propagationmetric.java

jxta_src_2.41b jxta 2.41b 最新版源码 from www.jxta.org

/*
 * Copyright (c) 2001 Sun Microsystems, Inc.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *       Sun Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
 *    permission of Sun.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: PropagationMetric.java,v 1.3 2003/05/14 01:08:12 iam Exp $
 */

 package net.jxta.impl.endpoint.endpointMeter;

import net.jxta.endpoint.*;
import net.jxta.impl.endpoint.*;
import net.jxta.util.documentSerializable.*;
import net.jxta.document.*;

import java.util.*;

/**
  *    Metric corresponding to a propagated messages 
  *    Meter corresponding to propagated to a ServiceName/ServiceParam pair
  **/
public class PropagationMetric implements DocumentSerializable {
	private String serviceName;
	private String serviceParameter;

	private String serviceIdString;	// for Hashing
	int numPropagations;
	int numPropagatedTo;
	int numFilteredOut;
	int numErrorsPropagated;
	long propagationTime;

	public PropagationMetric() {
		serviceIdString = serviceName + serviceParameter;		
	}

	public PropagationMetric(PropagationMeter propagationMeter) {
		this.serviceName = propagationMeter.getServiceName();
		this.serviceParameter = propagationMeter.getServiceParameter();

		serviceIdString = serviceName + serviceParameter;		
	}

	public PropagationMetric(PropagationMetric prototype) {
		this.serviceName = prototype.getServiceName();
		this.serviceParameter = prototype.getServiceParameter();

		serviceIdString = serviceName + serviceParameter;		
	}

	void registerPropagateMessageStats(int numPropagatedTo, int numFilteredOut, int numErrorsPropagated, long propagationTime) {
		this.numPropagations++;
		this.numPropagatedTo += numPropagatedTo;
		this.numFilteredOut += numFilteredOut;
		this.numErrorsPropagated += numErrorsPropagated;
		this.propagationTime += propagationTime;
	}


	/** The Endpoint address for this outbound message queue **/
	public String getServiceName() { return serviceName; }
	/** The Endpoint address for this outbound message queue **/
	public String getServiceParameter() { return serviceParameter; }
	/** The Number of Propagated Messages  **/
	public int getNumPropagations() {return numPropagations;}
	/** Total number of transports messagess were propagated to  **/
	public int getNumPropagatedTo() {return numPropagatedTo;}
	/** The Number of Filtered out  Messages  **/
	/** The Average of number of Transports propagated To from propagation to transport **/
	public int getAverageNumTransports() {return (numPropagatedTo == 0) ? 0 : (numPropagations / numPropagatedTo);}
	public int getNumFilteredOut() {return numFilteredOut;}
	/** The Number of Errors propagating Messages  **/
	public int getNumErrorsPropagated() {return numErrorsPropagated;}
	/** The Sum of (clock) times from propagation to transport **/
	public long getPropagationTime() {return propagationTime;}
	/** The Average of (clock) times from propagation to transport **/
	public long getAveragePropagationTime() {return (numPropagatedTo == 0) ? 0 : (propagationTime / numPropagatedTo);}

	public boolean equals(Object obj) {
		
		if (obj instanceof PropagationMetric) {
			PropagationMetric other = (PropagationMetric) obj;
			
			return serviceIdString.equals(other.serviceIdString);
		} else
			return false;
	}

	public boolean matches(String serviceName, String serviceParam) {
		if(serviceName.equals(getServiceName())) {
			if(serviceParam == null && getServiceParameter() == null) {
				return true;
			} else if(serviceParam != null && getServiceParameter() != null) {
				return serviceParam.equals(getServiceParameter());
			}
		}
		return false;
	}
	
	public int hashCode() { return serviceIdString.hashCode(); }

	String getServiceIdString() { return serviceIdString; }	

	public void mergeMetrics(PropagationMetric other) {
		numPropagatedTo += other.numPropagatedTo;
		numFilteredOut += other.numFilteredOut;
		numErrorsPropagated += other.numErrorsPropagated;
		propagationTime += other.propagationTime;
	}	

	public void serializeTo(Element element) throws DocumentSerializationException {

		DocumentSerializableUtilities.addString(element, "serviceName", serviceName);
		DocumentSerializableUtilities.addString(element, "serviceParam", serviceParameter);

		if (numPropagations != 0)
			DocumentSerializableUtilities.addInt(element, "numPropagations", numPropagatedTo);
		
		if (numPropagatedTo != 0)
			DocumentSerializableUtilities.addInt(element, "numPropagatedTo", numPropagatedTo);
		
		if (numFilteredOut != 0)
			DocumentSerializableUtilities.addInt(element, "numFilteredOut", numFilteredOut);
		
		if (numErrorsPropagated != 0)
			DocumentSerializableUtilities.addInt(element, "numErrorsPropagated", numErrorsPropagated);
		
		if (propagationTime != 0)
			DocumentSerializableUtilities.addLong(element, "propagationTime", propagationTime);
	}

	public void initializeFrom(Element element) throws DocumentSerializationException {
		for (Enumeration e=element.getChildren(); e.hasMoreElements(); ) {
			Element childElement = (TextElement) e.nextElement();
			String tagName = (String) childElement.getKey();
			
			if (tagName.equals("serviceName")) 
				serviceName = DocumentSerializableUtilities.getString(childElement);	
			else if (tagName.equals("serviceParam")) 
				serviceParameter = DocumentSerializableUtilities.getString(childElement);	
			else if (tagName.equals("numPropagations"))
				numPropagations = DocumentSerializableUtilities.getInt(childElement);
			else if (tagName.equals("numPropagatedTo"))
				numPropagatedTo = DocumentSerializableUtilities.getInt(childElement);
			else if (tagName.equals("numFilteredOut"))
				numFilteredOut = DocumentSerializableUtilities.getInt(childElement);
			else if (tagName.equals("propagationTime"))
				propagationTime = DocumentSerializableUtilities.getLong(childElement);
			else if (tagName.equals("numErrorsPropagated"))
				numErrorsPropagated = DocumentSerializableUtilities.getInt(childElement);
		}

		serviceIdString = serviceName + serviceParameter;		
	}
}