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 *
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 * and Distribution License("CDDL") (collectively, 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/CDDL+GPL_1_1.html
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package com.sun.enterprise.admin.monitor.stats;

/**
 *
 * @author  nsegura
 */

import org.glassfish.j2ee.statistics.Stats;
import org.glassfish.j2ee.statistics.CountStatistic;

/** 
 * Provides statistical information about the HttpService HTTP-level keep-alive
 * system
 */
public interface PWCKeepAliveStats extends Stats {
    
    /** 
     * Number of connections in keep-alive mode
     * @return number of connections
     */    
    public CountStatistic getCountConnections();
    
    /** 
     * Maximum number of connections allowed in keep-alive mode simultaneously
     * @return Max number of connections allowed
     */    
    public CountStatistic getMaxConnections();
    
    /** 
     * The number of times a request was successfully received from a 
     * connection that had been kept alive
     * @return hits
     */    
    public CountStatistic getCountHits();
    
    /** 
     * The number of times the server had to close a connection because the
     * KeepAliveCount exceeded the MaxKeepAliveConnections
     * @return connections
     */    
    public CountStatistic getCountFlushes();
    
    /** 
     * The number of times the server could not hand off the connection to a 
     * keep-alive thread, possibly due to too many persistent connections
     * @return refusals
     */    
    public CountStatistic getCountRefusals();
    
    /** 
     * The number of times the server terminated keep-alive connections as the 
     * client connections timed out, without any activity
     * @return connections timed out
     */    
    public CountStatistic getCountTimeouts();
    
    /** 
     * The time (in seconds) before idle keep-alive connections are closed
     * @return time in seconds
     */    
    public CountStatistic getSecondsTimeouts();
    
}