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// Portions Copyright [2019] Payara Foundation and/or affiliates

package com.sun.appserv.util.cache.mbeans;

import com.sun.appserv.util.cache.BaseCache;
import com.sun.appserv.util.cache.Constants;

/**
 * This class provides implementation for JmxBaseCacheMBean
 *
 * @author Krishnamohan Meduri ([email protected])
 * @since May 4, 2005
 * @version 1.4
 */
public class JmxBaseCache implements JmxBaseCacheMBean {

    private final String name;
    private final BaseCache baseCache;

    public JmxBaseCache(BaseCache baseCache, String name) {
        this.baseCache = baseCache;
        this.name = name;
    }
    /**
     * Returns a unique identifier for this MBean inside the domain
     */
    @Override
    public String getName() {
        return name;
    }

    /**
     * Returns maximum possible number of entries
     */
    @Override
    public Integer getMaxEntries() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_MAX_ENTRIES);
    }

    /**
     * Returns threshold. This when reached, an overflow will occur
     */
    @Override
    public Integer getThreshold() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_THRESHOLD);
    }

    /**
     * Returns current number of buckets
     */
    @Override
    public Integer getTableSize() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_TABLE_SIZE);
    }

    /**
     * Returns current number of Entries
     */
    @Override
    public Integer getEntryCount() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_ENTRY_COUNT);
    }

    /**
     * Return the number of cache hits
     */
    @Override
    public Integer getHitCount() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_HIT_COUNT);
    }

    /**
     * Returns the number of cache misses
     */
    @Override
    public Integer getMissCount() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_MISS_COUNT);
    }

    /**
     * Returns the number of entries that have been removed
     */
    @Override
    public Integer getRemovalCount() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_REMOVAL_COUNT);
    }

    /**
     * Returns the number of values that have been refreshed 
     * (replaced with a new value in an existing extry)
     */
    @Override
    public Integer getRefreshCount() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_REFRESH_COUNT);
    }

    /**
     * Returns the number of times that an overflow has occurred
     */
    @Override
    public Integer getOverflowCount() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_OVERFLOW_COUNT);
    }

    /**
     * Returns the number of times new entries have been added
     */
    @Override
    public Integer getAddCount() {
        return (Integer) baseCache.getStatByName(
                                        Constants.STAT_BASECACHE_ADD_COUNT);
    }
}