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How to use create_event_source_mapping method in localstack

Best Python code snippet using localstack_python

test_lambda_integration.py

Source:test_lambda_integration.py

...51            role=lambda_su_role,52        )53        queue_url_1 = sqs_create_queue(QueueName=queue_name_1)54        queue_arn_1 = sqs_queue_arn(queue_url_1)55        rs = lambda_client.create_event_source_mapping(56            EventSourceArn=queue_arn_1, FunctionName=function_name57        )58        assert BATCH_SIZE_RANGES["sqs"][0] == rs["BatchSize"]59        uuid = rs["UUID"]60        def wait_for_event_source_mapping():61            return lambda_client.get_event_source_mapping(UUID=uuid)["State"] == "Enabled"62        assert poll_condition(wait_for_event_source_mapping, timeout=30)63        with pytest.raises(ClientError) as e:64            # Update batch size with invalid value65            lambda_client.update_event_source_mapping(66                UUID=uuid,67                FunctionName=function_name,68                BatchSize=BATCH_SIZE_RANGES["sqs"][1] + 1,69            )70        e.match(INVALID_PARAMETER_VALUE_EXCEPTION)71        queue_url_2 = sqs_create_queue(QueueName=queue_name_2)72        queue_arn_2 = sqs_queue_arn(queue_url_2)73        with pytest.raises(ClientError) as e:74            # Create event source mapping with invalid batch size value75            lambda_client.create_event_source_mapping(76                EventSourceArn=queue_arn_2,77                FunctionName=function_name,78                BatchSize=BATCH_SIZE_RANGES["sqs"][1] + 1,79            )80        e.match(INVALID_PARAMETER_VALUE_EXCEPTION)81        table_description = dynamodb_create_table(82            table_name=ddb_table,83            partition_key="id",84            stream_view_type="NEW_IMAGE",85        )["TableDescription"]86        # table ARNs are not sufficient as event source, needs to be a dynamodb stream arn87        if not is_old_provider():88            with pytest.raises(ClientError) as e:89                lambda_client.create_event_source_mapping(90                    EventSourceArn=table_description["TableArn"],91                    FunctionName=function_name,92                    StartingPosition="LATEST",93                )94            e.match(INVALID_PARAMETER_VALUE_EXCEPTION)95        # check if event source mapping can be created with latest stream ARN96        rs = lambda_client.create_event_source_mapping(97            EventSourceArn=table_description["LatestStreamArn"],98            FunctionName=function_name,99            StartingPosition="LATEST",100        )101        assert BATCH_SIZE_RANGES["dynamodb"][0] == rs["BatchSize"]102    def test_disabled_event_source_mapping_with_dynamodb(103        self,104        create_lambda_function,105        lambda_client,106        dynamodb_resource,107        dynamodb_client,108        dynamodb_create_table,109        logs_client,110        dynamodbstreams_client,111        lambda_su_role,112    ):113        function_name = f"lambda_func-{short_uid()}"114        ddb_table = f"ddb_table-{short_uid()}"115        create_lambda_function(116            func_name=function_name,117            handler_file=TEST_LAMBDA_PYTHON_ECHO,118            runtime=LAMBDA_RUNTIME_PYTHON36,119            role=lambda_su_role,120        )121        latest_stream_arn = dynamodb_create_table(122            table_name=ddb_table, partition_key="id", stream_view_type="NEW_IMAGE"123        )["TableDescription"]["LatestStreamArn"]124        rs = lambda_client.create_event_source_mapping(125            FunctionName=function_name,126            EventSourceArn=latest_stream_arn,127            StartingPosition="TRIM_HORIZON",128            MaximumBatchingWindowInSeconds=1,129        )130        uuid = rs["UUID"]131        def wait_for_table_created():132            return (133                dynamodb_client.describe_table(TableName=ddb_table)["Table"]["TableStatus"]134                == "ACTIVE"135            )136        assert poll_condition(wait_for_table_created, timeout=30)137        def wait_for_stream_created():138            return (139                dynamodbstreams_client.describe_stream(StreamArn=latest_stream_arn)[140                    "StreamDescription"141                ]["StreamStatus"]142                == "ENABLED"143            )144        assert poll_condition(wait_for_stream_created, timeout=30)145        table = dynamodb_resource.Table(ddb_table)146        items = [147            {"id": short_uid(), "data": "data1"},148            {"id": short_uid(), "data": "data2"},149        ]150        table.put_item(Item=items[0])151        def assert_events():152            events = get_lambda_log_events(function_name, logs_client=logs_client)153            # lambda was invoked 1 time154            assert 1 == len(events[0]["Records"])155        # might take some time against AWS156        retry(assert_events, sleep=3, retries=10)157        # disable event source mapping158        lambda_client.update_event_source_mapping(UUID=uuid, Enabled=False)159        table.put_item(Item=items[1])160        events = get_lambda_log_events(function_name, logs_client=logs_client)161        # lambda no longer invoked, still have 1 event162        assert 1 == len(events[0]["Records"])163    # TODO invalid test against AWS, this behavior just is not correct164    def test_deletion_event_source_mapping_with_dynamodb(165        self, create_lambda_function, lambda_client, dynamodb_client, lambda_su_role166    ):167        function_name = f"lambda_func-{short_uid()}"168        ddb_table = f"ddb_table-{short_uid()}"169        create_lambda_function(170            func_name=function_name,171            handler_file=TEST_LAMBDA_PYTHON_ECHO,172            runtime=LAMBDA_RUNTIME_PYTHON36,173            role=lambda_su_role,174        )175        latest_stream_arn = aws_stack.create_dynamodb_table(176            table_name=ddb_table,177            partition_key="id",178            client=dynamodb_client,179            stream_view_type="NEW_IMAGE",180        )["TableDescription"]["LatestStreamArn"]181        lambda_client.create_event_source_mapping(182            FunctionName=function_name,183            EventSourceArn=latest_stream_arn,184            StartingPosition="TRIM_HORIZON",185        )186        def wait_for_table_created():187            return (188                dynamodb_client.describe_table(TableName=ddb_table)["Table"]["TableStatus"]189                == "ACTIVE"190            )191        assert poll_condition(wait_for_table_created, timeout=30)192        dynamodb_client.delete_table(TableName=ddb_table)193        result = lambda_client.list_event_source_mappings(EventSourceArn=latest_stream_arn)194        assert 1 == len(result["EventSourceMappings"])195    def test_event_source_mapping_with_sqs(196        self,197        create_lambda_function,198        lambda_client,199        sqs_client,200        sqs_create_queue,201        sqs_queue_arn,202        logs_client,203        lambda_su_role,204    ):205        function_name = f"lambda_func-{short_uid()}"206        queue_name_1 = f"queue-{short_uid()}-1"207        create_lambda_function(208            func_name=function_name,209            handler_file=TEST_LAMBDA_PYTHON_ECHO,210            runtime=LAMBDA_RUNTIME_PYTHON36,211            role=lambda_su_role,212        )213        queue_url_1 = sqs_create_queue(QueueName=queue_name_1)214        queue_arn_1 = sqs_queue_arn(queue_url_1)215        lambda_client.create_event_source_mapping(216            EventSourceArn=queue_arn_1, FunctionName=function_name, MaximumBatchingWindowInSeconds=1217        )218        sqs_client.send_message(QueueUrl=queue_url_1, MessageBody=json.dumps({"foo": "bar"}))219        def assert_lambda_log_events():220            events = get_lambda_log_events(function_name=function_name, logs_client=logs_client)221            # lambda was invoked 1 time222            assert 1 == len(events[0]["Records"])223        retry(assert_lambda_log_events, sleep_before=3, retries=30)224        rs = sqs_client.receive_message(QueueUrl=queue_url_1)225        assert rs.get("Messages") is None226    def test_create_kinesis_event_source_mapping(227        self,228        create_lambda_function,229        lambda_client,230        kinesis_client,231        kinesis_create_stream,232        lambda_su_role,233        wait_for_stream_ready,234        logs_client,235    ):236        function_name = f"lambda_func-{short_uid()}"237        stream_name = f"test-foobar-{short_uid()}"238        create_lambda_function(239            func_name=function_name,240            handler_file=TEST_LAMBDA_PYTHON_ECHO,241            runtime=LAMBDA_RUNTIME_PYTHON36,242            role=lambda_su_role,243        )244        kinesis_create_stream(StreamName=stream_name, ShardCount=1)245        stream_arn = kinesis_client.describe_stream(StreamName=stream_name)["StreamDescription"][246            "StreamARN"247        ]248        # only valid against AWS / new provider (once implemented)249        if not is_old_provider():250            with pytest.raises(ClientError) as e:251                lambda_client.create_event_source_mapping(252                    EventSourceArn=stream_arn, FunctionName=function_name253                )254            e.match(INVALID_PARAMETER_VALUE_EXCEPTION)255        wait_for_stream_ready(stream_name=stream_name)256        lambda_client.create_event_source_mapping(257            EventSourceArn=stream_arn, FunctionName=function_name, StartingPosition="TRIM_HORIZON"258        )259        stream_summary = kinesis_client.describe_stream_summary(StreamName=stream_name)260        assert 1 == stream_summary["StreamDescriptionSummary"]["OpenShardCount"]261        num_events_kinesis = 10262        kinesis_client.put_records(263            Records=[264                {"Data": "{}", "PartitionKey": f"test_{i}"} for i in range(0, num_events_kinesis)265            ],266            StreamName=stream_name,267        )268        def get_lambda_events():269            events = get_lambda_log_events(function_name, logs_client=logs_client)270            assert events271            return events272        events = retry(get_lambda_events, retries=30)273        assert 10 == len(events[0]["Records"])274        assert "eventID" in events[0]["Records"][0]275        assert "eventSourceARN" in events[0]["Records"][0]276        assert "eventSource" in events[0]["Records"][0]277        assert "eventVersion" in events[0]["Records"][0]278        assert "eventName" in events[0]["Records"][0]279        assert "invokeIdentityArn" in events[0]["Records"][0]280        assert "awsRegion" in events[0]["Records"][0]281        assert "kinesis" in events[0]["Records"][0]282    def test_python_lambda_subscribe_sns_topic(283        self,284        create_lambda_function,285        sns_client,286        lambda_su_role,287        sns_topic,288        logs_client,289        lambda_client,290    ):291        function_name = f"{TEST_LAMBDA_FUNCTION_PREFIX}-{short_uid()}"292        permission_id = f"test-statement-{short_uid()}"293        lambda_creation_response = create_lambda_function(294            func_name=function_name,295            handler_file=TEST_LAMBDA_PYTHON_ECHO,296            runtime=LAMBDA_RUNTIME_PYTHON36,297            role=lambda_su_role,298        )299        lambda_arn = lambda_creation_response["CreateFunctionResponse"]["FunctionArn"]300        topic_arn = sns_topic["Attributes"]["TopicArn"]301        lambda_client.add_permission(302            FunctionName=function_name,303            StatementId=permission_id,304            Action="lambda:InvokeFunction",305            Principal="sns.amazonaws.com",306            SourceArn=topic_arn,307        )308        sns_client.subscribe(309            TopicArn=topic_arn,310            Protocol="lambda",311            Endpoint=lambda_arn,312        )313        subject = "[Subject] Test subject"314        message = "Hello world."315        sns_client.publish(TopicArn=topic_arn, Subject=subject, Message=message)316        events = retry(317            check_expected_lambda_log_events_length,318            retries=10,319            sleep=1,320            function_name=function_name,321            expected_length=1,322            regex_filter="Records.*Sns",323            logs_client=logs_client,324        )325        notification = events[0]["Records"][0]["Sns"]326        assert "Subject" in notification327        assert subject == notification["Subject"]328class TestLambdaHttpInvocation:329    def test_http_invocation_with_apigw_proxy(self, create_lambda_function):330        lambda_name = f"test_lambda_{short_uid()}"331        lambda_resource = "/api/v1/{proxy+}"332        lambda_path = "/api/v1/hello/world"333        lambda_request_context_path = "/" + TEST_STAGE_NAME + lambda_path334        lambda_request_context_resource_path = lambda_resource335        # create lambda function336        create_lambda_function(337            func_name=lambda_name,338            handler_file=TEST_LAMBDA_PYTHON,339            libs=TEST_LAMBDA_LIBS,340        )341        # create API Gateway and connect it to the Lambda proxy backend342        lambda_uri = aws_stack.lambda_function_arn(lambda_name)343        target_uri = f"arn:aws:apigateway:{aws_stack.get_region()}:lambda:path/2015-03-31/functions/{lambda_uri}/invocations"344        result = testutil.connect_api_gateway_to_http_with_lambda_proxy(345            "test_gateway2",346            target_uri,347            path=lambda_resource,348            stage_name=TEST_STAGE_NAME,349        )350        api_id = result["id"]351        url = path_based_url(api_id=api_id, stage_name=TEST_STAGE_NAME, path=lambda_path)352        result = safe_requests.post(353            url, data=b"{}", headers={"User-Agent": "python-requests/testing"}354        )355        content = json.loads(result.content)356        assert lambda_path == content["path"]357        assert lambda_resource == content["resource"]358        assert lambda_request_context_path == content["requestContext"]["path"]359        assert lambda_request_context_resource_path == content["requestContext"]["resourcePath"]360class TestKinesisSource:361    @patch.object(config, "SYNCHRONOUS_KINESIS_EVENTS", False)362    def test_kinesis_lambda_parallelism(363        self,364        lambda_client,365        kinesis_client,366        create_lambda_function,367        kinesis_create_stream,368        wait_for_stream_ready,369        logs_client,370        lambda_su_role,371    ):372        function_name = f"lambda_func-{short_uid()}"373        stream_name = f"test-foobar-{short_uid()}"374        create_lambda_function(375            handler_file=TEST_LAMBDA_PARALLEL_FILE,376            func_name=function_name,377            runtime=LAMBDA_RUNTIME_PYTHON36,378            role=lambda_su_role,379        )380        kinesis_create_stream(StreamName=stream_name, ShardCount=1)381        stream_arn = kinesis_client.describe_stream(StreamName=stream_name)["StreamDescription"][382            "StreamARN"383        ]384        wait_for_stream_ready(stream_name=stream_name)385        lambda_client.create_event_source_mapping(386            EventSourceArn=stream_arn,387            FunctionName=function_name,388            StartingPosition="TRIM_HORIZON",389            BatchSize=10,390        )391        stream_summary = kinesis_client.describe_stream_summary(StreamName=stream_name)392        assert 1 == stream_summary["StreamDescriptionSummary"]["OpenShardCount"]393        num_events_kinesis = 10394        # assure async call395        start = time.perf_counter()396        kinesis_client.put_records(397            Records=[398                {"Data": '{"batch": 0}', "PartitionKey": f"test_{i}"}399                for i in range(0, num_events_kinesis)...

test_subscribers.py

Source:test_subscribers.py

1from os import path2from mock import patch, Mock3import nose.tools as nt4import botocore5from lambda_uploader import subscribers, config6EX_CONFIG = path.normpath(path.join(path.dirname(__file__),7                          '../tests/configs'))8class TestKinesisSubscriber(object):9    @patch('lambda_uploader.subscribers.boto3.session.Session')10    def test_successfully_adds_kinesis_subscription(self, mocked_session):11        _mocked_lambda = Mock()12        _mocked_session = Mock()13        _mocked_session.client = Mock()14        _mocked_session.client.return_value = _mocked_lambda15        mocked_session.return_value = _mocked_session16        conf = config.Config(path.dirname(__file__),17                             config_file=path.join(EX_CONFIG, 'lambda-with-subscription.json'))18        subscribers.create_subscriptions(conf, None)19        nt.assert_equals(True, _mocked_lambda.create_event_source_mapping.called)20    @patch('lambda_uploader.subscribers.boto3.session.Session')21    def test_successfully_updates_kinesis_subscription(self, mocked_session):22        resonse = {"Error": {"Code": "ResourceConflictException", "Message": ""}}23        err = botocore.exceptions.ClientError(resonse, "create_event_source_mapping")24        _mocked_lambda = Mock()25        _mocked_lambda.create_event_source_mapping.side_effect = err26        _mocked_lambda.list_event_source_mappings.return_value = {27            'EventSourceMappings': [{'UUID': 'myuuid'}]28        }29        _mocked_session = Mock()30        _mocked_session.client = Mock()31        _mocked_session.client.return_value = _mocked_lambda32        mocked_session.return_value = _mocked_session33        conf = config.Config(path.dirname(__file__),34                             config_file=path.join(EX_CONFIG, 'lambda-with-subscription.json'))35        subscribers.create_subscriptions(conf, None)...

register_sqs.py

Source:register_sqs.py

1# client.create_event_source_mapping() works only if this 2# code is not run in a private VPC (either on ec2 or lambda).3# Might work in a private VPC if private lambda endpoints are available.4import json5import boto36def mylambda(event, context):7    print('Hello World from register_sqs!')8    print(event)9    register_sqs()10def register_sqs():    11    print('checkpoint 0')12    client = boto3.client("sts") # account_id = client.get_caller_identity()#["Account"]13    caller = client.get_caller_identity()14    print(caller)15    print('checkpoint 1')16    client = boto3.client('lambda', 'eu-west-1')17    print('checkpoint 2')18    response = client.create_event_source_mapping(19        EventSourceArn = 'arn:aws:sqs:eu-west-1:094033154904:mysqs',20        FunctionName = 'arn:aws:lambda:eu-west-1:094033154904:function:mylambda',21        Enabled = True,22        BatchSize = 1)23    print('checkpoint 3')24    25    return {26        'statusCode': 200,27        'body': json.dumps('Hello from Lambda!')28    }29    30if __name__ == '__main__':...

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