com.sun.grizzly.http.embed.Statistics Maven / Gradle / Ivy
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the license at
* https://glassfish.dev.java.net/public/CDDLv1.0.html or
* glassfish/bootstrap/legal/CDDLv1.0.txt.
* See the License for the specific language governing
* permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at glassfish/bootstrap/legal/CDDLv1.0.txt.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* you own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
*/
package com.sun.grizzly.http.embed;
import com.sun.grizzly.http.KeepAliveStats;
import com.sun.grizzly.http.LinkedListPipeline;
import com.sun.grizzly.http.PipelineStatistic;
import com.sun.grizzly.http.SelectorThread;
import com.sun.grizzly.tcp.RequestGroupInfo;
/**
* This class can be used to monitor the {@link GrizzlyWebServer}. The statistics
* available from this class are:
{@link PipelineStatistic}: Statistics about
* the thread pool (called {@link Pipeline} in Grizzly), {@link LinkedListPipeline}.
* - {@link KeepAliveStats}: Statistic about how the http keep-alive mechanism like
* how many times a connection was re-used, how many request were using http 1.1 keep-alive,
* etc.
- {@link RequestGroupInfo}: Statistics about how many connection are
* currently supported by Grizzly, how many many bytes has been read so far, how many
* http request with status code of 200, 404, etc.
*
* To use this class, just do:
GrizzlyWebServer ws = new GrizzlyWebServer("/var/www");
Statistics stats = ws.getStatistic();
stats.startGatheringStatistics();
ws.start();
*
*
* @author Jeanfrancois Arcand
*/
public class Statistics {
/**
* The underlying SelectorThread.
*/
private SelectorThread st;
/**
* Are we gathering
*/
private boolean isGathering = false;
/**
* Create a Statistic class powered uner the hood by the {@link SelectorThread}.
* @param st the {@link SelectorThread}
*/
protected Statistics(SelectorThread st){
this.st=st;
}
/**
* Return an instance of {@link PipelineStatistic}, which gather information
* about the current thread pool used by Grizzly.
* @return an instance of {@link PipelineStatistic}, which gather information
* about the current thread pool used by Grizzly.
*/
public PipelineStatistic getThreadPoolStatistics(){
return ((LinkedListPipeline)st.getProcessorPipeline())
.getPipelineStatistic();
}
/**
* Return an instance of {@link KeepAliveStats} , which gather information
* about the connection and the keep-alive mechanism.
* @return an instance of {@link KeepAliveStats} , which gather information
* about the connection and the keep-alive mechanism.
*/
public KeepAliveStats getKeepAliveStatistics(){
return st.getKeepAliveStats();
}
/**
* Return an instance of {@link RequestGroupInfo} , which gather information
* about all the requests made to Grizzly.
* @return an instance of {@link RequestGroupInfo} , which gather information
* about all the requests made to Grizzly.
*/
public RequestGroupInfo getRequestStatistics(){
return st.getRequestGroupInfo();
}
/**
* Start gathering statistics.
*/
public void startGatheringStatistics(){
if (isGathering) return;
isGathering = true;
st.enableMonitoring();
}
/**
* Stop gathering statistics.
*/
public void stopGatheringStatistics(){
if (!isGathering) return;
isGathering = false;
st.disableMonitoring();
}
}