| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.nuvem.cloud.messageQueueService.impl; |
| |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.Iterator; |
| import java.util.ArrayList; |
| |
| import org.apache.nuvem.cloud.messageQueueService.MessageQueueService; |
| import org.apache.nuvem.cloud.messageQueueService.QueueMessage; |
| import org.apache.nuvem.cloud.messageQueueService.QueueMessageHandle; |
| import org.apache.nuvem.cloud.messageQueueService.MessageQueueServiceException; |
| |
| import com.amazonaws.auth.AWSCredentials; |
| import com.amazonaws.auth.PropertiesCredentials; |
| import com.amazonaws.AmazonClientException; |
| import com.amazonaws.AmazonServiceException; |
| import com.amazonaws.auth.PropertiesCredentials; |
| |
| import com.amazonaws.services.sqs.AmazonSQS; |
| import com.amazonaws.services.sqs.AmazonSQSClient; |
| import com.amazonaws.services.sqs.model.DeleteMessageRequest; |
| import com.amazonaws.services.sqs.model.Message; |
| import com.amazonaws.services.sqs.model.ReceiveMessageRequest; |
| import com.amazonaws.services.sqs.model.SendMessageRequest; |
| import com.amazonaws.services.sqs.model.SendMessageResult; |
| import com.amazonaws.services.sqs.model.GetQueueUrlRequest; |
| import com.amazonaws.services.sqs.model.GetQueueUrlResult; |
| |
| /** |
| *The AmazonMessageQueueServiceImpl class |
| */ |
| public class AmazonMessageQueueServiceImpl implements MessageQueueService { |
| |
| public static final String AMAZON_CREDENTIALS_CONFIG_FILE_NAME = "AwsCredentials.properties"; |
| public static final String AMAZON_ACCESS_KEY = "accessKey"; |
| public static final String AMAZON_SECRET_KEY = "secretKey"; |
| public static final String AMAZON_QUEUE_CONFIG_FILE_NAME = "queue.properties"; |
| public static final String AMAZON_QUEUE_NAME = "QueueName"; |
| public static final String AMAZON_DEFAULT_QUEUE_NAME = "MyQueue"; |
| |
| private AmazonSQS sqsClient; |
| private String queueURL; |
| private String queueName; |
| |
| /** |
| * Instantiates a new AmazonMessageQueueServiceImpl |
| */ |
| public AmazonMessageQueueServiceImpl() { |
| try { |
| this.sqsClient = new AmazonSQSClient(new PropertiesCredentials( |
| AmazonMessageQueueServiceImpl.class. |
| getResourceAsStream(AMAZON_CREDENTIALS_CONFIG_FILE_NAME))); |
| |
| this.queueName = AMAZON_DEFAULT_QUEUE_NAME; |
| setQueueURl(queueName); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Instantiates a new AmazonMessageQueueServiceImpl |
| * |
| * @param accessKey The Amazon access key |
| * @param secretKey The Amazon secret key |
| */ |
| public AmazonMessageQueueServiceImpl(final String accessKey, final String secretKey) { |
| try{ |
| AWSCredentials amazonCredentials = new AWSCredentials() { |
| @Override |
| public String getAWSAccessKeyId() { |
| return accessKey; |
| } |
| |
| @Override |
| public String getAWSSecretKey() { |
| return secretKey; |
| } |
| }; |
| |
| sqsClient = new AmazonSQSClient(amazonCredentials); |
| this.queueName = AMAZON_DEFAULT_QUEUE_NAME; |
| setQueueURl(queueName); |
| }catch(Exception e){ |
| e.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Instantiates a new AmazonMessageQueueServiceImpl |
| * |
| * @param configAmazonCredentials Amazon credential configuration |
| */ |
| public AmazonMessageQueueServiceImpl(final Map configAmazonCredentials) { |
| try{ |
| AWSCredentials amazonCredentials = new AWSCredentials() { |
| @Override |
| public String getAWSAccessKeyId() { |
| return (String) configAmazonCredentials.get(AMAZON_ACCESS_KEY); |
| } |
| |
| @Override |
| public String getAWSSecretKey() { |
| return (String) configAmazonCredentials.get(AMAZON_SECRET_KEY); |
| } |
| }; |
| |
| sqsClient = new AmazonSQSClient(amazonCredentials); |
| this.queueName = AMAZON_DEFAULT_QUEUE_NAME; |
| setQueueURl(queueName); |
| }catch(Exception e){ |
| e.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Instantiates a new AmazonMessageQueueServiceImpl |
| * |
| * @param sqsClient The AmazonSQS client |
| */ |
| public AmazonMessageQueueServiceImpl(AmazonSQSClient sqsClient) { |
| try{ |
| this.sqsClient = sqsClient; |
| this.queueName = AMAZON_DEFAULT_QUEUE_NAME; |
| setQueueURl(queueName); |
| }catch(Exception e){ |
| e.printStackTrace(); |
| } |
| } |
| |
| /** |
| * Sets the queueURL using queueName |
| * |
| * @param queueName the queue name |
| */ |
| private void setQueueURl(String queueName) throws IOException { |
| GetQueueUrlRequest getQueueUrlRequest = new GetQueueUrlRequest(queueName); |
| GetQueueUrlResult getQueueUrlResult= sqsClient.getQueueUrl(getQueueUrlRequest); |
| this.queueURL = getQueueUrlResult.getQueueUrl(); |
| } |
| |
| /** |
| * Gets the queue name from property file |
| */ |
| private String getQueueName() throws IOException { |
| Properties queueProperties = new Properties(); |
| queueProperties.load(AmazonMessageQueueServiceImpl.class. |
| getResourceAsStream(AMAZON_QUEUE_CONFIG_FILE_NAME)); |
| return queueProperties.getProperty(AMAZON_QUEUE_NAME); |
| } |
| |
| /** |
| * Sends the message |
| * |
| * @param queueMessage the queue message |
| * @return the queue message handle |
| * @throws MessageQueueServiceException |
| */ |
| @Override |
| public QueueMessageHandle sendMessage(QueueMessage queueMessage) throws MessageQueueServiceException { |
| try{ |
| SendMessageRequest sendMessageRequest = new SendMessageRequest(queueURL, queueMessage.getMessageBody()); |
| SendMessageResult sendMessageResult = sqsClient.sendMessage(sendMessageRequest); |
| QueueMessageHandle queueMessageHandle = new QueueMessageHandle(); |
| queueMessageHandle.setId(sendMessageResult.getMessageId()); |
| queueMessageHandle.setMessageBody(queueMessage.getMessageBody()); |
| return queueMessageHandle; |
| }catch(Exception e){ |
| throw new MessageQueueServiceException(e); |
| } |
| } |
| |
| /** |
| * Receive Messages |
| * |
| * @param numMessages number of messages to receive |
| * @return list of queue messages |
| * @throws MessageQueueServiceException |
| */ |
| @Override |
| public List<QueueMessage> receiveMessage(int numMessages) throws MessageQueueServiceException{ |
| try{ |
| ReceiveMessageRequest receiveMessageRequest = new ReceiveMessageRequest(this.queueURL); |
| receiveMessageRequest.setMaxNumberOfMessages(numMessages); |
| List<Message> messages = sqsClient.receiveMessage(receiveMessageRequest).getMessages(); |
| List<QueueMessage> queueMessages = new ArrayList<QueueMessage>(messages.size()); |
| Iterator messageIterator = messages.iterator(); |
| Message message; |
| while(messageIterator.hasNext()){ |
| message = (Message)messageIterator.next(); |
| queueMessages.add(new QueueMessage(message.getReceiptHandle(), message.getBody())); |
| } |
| return queueMessages; |
| }catch(Exception e){ |
| throw new MessageQueueServiceException(e); |
| } |
| } |
| |
| /** |
| * Deletes the message |
| * |
| * @param queueMessage the message to delete |
| * @return true, if deleting message is successful |
| * @throws MessageQueueServiceException |
| */ |
| @Override |
| public boolean deleteMessage(QueueMessage queueMessage) throws MessageQueueServiceException{ |
| try{ |
| String messageRecieptHandle = queueMessage.getId(); |
| sqsClient.deleteMessage(new DeleteMessageRequest(this.queueURL, messageRecieptHandle)); |
| return true; |
| }catch(Exception e){ |
| throw new MessageQueueServiceException(e); |
| } |
| } |
| } |