JMeter example source code file (GraphAccumModel.java)

This example JMeter source code file (GraphAccumModel.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - JMeter tags/keywords

end, end, graphaccummodel, graphaccummodel1, graphaccummodel1, io, iterator, linkedlist, list, list, returning, serializable, start, start, string, util

The JMeter GraphAccumModel.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.jmeter.visualizers;

import java.io.Serializable;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

import org.apache.jmeter.samplers.Clearable;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.log.Logger;

/**
 * The model that collects the average of the set of pages to be sampled.
 *
 */

public class GraphAccumModel implements Clearable, Serializable {
    private static final Logger log = LoggingManager.getLoggerForClass();

    private static final long serialVersionUID = 240L;

    private String name;

    private final List<SampleResult> samples;

    private final List<GraphAccumListener> listeners;

    private long max = 1;

    private boolean bigChange = false;

    private SampleResult current;

    /**
     * Constructor.
     */
    public GraphAccumModel() {
        log.debug("Start : GraphAccumModel1");
        listeners = new LinkedList<GraphAccumListener>();
        samples = Collections.synchronizedList(new LinkedList<SampleResult>());
        log.debug("End : GraphAccumModel1");
    }

    /**
     * Sets the Name attribute of the GraphModel object.
     *
     * @param name
     *            the new Name value
     */
    public void setName(String name) {
        this.name = name;
    }

    /**
     * Gets the SampleCount attribute of the GraphAccumModel object.
     *
     * @return the SampleCount value
     */
    public int getSampleCount() {
        return samples.size();
    }

    /**
     * Gets the List attribute of the GraphAccumModel object.
     *
     * @return the List value
     */
    public List<SampleResult> getList() {
        return samples;
    }

    /**
     * Gets the Name attribute of the GraphModel object.
     *
     * @return the Name value
     */
    public String getName() {
        return name;
    }

    /**
     * Gets the Max attribute of the GraphAccumModel object.
     *
     * @return the Max value
     */
    public long getMax() {
        if (log.isDebugEnabled()) {
            log.debug("getMax1 : Returning - " + max);
        }
        return max;
    }

    /**
     * Adds a feature to the ModelListener attribute of the GraphAccumModel
     * object.
     *
     * @param listener
     *            the feature to be added to the GraphAccumListener attribute.
     */
    public void addGraphAccumListener(GraphAccumListener listener) {
        listeners.add(listener);
    }

    /**
     * Clear the results.
     */
    public void clearData() {
        log.debug("Start : clear1");
        samples.clear();
        max = 1;
        bigChange = true;
        this.fireDataChanged();
        log.debug("End : clear1");
    }

    /**
     * Add the new sample to the results.
     *
     * @param res
     *            sample containing the results
     */
    public void addNewSample(SampleResult res) {
        log.debug("Start : addNewSample1");
        // Set time to time taken to load this url without components (e.g.
        // images etc)
        long totalTime = res.getTime();

        if (log.isDebugEnabled()) {
            log.debug("addNewSample1 : time - " + totalTime);
            log.debug("addNewSample1 : max - " + max);
        }
        if (totalTime > max) {
            bigChange = true;
            max = totalTime;
        }
        current = res;
        samples.add(res);
        log.debug("End : addNewSample1");
        fireDataChanged();
    }

    /**
     * Depending on whether the graph needs to be rescale call the appropriate
     * methods.
     */
    protected void fireDataChanged() {
        log.debug("Start : fireDataChanged1");
        Iterator<GraphAccumListener> iter = listeners.iterator();

        if (bigChange) {
            while (iter.hasNext()) {
                iter.next().updateGui();
            }
            bigChange = false;
        } else {
            quickUpdate(current);
        }
        log.debug("End : fireDataChanged1");
    }

    /**
     * The sample to be added did not exceed the current set of samples so do
     * not need to rescale graph.
     */
    protected void quickUpdate(SampleResult s) {
        Iterator<GraphAccumListener> iter = listeners.iterator();
        {
            while (iter.hasNext()) {
                iter.next().updateGui(s);
            }
        }
    }
}