AWS Code Sample

<<FILENAME>> demonstrates how to change the visibility timeout for a queue.

/* * Copyright 2011-2018, 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. * You may obtain a copy of the License at: * * * * 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 aws.example.sqs; import; import; import; import; import; import java.util.ArrayList; import java.util.List; import java.util.Date; public class VisibilityTimeout { // Change the visibility timeout for a single message public static void changeMessageVisibilitySingle( String queue_url, int timeout) { AmazonSQS sqs = AmazonSQSClientBuilder.defaultClient(); // Get the receipt handle for the first message in the queue. String receipt = sqs.receiveMessage(queue_url) .getMessages() .get(0) .getReceiptHandle(); sqs.changeMessageVisibility(queue_url, receipt, timeout); } // Change the visibility timeout for multiple messages. public static void changeMessageVisibilityMultiple( String queue_url, int timeout) { AmazonSQS sqs = AmazonSQSClientBuilder.defaultClient(); List<ChangeMessageVisibilityBatchRequestEntry> entries = new ArrayList<ChangeMessageVisibilityBatchRequestEntry>(); entries.add(new ChangeMessageVisibilityBatchRequestEntry( "unique_id_msg1", sqs.receiveMessage(queue_url) .getMessages() .get(0) .getReceiptHandle()) .withVisibilityTimeout(timeout)); entries.add(new ChangeMessageVisibilityBatchRequestEntry( "unique_id_msg2", sqs.receiveMessage(queue_url) .getMessages() .get(0) .getReceiptHandle()) .withVisibilityTimeout(timeout + 200)); sqs.changeMessageVisibilityBatch(queue_url, entries); } public static void main(String[] args) { final String queue_name = "testQueue" + new Date().getTime(); AmazonSQS sqs = AmazonSQSClientBuilder.defaultClient(); // first, create a queue (unless it exists already) try { CreateQueueResult cq_result = sqs.createQueue(queue_name); } catch (AmazonSQSException e) { if (!e.getErrorCode().equals("QueueAlreadyExists")) { throw e; } } final String queue_url = sqs.getQueueUrl(queue_name).getQueueUrl(); // Send some messages to the queue for (int i = 0; i < 20; i++) { sqs.sendMessage(queue_url, "This is message " + i); } // change visibility timeout (single) changeMessageVisibilitySingle(queue_url, 3600); // change visibility timeout (multiple) changeMessageVisibilityMultiple(queue_url, 2000); } }

Sample Details

Service: sqs

Author: soo-aws

Type: full-example

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