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ASLazyKernel.javaAPI DocGlassfish v2 API12922Tue Jul 24 11:27:00 BST 2007com.sun.enterprise.server.ss

ASLazyKernel

public final class ASLazyKernel extends Object
This is a helper class to start an ASSocketService instance on various ports. We also setup socket factories.

Fields Summary
private static final String
AS_SELECTOR_PROVIDER
private static final String
SELECTOR_PROVIDER_PROP
private static final String
QUICK_STARTUP
private static final String
DEFAULT_SELECTOR_PROVIDER
private static final String
SERVER_VM_FLAG
private static boolean
areJDKClassesCreatable
private static final Logger
logger
private com.sun.enterprise.config.serverbeans.Config
conf
private com.sun.enterprise.admin.server.core.AdminChannelLifecycle
adminlc
Constructors Summary
Methods Summary
private voidabortAdminService(com.sun.enterprise.server.ServerContext sc, int port)

        try {
            createAdminChannelLifecycle(); 
            adminlc.onAbort(port);
            ASSocketService.waitForClientNotification();
            adminlc.onShutdown();
            adminlc.onTermination();
        } catch (Exception e) {
            e.printStackTrace();
        }
    
private static booleanareJDKClassesCreatable()
The whole quick startup for the appserver hinges on whether we can wrap JDK socket layer. So check it.

	if ( areJDKClassesCreatable ) {
	     return true;
	}
        try {
	    Class clazz = Class.forName(DEFAULT_SELECTOR_PROVIDER);
	        
	    java.lang.reflect.Method createMeth = clazz.getMethod("create", 
								new Class[] {});
	    createMeth.invoke( null, new Object[] {} ); 

            //Attempt to create the JDK socketimpl.
            new ASPlainSocketImpl();

	} catch( Exception e ) {
	    logFine( "Exception in areJDKClassesCreatable : " + e );
	    return false;
	}
       
	//Since we could invoke "create" on a DefaultSelectorProvider object 
	//successfully, everything is ok
	areJDKClassesCreatable = true;
	return true;
    
private voidcreateAdminChannelLifecycle()

        if (adminlc == null) {
            adminlc = new AdminChannelLifecycle();
        } 
    
private voidexitServer(com.sun.enterprise.server.ServerContext context, int port)

        logFine("Stopped MQ");
                                   
        abortAdminService(context, port);
        logFine("Aborted admin service");
                                              
        // Abort the server.
        System.exit(1);
    
private booleaninitializeASSocketService()
This method does the following:
  • Checks if the class sun.nio.ch.DefaultSelectorProvider is present and its "create()" method is callable
  • Sets the system property that defines our impl of a SelectorProvider
  • Creates and sets the SocketImplFactories for ServerSocket and Socket
If a problem occurs in any of the above steps, we simply assume that we should use the default startup behavior and proceed

	if ( isQuickStartupEnabled()) {
	    // Set the NIO SelectorProvider impl property
	    System.setProperty(SELECTOR_PROVIDER_PROP, 
			       AS_SELECTOR_PROVIDER);

	    // Set the SocketImplFactories for ServerSocket and Socket
	    // Note: if either of these factories was already set (almost
	    // impossible), an exception will be thrown and server will abort.
	    ServerSocket.setSocketFactory( new ASServerSocketFactory() );
	    Socket.setSocketImplFactory( new ASClientSocketFactory() );

	    return true;
	}
        return false;
    
private voidinitializeAdminService(com.sun.enterprise.server.ServerContext context)

        createAdminChannelLifecycle(); 
        adminlc.onInitialization(context);
    
public static booleanisQuickStartupEnabled()

	// enabled by default if system property absent
        String quickStartValue = System.getProperty(QUICK_STARTUP);
        String vmName = System.getProperty("java.vm.name", "");
        if (quickStartValue == null && vmName.contains(SERVER_VM_FLAG)){
            return false;
        }
	if ( quickStartValue == null || quickStartValue.equals("true") ) {
	    return areJDKClassesCreatable();
	}
	return false;	
    
private static voidlogFine(java.lang.String msg)

        if (logger.isLoggable(Level.FINE)) {
	    logger.fine( msg );
	}
    
private voidsetupInitialServices(com.sun.enterprise.server.ServerContext context)

	startAdminService( context );
    
private voidsetupSocketListeners(com.sun.enterprise.server.ServerContext scontext)


	ConfigContext ctxt = scontext.getConfigContext();
	conf = ServerBeansFactory.getConfigBean( ctxt );
	
	// Start HTTP listener ports
	HttpService httpService = conf.getHttpService();
        int backlog = 0;
        try {
            backlog = Integer.parseInt(
            httpService.getConnectionPool().getMaxPendingCount());
        } catch (Exception e) {
            logger.log(Level.WARNING, e.getMessage());
        }
	HttpListener[] httpListeners = httpService.getHttpListener();
	for ( int i=0; i<httpListeners.length; i++ ) {
	    if ( !httpListeners[i].isEnabled() )
		continue;
            startService(httpListeners[i], false, backlog);
	    logFine("Started ASSocketService for HTTP(S) ");
	}

	// Start IIOP listener ports
	IiopService iiopService = conf.getIiopService();
	IiopListener[] iiopListeners = iiopService.getIiopListener();
	for ( int i=0; i<iiopListeners.length; i++ ) {
	    if ( !iiopListeners[i].isEnabled() )
		continue;
            startService(iiopListeners[i]);
	    logFine("Started ASSocketService for IIOP(S)");
	}

	// Start JMX Connector ports
	AdminService adminService = conf.getAdminService();
	JmxConnector[] jmxConnectors = adminService.getJmxConnector();
	for ( int i=0; i<jmxConnectors.length; i++ ) {
	    if ( !jmxConnectors[i].isEnabled() )
		continue;
            startService(jmxConnectors[i], false, 0);
	    logFine("Started ASSocketService for JMX Connector ");
	}

        // Start MQ ports
        JmsService jmsService_ = conf.getJmsService();
        String defaultJmsHost = jmsService_.getDefaultJmsHost();
        JmsHost jmsHost_ = null;

        if (defaultJmsHost==null || defaultJmsHost.equals("")) {
            jmsHost_ = ServerBeansFactory.getJmsHostBean(ctxt);
        } else {
            jmsHost_ = jmsService_.getJmsHostByName(defaultJmsHost);
        }
        if (jmsService_.getType().equalsIgnoreCase("embedded") &&
            jmsHost_ != null && jmsHost_.isEnabled()) {
            ASSocketServiceConfig ssConfig = 
            new ASSocketServiceConfig(jmsHost_);
            ssConfig.setPortTag(ServerTags.PORT);
	    (new ASSocketService(ssConfig)).start();
	    logFine("Started ASSocketService for JMS ");
        }
    
public booleanstartASSocketServices(com.sun.enterprise.server.ServerContext context)



        
	try {
	    if ( initializeASSocketService() ) {
		logFine("STARTING ASSocketService");
                ASSocketService.initialize();
                initializeAdminService(context);
		setupSocketListeners(context);    
		setupInitialServices(context);
		logger.log( Level.INFO, "socketservice.init_done");
		return true;
	    } 
	    logFine("Not using ASSocketService. Proceeding with normal startup");
	} catch ( PortConflictException pex ) {
            logger.log(Level.SEVERE, "socketservice.port_conflict",  
                       new Object[]{String.valueOf(pex.getConflictedPort())});
            exitServer(context, pex.getConflictedPort());
	} catch ( Exception ex ) {

            logger.log(Level.SEVERE, "socketservice.unknown_ex", ex);
            exitServer(context,0);

        }
	return false;
    
private voidstartAdminService(com.sun.enterprise.server.ServerContext context)

        logFine( "About to start AdminService ");
        createAdminChannelLifecycle(); 
        adminlc.onStartup(context);
        adminlc.onReady(context);
    
private voidstartLifecycle(com.sun.appserv.server.ServerLifecycle lifecycle, com.sun.enterprise.server.ServerContext sc)

        lifecycle.onInitialization(sc);
        lifecycle.onStartup(sc);
        lifecycle.onReady(sc);
    
private voidstartService(com.sun.enterprise.config.ConfigBean bean)

        startService(bean,true,0);
    
private voidstartService(com.sun.enterprise.config.ConfigBean bean, boolean flag, int backlog)

        ASSocketServiceConfig ssConfig = 
        new ASSocketServiceConfig(bean);
        ssConfig.setAddressTag(ServerTags.ADDRESS);
        ssConfig.setPortTag(ServerTags.PORT);
        ssConfig.setStartSelector(flag);
        ssConfig.setBacklog(backlog);
	(new ASSocketService(ssConfig)).start();
    
private voidstopLifecycle(com.sun.appserv.server.ServerLifecycle lifecycle)

        try {
            lifecycle.onShutdown();
        } catch (Throwable t) {
            logger.log(Level.SEVERE, "socketservice.stop_lc_ex", t);
        }
        try {
            lifecycle.onTermination();
        } catch (Throwable t) {
            logger.log(Level.SEVERE, "socketservice.stop_lc_ex", t);
        }