| /* |
| * 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.logging.log4j.server; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.nio.charset.Charset; |
| import java.util.Properties; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| import javax.jms.MessageConsumer; |
| import javax.jms.MessageListener; |
| import javax.jms.ObjectMessage; |
| |
| import org.apache.logging.log4j.LoggingException; |
| import org.apache.logging.log4j.core.AbstractLifeCycle; |
| import org.apache.logging.log4j.core.LifeCycle2; |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.core.LogEventListener; |
| import org.apache.logging.log4j.core.appender.mom.JmsAppender; |
| import org.apache.logging.log4j.core.appender.mom.JmsManager; |
| import org.apache.logging.log4j.core.net.JndiManager; |
| |
| /** |
| * LogEventListener server that receives LogEvents over a JMS {@link javax.jms.Destination}. |
| * |
| * @since 2.1 |
| */ |
| public class JmsServer extends LogEventListener implements MessageListener, LifeCycle2 { |
| |
| private final AtomicReference<State> state = new AtomicReference<>(State.INITIALIZED); |
| private final JmsManager jmsManager; |
| private MessageConsumer messageConsumer; |
| |
| public JmsServer(final String connectionFactoryBindingName, final String connectionFactoryName, |
| final String providerURL, final String destinationBindingName, final String username, final char[] password, |
| final Properties jndiProperties) { |
| final String managerName = JmsServer.class.getName() + '@' + JmsServer.class.hashCode(); |
| final Properties jndiManager = JndiManager.createProperties(connectionFactoryBindingName, providerURL, null, |
| null, null, jndiProperties); |
| jmsManager = JmsManager.getJmsManager(managerName, jndiManager, connectionFactoryName, destinationBindingName, |
| username, password, false, JmsAppender.Builder.DEFAULT_RECONNECT_INTERVAL_MILLIS); |
| } |
| |
| @Override |
| public State getState() { |
| return state.get(); |
| } |
| |
| @Override |
| public void onMessage(final Message message) { |
| try { |
| if (message instanceof ObjectMessage) { |
| final Object body = ((ObjectMessage) message).getObject(); |
| if (body instanceof LogEvent) { |
| log((LogEvent) body); |
| } else { |
| LOGGER.warn("Expected ObjectMessage to contain LogEvent. Got type {} instead.", body.getClass()); |
| } |
| } else { |
| LOGGER.warn("Received message of type {} and JMSType {} which cannot be handled.", message.getClass(), |
| message.getJMSType()); |
| } |
| } catch (final JMSException e) { |
| LOGGER.catching(e); |
| } |
| } |
| |
| @Override |
| public void initialize() { |
| } |
| |
| @Override |
| public void start() { |
| if (state.compareAndSet(State.INITIALIZED, State.STARTING)) { |
| try { |
| messageConsumer = jmsManager.createMessageConsumer(); |
| messageConsumer.setMessageListener(this); |
| } catch (final JMSException e) { |
| throw new LoggingException(e); |
| } |
| } |
| } |
| |
| @Override |
| public void stop() { |
| stop(AbstractLifeCycle.DEFAULT_STOP_TIMEOUT, AbstractLifeCycle.DEFAULT_STOP_TIMEUNIT); |
| } |
| |
| @Override |
| public boolean stop(final long timeout, final TimeUnit timeUnit) { |
| boolean stopped = true; |
| try { |
| messageConsumer.close(); |
| } catch (final JMSException e) { |
| LOGGER.debug("Exception closing {}", messageConsumer, e); |
| stopped = false; |
| } |
| return stopped && jmsManager.stop(timeout, timeUnit); |
| } |
| |
| @Override |
| public boolean isStarted() { |
| return state.get() == State.STARTED; |
| } |
| |
| @Override |
| public boolean isStopped() { |
| return state.get() == State.STOPPED; |
| } |
| |
| /** |
| * Starts and runs this server until the user types "exit" into standard input. |
| * |
| * @throws IOException |
| */ |
| public void commandLineLoop() throws IOException { |
| System.out.println("Type \"exit\" to quit."); |
| final BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in, Charset.defaultCharset())); |
| while (true) { |
| final String line = stdin.readLine(); |
| if (line == null || line.equalsIgnoreCase("exit")) { |
| System.out.println("Exiting. Kill the application if it does not exit due to daemon threads."); |
| this.stop(); |
| return; |
| } |
| } |
| } |
| |
| } |