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How to use do_update_alias method in localstack

Best Python code snippet using localstack_python

lambda_api.py

Source:lambda_api.py

...225    return get_function_version(arn, str(last_version + 1))226def do_list_versions(arn):227    return sorted([get_function_version(arn, version) for version in228                   arn_to_lambda.get(arn).versions.keys()], key=lambda k: str(k.get('Version')))229def do_update_alias(arn, alias, version, description=None):230    new_alias = {231        'AliasArn': arn + ':' + alias,232        'FunctionVersion': version,233        'Name': alias,234        'Description': description or ''235    }236    arn_to_lambda.get(arn).aliases[alias] = new_alias237    return new_alias238@cloudwatched('lambda')239def run_lambda(event, context, func_arn, version=None, suppress_output=False, asynchronous=False):240    if suppress_output:241        stdout_ = sys.stdout242        stderr_ = sys.stderr243        stream = StringIO()244        sys.stdout = stream245        sys.stderr = stream246    try:247        func_details = arn_to_lambda.get(func_arn)248        if not context:249            context = LambdaContext(func_details, version)250        result, log_output = LAMBDA_EXECUTOR.execute(func_arn, func_details,251            event, context=context, version=version, asynchronous=asynchronous)252    except Exception as e:253        return error_response('Error executing Lambda function: %s %s' % (e, traceback.format_exc()))254    finally:255        if suppress_output:256            sys.stdout = stdout_257            sys.stderr = stderr_258    return result259def exec_lambda_code(script, handler_function='handler', lambda_cwd=None, lambda_env=None):260    if lambda_cwd or lambda_env:261        exec_mutex.acquire()262        if lambda_cwd:263            previous_cwd = os.getcwd()264            os.chdir(lambda_cwd)265            sys.path = [lambda_cwd] + sys.path266        if lambda_env:267            previous_env = dict(os.environ)268            os.environ.update(lambda_env)269    # generate lambda file name270    lambda_id = 'l_%s' % short_uid()271    lambda_file = LAMBDA_SCRIPT_PATTERN.replace('*', lambda_id)272    save_file(lambda_file, script)273    # delete temporary .py and .pyc files on exit274    TMP_FILES.append(lambda_file)275    TMP_FILES.append('%sc' % lambda_file)276    try:277        handler_module = imp.load_source(lambda_id, lambda_file)278        module_vars = handler_module.__dict__279    except Exception as e:280        LOG.error('Unable to exec: %s %s' % (script, traceback.format_exc()))281        raise e282    finally:283        if lambda_cwd or lambda_env:284            if lambda_cwd:285                os.chdir(previous_cwd)286                sys.path.pop(0)287            if lambda_env:288                os.environ = previous_env289            exec_mutex.release()290    return module_vars[handler_function]291def get_handler_file_from_name(handler_name, runtime=LAMBDA_DEFAULT_RUNTIME):292    # TODO: support Java Lambdas in the future293    delimiter = '.'294    if runtime.startswith(LAMBDA_RUNTIME_NODEJS):295        file_ext = '.js'296    elif runtime.startswith(LAMBDA_RUNTIME_GOLANG):297        file_ext = ''298    elif runtime.startswith(LAMBDA_RUNTIME_DOTNETCORE2):299        file_ext = '.dll'300        delimiter = ':'301    else:302        file_ext = '.py'303    return '%s%s' % (handler_name.split(delimiter)[0], file_ext)304def get_handler_function_from_name(handler_name, runtime=LAMBDA_DEFAULT_RUNTIME):305    # TODO: support Java Lambdas in the future306    if runtime.startswith(LAMBDA_RUNTIME_DOTNETCORE2):307        return handler_name.split(':')[-1]308    else:309        return handler_name.split('.')[-1]310def error_response(msg, code=500, error_type='InternalFailure'):311    LOG.warning(msg)312    return aws_responses.flask_error_response(msg, code=code, error_type=error_type)313def get_zip_bytes(function_code):314    """Returns the ZIP file contents from a FunctionCode dict.315    :type function_code: dict316    :param function_code: https://docs.aws.amazon.com/lambda/latest/dg/API_FunctionCode.html317    :returns: bytes of the Zip file.318    """319    if 'S3Bucket' in function_code:320        s3_client = aws_stack.connect_to_service('s3')321        bytes_io = BytesIO()322        try:323            s3_client.download_fileobj(function_code['S3Bucket'], function_code['S3Key'], bytes_io)324            zip_file_content = bytes_io.getvalue()325        except Exception as e:326            return error_response('Unable to fetch Lambda archive from S3: %s' % e, 404)327    elif 'ZipFile' in function_code:328        zip_file_content = function_code['ZipFile']329        zip_file_content = base64.b64decode(zip_file_content)330    else:331        return error_response('No valid Lambda archive specified.', 400)332    return zip_file_content333def get_java_handler(zip_file_content, handler, main_file):334    """Creates a Java handler from an uploaded ZIP or JAR.335    :type zip_file_content: bytes336    :param zip_file_content: ZIP file bytes.337    :type handler: str338    :param handler: The lambda handler path.339    :type main_file: str340    :param main_file: Filepath to the uploaded ZIP or JAR file.341    :returns: function or flask.Response342    """343    if not is_jar_archive(zip_file_content):344        with zipfile.ZipFile(BytesIO(zip_file_content)) as zip_ref:345            jar_entries = [e for e in zip_ref.infolist() if e.filename.endswith('.jar')]346            if len(jar_entries) != 1:347                raise Exception('Expected exactly one *.jar entry in zip file, found %s' % len(jar_entries))348            zip_file_content = zip_ref.read(jar_entries[0].filename)349            LOG.info('Found jar file %s with %s bytes in Lambda zip archive' %350                     (jar_entries[0].filename, len(zip_file_content)))351            main_file = new_tmp_file()352            save_file(main_file, zip_file_content)353    if is_jar_archive(zip_file_content):354        def execute(event, context):355            result, log_output = lambda_executors.EXECUTOR_LOCAL.execute_java_lambda(356                event, context, handler=handler, main_file=main_file)357            return result358        return execute359    return error_response(360        'Unable to extract Java Lambda handler - file is not a valid zip/jar files', 400, error_type='ValidationError')361def set_function_code(code, lambda_name):362    def generic_handler(event, context):363        raise Exception(('Unable to find executor for Lambda function "%s". ' +364            'Note that Node.js and .NET Core Lambdas currently require LAMBDA_EXECUTOR=docker') % lambda_name)365    lambda_cwd = None366    arn = func_arn(lambda_name)367    runtime = arn_to_lambda[arn].runtime368    handler_name = arn_to_lambda.get(arn).handler369    lambda_environment = arn_to_lambda.get(arn).envvars370    if not handler_name:371        handler_name = LAMBDA_DEFAULT_HANDLER372    # Stop/remove any containers that this arn uses.373    LAMBDA_EXECUTOR.cleanup(arn)374    # Save the zip file to a temporary file that the lambda executors can reference.375    zip_file_content = get_zip_bytes(code)376    if isinstance(zip_file_content, Response):377        return zip_file_content378    tmp_dir = '%s/zipfile.%s' % (config.TMP_FOLDER, short_uid())379    mkdir(tmp_dir)380    tmp_file = '%s/%s' % (tmp_dir, LAMBDA_ZIP_FILE_NAME)381    save_file(tmp_file, zip_file_content)382    TMP_FILES.append(tmp_dir)383    lambda_cwd = tmp_dir384    # Set the appropriate lambda handler.385    lambda_handler = generic_handler386    if runtime == LAMBDA_RUNTIME_JAVA8:387        # The Lambda executors for Docker subclass LambdaExecutorContainers,388        # which runs Lambda in Docker by passing all *.jar files in the function389        # working directory as part of the classpath. Because of this, we need to390        # save the zip_file_content as a .jar here.391        if is_jar_archive(zip_file_content):392            jar_tmp_file = '{working_dir}/{file_name}'.format(393                working_dir=tmp_dir, file_name=LAMBDA_JAR_FILE_NAME)394            save_file(jar_tmp_file, zip_file_content)395        lambda_handler = get_java_handler(zip_file_content, handler_name, tmp_file)396        if isinstance(lambda_handler, Response):397            return lambda_handler398    else:399        handler_file = get_handler_file_from_name(handler_name, runtime=runtime)400        handler_function = get_handler_function_from_name(handler_name, runtime=runtime)401        # Lambda code must be uploaded in the Zip format.402        if not is_zip_file(zip_file_content):403            raise Exception(404                'Uploaded Lambda code for runtime ({}) is not in Zip format'.format(runtime))405        unzip(tmp_file, tmp_dir)406        main_file = '%s/%s' % (tmp_dir, handler_file)407        if os.path.isfile(main_file):408            # make sure the file is actually readable, then read contents409            ensure_readable(main_file)410            with open(main_file, 'rb') as file_obj:411                zip_file_content = file_obj.read()412        else:413            file_list = run('ls -la %s' % tmp_dir)414            LOG.debug('Lambda archive content:\n%s' % file_list)415            return error_response(416                'Unable to find handler script in Lambda archive.', 400,417                error_type='ValidationError')418        if runtime.startswith('python') and not use_docker():419            try:420                lambda_handler = exec_lambda_code(421                    zip_file_content,422                    handler_function=handler_function,423                    lambda_cwd=lambda_cwd,424                    lambda_env=lambda_environment)425            except Exception as e:426                raise Exception('Unable to get handler function from lambda code.', e)427    add_function_mapping(lambda_name, lambda_handler, lambda_cwd)428    return {'FunctionName': lambda_name}429def do_list_functions():430    funcs = []431    for f_arn, func in iteritems(arn_to_lambda):432        func_name = f_arn.split(':function:')[-1]433        arn = func_arn(func_name)434        func_details = arn_to_lambda.get(arn)435        funcs.append(format_func_details(func_details))436    return funcs437def format_func_details(func_details, version=None, always_add_version=False):438    version = version or '$LATEST'439    result = {440        'Version': version,441        'FunctionArn': func_details.arn(),442        'FunctionName': func_details.name(),443        'CodeSize': func_details.get_version(version).get('CodeSize'),444        'Handler': func_details.handler,445        'Runtime': func_details.runtime,446        'Timeout': func_details.timeout,447        'Environment': func_details.envvars,448        # 'Description': ''449        # 'MemorySize': 192,450    }451    if (always_add_version or version != '$LATEST') and len(result['FunctionArn'].split(':')) <= 7:452        result['FunctionArn'] += ':%s' % (version)453    return result454# ------------455# API METHODS456# ------------457@app.route('%s/functions' % PATH_ROOT, methods=['POST'])458def create_function():459    """ Create new function460        ---461        operationId: 'createFunction'462        parameters:463            - name: 'request'464              in: body465    """466    arn = 'n/a'467    try:468        data = json.loads(to_str(request.data))469        lambda_name = data['FunctionName']470        event_publisher.fire_event(event_publisher.EVENT_LAMBDA_CREATE_FUNC,471            payload={'n': event_publisher.get_hash(lambda_name)})472        arn = func_arn(lambda_name)473        if arn in arn_to_lambda:474            return error_response('Function already exist: %s' %475                lambda_name, 409, error_type='ResourceConflictException')476        arn_to_lambda[arn] = func_details = LambdaFunction(arn)477        func_details.versions = {'$LATEST': {'CodeSize': 50}}478        func_details.handler = data['Handler']479        func_details.runtime = data['Runtime']480        func_details.envvars = data.get('Environment', {}).get('Variables', {})481        func_details.timeout = data.get('Timeout')482        result = set_function_code(data['Code'], lambda_name)483        if isinstance(result, Response):484            del arn_to_lambda[arn]485            return result486        result.update({487            'DeadLetterConfig': data.get('DeadLetterConfig'),488            'Description': data.get('Description'),489            'Environment': {'Error': {}, 'Variables': func_details.envvars},490            'FunctionArn': arn,491            'FunctionName': lambda_name,492            'Handler': func_details.handler,493            'MemorySize': data.get('MemorySize'),494            'Role': data.get('Role'),495            'Runtime': func_details.runtime,496            'Timeout': data.get('Timeout'),497            'TracingConfig': {},498            'VpcConfig': {'SecurityGroupIds': [None], 'SubnetIds': [None], 'VpcId': None}499        })500        if data.get('Publish', False):501            result['Version'] = publish_new_function_version(arn)['Version']502        return jsonify(result or {})503    except Exception as e:504        del arn_to_lambda[arn]505        return error_response('Unknown error: %s %s' % (e, traceback.format_exc()))506@app.route('%s/functions/<function>' % PATH_ROOT, methods=['GET'])507def get_function(function):508    """ Get details for a single function509        ---510        operationId: 'getFunction'511        parameters:512            - name: 'request'513              in: body514            - name: 'function'515              in: path516    """517    funcs = do_list_functions()518    for func in funcs:519        if func['FunctionName'] == function:520            result = {521                'Configuration': func,522                'Code': {523                    'Location': '%s/code' % request.url524                }525            }526            lambda_details = arn_to_lambda.get(func['FunctionArn'])527            if lambda_details.concurrency is not None:528                result['Concurrency'] = lambda_details.concurrency529            return jsonify(result)530    return error_response(531        'Function not found: %s' % func_arn(function), 404, error_type='ResourceNotFoundException')532@app.route('%s/functions/' % PATH_ROOT, methods=['GET'])533def list_functions():534    """ List functions535        ---536        operationId: 'listFunctions'537        parameters:538            - name: 'request'539              in: body540    """541    funcs = do_list_functions()542    result = {}543    result['Functions'] = funcs544    return jsonify(result)545@app.route('%s/functions/<function>' % PATH_ROOT, methods=['DELETE'])546def delete_function(function):547    """ Delete an existing function548        ---549        operationId: 'deleteFunction'550        parameters:551            - name: 'request'552              in: body553    """554    arn = func_arn(function)555    # Stop/remove any containers that this arn uses.556    LAMBDA_EXECUTOR.cleanup(arn)557    try:558        arn_to_lambda.pop(arn)559    except KeyError:560        return error_response('Function does not exist: %s' % function, 404, error_type='ResourceNotFoundException')561    event_publisher.fire_event(event_publisher.EVENT_LAMBDA_DELETE_FUNC,562        payload={'n': event_publisher.get_hash(function)})563    i = 0564    while i < len(event_source_mappings):565        mapping = event_source_mappings[i]566        if mapping['FunctionArn'] == arn:567            del event_source_mappings[i]568            i -= 1569        i += 1570    result = {}571    return jsonify(result)572@app.route('%s/functions/<function>/code' % PATH_ROOT, methods=['PUT'])573def update_function_code(function):574    """ Update the code of an existing function575        ---576        operationId: 'updateFunctionCode'577        parameters:578            - name: 'request'579              in: body580    """581    data = json.loads(to_str(request.data))582    result = set_function_code(data, function)583    return jsonify(result or {})584@app.route('%s/functions/<function>/code' % PATH_ROOT, methods=['GET'])585def get_function_code(function):586    """ Get the code of an existing function587        ---588        operationId: 'getFunctionCode'589        parameters:590    """591    arn = func_arn(function)592    lambda_cwd = arn_to_lambda[arn].cwd593    tmp_file = '%s/%s' % (lambda_cwd, LAMBDA_ZIP_FILE_NAME)594    return Response(load_file(tmp_file, mode='rb'),595            mimetype='application/zip',596            headers={'Content-Disposition': 'attachment; filename=lambda_archive.zip'})597@app.route('%s/functions/<function>/configuration' % PATH_ROOT, methods=['GET'])598def get_function_configuration(function):599    """ Get the configuration of an existing function600        ---601        operationId: 'getFunctionConfiguration'602        parameters:603    """604    arn = func_arn(function)605    lambda_details = arn_to_lambda.get(arn)606    if not lambda_details:607        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')608    result = format_func_details(lambda_details)609    return jsonify(result)610@app.route('%s/functions/<function>/configuration' % PATH_ROOT, methods=['PUT'])611def update_function_configuration(function):612    """ Update the configuration of an existing function613        ---614        operationId: 'updateFunctionConfiguration'615        parameters:616            - name: 'request'617              in: body618    """619    data = json.loads(to_str(request.data))620    arn = func_arn(function)621    # Stop/remove any containers that this arn uses.622    LAMBDA_EXECUTOR.cleanup(arn)623    lambda_details = arn_to_lambda[arn]624    if data.get('Handler'):625        lambda_details.handler = data['Handler']626    if data.get('Runtime'):627        lambda_details.runtime = data['Runtime']628    if data.get('Environment'):629        lambda_details.envvars = data.get('Environment', {}).get('Variables', {})630    if data.get('Timeout'):631        lambda_details.timeout = data['Timeout']632    result = {}633    return jsonify(result)634@app.route('%s/functions/<function>/invocations' % PATH_ROOT, methods=['POST'])635def invoke_function(function):636    """ Invoke an existing function637        ---638        operationId: 'invokeFunction'639        parameters:640            - name: 'request'641              in: body642    """643    # function here can either be an arn or a function name644    arn = func_arn(function)645    # arn can also contain a qualifier, extract it from there if so646    m = re.match('(arn:aws:lambda:.*:.*:function:[a-zA-Z0-9-_]+)(:.*)?', arn)647    if m and m.group(2):648        qualifier = m.group(2)[1:]649        arn = m.group(1)650    else:651        qualifier = request.args.get('Qualifier')652    if arn not in arn_to_lambda:653        return error_response('Function does not exist: %s' % arn, 404, error_type='ResourceNotFoundException')654    if qualifier and not arn_to_lambda.get(arn).qualifier_exists(qualifier):655        return error_response('Function does not exist: {0}:{1}'.format(arn, qualifier), 404,656                              error_type='ResourceNotFoundException')657    data = None658    if request.data:659        try:660            data = json.loads(to_str(request.data))661        except Exception:662            return error_response('The payload is not JSON', 415, error_type='UnsupportedMediaTypeException')663    # Default invocation type is RequestResponse664    invocation_type = request.environ.get('HTTP_X_AMZ_INVOCATION_TYPE', 'RequestResponse')665    if invocation_type == 'RequestResponse':666        result = run_lambda(asynchronous=False, func_arn=arn, event=data, context={}, version=qualifier)667        if isinstance(result, dict):668            return jsonify(result)669        if result:670            return result671        return make_response('', 200)672    elif invocation_type == 'Event':673        run_lambda(asynchronous=True, func_arn=arn, event=data, context={}, version=qualifier)674        return make_response('', 202)675    elif invocation_type == 'DryRun':676        # Assume the dry run always passes.677        return make_response('', 204)678    else:679        return error_response('Invocation type not one of: RequestResponse, Event or DryRun',680                              code=400,681                              error_type='InvalidParameterValueException')682@app.route('%s/event-source-mappings/' % PATH_ROOT, methods=['GET'])683def list_event_source_mappings():684    """ List event source mappings685        ---686        operationId: 'listEventSourceMappings'687    """688    event_source_arn = request.args.get('EventSourceArn')689    function_name = request.args.get('FunctionName')690    mappings = event_source_mappings691    if event_source_arn:692        mappings = [m for m in mappings if event_source_arn == m.get('EventSourceArn')]693    if function_name:694        function_arn = func_arn(function_name)695        mappings = [m for m in mappings if function_arn == m.get('FunctionArn')]696    response = {697        'EventSourceMappings': mappings698    }699    return jsonify(response)700@app.route('%s/event-source-mappings/<mapping_uuid>' % PATH_ROOT, methods=['GET'])701def get_event_source_mapping(mapping_uuid):702    """ Get an existing event source mapping703        ---704        operationId: 'getEventSourceMapping'705        parameters:706            - name: 'request'707              in: body708    """709    mappings = event_source_mappings710    mappings = [m for m in mappings if mapping_uuid == m.get('UUID')]711    if len(mappings) == 0:712        return error_response('The resource you requested does not exist.', 404, error_type='ResourceNotFoundException')713    return jsonify(mappings[0])714@app.route('%s/event-source-mappings/' % PATH_ROOT, methods=['POST'])715def create_event_source_mapping():716    """ Create new event source mapping717        ---718        operationId: 'createEventSourceMapping'719        parameters:720            - name: 'request'721              in: body722    """723    data = json.loads(to_str(request.data))724    mapping = add_event_source(data['FunctionName'], data['EventSourceArn'])725    return jsonify(mapping)726@app.route('%s/event-source-mappings/<mapping_uuid>' % PATH_ROOT, methods=['PUT'])727def update_event_source_mapping(mapping_uuid):728    """ Update an existing event source mapping729        ---730        operationId: 'updateEventSourceMapping'731        parameters:732            - name: 'request'733              in: body734    """735    data = json.loads(request.data)736    if not mapping_uuid:737        return jsonify({})738    function_name = data.get('FunctionName') or ''739    enabled = data.get('Enabled') or True740    batch_size = data.get('BatchSize') or 100741    mapping = update_event_source(mapping_uuid, function_name, enabled, batch_size)742    return jsonify(mapping)743@app.route('%s/event-source-mappings/<mapping_uuid>' % PATH_ROOT, methods=['DELETE'])744def delete_event_source_mapping(mapping_uuid):745    """ Delete an event source mapping746        ---747        operationId: 'deleteEventSourceMapping'748    """749    if not mapping_uuid:750        return jsonify({})751    mapping = delete_event_source(mapping_uuid)752    return jsonify(mapping)753@app.route('%s/functions/<function>/versions' % PATH_ROOT, methods=['POST'])754def publish_version(function):755    arn = func_arn(function)756    if arn not in arn_to_lambda:757        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')758    return jsonify(publish_new_function_version(arn))759@app.route('%s/functions/<function>/versions' % PATH_ROOT, methods=['GET'])760def list_versions(function):761    arn = func_arn(function)762    if arn not in arn_to_lambda:763        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')764    return jsonify({'Versions': do_list_versions(arn)})765@app.route('%s/functions/<function>/aliases' % PATH_ROOT, methods=['POST'])766def create_alias(function):767    arn = func_arn(function)768    if arn not in arn_to_lambda:769        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')770    data = json.loads(request.data)771    alias = data.get('Name')772    if alias in arn_to_lambda.get(arn).aliases:773        return error_response('Alias already exists: %s' % arn + ':' + alias, 404,774                              error_type='ResourceConflictException')775    version = data.get('FunctionVersion')776    description = data.get('Description')777    return jsonify(do_update_alias(arn, alias, version, description))778@app.route('%s/functions/<function>/aliases/<name>' % PATH_ROOT, methods=['PUT'])779def update_alias(function, name):780    arn = func_arn(function)781    if arn not in arn_to_lambda:782        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')783    if name not in arn_to_lambda.get(arn).aliases:784        return error_response('Alias not found: %s' % arn + ':' + name, 404,785                              error_type='ResourceNotFoundException')786    current_alias = arn_to_lambda.get(arn).aliases.get(name)787    data = json.loads(request.data)788    version = data.get('FunctionVersion') or current_alias.get('FunctionVersion')789    description = data.get('Description') or current_alias.get('Description')790    return jsonify(do_update_alias(arn, name, version, description))791@app.route('%s/functions/<function>/aliases/<name>' % PATH_ROOT, methods=['GET'])792def get_alias(function, name):793    arn = func_arn(function)794    if arn not in arn_to_lambda:795        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')796    if name not in arn_to_lambda.get(arn).aliases:797        return error_response('Alias not found: %s' % arn + ':' + name, 404,798                              error_type='ResourceNotFoundException')799    return jsonify(arn_to_lambda.get(arn).aliases.get(name))800@app.route('%s/functions/<function>/aliases' % PATH_ROOT, methods=['GET'])801def list_aliases(function):802    arn = func_arn(function)803    if arn not in arn_to_lambda:804        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')...

34072_lambda_api.py

Source:34072_lambda_api.py

...195    return get_function_version(arn, str(last_version + 1))196def do_list_versions(arn):197    return sorted([get_function_version(arn, version) for version in198                   arn_to_lambda.get(arn).versions.keys()], key=lambda k: str(k.get('Version')))199def do_update_alias(arn, alias, version, description=None):200    new_alias = {201        'AliasArn': arn + ':' + alias,202        'FunctionVersion': version,203        'Name': alias,204        'Description': description or ''205    }206    arn_to_lambda.get(arn).aliases[alias] = new_alias207    return new_alias208def get_host_path_for_path_in_docker(path):209    return re.sub(r'^%s/(.*)$' % config.TMP_FOLDER,210                r'%s/\1' % config.HOST_TMP_FOLDER, path)211@cloudwatched('lambda')212def run_lambda(func, event, context, func_arn, suppress_output=False):213    if suppress_output:214        stdout_ = sys.stdout215        stderr_ = sys.stderr216        stream = StringIO()217        sys.stdout = stream218        sys.stderr = stream219    lambda_cwd = arn_to_lambda.get(func_arn).cwd220    result = None221    try:222        runtime = arn_to_lambda.get(func_arn).runtime223        handler = arn_to_lambda.get(func_arn).handler224        environment = arn_to_lambda.get(func_arn).envvars225        if use_docker():226            handler_args = '"%s"' % handler227            entrypoint = ''228            # prepare event body229            if not event:230                LOG.warning('Empty event body specified for invocation of Lambda "%s"' % func_arn)231                event = {}232            event_body = json.dumps(event)233            # if running a Java Lambda, set up classpath arguments234            if runtime == LAMBDA_RUNTIME_JAVA8:235                # copy executor jar into temp directory236                cp_r(LAMBDA_EXECUTOR_JAR, lambda_cwd)237                # TODO cleanup once we have custom Java Docker image238                taskdir = '/var/task'239                event_file = 'event_file.json'240                save_file(os.path.join(lambda_cwd, event_file), event_body)241                handler_args = ("bash -c 'cd %s; java -cp .:`ls *.jar | tr \"\\n\" \":\"` \"%s\" \"%s\" \"%s\"'" %242                    (taskdir, LAMBDA_EXECUTOR_CLASS, handler, event_file))243                entrypoint = ' --entrypoint ""'244            env_vars = ' '.join(['-e {}={}'.format(k, cmd_quote(v)) for (k, v) in environment.items()])245            if config.LAMBDA_REMOTE_DOCKER:246                cmd = (247                    'CONTAINER_ID="$(docker create'248                    '%s -e AWS_LAMBDA_EVENT_BODY="$AWS_LAMBDA_EVENT_BODY"'249                    ' -e HOSTNAME="$HOSTNAME"'250                    ' -e LOCALSTACK_HOSTNAME="$LOCALSTACK_HOSTNAME"'251                    ' %s'252                    ' "lambci/lambda:%s" %s'253                    ')";'254                    'docker cp "%s/." "$CONTAINER_ID:/var/task";'255                    'docker start -a "$CONTAINER_ID";'256                ) % (entrypoint, runtime, env_vars, handler_args, lambda_cwd)257            else:258                lambda_cwd_on_host = get_host_path_for_path_in_docker(lambda_cwd)259                cmd = (260                    'docker run'261                    '%s -v "%s":/var/task'262                    ' -e AWS_LAMBDA_EVENT_BODY="$AWS_LAMBDA_EVENT_BODY"'263                    ' -e HOSTNAME="$HOSTNAME"'264                    ' -e LOCALSTACK_HOSTNAME="$LOCALSTACK_HOSTNAME"'265                    ' %s'266                    ' --rm'267                    ' "lambci/lambda:%s" %s'268                ) % (entrypoint, lambda_cwd_on_host, env_vars, runtime, handler_args)269            print(cmd)270            event_body_escaped = event_body.replace("'", "\\'")271            docker_host = config.DOCKER_HOST_FROM_CONTAINER272            env_vars = {273                'AWS_LAMBDA_EVENT_BODY': event_body_escaped,274                'HOSTNAME': docker_host,275                'LOCALSTACK_HOSTNAME': docker_host276            }277            # lambci writes the Lambda result to stdout and logs to stderr, fetch it from there!278            result, log_output = run_lambda_executor(cmd, env_vars)279            LOG.debug('Lambda log output:\n%s' % log_output)280        else:281            # execute the Lambda function in a forked sub-process, sync result via queue282            queue = Queue()283            def do_execute():284                # now we're executing in the child process, safe to change CWD and ENV285                if lambda_cwd:286                    os.chdir(lambda_cwd)287                if environment:288                    os.environ.update(environment)289                result = func(event, context)290                queue.put(result)291            process = Process(target=do_execute)292            process.run()293            result = queue.get()294    except Exception as e:295        return error_response('Error executing Lambda function: %s %s' % (e, traceback.format_exc()))296    finally:297        if suppress_output:298            sys.stdout = stdout_299            sys.stderr = stderr_300    return result301def exec_lambda_code(script, handler_function='handler', lambda_cwd=None, lambda_env=None):302    if lambda_cwd or lambda_env:303        exec_mutex.acquire()304        if lambda_cwd:305            previous_cwd = os.getcwd()306            os.chdir(lambda_cwd)307            sys.path = [lambda_cwd] + sys.path308        if lambda_env:309            previous_env = dict(os.environ)310            os.environ.update(lambda_env)311    # generate lambda file name312    lambda_id = 'l_%s' % short_uid()313    lambda_file = LAMBDA_SCRIPT_PATTERN.replace('*', lambda_id)314    save_file(lambda_file, script)315    # delete temporary .py and .pyc files on exit316    TMP_FILES.append(lambda_file)317    TMP_FILES.append('%sc' % lambda_file)318    try:319        handler_module = imp.load_source(lambda_id, lambda_file)320        module_vars = handler_module.__dict__321    except Exception as e:322        LOG.error('Unable to exec: %s %s' % (script, traceback.format_exc()))323        raise e324    finally:325        if lambda_cwd or lambda_env:326            if lambda_cwd:327                os.chdir(previous_cwd)328                sys.path.pop(0)329            if lambda_env:330                os.environ = previous_env331            exec_mutex.release()332    return module_vars[handler_function]333def get_handler_file_from_name(handler_name, runtime=LAMBDA_RUNTIME_PYTHON27):334    # TODO: support Java Lambdas in the future335    file_ext = '.js' if runtime.startswith(LAMBDA_RUNTIME_NODEJS) else '.py'336    return '%s%s' % (handler_name.split('.')[0], file_ext)337def get_handler_function_from_name(handler_name, runtime=LAMBDA_RUNTIME_PYTHON27):338    # TODO: support Java Lambdas in the future339    return handler_name.split('.')[-1]340def error_response(msg, code=500, error_type='InternalFailure'):341    LOG.warning(msg)342    return aws_responses.flask_error_response(msg, code=code, error_type=error_type)343def run_lambda_executor(cmd, env_vars={}):344    process = run(cmd, async=True, stderr=subprocess.PIPE, outfile=subprocess.PIPE, env_vars=env_vars)345    return_code = process.wait()346    result = to_str(process.stdout.read())347    log_output = to_str(process.stderr.read())348    if return_code != 0:349        raise Exception('Lambda process returned error status code: %s. Output:\n%s' %350            (return_code, log_output))351    return result, log_output352def set_function_code(code, lambda_name):353    def generic_handler(event, context):354        raise Exception(('Unable to find executor for Lambda function "%s". ' +355            'Note that Node.js Lambdas currently require LAMBDA_EXECUTOR=docker') % lambda_name)356    lambda_handler = generic_handler357    lambda_cwd = None358    arn = func_arn(lambda_name)359    runtime = arn_to_lambda[arn].runtime360    handler_name = arn_to_lambda.get(arn).handler361    lambda_environment = arn_to_lambda.get(arn).envvars362    if not handler_name:363        handler_name = LAMBDA_DEFAULT_HANDLER364    handler_file = get_handler_file_from_name(handler_name, runtime=runtime)365    handler_function = get_handler_function_from_name(handler_name, runtime=runtime)366    if 'S3Bucket' in code:367        s3_client = aws_stack.connect_to_service('s3')368        bytes_io = BytesIO()369        try:370            s3_client.download_fileobj(code['S3Bucket'], code['S3Key'], bytes_io)371            zip_file_content = bytes_io.getvalue()372        except Exception as e:373            return error_response('Unable to fetch Lambda archive from S3: %s' % e, 404)374    elif 'ZipFile' in code:375        zip_file_content = code['ZipFile']376        zip_file_content = base64.b64decode(zip_file_content)377    else:378        return error_response('No valid Lambda archive specified.', 400)379    # save tmp file380    tmp_dir = '%s/zipfile.%s' % (config.TMP_FOLDER, short_uid())381    run('mkdir -p %s' % tmp_dir)382    tmp_file = '%s/%s' % (tmp_dir, LAMBDA_ZIP_FILE_NAME)383    save_file(tmp_file, zip_file_content)384    TMP_FILES.append(tmp_dir)385    lambda_cwd = tmp_dir386    # check if this is a ZIP file387    is_zip = is_zip_file(zip_file_content)388    if is_zip:389        unzip(tmp_file, tmp_dir)390        main_file = '%s/%s' % (tmp_dir, handler_file)391        if not os.path.isfile(main_file):392            # check if this is a zip file that contains a single JAR file393            jar_files = glob.glob('%s/*.jar' % tmp_dir)394            if len(jar_files) == 1:395                main_file = jar_files[0]396        if os.path.isfile(main_file):397            with open(main_file, 'rb') as file_obj:398                zip_file_content = file_obj.read()399        else:400            file_list = run('ls -la %s' % tmp_dir)401            LOG.debug('Lambda archive content:\n%s' % file_list)402            return error_response('Unable to find handler script in Lambda archive.', 400, error_type='ValidationError')403    # it could be a JAR file (regardless of whether wrapped in a ZIP file or not)404    is_jar = is_jar_archive(zip_file_content)405    if is_jar:406        def execute(event, context):407            event_file = EVENT_FILE_PATTERN.replace('*', short_uid())408            save_file(event_file, json.dumps(event))409            TMP_FILES.append(event_file)410            class_name = arn_to_lambda[arn].handler.split('::')[0]411            classpath = '%s:%s' % (LAMBDA_EXECUTOR_JAR, main_file)412            cmd = 'java -cp %s %s %s %s' % (classpath, LAMBDA_EXECUTOR_CLASS, class_name, event_file)413            result, log_output = run_lambda_executor(cmd)414            LOG.info('Lambda output: %s' % log_output.replace('\n', '\n> '))415            return result416        lambda_handler = execute417    elif runtime.startswith('python') and not use_docker():418        try:419            lambda_handler = exec_lambda_code(zip_file_content,420                handler_function=handler_function, lambda_cwd=lambda_cwd,421                lambda_env=lambda_environment)422        except Exception as e:423            raise Exception('Unable to get handler function from lambda code.', e)424    if not is_zip and not is_jar:425        raise Exception('Uploaded Lambda code is neither a ZIP nor JAR file.')426    add_function_mapping(lambda_name, lambda_handler, lambda_cwd)427    return {'FunctionName': lambda_name}428def do_list_functions():429    funcs = []430    for f_arn, func in iteritems(arn_to_lambda):431        func_name = f_arn.split(':function:')[-1]432        arn = func_arn(func_name)433        funcs.append({434            'Version': '$LATEST',435            'CodeSize': arn_to_lambda.get(arn).get_version('$LATEST').get('CodeSize'),436            'FunctionName': func_name,437            'FunctionArn': f_arn,438            'Handler': arn_to_lambda.get(arn).handler,439            'Runtime': arn_to_lambda.get(arn).runtime,440            'Timeout': LAMBDA_DEFAULT_TIMEOUT,441            # 'Description': ''442            # 'MemorySize': 192,443        })444    return funcs445@app.route('%s/functions' % PATH_ROOT, methods=['POST'])446def create_function():447    """ Create new function448        ---449        operationId: 'createFunction'450        parameters:451            - name: 'request'452              in: body453    """454    arn = 'n/a'455    try:456        data = json.loads(to_str(request.data))457        lambda_name = data['FunctionName']458        event_publisher.fire_event(event_publisher.EVENT_LAMBDA_CREATE_FUNC,459            payload={'n': event_publisher.get_hash(lambda_name)})460        arn = func_arn(lambda_name)461        if arn in arn_to_lambda:462            return error_response('Function already exist: %s' %463                lambda_name, 409, error_type='ResourceConflictException')464        arn_to_lambda[arn] = LambdaFunction(arn)465        arn_to_lambda[arn].versions = {'$LATEST': {'CodeSize': 50}}466        arn_to_lambda[arn].handler = data['Handler']467        arn_to_lambda[arn].runtime = data['Runtime']468        arn_to_lambda[arn].envvars = data.get('Environment', {}).get('Variables', {})469        result = set_function_code(data['Code'], lambda_name)470        if isinstance(result, Response):471            del arn_to_lambda[arn]472            return result473        result.update({474            'DeadLetterConfig': data.get('DeadLetterConfig'),475            'Description': data.get('Description'),476            'Environment': {'Error': {}, 'Variables': arn_to_lambda[arn].envvars},477            'FunctionArn': arn,478            'FunctionName': lambda_name,479            'Handler': arn_to_lambda[arn].handler,480            'MemorySize': data.get('MemorySize'),481            'Role': data.get('Role'),482            'Runtime': arn_to_lambda[arn].runtime,483            'Timeout': data.get('Timeout'),484            'TracingConfig': {},485            'VpcConfig': {'SecurityGroupIds': [None], 'SubnetIds': [None], 'VpcId': None}486        })487        return jsonify(result or {})488    except Exception as e:489        del arn_to_lambda[arn]490        return error_response('Unknown error: %s' % e)491@app.route('%s/functions/<function>' % PATH_ROOT, methods=['GET'])492def get_function(function):493    """ Get details for a single function494        ---495        operationId: 'getFunction'496        parameters:497            - name: 'request'498              in: body499            - name: 'function'500              in: path501    """502    funcs = do_list_functions()503    for func in funcs:504        if func['FunctionName'] == function:505            result = {506                'Configuration': func,507                'Code': {508                    'Location': '%s/code' % request.url509                }510            }511            return jsonify(result)512    result = {513        'ResponseMetadata': {514            'HTTPStatusCode': 404515        }516    }517    return make_response((jsonify(result), 404, {}))518@app.route('%s/functions/' % PATH_ROOT, methods=['GET'])519def list_functions():520    """ List functions521        ---522        operationId: 'listFunctions'523        parameters:524            - name: 'request'525              in: body526    """527    funcs = do_list_functions()528    result = {}529    result['Functions'] = funcs530    return jsonify(result)531@app.route('%s/functions/<function>' % PATH_ROOT, methods=['DELETE'])532def delete_function(function):533    """ Delete an existing function534        ---535        operationId: 'deleteFunction'536        parameters:537            - name: 'request'538              in: body539    """540    arn = func_arn(function)541    try:542        arn_to_lambda.pop(arn)543    except KeyError:544        return error_response('Function does not exist: %s' % function, 404, error_type='ResourceNotFoundException')545    event_publisher.fire_event(event_publisher.EVENT_LAMBDA_DELETE_FUNC,546        payload={'n': event_publisher.get_hash(function)})547    i = 0548    while i < len(event_source_mappings):549        mapping = event_source_mappings[i]550        if mapping['FunctionArn'] == arn:551            del event_source_mappings[i]552            i -= 1553        i += 1554    result = {}555    return jsonify(result)556@app.route('%s/functions/<function>/code' % PATH_ROOT, methods=['PUT'])557def update_function_code(function):558    """ Update the code of an existing function559        ---560        operationId: 'updateFunctionCode'561        parameters:562            - name: 'request'563              in: body564    """565    data = json.loads(to_str(request.data))566    result = set_function_code(data, function)567    return jsonify(result or {})568@app.route('%s/functions/<function>/code' % PATH_ROOT, methods=['GET'])569def get_function_code(function):570    """ Get the code of an existing function571        ---572        operationId: 'getFunctionCode'573        parameters:574    """575    arn = func_arn(function)576    lambda_cwd = arn_to_lambda[arn].cwd577    tmp_file = '%s/%s' % (lambda_cwd, LAMBDA_ZIP_FILE_NAME)578    return Response(load_file(tmp_file, mode='rb'),579            mimetype='application/zip',580            headers={'Content-Disposition': 'attachment; filename=lambda_archive.zip'})581@app.route('%s/functions/<function>/configuration' % PATH_ROOT, methods=['PUT'])582def update_function_configuration(function):583    """ Update the configuration of an existing function584        ---585        operationId: 'updateFunctionConfiguration'586        parameters:587            - name: 'request'588              in: body589    """590    data = json.loads(to_str(request.data))591    arn = func_arn(function)592    if data.get('Handler'):593        arn_to_lambda[arn].handler = data['Handler']594    if data.get('Runtime'):595        arn_to_lambda[arn].runtime = data['Runtime']596    if data.get('Environment'):597        arn_to_lambda[arn].envvars = data.get('Environment', {}).get('Variables', {})598    result = {}599    return jsonify(result)600@app.route('%s/functions/<function>/invocations' % PATH_ROOT, methods=['POST'])601def invoke_function(function):602    """ Invoke an existing function603        ---604        operationId: 'invokeFunction'605        parameters:606            - name: 'request'607              in: body608    """609    arn = func_arn(function)610    if arn not in arn_to_lambda:611        return error_response('Function does not exist: %s' % arn, 404, error_type='ResourceNotFoundException')612    qualifier = request.args['Qualifier'] if 'Qualifier' in request.args else '$LATEST'613    if not arn_to_lambda.get(arn).qualifier_exists(qualifier):614        return error_response('Function does not exist: {0}:{1}'.format(arn, qualifier), 404,615                              error_type='ResourceNotFoundException')616    lambda_function = arn_to_lambda.get(arn).function(qualifier)617    data = None618    if request.data:619        try:620            data = json.loads(to_str(request.data))621        except Exception:622            return error_response('The payload is not JSON', 415, error_type='UnsupportedMediaTypeException')623    result = run_lambda(lambda_function, func_arn=arn, event=data, context={})624    if isinstance(result, dict):625        return jsonify(result)626    if result:627        return result628    return make_response('', 200)629@app.route('%s/event-source-mappings/' % PATH_ROOT, methods=['GET'])630def list_event_source_mappings():631    """ List event source mappings632        ---633        operationId: 'listEventSourceMappings'634    """635    event_source_arn = request.args.get('EventSourceArn')636    function_name = request.args.get('FunctionName')637    mappings = event_source_mappings638    if event_source_arn:639        mappings = [m for m in mappings if event_source_arn == m.get('EventSourceArn')]640    if function_name:641        function_arn = func_arn(function_name)642        mappings = [m for m in mappings if function_arn == m.get('FunctionArn')]643    response = {644        'EventSourceMappings': mappings645    }646    return jsonify(response)647@app.route('%s/event-source-mappings/' % PATH_ROOT, methods=['POST'])648def create_event_source_mapping():649    """ Create new event source mapping650        ---651        operationId: 'createEventSourceMapping'652        parameters:653            - name: 'request'654              in: body655    """656    data = json.loads(to_str(request.data))657    mapping = add_event_source(data['FunctionName'], data['EventSourceArn'])658    return jsonify(mapping)659@app.route('%s/event-source-mappings/<mapping_uuid>' % PATH_ROOT, methods=['PUT'])660def update_event_source_mapping(mapping_uuid):661    """ Update an existing event source mapping662        ---663        operationId: 'updateEventSourceMapping'664        parameters:665            - name: 'request'666              in: body667    """668    data = json.loads(request.data)669    if not mapping_uuid:670        return jsonify({})671    function_name = data.get('FunctionName') or ''672    enabled = data.get('Enabled') or True673    batch_size = data.get('BatchSize') or 100674    mapping = update_event_source(mapping_uuid, function_name, enabled, batch_size)675    return jsonify(mapping)676@app.route('%s/event-source-mappings/<mapping_uuid>' % PATH_ROOT, methods=['DELETE'])677def delete_event_source_mapping(mapping_uuid):678    """ Delete an event source mapping679        ---680        operationId: 'deleteEventSourceMapping'681    """682    if not mapping_uuid:683        return jsonify({})684    mapping = delete_event_source(mapping_uuid)685    return jsonify(mapping)686@app.route('%s/functions/<function>/versions' % PATH_ROOT, methods=['POST'])687def publish_version(function):688    arn = func_arn(function)689    if arn not in arn_to_lambda:690        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')691    return jsonify(publish_new_function_version(arn))692@app.route('%s/functions/<function>/versions' % PATH_ROOT, methods=['GET'])693def list_versions(function):694    arn = func_arn(function)695    if arn not in arn_to_lambda:696        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')697    return jsonify({'Versions': do_list_versions(arn)})698@app.route('%s/functions/<function>/aliases' % PATH_ROOT, methods=['POST'])699def create_alias(function):700    arn = func_arn(function)701    if arn not in arn_to_lambda:702        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')703    data = json.loads(request.data)704    alias = data.get('Name')705    if alias in arn_to_lambda.get(arn).aliases:706        return error_response('Alias already exists: %s' % arn + ':' + alias, 404,707                              error_type='ResourceConflictException')708    version = data.get('FunctionVersion')709    description = data.get('Description')710    return jsonify(do_update_alias(arn, alias, version, description))711@app.route('%s/functions/<function>/aliases/<name>' % PATH_ROOT, methods=['PUT'])712def update_alias(function, name):713    arn = func_arn(function)714    if arn not in arn_to_lambda:715        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')716    if name not in arn_to_lambda.get(arn).aliases:717        return error_response('Alias not found: %s' % arn + ':' + name, 404,718                              error_type='ResourceNotFoundException')719    current_alias = arn_to_lambda.get(arn).aliases.get(name)720    data = json.loads(request.data)721    version = data.get('FunctionVersion') or current_alias.get('FunctionVersion')722    description = data.get('Description') or current_alias.get('Description')723    return jsonify(do_update_alias(arn, name, version, description))724@app.route('%s/functions/<function>/aliases' % PATH_ROOT, methods=['GET'])725def list_aliases(function):726    arn = func_arn(function)727    if arn not in arn_to_lambda:728        return error_response('Function not found: %s' % arn, 404, error_type='ResourceNotFoundException')729    return jsonify({'Aliases': sorted(arn_to_lambda.get(arn).aliases.values(),730                                      key=lambda x: x['Name'])})731def serve(port, quiet=True):...

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