| package com.googlesource.gerrit.plugins.rabbitmq; |
| |
| import com.google.inject.Inject; |
| |
| import com.rabbitmq.client.Channel; |
| import com.rabbitmq.client.Connection; |
| import com.rabbitmq.client.ConnectionFactory; |
| import com.rabbitmq.client.ShutdownListener; |
| import com.rabbitmq.client.ShutdownSignalException; |
| |
| import org.apache.commons.codec.CharEncoding; |
| import org.apache.commons.lang.StringUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.net.URISyntaxException; |
| |
| public class AMQPSession implements ShutdownListener { |
| |
| private static final Logger LOGGER = LoggerFactory.getLogger(AMQPSession.class); |
| private final Properties properties; |
| private Connection connection; |
| private Channel publishChannel; |
| |
| @Inject |
| public AMQPSession(Properties properties) { |
| this.properties = properties; |
| } |
| |
| public boolean isOpen() { |
| if (connection != null) { |
| return true; |
| } |
| return false; |
| } |
| |
| public void connect() { |
| LOGGER.info("Connect to " + properties.getString(Keys.AMQP_URI) + "..."); |
| ConnectionFactory factory = new ConnectionFactory(); |
| try { |
| if (StringUtils.isNotEmpty(properties.getString(Keys.AMQP_URI))) { |
| factory.setUri(properties.getString(Keys.AMQP_URI)); |
| if (StringUtils.isNotEmpty(properties.getString(Keys.AMQP_USERNAME))) { |
| factory.setUsername(properties.getString(Keys.AMQP_USERNAME)); |
| } |
| if (StringUtils.isNotEmpty(properties.getString(Keys.AMQP_PASSWORD))) { |
| factory.setPassword(properties.getString(Keys.AMQP_PASSWORD)); |
| } |
| connection = factory.newConnection(); |
| connection.addShutdownListener(this); |
| LOGGER.info("Connection established."); |
| } |
| bind(); |
| } catch (URISyntaxException ex) { |
| LOGGER.error("URI syntax error: " + properties.getString(Keys.AMQP_URI)); |
| } catch (IOException ex) { |
| LOGGER.error("Connection cannot be opened."); |
| } catch (Exception ex) { |
| LOGGER.warn("#connect: " + ex.getClass().getName()); |
| } |
| } |
| |
| private void bind() { |
| if (connection != null && publishChannel == null) { |
| try { |
| Channel ch = connection.createChannel(); |
| LOGGER.info("Channel is opened."); |
| if (properties.getBoolean(Keys.QUEUE_DECLARE)) { |
| LOGGER.info("Declare Queue..."); |
| if (StringUtils.isNotEmpty(properties.getString(Keys.QUEUE_NAME))) { |
| LOGGER.info("Declare queue: " + properties.getString(Keys.QUEUE_NAME)); |
| ch.queueDeclare(properties.getString(Keys.QUEUE_NAME), |
| properties.getBoolean(Keys.QUEUE_DURABLE), |
| properties.getBoolean(Keys.QUEUE_EXCLUSIVE), |
| properties.getBoolean(Keys.QUEUE_AUTODELETE), null); |
| } |
| |
| if (properties.getBoolean(Keys.EXCHANGE_DECLARE)) { |
| LOGGER.info("Declare exchange: " + properties.getString(Keys.EXCHANGE_NAME)); |
| ch.exchangeDeclare(properties.getString(Keys.EXCHANGE_NAME), |
| properties.getString(Keys.EXCHANGE_TYPE), |
| properties.getBoolean(Keys.EXCHANGE_DURABLE), |
| properties.getBoolean(Keys.EXCHANGE_AUTODELETE), null); |
| } |
| |
| if (properties.getBoolean(Keys.BIND_STARTUP)) { |
| if (StringUtils.isNotEmpty(properties.getString(Keys.QUEUE_NAME))) { |
| LOGGER.info("Bind exchange and queue with key: " + properties.getString(Keys.BIND_ROUTINGKEY)); |
| ch.queueBind(properties.getString(Keys.QUEUE_NAME), |
| properties.getString(Keys.EXCHANGE_NAME), |
| properties.getString(Keys.BIND_ROUTINGKEY)); |
| } |
| } |
| |
| publishChannel = ch; |
| LOGGER.info("Complete to setup channel."); |
| } |
| } catch (Exception ex) { |
| LOGGER.warn("#bind: " + ex.getClass().getName()); |
| disconnect(); |
| } |
| } |
| } |
| |
| public void disconnect() { |
| LOGGER.info("Disconnecting..."); |
| try { |
| if (connection != null) { |
| connection.close(); |
| } |
| } catch (Exception ex) { |
| LOGGER.warn("#disconnect: " + ex.getClass().getName()); |
| connection = null; |
| publishChannel = null; |
| } |
| } |
| |
| public void sendMessage(String message) { |
| if (publishChannel != null && publishChannel.isOpen()) { |
| try { |
| LOGGER.debug("Send message."); |
| publishChannel.basicPublish(properties.getString(Keys.EXCHANGE_NAME), |
| properties.getString(Keys.MESSAGE_ROUTINGKEY), |
| properties.getBasicProperties(), |
| message.getBytes(CharEncoding.UTF_8)); |
| } catch (Exception ex) { |
| LOGGER.warn("#sendMessage: " + ex.getClass().getName()); |
| } |
| } |
| } |
| |
| @Override |
| public void shutdownCompleted(ShutdownSignalException arg0) { |
| LOGGER.info("Disconnected."); |
| connection = null; |
| publishChannel = null; |
| } |
| } |