rendezvousmeter.java

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

/*
 * Copyright (c) 2001 Sun Micro//Systems, 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:
 *
 * 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 Micro//Systems, 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
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL SUN MICRO//SystemS OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * 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: RendezvousMeter.java,v 1.6 2004/05/18 19:22:07 bondolo Exp $
 */

package net.jxta.impl.rendezvous.rendezvousMeter;


import net.jxta.peer.*;
import net.jxta.peergroup.*;
import net.jxta.rendezvous.*;
import net.jxta.impl.rendezvous.*;
import java.net.*;
import java.util.*;


/**
 The Meter corresponding to the state and aggregate information of a Rendezvous Service
 **/
public class RendezvousMeter {
    private RendezvousMetric cumulativeMetrics;
    private RendezvousMetric deltaMetrics;

    private long transitionTime = System.currentTimeMillis();

    public RendezvousMeter() {
        cumulativeMetrics = new RendezvousMetric(null);
    }

    public RendezvousMetric getCumulativeMetrics() { 
        return cumulativeMetrics; 
    }

    public synchronized RendezvousMetric collectMetrics() {	
        RendezvousMetric prevDelta = deltaMetrics;

        deltaMetrics = null;

        return prevDelta;
    }

    private void createDeltaMetric() {
        deltaMetrics = new RendezvousMetric(cumulativeMetrics);
    }

    public String toString() {
        return "RendezvousMeter";
    }

    public void startEdge() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        transitionTime = System.currentTimeMillis();
        deltaMetrics.startEdge(transitionTime);
        cumulativeMetrics.startEdge(transitionTime);
    }
	
    public void stopEdge() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        long now = System.currentTimeMillis();
        long timeAsEdge = now - transitionTime;
		
        transitionTime = now;

        if (!cumulativeMetrics.isEdge()) {
            timeAsEdge = 0;
        }
		
        deltaMetrics.stopEdge(now, timeAsEdge);
        cumulativeMetrics.stopEdge(now, timeAsEdge);
    }

    public void startRendezvous() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        transitionTime = System.currentTimeMillis();
        deltaMetrics.startRendezvous(transitionTime);
        cumulativeMetrics.startRendezvous(transitionTime);
    }

    public void stopRendezvous() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        long now = System.currentTimeMillis();
        long timeAsRendezvous = cumulativeMetrics.isRendezvous() ? (now - transitionTime) : 0;
		
        transitionTime = now;

        deltaMetrics.stopRendezvous(now, timeAsRendezvous);
        cumulativeMetrics.stopRendezvous(now, timeAsRendezvous);
    }

    public void invalidMessageReceived() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.invalidMessageReceived();
        cumulativeMetrics.invalidMessageReceived();
    }

    public void receivedMessageProcessedLocally() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.receivedMessageProcessedLocally();
        cumulativeMetrics.receivedMessageProcessedLocally();
    }

    public void receivedMessageRepropagatedInGroup() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.receivedMessageRepropagatedInGroup();
        cumulativeMetrics.receivedMessageRepropagatedInGroup();
    }

    public void receivedDeadMessage() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.receivedDeadMessage();
        cumulativeMetrics.receivedDeadMessage();
    }

    public void receivedLoopbackMessage() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.receivedLoopbackMessage();
        cumulativeMetrics.receivedLoopbackMessage();
    }

    public void receivedDuplicateMessage() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.receivedDuplicateMessage();
        cumulativeMetrics.receivedDuplicateMessage();
    }

    public void propagateToPeers(int numPeers) {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.propagateToPeers(numPeers);
        cumulativeMetrics.propagateToPeers(numPeers);
    }

    public void propagateToNeighbors() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.propagateToNeighbors();
        cumulativeMetrics.propagateToNeighbors();
    }
	
    public void propagateToNeighborsFailed() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.propagateToNeighborsFailed();
        cumulativeMetrics.propagateToNeighborsFailed();
    }

    public void propagateToGroup() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.propagateToGroup();
        cumulativeMetrics.propagateToGroup();
    }

    public void walk() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.walk();
        cumulativeMetrics.walk();
    }

    public void walkFailed() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.walkFailed();
        cumulativeMetrics.walkFailed();
    }

    public void walkToPeers(int numPeers) {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.walkToPeers(numPeers);
        cumulativeMetrics.walkToPeers(numPeers);
    }

    public void walkToPeersFailed() {
        if (deltaMetrics == null) {	
            createDeltaMetric();
        }

        deltaMetrics.walkToPeersFailed();
        cumulativeMetrics.walkToPeersFailed();
    }
}