package cz.cuni.amis.pogamut.base.utils.logging.jmx;
   
   import cz.cuni.amis.pogamut.base.utils.logging.LogCategory;
   import java.io.IOException;
   import java.util.logging.LogRecord;
   import javax.management.InstanceNotFoundException;
   import javax.management.MBeanServerConnection;
   import javax.management.Notification;
   import javax.management.NotificationListener;
  import javax.management.ObjectName;
  
  /**
   * Proxies a single log category, intended to be used only for registering handlers.
   * TODO what to do when user logs a message on this instance? throw exception?
   * @author ik
   */
  public class LogCategoryJMXProxy extends LogCategory {
  
      ObjectName categoryObjectName = null;
  	private MBeanServerConnection mbsc;
  
      public LogCategoryJMXProxy(MBeanServerConnection mbsc, ObjectName parent, String categoryName) throws InstanceNotFoundException, IOException {
          super(categoryName);
          categoryObjectName = JMXLogCategories.getJMXLogCategoryName(parent, categoryName);
          this.mbsc = mbsc;
      }
      
      public void enableLogReading() throws InstanceNotFoundException, IOException {
      	// add notification listener
          mbsc.addNotificationListener(categoryObjectName, new NotificationListener() {
  
              @Override
              public void handleNotification(Notification notification, Object handback) {
                  // user data is by convention in JMXLogRecordContainer 
                  // because of trouble with serialializing parameters of a LogRecord
                  JMXLogRecordContainer container = (JMXLogRecordContainer)notification.getUserData();
                  //container.printInfo();
  
                  log(container.getRecordWithParameters());
              }
          }, null, null);
      }
      
  }