MessageSecurityConfigEventListenerImpl.java

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// Portions Copyright [2016] [Payara Foundation]

package com.sun.enterprise.security.jmac;

import java.beans.PropertyChangeEvent;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.inject.Inject;
import javax.inject.Named;

import org.glassfish.api.StartupRunLevel;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.Changed;
import org.jvnet.hk2.config.ConfigBeanProxy;
import org.jvnet.hk2.config.ConfigListener;
import org.jvnet.hk2.config.ConfigSupport;
import org.jvnet.hk2.config.NotProcessed;
import org.jvnet.hk2.config.UnprocessedChangeEvents;

import com.sun.enterprise.config.serverbeans.MessageSecurityConfig;
import com.sun.enterprise.config.serverbeans.SecurityService;
import com.sun.enterprise.security.jmac.config.GFServerConfigProvider;
import com.sun.logging.LogDomains;

/**
* Listener class to handle admin message-security-config element events.
* @author Nithya Subramanian
*/

@Service
@RunLevel(StartupRunLevel.VAL)
public class MessageSecurityConfigEventListenerImpl implements ConfigListener {

    private static Logger logger = LogDomains.getLogger(MessageSecurityConfigEventListenerImpl.class,
            LogDomains.SECURITY_LOGGER, false);

    @Inject @Named(ServerEnvironment.DEFAULT_INSTANCE_NAME)
    private SecurityService service;

    /**
    * @param event - Event to be processed.
    * @throws AdminEventListenerException when the listener is unable to
    *         process the event.
    */
    public <T extends ConfigBeanProxy> NotProcessed handleUpdate(T instance) {
	NotProcessed np = null;
        if (logger.isLoggable(Level.FINE)) {
            logger.log(Level.FINE, "MessageSecurityConfigEventListenerImpl - " +
                    "handleUpdate called");
        }
	//Handle only the MessageSecurityConfig.
	if (instance instanceof MessageSecurityConfig) {
	    GFServerConfigProvider.loadConfigContext(service);
	} else {
	    np = new NotProcessed("unimplemented: unknown instance: "
		+ instance.getClass().getName());
	}
	return np;
    }

    /**
    * @param event  Event to be processed.
    * @throws AdminEventListenerException when the listener is unable to
    *         process the event.
    */
    public <T extends ConfigBeanProxy> NotProcessed handleDelete(T instance) {
	NotProcessed np = null;
        if (logger.isLoggable(Level.FINE)) {
            logger.log(Level.FINE, "MessageSecurityConfigEventListenerImpl - " +
		"handleDelete called");
        }
	if (instance instanceof MessageSecurityConfig) {
	    GFServerConfigProvider.loadConfigContext(service);
	} else {
	    np = new NotProcessed("unimplemented: unknown instance: "
		+ instance.getClass().getName());
	}
	return np;
    }

    /**
    * @param event Event to be processed.
    * @throws AdminEventListenerException when the listener is unable to
    *         process the event.
    */
    public <T extends ConfigBeanProxy> NotProcessed handleCreate(T instance) {
	NotProcessed np = null;
        if (logger.isLoggable(Level.FINE)) {
            logger.log(Level.FINE, "MessageSecurityConfigEventListenerImpl - " +
		"handleCreate called");
        }
	if (instance instanceof MessageSecurityConfig) {
	    GFServerConfigProvider.loadConfigContext(service);
	} else {
	    np = new NotProcessed("unimplemented: unknown instance: "
		+ instance.getClass().getName());
	}
	return np;
    }

    public UnprocessedChangeEvents changed(PropertyChangeEvent[] events) {
        ConfigSupport.sortAndDispatch(events, new Changed() {

	/**
	* Notification of a change on a configuration object
	* @param type type of change : ADD mean the changedInstance was added
	* to the parent REMOVE means the changedInstance was removed from
	* the parent, CHANGE means the changedInstance has mutated.
	* @param changedType type of the configuration object
	* @param changedInstance changed instance.
	*/
	public <T extends ConfigBeanProxy> NotProcessed changed(TYPE type,
		Class<T> changedType, T changedInstance) {
	    NotProcessed np = null;
	    switch (type) {
		case ADD:
		    logger.fine("A new " + changedType.getName() +
			    " was added : " + " " + changedInstance);
		    np = handleCreate(changedInstance);
		    break;
		case CHANGE:
		    logger.fine("A " + changedType.getName() +
			    " was changed : " + changedInstance);
		    np = handleUpdate(changedInstance);
		    break;
		case REMOVE:
		    logger.fine("A " + changedType.getName() +
			    " was removed : " + changedInstance);
		    np = handleDelete(changedInstance);
		    break;	    }
	    return np;
	}
    }, logger);

    return null;
    }
}