com.boundary.aws.sqs.Sample.java Source code

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Here is the source code for com.boundary.aws.sqs.Sample.java

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/* Copyright 2010-2014 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.boundary.aws.sqs;

import java.util.Date;
import java.util.List;
import java.util.Map.Entry;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.sqs.AmazonSQS;
import com.amazonaws.services.sqs.AmazonSQSClient;
import com.amazonaws.services.sqs.model.CreateQueueRequest;
import com.amazonaws.services.sqs.model.DeleteMessageRequest;
import com.amazonaws.services.sqs.model.DeleteQueueRequest;
import com.amazonaws.services.sqs.model.Message;
import com.amazonaws.services.sqs.model.ReceiveMessageRequest;
import com.amazonaws.services.sqs.model.SendMessageRequest;

/**
 * This sample demonstrates how to make basic requests to Amazon SQS using the
 * AWS SDK for Java.
 * <p>
 * <b>Prerequisites:</b> You must have a valid Amazon Web Services developer
 * account, and be signed up to use Amazon SQS. For more information on Amazon
 * SQS, see http://aws.amazon.com/sqs.
 * <p>
 * WANRNING:</b> To avoid accidental leakage of your credentials, DO NOT keep
 * the credentials file in your source directory.
 */
public class Sample {

    public static void main(String[] args) throws Exception {
        String queueName = "boundary-sqs-demo-queue";

        /*
         * The ProfileCredentialsProvider will return your [default] credential
         * profile by reading from the credentials file located at
         * (HOME/.aws/credentials).
         */
        AWSCredentials credentials = null;
        try {
            credentials = new ProfileCredentialsProvider("default").getCredentials();
        } catch (Exception e) {
            throw new AmazonClientException("Cannot load the credentials from the credential profiles file. ", e);
        }

        AmazonSQS sqs = new AmazonSQSClient(credentials);
        Region usWest2 = Region.getRegion(Regions.US_WEST_2);
        sqs.setRegion(usWest2);

        try {
            // Create a queue
            System.out.printf("Creating queue: %s.\n", queueName);
            CreateQueueRequest createQueueRequest = new CreateQueueRequest(queueName);
            String myQueueUrl = sqs.createQueue(createQueueRequest).getQueueUrl();

            int messageCount = 100;

            // Send a messages
            for (int count = 1; count <= messageCount; count++) {
                System.out.printf("Sending message %3d to %s.\n", count, queueName);
                sqs.sendMessage(new SendMessageRequest(myQueueUrl, new Date() + ": This is my message text."));
            }

            for (int count = 1; count <= messageCount; count++) {

                ReceiveMessageRequest receiveMessageRequest = new ReceiveMessageRequest(myQueueUrl);
                List<Message> messages = sqs.receiveMessage(receiveMessageRequest).getMessages();
                for (Message msg : messages) {
                    System.out.printf("Received message: %s queue: %s body: %s\n", msg.getMessageId(), queueName,
                            msg.getBody());
                    System.out.printf("Deleting message: %s queue: %s\n", msg.getMessageId(), queueName);
                    String messageRecieptHandle = msg.getReceiptHandle();
                    sqs.deleteMessage(new DeleteMessageRequest(myQueueUrl, messageRecieptHandle));
                }
            }

            System.out.printf("Deleting queue: %s\n", queueName);
            sqs.deleteQueue(new DeleteQueueRequest(myQueueUrl));

        } catch (AmazonServiceException ase) {
            System.out.println("Caught an AmazonServiceException, which means your request made it "
                    + "to Amazon SQS, but was rejected with an error response for some reason.");
            System.out.println("Error Message:    " + ase.getMessage());
            System.out.println("HTTP Status Code: " + ase.getStatusCode());
            System.out.println("AWS Error Code:   " + ase.getErrorCode());
            System.out.println("Error Type:       " + ase.getErrorType());
            System.out.println("Request ID:       " + ase.getRequestId());
        } catch (AmazonClientException ace) {
            System.out.println("Caught an AmazonClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with SQS, such as not "
                    + "being able to access the network.");
            System.out.println("Error Message: " + ace.getMessage());
        }

        sqs.shutdown();
    }
}