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/**
* 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.activemq.console.command;
import java.net.URI;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import org.apache.activemq.broker.BrokerFactory;
import org.apache.activemq.broker.BrokerService;
public class StartCommand extends AbstractCommand {
public static final String DEFAULT_CONFIG_URI = "xbean:activemq.xml";
protected String[] helpFile = new String[] {
"Task Usage: Main start [start-options] [uri]",
"Description: Creates and starts a broker using a configuration file, or a broker URI.",
"",
"Start Options:",
" -D= Define a system property.",
" --version Display the version information.",
" -h,-?,--help Display the start broker help information.",
"",
"URI:",
"",
" XBean based broker configuration:",
"",
" Example: Main xbean:file:activemq.xml",
" Loads the xbean configuration file from the current working directory",
" Example: Main xbean:activemq.xml",
" Loads the xbean configuration file from the classpath",
"",
" URI Parameter based broker configuration:",
"",
" Example: Main broker:(tcp://localhost:61616, tcp://localhost:5000)?useJmx=true",
" Configures the broker with 2 transport connectors and jmx enabled",
" Example: Main broker:(tcp://localhost:61616, network:tcp://localhost:5000)?persistent=false",
" Configures the broker with 1 transport connector, and 1 network connector and persistence disabled",
""
};
@Override
public String getName() {
return "start";
}
@Override
public String getOneLineDescription() {
return "Creates and starts a broker using a configuration file, or a broker URI.";
}
/**
* The default task to start a broker or a group of brokers
*
* @param brokerURIs
*/
protected void runTask(List brokerURIs) throws Exception {
URI configURI;
while( true ) {
final BrokerService broker;
try {
// If no config uri, use default setting
if (brokerURIs.isEmpty()) {
configURI = new URI(DEFAULT_CONFIG_URI);
} else {
configURI = new URI(brokerURIs.get(0));
}
System.out.println("Loading message broker from: " + configURI);
broker = BrokerFactory.createBroker(configURI);
broker.start();
} catch (Exception e) {
context.printException(new RuntimeException("Failed to execute start task. Reason: " + e, e));
throw e;
}
if (!broker.waitUntilStarted()) {
throw new Exception(broker.getStartException());
}
// The broker started up fine. Now lets wait for it to stop...
final CountDownLatch shutdownLatch = new CountDownLatch(1);
final Thread jvmShutdownHook = new Thread() {
public void run() {
try {
broker.stop();
} catch (Exception e) {
}
}
};
Runtime.getRuntime().addShutdownHook(jvmShutdownHook);
broker.addShutdownHook(new Runnable() {
public void run() {
shutdownLatch.countDown();
}
});
// The broker has stopped..
shutdownLatch.await();
try {
Runtime.getRuntime().removeShutdownHook(jvmShutdownHook);
} catch (Throwable e) {
// may already be shutdown in progress so ignore
}
if( !broker.isRestartRequested() ) {
break;
}
System.out.println("Restarting broker");
}
}
/**
* Print the help messages for the browse command
*/
protected void printHelp() {
context.printHelp(helpFile);
}
}
