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The Amazon Web Services SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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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.amazonaws.services.sqs;

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.handlers.AsyncHandler;
import com.amazonaws.ClientConfiguration;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;

import com.amazonaws.services.sqs.model.*;

/**
 * Asynchronous client for accessing AmazonSQS.
 * All asynchronous calls made using this client are non-blocking. Callers could either
 * process the result and handle the exceptions in the worker thread by providing a callback handler
 * when making the call, or use the returned Future object to check the result of the call in the calling thread.
 * Amazon Simple Queue Service 

* Welcome to the Amazon Simple Queue Service API Reference . This * section describes who should read this guide, how the guide is * organized, and other resources related to the Amazon Simple Queue * Service (Amazon SQS). *

*

* Amazon SQS offers reliable and scalable hosted queues for storing * messages as they travel between computers. By using Amazon SQS, you * can move data between distributed components of your applications that * perform different tasks without losing messages or requiring each * component to be always available. *

*

* Helpful Links: *

* *

*

* We also provide SDKs that enable you to access Amazon SQS from your * preferred programming language. The SDKs contain functionality that * automatically takes care of tasks such as: *

*

* *

    *
  • Cryptographically signing your service requests
  • *
  • Retrying requests
  • *
  • Handling error responses
  • * *
* *

*

* For a list of available SDKs, go to * Tools for Amazon Web Services * . *

*/ public class AmazonSQSAsyncClient extends AmazonSQSClient implements AmazonSQSAsync { /** * Executor service for executing asynchronous requests. */ private ExecutorService executorService; private static final int DEFAULT_THREAD_POOL_SIZE = 50; /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS. A credentials provider chain will be used * that searches for credentials in this order: *
    *
  • Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
  • *
  • Java System Properties - aws.accessKeyId and aws.secretKey
  • *
  • Instance profile credentials delivered through the Amazon EC2 metadata service
  • *
* *

* All service calls made using this new client object are blocking, and will not * return until the service call completes. * * @see DefaultAWSCredentialsProviderChain */ public AmazonSQSAsyncClient() { this(new DefaultAWSCredentialsProviderChain()); } /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS. A credentials provider chain will be used * that searches for credentials in this order: *

    *
  • Environment Variables - AWS_ACCESS_KEY_ID and AWS_SECRET_KEY
  • *
  • Java System Properties - aws.accessKeyId and aws.secretKey
  • *
  • Instance profile credentials delivered through the Amazon EC2 metadata service
  • *
* *

* All service calls made using this new client object are blocking, and will not * return until the service call completes. * * @param clientConfiguration The client configuration options controlling how this * client connects to AmazonSQS * (ex: proxy settings, retry counts, etc.). * * @see DefaultAWSCredentialsProviderChain */ public AmazonSQSAsyncClient(ClientConfiguration clientConfiguration) { this(new DefaultAWSCredentialsProviderChain(), clientConfiguration, Executors.newFixedThreadPool(clientConfiguration.getMaxConnections())); } /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS using the specified AWS account credentials. * Default client settings will be used, and a fixed size thread pool will be * created for executing the asynchronous tasks. * *

* All calls made using this new client object are non-blocking, and will immediately * return a Java Future object that the caller can later check to see if the service * call has actually completed. * * @param awsCredentials The AWS credentials (access key ID and secret key) to use * when authenticating with AWS services. */ public AmazonSQSAsyncClient(AWSCredentials awsCredentials) { this(awsCredentials, Executors.newFixedThreadPool(DEFAULT_THREAD_POOL_SIZE)); } /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS using the specified AWS account credentials * and executor service. Default client settings will be used. * *

* All calls made using this new client object are non-blocking, and will immediately * return a Java Future object that the caller can later check to see if the service * call has actually completed. * * @param awsCredentials * The AWS credentials (access key ID and secret key) to use * when authenticating with AWS services. * @param executorService * The executor service by which all asynchronous requests will * be executed. */ public AmazonSQSAsyncClient(AWSCredentials awsCredentials, ExecutorService executorService) { super(awsCredentials); this.executorService = executorService; } /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS using the specified AWS account credentials, * executor service, and client configuration options. * *

* All calls made using this new client object are non-blocking, and will immediately * return a Java Future object that the caller can later check to see if the service * call has actually completed. * * @param awsCredentials * The AWS credentials (access key ID and secret key) to use * when authenticating with AWS services. * @param clientConfiguration * Client configuration options (ex: max retry limit, proxy * settings, etc). * @param executorService * The executor service by which all asynchronous requests will * be executed. */ public AmazonSQSAsyncClient(AWSCredentials awsCredentials, ClientConfiguration clientConfiguration, ExecutorService executorService) { super(awsCredentials, clientConfiguration); this.executorService = executorService; } /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS using the specified AWS account credentials provider. * Default client settings will be used, and a fixed size thread pool will be * created for executing the asynchronous tasks. * *

* All calls made using this new client object are non-blocking, and will immediately * return a Java Future object that the caller can later check to see if the service * call has actually completed. * * @param awsCredentialsProvider * The AWS credentials provider which will provide credentials * to authenticate requests with AWS services. */ public AmazonSQSAsyncClient(AWSCredentialsProvider awsCredentialsProvider) { this(awsCredentialsProvider, Executors.newFixedThreadPool(DEFAULT_THREAD_POOL_SIZE)); } /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS using the specified AWS account credentials provider * and executor service. Default client settings will be used. * *

* All calls made using this new client object are non-blocking, and will immediately * return a Java Future object that the caller can later check to see if the service * call has actually completed. * * @param awsCredentialsProvider * The AWS credentials provider which will provide credentials * to authenticate requests with AWS services. * @param executorService * The executor service by which all asynchronous requests will * be executed. */ public AmazonSQSAsyncClient(AWSCredentialsProvider awsCredentialsProvider, ExecutorService executorService) { this(awsCredentialsProvider, new ClientConfiguration(), executorService); } /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS using the specified AWS account credentials * provider and client configuration options. * *

* All calls made using this new client object are non-blocking, and will immediately * return a Java Future object that the caller can later check to see if the service * call has actually completed. * * @param awsCredentialsProvider * The AWS credentials provider which will provide credentials * to authenticate requests with AWS services. * @param clientConfiguration * Client configuration options (ex: max retry limit, proxy * settings, etc). */ public AmazonSQSAsyncClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration) { this(awsCredentialsProvider, clientConfiguration, Executors.newFixedThreadPool(clientConfiguration.getMaxConnections())); } /** * Constructs a new asynchronous client to invoke service methods on * AmazonSQS using the specified AWS account credentials * provider, executor service, and client configuration options. * *

* All calls made using this new client object are non-blocking, and will immediately * return a Java Future object that the caller can later check to see if the service * call has actually completed. * * @param awsCredentialsProvider * The AWS credentials provider which will provide credentials * to authenticate requests with AWS services. * @param clientConfiguration * Client configuration options (ex: max retry limit, proxy * settings, etc). * @param executorService * The executor service by which all asynchronous requests will * be executed. */ public AmazonSQSAsyncClient(AWSCredentialsProvider awsCredentialsProvider, ClientConfiguration clientConfiguration, ExecutorService executorService) { super(awsCredentialsProvider, clientConfiguration); this.executorService = executorService; } /** * Returns the executor service used by this async client to execute * requests. * * @return The executor service used by this async client to execute * requests. */ public ExecutorService getExecutorService() { return executorService; } /** * Shuts down the client, releasing all managed resources. This includes * forcibly terminating all pending asynchronous service calls. Clients who * wish to give pending asynchronous service calls time to complete should * call getExecutorService().shutdown() followed by * getExecutorService().awaitTermination() prior to calling this method. */ @Override public void shutdown() { super.shutdown(); executorService.shutdownNow(); } /** *

* Sets the value of one or more queue attributes. *

*

* NOTE:Going forward, new attributes might be added. If you are * writing code that calls this action, we recommend that you structure * your code so that it can handle new attributes gracefully. *

* * @param setQueueAttributesRequest Container for the necessary * parameters to execute the SetQueueAttributes operation on AmazonSQS. * * @return A Java Future object containing the response from the * SetQueueAttributes service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future setQueueAttributesAsync(final SetQueueAttributesRequest setQueueAttributesRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { setQueueAttributes(setQueueAttributesRequest); return null; } }); } /** *

* Sets the value of one or more queue attributes. *

*

* NOTE:Going forward, new attributes might be added. If you are * writing code that calls this action, we recommend that you structure * your code so that it can handle new attributes gracefully. *

* * @param setQueueAttributesRequest Container for the necessary * parameters to execute the SetQueueAttributes operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * SetQueueAttributes service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future setQueueAttributesAsync( final SetQueueAttributesRequest setQueueAttributesRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { try { setQueueAttributes(setQueueAttributesRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(setQueueAttributesRequest, null); return null; } }); } /** *

* Changes the visibility timeout of multiple messages. This is a batch * version of ChangeMessageVisibility. The result of the action on each * message is reported individually in the response. You can send up to * 10 ChangeMessageVisibility requests with each * ChangeMessageVisibilityBatch action. *

*

* IMPORTANT:Because the batch request can result in a combination * of successful and unsuccessful actions, you should check for batch * errors even when the call returns an HTTP status code of 200. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param changeMessageVisibilityBatchRequest Container for the necessary * parameters to execute the ChangeMessageVisibilityBatch operation on * AmazonSQS. * * @return A Java Future object containing the response from the * ChangeMessageVisibilityBatch service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future changeMessageVisibilityBatchAsync(final ChangeMessageVisibilityBatchRequest changeMessageVisibilityBatchRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public ChangeMessageVisibilityBatchResult call() throws Exception { return changeMessageVisibilityBatch(changeMessageVisibilityBatchRequest); } }); } /** *

* Changes the visibility timeout of multiple messages. This is a batch * version of ChangeMessageVisibility. The result of the action on each * message is reported individually in the response. You can send up to * 10 ChangeMessageVisibility requests with each * ChangeMessageVisibilityBatch action. *

*

* IMPORTANT:Because the batch request can result in a combination * of successful and unsuccessful actions, you should check for batch * errors even when the call returns an HTTP status code of 200. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param changeMessageVisibilityBatchRequest Container for the necessary * parameters to execute the ChangeMessageVisibilityBatch operation on * AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * ChangeMessageVisibilityBatch service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future changeMessageVisibilityBatchAsync( final ChangeMessageVisibilityBatchRequest changeMessageVisibilityBatchRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public ChangeMessageVisibilityBatchResult call() throws Exception { ChangeMessageVisibilityBatchResult result; try { result = changeMessageVisibilityBatch(changeMessageVisibilityBatchRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(changeMessageVisibilityBatchRequest, result); return result; } }); } /** *

* Changes the visibility timeout of a specified message in a queue to a * new value. The maximum allowed timeout value you can set the value to * is 12 hours. This means you can't extend the timeout of a message in * an existing queue to more than a total visibility timeout of 12 hours. * (For more information visibility timeout, see * Visibility Timeout * in the Amazon SQS Developer Guide .) *

*

* For example, let's say you have a message and its default message * visibility timeout is 30 minutes. You could call * ChangeMessageVisiblity with a value of two hours and the * effective timeout would be two hours and 30 minutes. When that time * comes near you could again extend the time out by calling * ChangeMessageVisiblity, but this time the maximum allowed timeout * would be 9 hours and 30 minutes. *

*

* IMPORTANT:If you attempt to set the VisibilityTimeout to an * amount more than the maximum time left, Amazon SQS returns an error. * It will not automatically recalculate and increase the timeout to the * maximum time remaining. *

*

* IMPORTANT:Unlike with a queue, when you change the visibility * timeout for a specific message, that timeout value is applied * immediately but is not saved in memory for that message. If you don't * delete a message after it is received, the visibility timeout for the * message the next time it is received reverts to the original timeout * value, not the value you set with the ChangeMessageVisibility action. *

* * @param changeMessageVisibilityRequest Container for the necessary * parameters to execute the ChangeMessageVisibility operation on * AmazonSQS. * * @return A Java Future object containing the response from the * ChangeMessageVisibility service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future changeMessageVisibilityAsync(final ChangeMessageVisibilityRequest changeMessageVisibilityRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { changeMessageVisibility(changeMessageVisibilityRequest); return null; } }); } /** *

* Changes the visibility timeout of a specified message in a queue to a * new value. The maximum allowed timeout value you can set the value to * is 12 hours. This means you can't extend the timeout of a message in * an existing queue to more than a total visibility timeout of 12 hours. * (For more information visibility timeout, see * Visibility Timeout * in the Amazon SQS Developer Guide .) *

*

* For example, let's say you have a message and its default message * visibility timeout is 30 minutes. You could call * ChangeMessageVisiblity with a value of two hours and the * effective timeout would be two hours and 30 minutes. When that time * comes near you could again extend the time out by calling * ChangeMessageVisiblity, but this time the maximum allowed timeout * would be 9 hours and 30 minutes. *

*

* IMPORTANT:If you attempt to set the VisibilityTimeout to an * amount more than the maximum time left, Amazon SQS returns an error. * It will not automatically recalculate and increase the timeout to the * maximum time remaining. *

*

* IMPORTANT:Unlike with a queue, when you change the visibility * timeout for a specific message, that timeout value is applied * immediately but is not saved in memory for that message. If you don't * delete a message after it is received, the visibility timeout for the * message the next time it is received reverts to the original timeout * value, not the value you set with the ChangeMessageVisibility action. *

* * @param changeMessageVisibilityRequest Container for the necessary * parameters to execute the ChangeMessageVisibility operation on * AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * ChangeMessageVisibility service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future changeMessageVisibilityAsync( final ChangeMessageVisibilityRequest changeMessageVisibilityRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { try { changeMessageVisibility(changeMessageVisibilityRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(changeMessageVisibilityRequest, null); return null; } }); } /** *

* Returns the URL of an existing queue. This action provides a simple * way to retrieve the URL of an Amazon SQS queue. *

*

* To access a queue that belongs to another AWS account, use the * QueueOwnerAWSAccountId parameter to specify the account * ID of the queue's owner. The queue's owner must grant you permission * to access the queue. For more information about shared queue access, * see AddPermission or go to * Shared Queues * in the Amazon SQS Developer Guide . * *

* * @param getQueueUrlRequest Container for the necessary parameters to * execute the GetQueueUrl operation on AmazonSQS. * * @return A Java Future object containing the response from the * GetQueueUrl service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future getQueueUrlAsync(final GetQueueUrlRequest getQueueUrlRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public GetQueueUrlResult call() throws Exception { return getQueueUrl(getQueueUrlRequest); } }); } /** *

* Returns the URL of an existing queue. This action provides a simple * way to retrieve the URL of an Amazon SQS queue. *

*

* To access a queue that belongs to another AWS account, use the * QueueOwnerAWSAccountId parameter to specify the account * ID of the queue's owner. The queue's owner must grant you permission * to access the queue. For more information about shared queue access, * see AddPermission or go to * Shared Queues * in the Amazon SQS Developer Guide . * *

* * @param getQueueUrlRequest Container for the necessary parameters to * execute the GetQueueUrl operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * GetQueueUrl service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future getQueueUrlAsync( final GetQueueUrlRequest getQueueUrlRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public GetQueueUrlResult call() throws Exception { GetQueueUrlResult result; try { result = getQueueUrl(getQueueUrlRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(getQueueUrlRequest, result); return result; } }); } /** *

* Revokes any permissions in the queue policy that matches the specified * Label parameter. Only the owner of the queue can remove * permissions. *

* * @param removePermissionRequest Container for the necessary parameters * to execute the RemovePermission operation on AmazonSQS. * * @return A Java Future object containing the response from the * RemovePermission service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future removePermissionAsync(final RemovePermissionRequest removePermissionRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { removePermission(removePermissionRequest); return null; } }); } /** *

* Revokes any permissions in the queue policy that matches the specified * Label parameter. Only the owner of the queue can remove * permissions. *

* * @param removePermissionRequest Container for the necessary parameters * to execute the RemovePermission operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * RemovePermission service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future removePermissionAsync( final RemovePermissionRequest removePermissionRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { try { removePermission(removePermissionRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(removePermissionRequest, null); return null; } }); } /** *

* Gets attributes for the specified queue. The following attributes are * supported: *

    *
  • All - returns all values.
  • *
  • ApproximateNumberOfMessages - returns the * approximate number of visible messages in a queue. For more * information, see * Resources Required to Process Messages * in the Amazon SQS Developer Guide .
  • *
  • ApproximateNumberOfMessagesNotVisible - returns the * approximate number of messages that are not timed-out and not deleted. * For more information, see * Resources Required to Process Messages * in the Amazon SQS Developer Guide .
  • *
  • VisibilityTimeout - returns the visibility timeout * for the queue. For more information about visibility timeout, see * Visibility Timeout * in the Amazon SQS Developer Guide .
  • *
  • CreatedTimestamp - returns the time when the queue * was created (epoch time in seconds).
  • *
  • LastModifiedTimestamp - returns the time when the * queue was last changed (epoch time in seconds).
  • *
  • Policy - returns the queue's policy.
  • *
  • MaximumMessageSize - returns the limit of how many * bytes a message can contain before Amazon SQS rejects it.
  • *
  • MessageRetentionPeriod - returns the number of * seconds Amazon SQS retains a message.
  • *
  • QueueArn - returns the queue's Amazon resource name * (ARN).
  • *
  • ApproximateNumberOfMessagesDelayed - returns the * approximate number of messages that are pending to be added to the * queue.
  • *
  • DelaySeconds - returns the default delay on the * queue in seconds.
  • *
  • ReceiveMessageWaitTimeSeconds - returns the time * for which a ReceiveMessage call will wait for a message to * arrive.
  • *
  • RedrivePolicy - returns the parameters for dead * letter queue functionality of the source queue. For more information * about RedrivePolicy and dead letter queues, see * Using Amazon SQS Dead Letter Queues * in the Amazon SQS Developer Guide .
  • * *
* *

*

* NOTE:Going forward, new attributes might be added. If you are * writing code that calls this action, we recommend that you structure * your code so that it can handle new attributes gracefully. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param getQueueAttributesRequest Container for the necessary * parameters to execute the GetQueueAttributes operation on AmazonSQS. * * @return A Java Future object containing the response from the * GetQueueAttributes service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future getQueueAttributesAsync(final GetQueueAttributesRequest getQueueAttributesRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public GetQueueAttributesResult call() throws Exception { return getQueueAttributes(getQueueAttributesRequest); } }); } /** *

* Gets attributes for the specified queue. The following attributes are * supported: *

    *
  • All - returns all values.
  • *
  • ApproximateNumberOfMessages - returns the * approximate number of visible messages in a queue. For more * information, see * Resources Required to Process Messages * in the Amazon SQS Developer Guide .
  • *
  • ApproximateNumberOfMessagesNotVisible - returns the * approximate number of messages that are not timed-out and not deleted. * For more information, see * Resources Required to Process Messages * in the Amazon SQS Developer Guide .
  • *
  • VisibilityTimeout - returns the visibility timeout * for the queue. For more information about visibility timeout, see * Visibility Timeout * in the Amazon SQS Developer Guide .
  • *
  • CreatedTimestamp - returns the time when the queue * was created (epoch time in seconds).
  • *
  • LastModifiedTimestamp - returns the time when the * queue was last changed (epoch time in seconds).
  • *
  • Policy - returns the queue's policy.
  • *
  • MaximumMessageSize - returns the limit of how many * bytes a message can contain before Amazon SQS rejects it.
  • *
  • MessageRetentionPeriod - returns the number of * seconds Amazon SQS retains a message.
  • *
  • QueueArn - returns the queue's Amazon resource name * (ARN).
  • *
  • ApproximateNumberOfMessagesDelayed - returns the * approximate number of messages that are pending to be added to the * queue.
  • *
  • DelaySeconds - returns the default delay on the * queue in seconds.
  • *
  • ReceiveMessageWaitTimeSeconds - returns the time * for which a ReceiveMessage call will wait for a message to * arrive.
  • *
  • RedrivePolicy - returns the parameters for dead * letter queue functionality of the source queue. For more information * about RedrivePolicy and dead letter queues, see * Using Amazon SQS Dead Letter Queues * in the Amazon SQS Developer Guide .
  • * *
* *

*

* NOTE:Going forward, new attributes might be added. If you are * writing code that calls this action, we recommend that you structure * your code so that it can handle new attributes gracefully. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param getQueueAttributesRequest Container for the necessary * parameters to execute the GetQueueAttributes operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * GetQueueAttributes service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future getQueueAttributesAsync( final GetQueueAttributesRequest getQueueAttributesRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public GetQueueAttributesResult call() throws Exception { GetQueueAttributesResult result; try { result = getQueueAttributes(getQueueAttributesRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(getQueueAttributesRequest, result); return result; } }); } /** *

* Delivers up to ten messages to the specified queue. This is a batch * version of SendMessage. The result of the send action on each message * is reported individually in the response. The maximum allowed * individual message size is 256 KB (262,144 bytes). *

*

* The maximum total payload size (i.e., the sum of all a batch's * individual message lengths) is also 256 KB (262,144 bytes). *

*

* If the DelaySeconds parameter is not specified for an * entry, the default for the queue is used. *

*

* IMPORTANT:The following list shows the characters (in Unicode) * that are allowed in your message, according to the W3C XML * specification. For more information, go to * http://www.faqs.org/rfcs/rfc1321.html. If you send any characters that * are not included in the list, your request will be rejected. #x9 | #xA * | #xD | [#x20 to #xD7FF] | [#xE000 to #xFFFD] | [#x10000 to #x10FFFF] *

*

* IMPORTANT: Because the batch request can result in a * combination of successful and unsuccessful actions, you should check * for batch errors even when the call returns an HTTP status code of * 200. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param sendMessageBatchRequest Container for the necessary parameters * to execute the SendMessageBatch operation on AmazonSQS. * * @return A Java Future object containing the response from the * SendMessageBatch service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future sendMessageBatchAsync(final SendMessageBatchRequest sendMessageBatchRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public SendMessageBatchResult call() throws Exception { return sendMessageBatch(sendMessageBatchRequest); } }); } /** *

* Delivers up to ten messages to the specified queue. This is a batch * version of SendMessage. The result of the send action on each message * is reported individually in the response. The maximum allowed * individual message size is 256 KB (262,144 bytes). *

*

* The maximum total payload size (i.e., the sum of all a batch's * individual message lengths) is also 256 KB (262,144 bytes). *

*

* If the DelaySeconds parameter is not specified for an * entry, the default for the queue is used. *

*

* IMPORTANT:The following list shows the characters (in Unicode) * that are allowed in your message, according to the W3C XML * specification. For more information, go to * http://www.faqs.org/rfcs/rfc1321.html. If you send any characters that * are not included in the list, your request will be rejected. #x9 | #xA * | #xD | [#x20 to #xD7FF] | [#xE000 to #xFFFD] | [#x10000 to #x10FFFF] *

*

* IMPORTANT: Because the batch request can result in a * combination of successful and unsuccessful actions, you should check * for batch errors even when the call returns an HTTP status code of * 200. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param sendMessageBatchRequest Container for the necessary parameters * to execute the SendMessageBatch operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * SendMessageBatch service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future sendMessageBatchAsync( final SendMessageBatchRequest sendMessageBatchRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public SendMessageBatchResult call() throws Exception { SendMessageBatchResult result; try { result = sendMessageBatch(sendMessageBatchRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(sendMessageBatchRequest, result); return result; } }); } /** *

* Returns a list of your queues that have the RedrivePolicy queue * attribute configured with a dead letter queue. *

* * @param listDeadLetterSourceQueuesRequest Container for the necessary * parameters to execute the ListDeadLetterSourceQueues operation on * AmazonSQS. * * @return A Java Future object containing the response from the * ListDeadLetterSourceQueues service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future listDeadLetterSourceQueuesAsync(final ListDeadLetterSourceQueuesRequest listDeadLetterSourceQueuesRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public ListDeadLetterSourceQueuesResult call() throws Exception { return listDeadLetterSourceQueues(listDeadLetterSourceQueuesRequest); } }); } /** *

* Returns a list of your queues that have the RedrivePolicy queue * attribute configured with a dead letter queue. *

* * @param listDeadLetterSourceQueuesRequest Container for the necessary * parameters to execute the ListDeadLetterSourceQueues operation on * AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * ListDeadLetterSourceQueues service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future listDeadLetterSourceQueuesAsync( final ListDeadLetterSourceQueuesRequest listDeadLetterSourceQueuesRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public ListDeadLetterSourceQueuesResult call() throws Exception { ListDeadLetterSourceQueuesResult result; try { result = listDeadLetterSourceQueues(listDeadLetterSourceQueuesRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(listDeadLetterSourceQueuesRequest, result); return result; } }); } /** *

* Deletes the queue specified by the queue URL , regardless of * whether the queue is empty. If the specified queue does not exist, * Amazon SQS returns a successful response. *

*

* IMPORTANT: Use DeleteQueue with care; once you delete your * queue, any messages in the queue are no longer available. *

*

* When you delete a queue, the deletion process takes up to 60 seconds. * Requests you send involving that queue during the 60 seconds might * succeed. For example, a SendMessage request might succeed, but after * the 60 seconds, the queue and that message you sent no longer exist. * Also, when you delete a queue, you must wait at least 60 seconds * before creating a queue with the same name. *

*

* We reserve the right to delete queues that have had no activity for * more than 30 days. For more information, see * How Amazon SQS Queues Work * in the Amazon SQS Developer Guide . * *

* * @param deleteQueueRequest Container for the necessary parameters to * execute the DeleteQueue operation on AmazonSQS. * * @return A Java Future object containing the response from the * DeleteQueue service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future deleteQueueAsync(final DeleteQueueRequest deleteQueueRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { deleteQueue(deleteQueueRequest); return null; } }); } /** *

* Deletes the queue specified by the queue URL , regardless of * whether the queue is empty. If the specified queue does not exist, * Amazon SQS returns a successful response. *

*

* IMPORTANT: Use DeleteQueue with care; once you delete your * queue, any messages in the queue are no longer available. *

*

* When you delete a queue, the deletion process takes up to 60 seconds. * Requests you send involving that queue during the 60 seconds might * succeed. For example, a SendMessage request might succeed, but after * the 60 seconds, the queue and that message you sent no longer exist. * Also, when you delete a queue, you must wait at least 60 seconds * before creating a queue with the same name. *

*

* We reserve the right to delete queues that have had no activity for * more than 30 days. For more information, see * How Amazon SQS Queues Work * in the Amazon SQS Developer Guide . * *

* * @param deleteQueueRequest Container for the necessary parameters to * execute the DeleteQueue operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * DeleteQueue service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future deleteQueueAsync( final DeleteQueueRequest deleteQueueRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { try { deleteQueue(deleteQueueRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(deleteQueueRequest, null); return null; } }); } /** *

* Delivers a message to the specified queue. With Amazon SQS, you now * have the ability to send large payload messages that are up to 256KB * (262,144 bytes) in size. To send large payloads, you must use an AWS * SDK that supports SigV4 signing. To verify whether SigV4 is supported * for an AWS SDK, check the SDK release notes. *

*

* IMPORTANT: The following list shows the characters (in Unicode) * allowed in your message, according to the W3C XML specification. For * more information, go to http://www.w3.org/TR/REC-xml/#charsets If you * send any characters not included in the list, your request will be * rejected. #x9 | #xA | #xD | [#x20 to #xD7FF] | [#xE000 to #xFFFD] | * [#x10000 to #x10FFFF] *

* * @param sendMessageRequest Container for the necessary parameters to * execute the SendMessage operation on AmazonSQS. * * @return A Java Future object containing the response from the * SendMessage service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future sendMessageAsync(final SendMessageRequest sendMessageRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public SendMessageResult call() throws Exception { return sendMessage(sendMessageRequest); } }); } /** *

* Delivers a message to the specified queue. With Amazon SQS, you now * have the ability to send large payload messages that are up to 256KB * (262,144 bytes) in size. To send large payloads, you must use an AWS * SDK that supports SigV4 signing. To verify whether SigV4 is supported * for an AWS SDK, check the SDK release notes. *

*

* IMPORTANT: The following list shows the characters (in Unicode) * allowed in your message, according to the W3C XML specification. For * more information, go to http://www.w3.org/TR/REC-xml/#charsets If you * send any characters not included in the list, your request will be * rejected. #x9 | #xA | #xD | [#x20 to #xD7FF] | [#xE000 to #xFFFD] | * [#x10000 to #x10FFFF] *

* * @param sendMessageRequest Container for the necessary parameters to * execute the SendMessage operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * SendMessage service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future sendMessageAsync( final SendMessageRequest sendMessageRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public SendMessageResult call() throws Exception { SendMessageResult result; try { result = sendMessage(sendMessageRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(sendMessageRequest, result); return result; } }); } /** *

* Retrieves one or more messages from the specified queue. Long poll * support is enabled by using the WaitTimeSeconds * parameter. For more information, see * Amazon SQS Long Poll * in the Amazon SQS Developer Guide . * *

*

* Short poll is the default behavior where a weighted random set of * machines is sampled on a ReceiveMessage call. This means * only the messages on the sampled machines are returned. If the number * of messages in the queue is small (less than 1000), it is likely you * will get fewer messages than you requested per * ReceiveMessage call. If the number of messages in the * queue is extremely small, you might not receive any messages in a * particular ReceiveMessage response; in which case you * should repeat the request. *

*

* For each message returned, the response includes the following: *

* *
    *
  • * Message body *

    *
  • *
  • * MD5 digest of the message body. For information about MD5, go to * http://www.faqs.org/rfcs/rfc1321.html * . *

    *
  • *
  • * Message ID you received when you sent the message to the queue. *

    *
  • *
  • * Receipt handle. *

    *
  • * *
*

* The receipt handle is the identifier you must provide when deleting * the message. For more information, see * Queue and Message Identifiers * in the Amazon SQS Developer Guide . * *

*

* You can provide the VisibilityTimeout parameter in your * request, which will be applied to the messages that Amazon SQS returns * in the response. If you do not include the parameter, the overall * visibility timeout for the queue is used for the returned messages. * For more information, see * Visibility Timeout * in the Amazon SQS Developer Guide . * *

*

* NOTE: Going forward, new attributes might be added. If you are * writing code that calls this action, we recommend that you structure * your code so that it can handle new attributes gracefully. *

* * @param receiveMessageRequest Container for the necessary parameters to * execute the ReceiveMessage operation on AmazonSQS. * * @return A Java Future object containing the response from the * ReceiveMessage service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future receiveMessageAsync(final ReceiveMessageRequest receiveMessageRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public ReceiveMessageResult call() throws Exception { return receiveMessage(receiveMessageRequest); } }); } /** *

* Retrieves one or more messages from the specified queue. Long poll * support is enabled by using the WaitTimeSeconds * parameter. For more information, see * Amazon SQS Long Poll * in the Amazon SQS Developer Guide . * *

*

* Short poll is the default behavior where a weighted random set of * machines is sampled on a ReceiveMessage call. This means * only the messages on the sampled machines are returned. If the number * of messages in the queue is small (less than 1000), it is likely you * will get fewer messages than you requested per * ReceiveMessage call. If the number of messages in the * queue is extremely small, you might not receive any messages in a * particular ReceiveMessage response; in which case you * should repeat the request. *

*

* For each message returned, the response includes the following: *

* *
    *
  • * Message body *

    *
  • *
  • * MD5 digest of the message body. For information about MD5, go to * http://www.faqs.org/rfcs/rfc1321.html * . *

    *
  • *
  • * Message ID you received when you sent the message to the queue. *

    *
  • *
  • * Receipt handle. *

    *
  • * *
*

* The receipt handle is the identifier you must provide when deleting * the message. For more information, see * Queue and Message Identifiers * in the Amazon SQS Developer Guide . * *

*

* You can provide the VisibilityTimeout parameter in your * request, which will be applied to the messages that Amazon SQS returns * in the response. If you do not include the parameter, the overall * visibility timeout for the queue is used for the returned messages. * For more information, see * Visibility Timeout * in the Amazon SQS Developer Guide . * *

*

* NOTE: Going forward, new attributes might be added. If you are * writing code that calls this action, we recommend that you structure * your code so that it can handle new attributes gracefully. *

* * @param receiveMessageRequest Container for the necessary parameters to * execute the ReceiveMessage operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * ReceiveMessage service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future receiveMessageAsync( final ReceiveMessageRequest receiveMessageRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public ReceiveMessageResult call() throws Exception { ReceiveMessageResult result; try { result = receiveMessage(receiveMessageRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(receiveMessageRequest, result); return result; } }); } /** *

* Returns a list of your queues. The maximum number of queues that can * be returned is 1000. If you specify a value for the optional * QueueNamePrefix parameter, only queues with a name * beginning with the specified value are returned. *

* * @param listQueuesRequest Container for the necessary parameters to * execute the ListQueues operation on AmazonSQS. * * @return A Java Future object containing the response from the * ListQueues service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future listQueuesAsync(final ListQueuesRequest listQueuesRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public ListQueuesResult call() throws Exception { return listQueues(listQueuesRequest); } }); } /** *

* Returns a list of your queues. The maximum number of queues that can * be returned is 1000. If you specify a value for the optional * QueueNamePrefix parameter, only queues with a name * beginning with the specified value are returned. *

* * @param listQueuesRequest Container for the necessary parameters to * execute the ListQueues operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * ListQueues service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future listQueuesAsync( final ListQueuesRequest listQueuesRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public ListQueuesResult call() throws Exception { ListQueuesResult result; try { result = listQueues(listQueuesRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(listQueuesRequest, result); return result; } }); } /** *

* Deletes multiple messages. This is a batch version of DeleteMessage. * The result of the delete action on each message is reported * individually in the response. *

*

* IMPORTANT: Because the batch request can result in a * combination of successful and unsuccessful actions, you should check * for batch errors even when the call returns an HTTP status code of * 200. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param deleteMessageBatchRequest Container for the necessary * parameters to execute the DeleteMessageBatch operation on AmazonSQS. * * @return A Java Future object containing the response from the * DeleteMessageBatch service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future deleteMessageBatchAsync(final DeleteMessageBatchRequest deleteMessageBatchRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public DeleteMessageBatchResult call() throws Exception { return deleteMessageBatch(deleteMessageBatchRequest); } }); } /** *

* Deletes multiple messages. This is a batch version of DeleteMessage. * The result of the delete action on each message is reported * individually in the response. *

*

* IMPORTANT: Because the batch request can result in a * combination of successful and unsuccessful actions, you should check * for batch errors even when the call returns an HTTP status code of * 200. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param deleteMessageBatchRequest Container for the necessary * parameters to execute the DeleteMessageBatch operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * DeleteMessageBatch service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future deleteMessageBatchAsync( final DeleteMessageBatchRequest deleteMessageBatchRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public DeleteMessageBatchResult call() throws Exception { DeleteMessageBatchResult result; try { result = deleteMessageBatch(deleteMessageBatchRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(deleteMessageBatchRequest, result); return result; } }); } /** *

* Creates a new queue, or returns the URL of an existing one. When you * request CreateQueue , you provide a name for the queue. * To successfully create a new queue, you must provide a name that is * unique within the scope of your own queues. *

*

* NOTE: If you delete a queue, you must wait at least 60 seconds * before creating a queue with the same name. *

*

* You may pass one or more attributes in the request. If you do not * provide a value for any attribute, the queue will have the default * value for that attribute. Permitted attributes are the same that can * be set using SetQueueAttributes. *

*

* NOTE: Use GetQueueUrl to get a queue's URL. GetQueueUrl * requires only the QueueName parameter. *

*

* If you provide the name of an existing queue, along with the exact * names and values of all the queue's attributes, * CreateQueue returns the queue URL for the existing queue. * If the queue name, attribute names, or attribute values do not match * an existing queue, CreateQueue returns an error. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param createQueueRequest Container for the necessary parameters to * execute the CreateQueue operation on AmazonSQS. * * @return A Java Future object containing the response from the * CreateQueue service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future createQueueAsync(final CreateQueueRequest createQueueRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public CreateQueueResult call() throws Exception { return createQueue(createQueueRequest); } }); } /** *

* Creates a new queue, or returns the URL of an existing one. When you * request CreateQueue , you provide a name for the queue. * To successfully create a new queue, you must provide a name that is * unique within the scope of your own queues. *

*

* NOTE: If you delete a queue, you must wait at least 60 seconds * before creating a queue with the same name. *

*

* You may pass one or more attributes in the request. If you do not * provide a value for any attribute, the queue will have the default * value for that attribute. Permitted attributes are the same that can * be set using SetQueueAttributes. *

*

* NOTE: Use GetQueueUrl to get a queue's URL. GetQueueUrl * requires only the QueueName parameter. *

*

* If you provide the name of an existing queue, along with the exact * names and values of all the queue's attributes, * CreateQueue returns the queue URL for the existing queue. * If the queue name, attribute names, or attribute values do not match * an existing queue, CreateQueue returns an error. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param createQueueRequest Container for the necessary parameters to * execute the CreateQueue operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * CreateQueue service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future createQueueAsync( final CreateQueueRequest createQueueRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public CreateQueueResult call() throws Exception { CreateQueueResult result; try { result = createQueue(createQueueRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(createQueueRequest, result); return result; } }); } /** *

* Adds a permission to a queue for a specific * principal * . This allows for sharing access to the queue. *

*

* When you create a queue, you have full control access rights for the * queue. Only you (as owner of the queue) can grant or deny permissions * to the queue. For more information about these permissions, see * Shared Queues * in the Amazon SQS Developer Guide . *

*

* NOTE: AddPermission writes an Amazon SQS-generated policy. If * you want to write your own policy, use SetQueueAttributes to upload * your policy. For more information about writing your own policy, see * Using The Access Policy Language in the Amazon SQS Developer Guide. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param addPermissionRequest Container for the necessary parameters to * execute the AddPermission operation on AmazonSQS. * * @return A Java Future object containing the response from the * AddPermission service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future addPermissionAsync(final AddPermissionRequest addPermissionRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { addPermission(addPermissionRequest); return null; } }); } /** *

* Adds a permission to a queue for a specific * principal * . This allows for sharing access to the queue. *

*

* When you create a queue, you have full control access rights for the * queue. Only you (as owner of the queue) can grant or deny permissions * to the queue. For more information about these permissions, see * Shared Queues * in the Amazon SQS Developer Guide . *

*

* NOTE: AddPermission writes an Amazon SQS-generated policy. If * you want to write your own policy, use SetQueueAttributes to upload * your policy. For more information about writing your own policy, see * Using The Access Policy Language in the Amazon SQS Developer Guide. *

*

* NOTE:Some API actions take lists of parameters. These lists are * specified using the param.n notation. Values of n are integers * starting from 1. For example, a parameter list with two elements looks * like this: *

*

* &Attribute.1=this *

*

* &Attribute.2=that *

* * @param addPermissionRequest Container for the necessary parameters to * execute the AddPermission operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * AddPermission service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future addPermissionAsync( final AddPermissionRequest addPermissionRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { try { addPermission(addPermissionRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(addPermissionRequest, null); return null; } }); } /** *

* Deletes the specified message from the specified queue. You specify * the message by using the message's receipt handle and not * the message ID you received when you sent the message. * Even if the message is locked by another reader due to the visibility * timeout setting, it is still deleted from the queue. If you leave a * message in the queue for longer than the queue's configured retention * period, Amazon SQS automatically deletes it. *

*

* NOTE: The receipt handle is associated with a specific instance * of receiving the message. If you receive a message more than once, the * receipt handle you get each time you receive the message is different. * When you request DeleteMessage, if you don't provide the most recently * received receipt handle for the message, the request will still * succeed, but the message might not be deleted. *

*

* IMPORTANT: It is possible you will receive a message even after * you have deleted it. This might happen on rare occasions if one of the * servers storing a copy of the message is unavailable when you request * to delete the message. The copy remains on the server and might be * returned to you again on a subsequent receive request. You should * create your system to be idempotent so that receiving a particular * message more than once is not a problem. *

* * @param deleteMessageRequest Container for the necessary parameters to * execute the DeleteMessage operation on AmazonSQS. * * @return A Java Future object containing the response from the * DeleteMessage service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future deleteMessageAsync(final DeleteMessageRequest deleteMessageRequest) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { deleteMessage(deleteMessageRequest); return null; } }); } /** *

* Deletes the specified message from the specified queue. You specify * the message by using the message's receipt handle and not * the message ID you received when you sent the message. * Even if the message is locked by another reader due to the visibility * timeout setting, it is still deleted from the queue. If you leave a * message in the queue for longer than the queue's configured retention * period, Amazon SQS automatically deletes it. *

*

* NOTE: The receipt handle is associated with a specific instance * of receiving the message. If you receive a message more than once, the * receipt handle you get each time you receive the message is different. * When you request DeleteMessage, if you don't provide the most recently * received receipt handle for the message, the request will still * succeed, but the message might not be deleted. *

*

* IMPORTANT: It is possible you will receive a message even after * you have deleted it. This might happen on rare occasions if one of the * servers storing a copy of the message is unavailable when you request * to delete the message. The copy remains on the server and might be * returned to you again on a subsequent receive request. You should * create your system to be idempotent so that receiving a particular * message more than once is not a problem. *

* * @param deleteMessageRequest Container for the necessary parameters to * execute the DeleteMessage operation on AmazonSQS. * @param asyncHandler Asynchronous callback handler for events in the * life-cycle of the request. Users could provide the implementation of * the four callback methods in this interface to process the operation * result or handle the exception. * * @return A Java Future object containing the response from the * DeleteMessage service method, as returned by AmazonSQS. * * * @throws AmazonClientException * If any internal errors are encountered inside the client while * attempting to make the request or handle the response. For example * if a network connection is not available. * @throws AmazonServiceException * If an error response is returned by AmazonSQS indicating * either a problem with the data in the request, or a server side issue. */ public Future deleteMessageAsync( final DeleteMessageRequest deleteMessageRequest, final AsyncHandler asyncHandler) throws AmazonServiceException, AmazonClientException { return executorService.submit(new Callable() { public Void call() throws Exception { try { deleteMessage(deleteMessageRequest); } catch (Exception ex) { asyncHandler.onError(ex); throw ex; } asyncHandler.onSuccess(deleteMessageRequest, null); return null; } }); } }




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