QueueRequestDAOImpl.java

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package com.microsoftopentechnologies.azchat.web.dao;

import java.util.HashSet;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.stereotype.Service;

import com.microsoft.azure.storage.queue.CloudQueue;
import com.microsoft.azure.storage.queue.CloudQueueMessage;
import com.microsoftopentechnologies.azchat.web.common.utils.AzureChatConstants;
import com.microsoftopentechnologies.azchat.web.common.utils.AzureChatStorageUtils;

/**
 * Implementation class for the QueueRequestDAO.This class provides operations
 * to interact with the azure queues.
 * 
 * @author Rupesh_Shirude
 */
@Service("queueRequestDAO")
public class QueueRequestDAOImpl implements QueueRequestDAO {
	private static final Logger LOGGER = LogManager
			.getLogger(QueueRequestDAOImpl.class);

	/**
	 * This method is used to post the input message to azure queue.
	 * 
	 * @param message
	 * @param expiryTimeInSeconds
	 * @throws Exception
	 * @author rupesh_shirude
	 */
	@Override
	public void postMessage(String message, int expiryTimeInSeconds)
			throws Exception {
		LOGGER.info("[QueueRequestDAOImpl][postMessage] start ");
		AzureChatStorageUtils.postMessageToQueue(
				AzureChatConstants.QUEUE_NAME_MESSAGE, message,
				expiryTimeInSeconds);
		LOGGER.info("[QueueRequestDAOImpl][postMessage] end ");
	}

	/**
	 * This method is used to get the messages from azure queue.
	 * 
	 * @return
	 * @throws Exception
	 * @author rupesh_shirude
	 */
	@Override
	public CloudQueueMessage getMessageFromQueue() throws Exception {
		LOGGER.info("[QueueRequestDAOImpl][getMessageFromQueue] start ");
		CloudQueueMessage cloudQueueMessage = AzureChatStorageUtils
				.getMessageFromQueue(AzureChatConstants.QUEUE_NAME_MESSAGE);
		LOGGER.info("[QueueRequestDAOImpl][getMessageFromQueue] end ");
		return cloudQueueMessage;
	}

	/**
	 * This method is used to delete the input messages from azure queue.
	 * 
	 * @param queueMessage
	 * @throws Exception
	 * @author rupesh_shirude
	 */
	@Override
	public void deleteMessageFromQueue(CloudQueueMessage queueMessage)
			throws Exception {
		LOGGER.info("[QueueRequestDAOImpl][deleteMessageFromQueue] start ");
		AzureChatStorageUtils.deleteMessageFromQueue(
				AzureChatConstants.QUEUE_NAME_MESSAGE, queueMessage);
		LOGGER.info("[QueueRequestDAOImpl][deleteMessageFromQueue] end ");
	}

	/**
	 * This method is used to get all messages from azure queue for the input
	 * queue name.
	 * 
	 * @param queueMessage
	 * @throws Exception
	 * @author rupesh_shirude
	 */
	@Override
	public Set<String> getAllMessagesFromQueue(String queueName)
			throws Exception {
		LOGGER.info("[QueueRequestDAOImpl][checkMessageExpiryFromQueue] start ");
		Set<String> setStrings = new HashSet<String>();
		CloudQueue queue = AzureChatStorageUtils.getQueueReference(queueName);
		queue.downloadAttributes();
		int messageCount = 32;
		for (CloudQueueMessage message : queue.retrieveMessages(messageCount,
				1, null, null)) {
			setStrings.add(message.getMessageContentAsString());
		}
		LOGGER.info("[QueueRequestDAOImpl][checkMessageExpiryFromQueue] end ");
		return setStrings;
	}

	/**
	 * This method is used to post input message to azure queue with input
	 * expire time.
	 * 
	 * @param message
	 * @param expiryTimeInSeconds
	 * @throws Exception
	 * @author rupesh_shirude
	 */
	@Override
	public void postFriendRequestNotification(String message,
			int expiryTimeInSeconds) throws Exception {
		LOGGER.info("[QueueRequestDAOImpl][postMessage] start ");
		AzureChatStorageUtils.postMessageToQueue(
				AzureChatConstants.QUEUE_NAME_EMAIL_NOTIFICATION, message,
				expiryTimeInSeconds);
		LOGGER.info("[QueueRequestDAOImpl][postMessage] end ");

	}
}