com.serverless.manager.DynamoDBManager.java Source code

Introduction

Here is the source code for com.serverless.manager.DynamoDBManager.java

Source

// Copyright 2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// 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/
//
// or in the "license" file accompanying this file. 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.

package com.serverless.manager;

import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;

public class DynamoDBManager {

    private static volatile DynamoDBManager instance;

    private static DynamoDBMapper mapper;

    private DynamoDBManager() {

        AmazonDynamoDBClient client = new AmazonDynamoDBClient();
        client.setRegion(Region.getRegion(Regions.US_WEST_1));
        mapper = new DynamoDBMapper(client);
    }

    public static DynamoDBManager instance() {

        if (instance == null) {
            synchronized (DynamoDBManager.class) {
                if (instance == null)
                    instance = new DynamoDBManager();
            }
        }

        return instance;
    }

    public static DynamoDBMapper mapper() {

        DynamoDBManager manager = instance();
        return manager.mapper;
    }

}