Java tutorial
/* The MIT License (MIT) Copyright (c) 2015 JKTSoftware Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ package com.jktsoftware.amazondownloader.queuemanager; import javax.json.Json; import javax.json.JsonBuilderFactory; import javax.json.JsonObject; import com.amazonaws.auth.AWSCredentials; import com.amazonaws.auth.BasicAWSCredentials; 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.SendMessageRequest; import com.jktsoftware.amazondownloader.download.interfaces.ICredentials; import com.jktsoftware.amazondownloader.queuemanager.interfaces.IQueueManager; /** * * @author jktdev */ public class DownloaderQueueManager implements IQueueManager { String _receivedqueuename = ""; String _failedqueuename = ""; String _requestqueueurl = ""; String _receivedqueueurl = ""; String _failedqueueurl = ""; ICredentials _credentials; AmazonSQS _sqs = null; public DownloaderQueueManager(ICredentials credentials, String receivedqueuename, String failedqueuename) { this._credentials = credentials; this._receivedqueuename = receivedqueuename; this._failedqueuename = failedqueuename; } public void setSuccessQueueName(String name) { _receivedqueuename = name; } public String getSuccessQueueName() { return _receivedqueuename; } public void setFailQueueName(String name) { _failedqueuename = name; } public String getFailQueueName() { return _failedqueuename; } public void CreateQueues() { AWSCredentials awscredentials = new BasicAWSCredentials(this._credentials.getAccessKey(), this._credentials.getSecretAccessKey()); _sqs = new AmazonSQSClient(awscredentials); Region euWest1 = Region.getRegion(Regions.EU_WEST_1); _sqs.setRegion(euWest1); System.out.println("Creating amazon download queues.\n"); CreateQueueRequest createReceivedQueueRequest = new CreateQueueRequest(_receivedqueuename); this._receivedqueueurl = _sqs.createQueue(createReceivedQueueRequest).getQueueUrl(); CreateQueueRequest createFailedQueueRequest = new CreateQueueRequest(_failedqueuename); this._failedqueueurl = _sqs.createQueue(createFailedQueueRequest).getQueueUrl(); } public boolean sendReceivedObjectMessageToQueue(String objectid) { JsonBuilderFactory factory = Json.createBuilderFactory(null); JsonObject value = factory.createObjectBuilder().add("eventtype", "downloaderReceived") .add("objectid", objectid).build(); _sqs.sendMessage(new SendMessageRequest(this._receivedqueueurl, value.toString())); return true; } public boolean sendFailedObjectMessageToQueue(String objectid, String error) { JsonBuilderFactory factory = Json.createBuilderFactory(null); JsonObject value = factory.createObjectBuilder().add("eventtype", "downloaderFailed") .add("objectid", objectid).add("error", error).build(); _sqs.sendMessage(new SendMessageRequest(this._failedqueueurl, value.toString())); return true; } public String getQueueType() { return "AmazonSqsBucket"; } public ICredentials getCredentials() { return this._credentials; } public void setCredentials(ICredentials credentials) { this._credentials = credentials; } }