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package com.sun.enterprise.jbi.serviceengine.core;
import com.sun.enterprise.jbi.serviceengine.ServiceEngineException;
import com.sun.enterprise.webservice.ServiceEngineUtil;
import com.sun.logging.LogDomains;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.management.ObjectName;
import javax.jbi.JBIException;
import javax.jbi.component.ComponentContext;
import javax.jbi.component.ComponentLifeCycle;
/**
* Provide initialization, start, stop, and shutdown processing. The JBI
* implementation queries the component for the implementation of this
* interface using the <code>Component.getComponentLifeCycle()</code> method.
* The methods in this interface comprise the life cycle contract between the
* JBI implementation and the component. The life cycle of a component begins
* with a call to the <code>init()</code> method on an instance of the
* component's implementation of this interface, and ends with the first call
* to the <code>shutDown()</code> method on that instance. Between these two
* calls, there can be any number of <code>stop()</code> and
* <code>start()</code> calls.
* @author Manisha Umbarje
*/
public class JavaEEServiceEngineLifeCycle implements ComponentLifeCycle {
/**
* This context provides access to data needed by all JBI components running in
* the JBI environment.
*/
private JavaEEServiceEngineContext context;
private ComponentContext jbiContext;
private Thread managerThread;
/**
* Internal handle to the logger instance
*/
protected static final Logger logger =
LogDomains.getLogger(LogDomains.SERVER_LOGGER);
/** Creates a new instance of JavaEEServiceEngineLifeCycle */
public JavaEEServiceEngineLifeCycle() {
}
/**
* Get the JMX <code>ObjectName</code> for any additional MBean for this
* component. If there is none, return <code>null</code>.
* @return the JMX object name of the additional MBean or <code>null</code>
* if there is no additional MBean.
*/
public ObjectName getExtensionMBeanName(){
return null;
}
/**
* Initialize the component. This performs initialization required by the
* component but does not make it ready to process messages. This method
* is called once for each life cycle of the component.
* @param context the component's context.
* @throws javax.jbi.JBIException if the component is unable to initialize.
*/
public void init(ComponentContext jbiContext) throws JBIException {
this.jbiContext = jbiContext;
}
/**
* Shut down the component. This performs cleanup before the component is
* terminated. Once this method has been called, <code>init()</code> must
* be called before the component can be started again with a call to
* <code>start()</code>.
* @throws javax.jbi.JBIException if the component is unable to shut down.
*/
public void shutDown() throws JBIException {
}
/**
* Start the component. This makes the component ready to process messages.
* This method is called after <code>init()</code> completes when the JBI
* implementation is starting up, and when the component is being restarted
* after a previous call to <code>shutDown()</code>. If <code>stop()</code>
* was called previously but <code>shutDown()</code> was not, then
* <code>start()</code> can be called again without another call to
* <code>init()</code>.
* @throws javax.jbi.JBIException if the component is unable to start.
*/
public void start() throws JBIException{
try {
if(ServiceEngineUtil.isServiceEngineEnabled()) {
logger.log(Level.FINE, "Service Engine starting");
context = JavaEEServiceEngineContext.getInstance();
context.setJBIContext(jbiContext);
context.initialize();
if(context.isSunESB()) {
jbiContext.getMBeanServer().registerMBean(
new JavaEEDeployer(),
jbiContext.getMBeanNames().createCustomComponentMBeanName("JavaEEDeployer"));
logger.log(Level.FINE, "Successfully registered JavaEEDeployer.");
}
// Starts all the threads such as thread accepting a message from
// DeliveryChannel and delivering it to WorkManager
managerThread = new Thread(context.getWorkManager());
managerThread.start();
logger.log(Level.INFO, "serviceengine.success_start");
} else {
logger.log(Level.INFO,
"Java EE Service Engine is not active as it is disabled " +
"by setting the JVM flag com.sun.enterprise.jbi.se.disable to true");
}
}catch(Exception e) {
logger.log(Level.SEVERE, "serviceengine.error_start",
new Object[]{e.getMessage()});
throw new JBIException(e.getMessage());
}
}
/**
* Stop the component. This makes the component stop accepting messages for
* processing. After a call to this method, <code>start()</code> can be
* called again without first calling <code>init()</code>.
* @throws javax.jbi.JBIException if the component is unable to stop.
*/
public void stop() throws JBIException {
//Stop multiple threads involved in request processing by the
//JavaEEServiceEngine
try {
if(ServiceEngineUtil.isServiceEngineEnabled()) {
context.getDeliveryChannel().close();
context.getWorkManager().stop();
managerThread.join();
if(context.isSunESB()) {
jbiContext.getMBeanServer().unregisterMBean(
jbiContext.getMBeanNames().createCustomComponentMBeanName("JavaEEDeployer"));
}
logger.log(Level.INFO, "serviceengine.success_stop");
}
} catch(Exception e) {
e.printStackTrace();
throw new JBIException(e.getMessage());
}
}
}
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