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    
018    package org.apache.logging.log4j.core.net.mom.jms;
019    
020    import java.io.BufferedReader;
021    import java.io.InputStreamReader;
022    import java.nio.charset.Charset;
023    
024    import org.apache.logging.log4j.core.net.server.JmsServer;
025    
026    /**
027     * Receives Topic messages that contain LogEvents. This implementation expects that all messages
028     * are serialized log events.
029     */
030    public class JmsTopicReceiver {
031    
032        /**
033         * Main startup for the receiver.
034         * @param args The command line arguments.
035         * @throws Exception if an error occurs.
036         */
037        public static void main(final String[] args) throws Exception {
038            if (args.length != 4) {
039                usage("Wrong number of arguments.");
040            }
041    
042            final String tcfBindingName = args[0];
043            final String topicBindingName = args[1];
044            final String username = args[2];
045            final String password = args[3];
046            final JmsServer server = new JmsServer(tcfBindingName, topicBindingName, username, password);
047            server.start();
048    
049            final Charset enc = Charset.defaultCharset();
050            final BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in, enc));
051            // Loop until the word "exit" is typed
052            System.out.println("Type \"exit\" to quit JmsTopicReceiver.");
053            while (true) {
054                final String line = stdin.readLine();
055                if (line == null || line.equalsIgnoreCase("exit")) {
056                    System.out.println("Exiting. Kill the application if it does not exit "
057                        + "due to daemon threads.");
058                    server.stop();
059                    return;
060                }
061            }
062        }
063    
064        private static void usage(final String msg) {
065            System.err.println(msg);
066            System.err.println("Usage: java " + JmsTopicReceiver.class.getName()
067                + " TopicConnectionFactoryBindingName TopicBindingName username password");
068            System.exit(1);
069        }
070    }