org.apache.synapse.SynapseServer Maven / Gradle / Ivy
/*
* 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.synapse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.util.concurrent.CountDownLatch;
/**
* This is the class invoked by the command line scripts synapse.sh and synapse-daemon.sh to
* start an instance of Synapse. This class calls on the ServerManager to start up the instance
*
* TODO Switch to using commons-cli and move all command line parameter processing etc from the
* .sh and .bat into this.. for 1.3 release :)
*/
public class SynapseServer {
private static final Log log = LogFactory.getLog(SynapseServer.class);
private static final String USAGE_TXT =
"Usage: SynapseServer " +
" " +
"\n Opts: -? this message";
/** This is the class to control the synapse server */
private static ServerManager serverManager;
public static void printUsage() {
System.out.println(USAGE_TXT);
System.exit(1);
}
public static void main(String[] args) throws Exception {
// first check if we should print usage
if (args.length <= 0 || args.length == 2 || args.length == 3 || args.length >= 8) {
printUsage();
}
log.info("Starting Apache Synapse...");
// create the server configuration using the commandline arguments
ServerConfigurationInformation configurationInformation =
ServerConfigurationInformationFactory.createServerConfigurationInformation(args);
serverManager = new ServerManager();
serverManager.init(configurationInformation, null);
try {
serverManager.start();
addShutdownHook();
log.info("Apache Synapse started successfully");
// Put the main thread into wait state. This makes sure that the Synapse server
// doesn't stop immediately if ServerManager#start doesn't create any non daemon
// threads (see also SYNAPSE-425).
new CountDownLatch(1).await();
} catch (SynapseException e) {
log.error("Error starting Apache Synapse, trying a clean shutdown...", e);
serverManager.shutdown();
}
}
private static void addShutdownHook() {
Thread shutdownHook = new Thread() {
public void run() {
log.info("Shutting down Apache Synapse...");
try {
serverManager.shutdown();
log.info("Apache Synapse shutdown complete");
log.info("Halting JVM");
} catch (Exception e) {
log.error("Error occurred while shutting down Apache Synapse, " +
"it may not be a clean shutdown", e);
}
}
};
Runtime.getRuntime().addShutdownHook(shutdownHook);
}
}