com.images3.data.impl.AmazonS3ClientPool.java Source code

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Here is the source code for com.images3.data.impl.AmazonS3ClientPool.java

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/*******************************************************************************
 * Copyright 2014 Rui Sun
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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.images3.data.impl;

import java.util.HashMap;
import java.util.Map;

import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.images3.common.AmazonS3Bucket;

public class AmazonS3ClientPool {

    private static Map<String, AmazonS3> pool = new HashMap<String, AmazonS3>(); //<accessKey_secretKey, AmazonS3>

    public AmazonS3ClientPool() {
    }

    private String generateKey(String accessKey, String secretKey) {
        return (accessKey + "_" + secretKey);
    }

    public AmazonS3 getClient(AmazonS3Bucket bucket) {
        String key = generateKey(bucket.getAccessKey(), bucket.getSecretKey());
        AmazonS3 client = pool.get(key);
        if (null == client) {
            client = createAmazonS3Client(bucket.getAccessKey(), bucket.getSecretKey());
            pool.put(key, client);
        }
        return client;
    }

    private AmazonS3 createAmazonS3Client(String accessKey, String secretKey) {
        return new AmazonS3Client(new BasicAWSCredentials(accessKey, secretKey));
    }

}