001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017 package org.apache.logging.log4j.core.net; 018 019 import javax.jms.JMSException; 020 import javax.jms.Queue; 021 import javax.jms.QueueConnection; 022 import javax.jms.QueueConnectionFactory; 023 import javax.jms.QueueReceiver; 024 import javax.jms.QueueSession; 025 import javax.jms.Session; 026 import javax.naming.Context; 027 import javax.naming.InitialContext; 028 import javax.naming.NamingException; 029 import java.io.BufferedReader; 030 import java.io.InputStreamReader; 031 032 /** 033 * Receives Log Events over a JMS Queue. This implementation expects that all messages will 034 * contain a serialized LogEvent. 035 */ 036 public class JMSQueueReceiver extends AbstractJMSReceiver { 037 038 /** 039 * Constructor. 040 * @param qcfBindingName The QueueConnectionFactory binding name. 041 * @param queueBindingName The Queue binding name. 042 * @param username The userid to connect to the queue. 043 * @param password The password to connect to the queue. 044 */ 045 public JMSQueueReceiver(String qcfBindingName, String queueBindingName, String username, String password) { 046 047 try { 048 Context ctx = new InitialContext(); 049 QueueConnectionFactory queueConnectionFactory; 050 queueConnectionFactory = (QueueConnectionFactory) lookup(ctx, qcfBindingName); 051 QueueConnection queueConnection = queueConnectionFactory.createQueueConnection(username, password); 052 queueConnection.start(); 053 QueueSession queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); 054 Queue queue = (Queue) ctx.lookup(queueBindingName); 055 QueueReceiver queueReceiver = queueSession.createReceiver(queue); 056 queueReceiver.setMessageListener(this); 057 } catch (JMSException e) { 058 logger.error("Could not read JMS message.", e); 059 } catch (NamingException e) { 060 logger.error("Could not read JMS message.", e); 061 } catch (RuntimeException e) { 062 logger.error("Could not read JMS message.", e); 063 } 064 } 065 066 /** 067 * Main startup for the receiver. 068 * @param args The command line arguments. 069 * @throws Exception if an error occurs. 070 */ 071 public static void main(String[] args) throws Exception { 072 if (args.length != 4) { 073 usage("Wrong number of arguments."); 074 } 075 076 String qcfBindingName = args[0]; 077 String queueBindingName = args[1]; 078 String username = args[2]; 079 String password = args[3]; 080 081 new JMSQueueReceiver(qcfBindingName, queueBindingName, username, password); 082 083 BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in)); 084 // Loop until the word "exit" is typed 085 System.out.println("Type \"exit\" to quit JMSQueueReceiver."); 086 while (true) { 087 String s = stdin.readLine(); 088 if (s.equalsIgnoreCase("exit")) { 089 System.out.println("Exiting. Kill the application if it does not exit " 090 + "due to daemon threads."); 091 return; 092 } 093 } 094 } 095 096 097 private static void usage(String msg) { 098 System.err.println(msg); 099 System.err.println("Usage: java " + JMSQueueReceiver.class.getName() 100 + " QueueConnectionFactoryBindingName QueueBindingName username password"); 101 System.exit(1); 102 } 103 }