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package com.sun.xml.ws.transport.tcp.server.glassfish;

import com.sun.appserv.server.LifecycleEvent;
import com.sun.appserv.server.LifecycleListener;
import com.sun.appserv.server.ServerLifecycleException;
import com.sun.istack.NotNull;
import com.sun.xml.ws.transport.tcp.grizzly.GrizzlyTCPConnector;
import com.sun.xml.ws.transport.tcp.server.*;
import com.sun.xml.ws.transport.tcp.resources.MessagesMessages;
import java.util.List;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * GlassFish lifecycle module, which works as SOAP/TCP endpoints registry.
 *
 * @author Alexey Stashok
 */

public final class WSTCPLifeCycleModule implements LifecycleListener {
    private static WSTCPLifeCycleModule instance;
    
    private static final Logger logger = Logger.getLogger(
            com.sun.xml.ws.transport.tcp.util.TCPConstants.LoggingDomain + ".server");
    
    private WSTCPConnector connector;
    private WSTCPDelegate delegate;
    private Properties properties;
    
    /**
     * Method returns initialized WSTCPLifeCycleModule instance
     * @throws IllegalStateException if instance was not initialized
     */
    public static @NotNull WSTCPLifeCycleModule getInstance() {
        if (instance == null) {
            throw new IllegalStateException(MessagesMessages.WSTCP_0007_TRANSPORT_MODULE_NOT_INITIALIZED());
        }
        
        return instance;
    }
    
    public void handleEvent(@NotNull final LifecycleEvent lifecycleEvent) throws ServerLifecycleException {
        final int eventType = lifecycleEvent.getEventType();
        if (eventType == LifecycleEvent.INIT_EVENT) {
            instance = this;
            logger.log(Level.FINE, "WSTCPLifeCycleModule.INIT_EVENT");
            properties = (Properties) lifecycleEvent.getData();
        } else if (eventType == LifecycleEvent.STARTUP_EVENT) {
            logger.log(Level.FINE, "WSTCPLifeCycleModule.STARTUP_EVENT");
            delegate = new WSTCPDelegate();
        } else if (eventType == LifecycleEvent.READY_EVENT) {
            logger.log(Level.FINE, "WSTCPLifeCycleModule.READY_EVENT");
            try {
                delegate.setCustomWSRegistry(WSTCPAdapterRegistryImpl.getInstance());
                connector = new GrizzlyTCPConnector(delegate, properties);
                connector.listen();
                
                
            } catch (Exception e) {
                logger.log(Level.SEVERE, e.getMessage(), e);
            }
        } else if (eventType == LifecycleEvent.SHUTDOWN_EVENT) {
            logger.log(Level.FINE, "WSTCPLifeCycleModule.SHUTDOWN_EVENT");
            instance = null;
            
            if (delegate != null) {
                delegate.destroy();
            }
            
            if (connector != null) {
                connector.close();
            }
            
        }
    }
    
    public void register(@NotNull final String contextPath,
            @NotNull final List<TCPAdapter> adapters) {
        delegate.registerAdapters(contextPath, adapters);
    }
    
    public void free(@NotNull final String contextPath,
            @NotNull final List<TCPAdapter> adapters) {
        delegate.freeAdapters(contextPath, adapters);
    }
}