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How to use check_lambda_logs method in localstack

Best Python code snippet using localstack_python
test_lambda.py
Source:test_lambda.py
...40TEST_LAMBDA_JAR_URL = ('{url}/cloud/localstack/{name}/{version}/{name}-{version}-tests.jar').format(41    version=LOCALSTACK_MAVEN_VERSION, url=MAVEN_BASE_URL, name='localstack-utils')42TEST_LAMBDA_LIBS = ['localstack', 'localstack_client', 'requests', 'psutil', 'urllib3', 'chardet', 'certifi', 'idna']43class LambdaTestBase(unittest.TestCase):44    def check_lambda_logs(self, func_name, expected_lines=[]):45        logs_client = aws_stack.connect_to_service('logs')46        log_group_name = '/aws/lambda/%s' % func_name47        streams = logs_client.describe_log_streams(logGroupName=log_group_name)['logStreams']48        streams = sorted(streams, key=lambda x: x['creationTime'], reverse=True)49        log_events = logs_client.get_log_events(50            logGroupName=log_group_name, logStreamName=streams[0]['logStreamName'])['events']51        log_messages = [e['message'] for e in log_events]52        for line in expected_lines:53            if '.*' in line:54                found = [re.match(line, m) for m in log_messages]55                if any(found):56                    continue57            self.assertIn(line, log_messages)58class TestPythonRuntimes(LambdaTestBase):59    @classmethod60    def setUpClass(cls):61        cls.lambda_client = aws_stack.connect_to_service('lambda')62        cls.s3_client = aws_stack.connect_to_service('s3')63        zip_file = testutil.create_lambda_archive(64            load_file(TEST_LAMBDA_PYTHON),65            get_content=True,66            libs=TEST_LAMBDA_LIBS,67            runtime=LAMBDA_RUNTIME_PYTHON2768        )69        testutil.create_lambda_function(70            func_name=TEST_LAMBDA_NAME_PY,71            zip_file=zip_file,72            runtime=LAMBDA_RUNTIME_PYTHON2773        )74    @classmethod75    def tearDownClass(cls):76        cls.lambda_client.delete_function(FunctionName=TEST_LAMBDA_NAME_PY)77    def test_invocation_type_not_set(self):78        result = self.lambda_client.invoke(79            FunctionName=TEST_LAMBDA_NAME_PY, Payload=b'{}')80        result_data = json.loads(result['Payload'].read())81        self.assertEqual(result['StatusCode'], 200)82        self.assertEqual(result_data['event'], json.loads('{}'))83    def test_invocation_type_request_response(self):84        result = self.lambda_client.invoke(85            FunctionName=TEST_LAMBDA_NAME_PY,86            Payload=b'{}', InvocationType='RequestResponse')87        result_data = result['Payload'].read()88        result_data = json.loads(to_str(result_data))89        self.assertEqual(result['StatusCode'], 200)90        self.assertIsInstance(result_data, dict)91    def test_invocation_type_event(self):92        result = self.lambda_client.invoke(93            FunctionName=TEST_LAMBDA_NAME_PY,94            Payload=b'{}', InvocationType='Event')95        self.assertEqual(result['StatusCode'], 202)96    def test_invocation_type_dry_run(self):97        result = self.lambda_client.invoke(98            FunctionName=TEST_LAMBDA_NAME_PY, Payload=b'{}',99            InvocationType='DryRun')100        self.assertEqual(result['StatusCode'], 204)101    def test_lambda_environment(self):102        zip_file = testutil.create_lambda_archive(103            load_file(TEST_LAMBDA_ENV),104            get_content=True,105            libs=TEST_LAMBDA_LIBS,106            runtime=LAMBDA_RUNTIME_PYTHON27107        )108        testutil.create_lambda_function(109            func_name=TEST_LAMBDA_NAME_ENV,110            zip_file=zip_file,111            runtime=LAMBDA_RUNTIME_PYTHON27,112            envvars={'Hello': 'World'}113        )114        result = self.lambda_client.invoke(115            FunctionName=TEST_LAMBDA_NAME_ENV, Payload=b'{}')116        result_data = result['Payload']117        self.assertEqual(result['StatusCode'], 200)118        self.assertDictEqual(json.load(result_data), {'Hello': 'World'})119    def test_invocation_with_qualifier(self):120        lambda_name = 'test_lambda_%s' % short_uid()121        bucket_name = 'test_bucket_lambda2'122        bucket_key = 'test_lambda.zip'123        # upload zip file to S3124        zip_file = testutil.create_lambda_archive(125            load_file(TEST_LAMBDA_PYTHON),126            get_content=True,127            libs=TEST_LAMBDA_LIBS,128            runtime=LAMBDA_RUNTIME_PYTHON27129        )130        self.s3_client.create_bucket(Bucket=bucket_name)131        self.s3_client.upload_fileobj(132            BytesIO(zip_file), bucket_name, bucket_key)133        # create lambda function134        response = self.lambda_client.create_function(135            FunctionName=lambda_name, Handler='handler.handler',136            Runtime=lambda_api.LAMBDA_RUNTIME_PYTHON27, Role='r1',137            Code={138                'S3Bucket': bucket_name,139                'S3Key': bucket_key140            },141            Publish=True142        )143        self.assertIn('Version', response)144        # invoke lambda function145        data_before = b'{"foo": "bar"}'146        result = self.lambda_client.invoke(147            FunctionName=lambda_name,148            Payload=data_before,149            Qualifier=response['Version']150        )151        data_after = json.loads(result['Payload'].read())152        self.assertEqual(json.loads(to_str(data_before)), data_after['event'])153        context = data_after['context']154        self.assertEqual(response['Version'], context['function_version'])155        self.assertEqual(lambda_name, context['function_name'])156        # assert that logs are present157        expected = ['Lambda log message - print function']158        if use_docker():159            # Note that during regular test execution, nosetests captures the output from160            # the logging module - hence we can only expect this when running in Docker161            expected.append('.*Lambda log message - logging module')162        self.check_lambda_logs(lambda_name, expected_lines=expected)163    def test_upload_lambda_from_s3(self):164        lambda_name = 'test_lambda_%s' % short_uid()165        bucket_name = 'test_bucket_lambda'166        bucket_key = 'test_lambda.zip'167        # upload zip file to S3168        zip_file = testutil.create_lambda_archive(169            load_file(TEST_LAMBDA_PYTHON),170            get_content=True,171            libs=TEST_LAMBDA_LIBS,172            runtime=LAMBDA_RUNTIME_PYTHON27173        )174        self.s3_client.create_bucket(Bucket=bucket_name)175        self.s3_client.upload_fileobj(176            BytesIO(zip_file), bucket_name, bucket_key)177        # create lambda function178        self.lambda_client.create_function(179            FunctionName=lambda_name, Handler='handler.handler',180            Runtime=lambda_api.LAMBDA_RUNTIME_PYTHON27, Role='r1',181            Code={182                'S3Bucket': bucket_name,183                'S3Key': bucket_key184            }185        )186        # invoke lambda function187        data_before = b'{"foo": "bar"}'188        result = self.lambda_client.invoke(189            FunctionName=lambda_name, Payload=data_before)190        data_after = json.loads(result['Payload'].read())191        self.assertEqual(json.loads(to_str(data_before)), data_after['event'])192        context = data_after['context']193        self.assertEqual('$LATEST', context['function_version'])194        self.assertEqual(lambda_name, context['function_name'])195    def test_python_lambda_running_in_docker(self):196        if not use_docker():197            return198        zip_file = testutil.create_lambda_archive(199            load_file(TEST_LAMBDA_PYTHON3),200            get_content=True,201            libs=TEST_LAMBDA_LIBS,202            runtime=LAMBDA_RUNTIME_PYTHON36203        )204        testutil.create_lambda_function(205            func_name=TEST_LAMBDA_NAME_PY3,206            zip_file=zip_file,207            runtime=LAMBDA_RUNTIME_PYTHON36208        )209        result = self.lambda_client.invoke(210            FunctionName=TEST_LAMBDA_NAME_PY3, Payload=b'{}')211        result_data = result['Payload'].read()212        self.assertEqual(result['StatusCode'], 200)213        self.assertEqual(to_str(result_data).strip(), '{}')214class TestNodeJSRuntimes(LambdaTestBase):215    @classmethod216    def setUpClass(cls):217        cls.lambda_client = aws_stack.connect_to_service('lambda')218    def test_nodejs_lambda_running_in_docker(self):219        if not use_docker():220            return221        zip_file = testutil.create_zip_file(222            TEST_LAMBDA_NODEJS, get_content=True)223        testutil.create_lambda_function(224            func_name=TEST_LAMBDA_NAME_JS,225            zip_file=zip_file,226            handler='lambda_integration.handler',227            runtime=LAMBDA_RUNTIME_NODEJS228        )229        result = self.lambda_client.invoke(230            FunctionName=TEST_LAMBDA_NAME_JS, Payload=b'{}')231        result_data = result['Payload'].read()232        self.assertEqual(result['StatusCode'], 200)233        self.assertEqual(to_str(result_data).strip(), '{}')234        # assert that logs are present235        expected = ['.*Node.js Lambda handler executing.']236        self.check_lambda_logs(TEST_LAMBDA_NAME_JS, expected_lines=expected)237class TestCustomRuntimes(LambdaTestBase):238    @classmethod239    def setUpClass(cls):240        cls.lambda_client = aws_stack.connect_to_service('lambda')241    def test_nodejs_lambda_running_in_docker(self):242        if not use_docker():243            return244        zip_file = testutil.create_zip_file(245            TEST_LAMBDA_CUSTOM_RUNTIME, get_content=True)246        testutil.create_lambda_function(247            func_name=TEST_LAMBDA_NAME_CUSTOM_RUNTIME,248            zip_file=zip_file,249            handler='function.handler',250            runtime=LAMBDA_RUNTIME_CUSTOM_RUNTIME251        )252        result = self.lambda_client.invoke(253            FunctionName=TEST_LAMBDA_NAME_CUSTOM_RUNTIME,254            Payload=b'{"text":"Hello"}')255        result_data = result['Payload'].read()256        self.assertEqual(result['StatusCode'], 200)257        self.assertEqual(258            to_str(result_data).strip(),259            """Echoing request: '{"text": "Hello"}'""")260        # assert that logs are present261        expected = ['.*Custom Runtime Lambda handler executing.']262        self.check_lambda_logs(263            TEST_LAMBDA_NAME_CUSTOM_RUNTIME, expected_lines=expected)264class TestDotNetCoreRuntimes(LambdaTestBase):265    @classmethod266    def setUpClass(cls):267        cls.lambda_client = aws_stack.connect_to_service('lambda')268        # lambda .NET Core 2.0 is already a zip269        zip_file = TEST_LAMBDA_DOTNETCORE2270        cls.zip_file_content = None271        with open(zip_file, 'rb') as file_obj:272            cls.zip_file_content = file_obj.read()273    def test_dotnet_lambda_running_in_docker(self):274        if not use_docker():275            return276        testutil.create_lambda_function(277            func_name=TEST_LAMBDA_NAME_DOTNETCORE2,278            zip_file=self.zip_file_content,279            handler='DotNetCore2::DotNetCore2.Lambda.Function::SimpleFunctionHandler',280            runtime=LAMBDA_RUNTIME_DOTNETCORE2281        )282        result = self.lambda_client.invoke(283            FunctionName=TEST_LAMBDA_NAME_DOTNETCORE2, Payload=b'{}')284        result_data = result['Payload'].read()285        self.assertEqual(result['StatusCode'], 200)286        self.assertEqual(to_str(result_data).strip(), '{}')287        # assert that logs are present288        expected = ['Running .NET Core 2.0 Lambda']289        self.check_lambda_logs(TEST_LAMBDA_NAME_DOTNETCORE2, expected_lines=expected)290class TestRubyRuntimes(LambdaTestBase):291    @classmethod292    def setUpClass(cls):293        cls.lambda_client = aws_stack.connect_to_service('lambda')294    def test_ruby_lambda_running_in_docker(self):295        if not use_docker():296            return297        zip_file = testutil.create_zip_file(298            TEST_LAMBDA_RUBY, get_content=True)299        testutil.create_lambda_function(300            func_name=TEST_LAMBDA_NAME_RUBY,301            zip_file=zip_file,302            handler='lambda_integration.handler',303            runtime=LAMBDA_RUNTIME_RUBY25...
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