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apigateway-microservice.py

The following example processes messages from API Gateway, and manages DynamoDB documents based on the request method.

# Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. # # This file is licensed under the Apache License, Version 2.0 (the "License"). # You may not use this file except in compliance with the License. A copy of # the License is located at # # http://aws.amazon.com/apache2.0/ # # This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR # CONDITIONS OF ANY KIND, either express or implied. See the License for the # specific language governing permissions and limitations under the License. import boto3 import json print('Loading function') def handler(event, context): '''Provide an event that contains the following keys: - operation: one of the operations in the operations dict below - tableName: required for operations that interact with DynamoDB - payload: a parameter to pass to the operation being performed ''' #print("Received event: " + json.dumps(event, indent=2)) operation = event['operation'] if 'tableName' in event: dynamo = boto3.resource('dynamodb').Table(event['tableName']) operations = { 'create': lambda x: dynamo.put_item(**x), 'read': lambda x: dynamo.get_item(**x), 'update': lambda x: dynamo.update_item(**x), 'delete': lambda x: dynamo.delete_item(**x), 'list': lambda x: dynamo.scan(**x), 'echo': lambda x: x, 'ping': lambda x: 'pong' } if operation in operations: return operations[operation](event.get('payload')) else: raise ValueError('Unrecognized operation "{}"'.format(operation))

Sample Details

Service: Lambda

Last tested: 2019-01-30

Author: AWS

Type: full-example

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