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/*
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 *
 * Copyright (c) 1997-2011 Oracle and/or its affiliates. All rights reserved.
 *
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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
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
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// Portions Copyright [2019] Payara Foundation and/or affiliates

package com.sun.enterprise.admin.monitor.stats;

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

/** 
 * Defines additional Sun ONE Application Server specific statistics 
 * ServletStats interface.
 * The ServletStats interface that is defined by JSR77, cannot be used
 * here, as it is not possible to encapsulate the data pertaining to 
 * the service method in a TimeStatistic. Therefore it becomes necessary
 * to define our own interface for exposing Servlet Statistics.
 * @since S1AS8.0
 */
public interface ServletStats extends Stats {
    
    /**
     * Number of requests processed by this servlet.
     * @return CountStatistic
     */
    public CountStatistic getRequestCount();
    
    /**
     * Cumulative Value, indicating the time taken to process the
     * requests received so far.
     * @return CountStatistic
     */
    public CountStatistic getProcessingTime();
    
    /**
     * Gets the execution time of the servlet's service method.
     *
     * This method is identical in functionality to getProcessingTime(),
     * except that it exposes the execution time of the servlet's service
     * method under the JSR 77 compliant property name and type.
     *
     * @return Execution time of the servlet's service method
     */
    public TimeStatistic getServiceTime();

    /**
     * The maximum processing time of a servlet request
     * @return CountStatistic
     */
    public CountStatistic getMaxTime();
    
    /**
     * The errorCount represents the number of cases where the response 
     * code was >= 400
     * @return CountStatistic
     */
    public CountStatistic getErrorCount();
    
}