{payload}&QueueName={queue}"473                else:474                    request_templates = RequestTemplates()475                    payload = request_templates.render(invocation_context)476                    queue_url = f"{config.get_edge_url()}/{account_id}/{queue}"477                    new_request = f"{payload}&QueueUrl={queue_url}"478                headers = aws_stack.mock_aws_request_headers(service="sqs", region_name=region_name)479                url = urljoin(config.service_url("sqs"), f"{TEST_AWS_ACCOUNT_ID}/{queue}")480                result = common.make_http_request(481                    url, method="POST", headers=headers, data=new_request482                )483                return result484            elif uri.startswith("arn:aws:apigateway:") and ":sns:path" in uri:485                invocation_context.context = helpers.get_event_request_context(invocation_context)486                invocation_context.stage_variables = helpers.get_stage_variables(invocation_context)487                integration_response = SnsIntegration().invoke(invocation_context)488                return apply_request_response_templates(489                    integration_response, response_templates, content_type=APPLICATION_JSON490                )491        raise Exception(492            'API Gateway AWS integration action URI "%s", method "%s" not yet implemented'493            % (uri, method)494        )495    elif integration_type == "AWS_PROXY":496        if uri.startswith("arn:aws:apigateway:") and ":dynamodb:action" in uri:497            # arn:aws:apigateway:us-east-1:dynamodb:action/PutItem&Table=MusicCollection498            table_name = uri.split(":dynamodb:action")[1].split("&Table=")[1]499            action = uri.split(":dynamodb:action")[1].split("&Table=")[0]500            if "PutItem" in action and method == "PUT":501                response_template = response_templates.get("application/json")502                if response_template is None:503                    msg = "Invalid response template defined in integration response."504                    LOG.info("%s Existing: %s", msg, response_templates)505                    return make_error_response(msg, 404)506                response_template = json.loads(response_template)507                if response_template["TableName"] != table_name:508                    msg = "Invalid table name specified in integration response template."509                    return make_error_response(msg, 404)510                dynamo_client = aws_stack.connect_to_resource("dynamodb")511                table = dynamo_client.Table(table_name)512                event_data = {}513                data_dict = json.loads(data)514                for key, _ in response_template["Item"].items():515                    event_data[key] = data_dict[key]516                table.put_item(Item=event_data)517                response = requests_response(event_data)518                return response519        else:520            raise Exception(521                'API Gateway action uri "%s", integration type %s not yet implemented'522                % (uri, integration_type)523            )524    elif integration_type in ["HTTP_PROXY", "HTTP"]:525        if ":servicediscovery:" in uri:526            # check if this is a servicediscovery integration URI527            client = aws_stack.connect_to_service("servicediscovery")528            service_id = uri.split("/")[-1]529            instances = client.list_instances(ServiceId=service_id)["Instances"]530            instance = (instances or [None])[0]531            if instance and instance.get("Id"):532                uri = "http://%s/%s" % (instance["Id"], invocation_path.lstrip("/"))533        # apply custom request template534        invocation_context.context = helpers.get_event_request_context(invocation_context)535        invocation_context.stage_variables = helpers.get_stage_variables(invocation_context)536        request_templates = RequestTemplates()537        payload = request_templates.render(invocation_context)538        if isinstance(payload, dict):539            payload = json.dumps(payload)540        uri = apply_request_parameters(541            uri, integration=integration, path_params=path_params, query_params=query_string_params542        )543        result = requests.request(method=method, url=uri, data=payload, headers=headers)544        # apply custom response template545        invocation_context.response = result546        response_templates = ResponseTemplates()547        response_templates.render(invocation_context)548        return invocation_context.response...

integration.py

Source:integration.py

...97                response.headers[header_name] = value.strip("'")98        return response99class SnsIntegration(BackendIntegration):100    def invoke(self, invocation_context: ApiInvocationContext) -> Response:101        invocation_context.context = get_event_request_context(invocation_context)102        try:103            payload = self.request_templates.render(invocation_context)104        except Exception as e:105            LOG.warning("Failed to apply template for SNS integration", e)106            raise107        uri = (108            invocation_context.integration.get("uri")109            or invocation_context.integration.get("integrationUri")110            or ""111        )112        region_name = uri.split(":")[3]113        headers = aws_stack.mock_aws_request_headers(service="sns", region_name=region_name)114        return make_http_request(115            config.service_url("sns"), method="POST", headers=headers, data=payload116        )117class LambdaProxyIntegration(BackendIntegration):118    @classmethod119    def update_content_length(cls, response: Response):120        if response and response.content is not None:121            response.headers["Content-Length"] = str(len(response.content))122    def invoke(self, invocation_context: ApiInvocationContext):123        uri = (124            invocation_context.integration.get("uri")125            or invocation_context.integration.get("integrationUri")126            or ""127        )128        relative_path, query_string_params = extract_query_string_params(129            path=invocation_context.path_with_query_string130        )131        api_id = invocation_context.api_id132        stage = invocation_context.stage133        headers = invocation_context.headers134        resource_path = invocation_context.resource_path135        invocation_context.context = get_event_request_context(invocation_context)136        try:137            path_params = extract_path_params(path=relative_path, extracted_path=resource_path)138            invocation_context.path_params = path_params139        except Exception:140            path_params = {}141        func_arn = uri142        if ":lambda:path" in uri:143            func_arn = uri.split(":lambda:path")[1].split("functions/")[1].split("/invocations")[0]144        if invocation_context.authorizer_type:145            invocation_context.context["authorizer"] = invocation_context.auth_context146        payload = self.request_templates.render(invocation_context)147        # TODO: change this signature to InvocationContext as well!148        result = lambda_api.process_apigateway_invocation(149            func_arn,...

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