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package com.sun.enterprise.web.stats;
import java.util.ArrayList;
import java.util.logging.Logger;
import java.util.logging.Level;
import java.text.MessageFormat;
import javax.management.ObjectName;
import javax.management.MBeanServerFactory;
import javax.management.MBeanServer;
import javax.management.j2ee.statistics.CountStatistic;
import javax.management.j2ee.statistics.Statistic;
import com.sun.logging.LogDomains;
import com.sun.enterprise.admin.monitor.stats.PWCFileCacheStats;
import com.sun.enterprise.admin.monitor.stats.MutableCountStatistic;
import com.sun.enterprise.admin.monitor.stats.MutableCountStatisticImpl;
import com.sun.enterprise.admin.monitor.stats.GenericStatsImpl;
import com.sun.enterprise.admin.monitor.stats.CountStatisticImpl;
/**
* <code>FileCache</code> monitoring support.
*
* @author Jeanfrancois Arcand
*/
public class PWCFileCacheStatsImpl implements PWCFileCacheStats {
private final static Logger logger
= LogDomains.getLogger(LogDomains.WEB_LOGGER);
private GenericStatsImpl baseStatsImpl;
private ObjectName fileCacheName;
private MBeanServer server;
private MutableCountStatistic flagEnabled;
private MutableCountStatistic secondsMaxAge;
private MutableCountStatistic countEntries;
private MutableCountStatistic maxEntries;
private MutableCountStatistic countOpenEntries;
private MutableCountStatistic maxOpenEntries;
private MutableCountStatistic sizeHeapCache;
private MutableCountStatistic maxHeapCacheSize;
private MutableCountStatistic sizeMmapCache;
private MutableCountStatistic maxMmapCacheSize;
private MutableCountStatistic countHits;
private MutableCountStatistic countMisses;
private MutableCountStatistic countInfoHits;
private MutableCountStatistic countInfoMisses;
private MutableCountStatistic countContentHits;
private MutableCountStatistic countContentMisses;
public PWCFileCacheStatsImpl(String domain) {
baseStatsImpl = new GenericStatsImpl(
com.sun.enterprise.admin.monitor.stats.PWCFileCacheStats.class,
this);
// get an instance of the MBeanServer
ArrayList servers = MBeanServerFactory.findMBeanServer(null);
if(!servers.isEmpty())
server = (MBeanServer)servers.get(0);
else
server = MBeanServerFactory.createMBeanServer();
String objNameStr = domain + ":type=PWCFileCache,*";
try {
fileCacheName = new ObjectName(objNameStr);
} catch (Throwable t) {
String msg = logger.getResourceBundle().getString(
"webcontainer.objectNameCreationError");
msg = MessageFormat.format(msg, new Object[] { objNameStr });
logger.log(Level.SEVERE, msg, t);
}
// initialize all the MutableStatistic Classes
initializeStatistics();
}
/**
* Returns flag indicating whether file cache has been enabled
* @return 1 if file cache has been enabled, 0 otherwise
*/
public CountStatistic getFlagEnabled() {
flagEnabled.setCount(
StatsUtil.getMaxStatistic(server, fileCacheName,"flagEnabled"));
return (CountStatistic)flagEnabled.unmodifiableView();
}
/**
* Return the maximum age of a valid cache entry
* @return cache entry maximum age
*/
public CountStatistic getSecondsMaxAge() {
secondsMaxAge.setCount(
StatsUtil.getMaxStatistic(server, fileCacheName,"secondsMaxAge"));
return (CountStatistic)secondsMaxAge.unmodifiableView();
}
/**
* Return the number of current cache entries.
*/
public CountStatistic getCountEntries() {
countEntries.setCount(getAggregateLong("countEntries"));
return (CountStatistic)countEntries.unmodifiableView();
}
/**
* Return the maximum number of cache entries
*/
public CountStatistic getMaxEntries() {
maxEntries.setCount(
StatsUtil.getMaxStatistic(server, fileCacheName,"maxEntries"));
return (CountStatistic)maxEntries.unmodifiableView();
}
/**
* Return the number of current open cache entries
* @return open cache entries
*/
public CountStatistic getCountOpenEntries() {
countOpenEntries.setCount(getAggregateLong("countOpenEntries"));
return (CountStatistic)countOpenEntries.unmodifiableView();
}
/**
* The Maximum number of open cache entries
*/
public CountStatistic getMaxOpenEntries() {
maxOpenEntries.setCount(
StatsUtil.getMaxStatistic(server, fileCacheName,"maxOpenEntries"));
return (CountStatistic)maxOpenEntries.unmodifiableView();
}
/**
* The Heap space used for cache
* @return heap size
*/
public CountStatistic getSizeHeapCache() {
sizeHeapCache.setCount(
StatsUtil.getMaxLongStatistic(server,
fileCacheName,"sizeHeapCache"));
return (CountStatistic)sizeHeapCache.unmodifiableView();
}
/**
* Return he Maximum heap space used for cache
*/
public CountStatistic getMaxHeapCacheSize() {
maxHeapCacheSize.setCount(
StatsUtil.getMaxLongStatistic(server,
fileCacheName,"maxHeapCacheSize"));
return (CountStatistic)maxHeapCacheSize.unmodifiableView();
}
/**
* Return he size of Mapped memory used for caching
*/
public CountStatistic getSizeMmapCache() {
sizeMmapCache.setCount(
StatsUtil.getMaxLongStatistic(server,
fileCacheName,"sizeMmapCache"));
return (CountStatistic)sizeMmapCache.unmodifiableView();
}
/**
* Return the Maximum Memory Map size to be used for caching
*/
public CountStatistic getMaxMmapCacheSize() {
maxMmapCacheSize.setCount(
StatsUtil.getMaxLongStatistic(server,
fileCacheName,"maxMmapCacheSize"));
return (CountStatistic)maxMmapCacheSize.unmodifiableView();
}
/**
* Return he Number of cache lookup hits
*/
public CountStatistic getCountHits() {
countHits.setCount(getAggregateLong("countHits"));
return (CountStatistic)countHits.unmodifiableView();
}
/**
* Return the Number of cache lookup misses
*/
public CountStatistic getCountMisses() {
countMisses.setCount(getAggregateLong("countMisses"));
return (CountStatistic)countMisses.unmodifiableView();
}
/**
* Return the Number of hits on cached file info
*/
public CountStatistic getCountInfoHits() {
countInfoHits.setCount(getAggregateLong("countInfoHits"));
return (CountStatistic)countInfoHits.unmodifiableView();
}
/**
* The Number of misses on cached file info
* @return misses on cache file info
*/
public CountStatistic getCountInfoMisses() {
countInfoMisses.setCount(getAggregateLong("countInfoMisses"));
return (CountStatistic)countInfoMisses.unmodifiableView();
}
/**
* Return the Number of hits on cached file content
*/
public CountStatistic getCountContentHits() {
countContentHits.setCount(getAggregateLong("countContentHits"));
return (CountStatistic)countContentHits.unmodifiableView();
}
/**
* Return the Number of misses on cached file content
*/
public CountStatistic getCountContentMisses() {
countContentMisses.setCount(getAggregateLong("countContentMisses"));
return (CountStatistic)countContentMisses.unmodifiableView();
}
/**
* This is an implementation of the mandatory JSR77 Stats
* interface method.
* Here we simply delegate it to the GenericStatsImpl object
* that we have
*/
public Statistic[] getStatistics() {
return baseStatsImpl.getStatistics();
}
public Statistic getStatistic( String str ) {
return baseStatsImpl.getStatistic( str );
}
public String[] getStatisticNames() {
return baseStatsImpl.getStatisticNames();
}
/**
* This method initialize statistics.
*/
private void initializeStatistics() {
CountStatistic cs = null;
//enabled?
cs = new CountStatisticImpl("FlagEnabled");
flagEnabled = new MutableCountStatisticImpl( cs );
//seconds Max Age
cs = new CountStatisticImpl("SecondsMaxAge");
secondsMaxAge = new MutableCountStatisticImpl( cs );
//count entries
cs = new CountStatisticImpl("CountEntries");
countEntries = new MutableCountStatisticImpl( cs );
//maxEntries
cs = new CountStatisticImpl("MaxEntries");
maxEntries = new MutableCountStatisticImpl( cs );
//Open Entries
cs = new CountStatisticImpl("CountOpenEntries");
countOpenEntries = new MutableCountStatisticImpl( cs );
//Max Open Entries
cs = new CountStatisticImpl("MaxOpenEntries");
maxOpenEntries = new MutableCountStatisticImpl( cs );
// heap cache size
cs = new CountStatisticImpl("SizeHeapCache");
sizeHeapCache = new MutableCountStatisticImpl( cs );
//max heap cache size
cs = new CountStatisticImpl("MaxHeapCacheSize");
maxHeapCacheSize = new MutableCountStatisticImpl( cs );
//Mmap cache size
cs = new CountStatisticImpl("SizeMmapCache");
sizeMmapCache = new MutableCountStatisticImpl( cs );
//Max Mmap cache size
cs = new CountStatisticImpl("MaxMmapCacheSize");
maxMmapCacheSize = new MutableCountStatisticImpl( cs );
//count hits
cs = new CountStatisticImpl("CountHits");
countHits = new MutableCountStatisticImpl( cs );
//count Misses
cs = new CountStatisticImpl("CountMisses");
countMisses = new MutableCountStatisticImpl( cs );
//count Info Hits
cs = new CountStatisticImpl("CountInfoHits");
countInfoHits = new MutableCountStatisticImpl( cs );
//count Info Misses
cs = new CountStatisticImpl("CountInfoMisses");
countInfoMisses = new MutableCountStatisticImpl( cs );
//content hits
cs = new CountStatisticImpl("CountContentHits");
countContentHits = new MutableCountStatisticImpl( cs );
//content misses
cs = new CountStatisticImpl("CountContentMisses");
countContentMisses = new MutableCountStatisticImpl( cs );
}
/**
* Get Aggregated int statistics.
*/
private final int getAggregateInt(String attribute){
return StatsUtil.getAggregateStatistic(server,fileCacheName,attribute);
}
/**
* Get Aggregated long statistics.
*/
private final long getAggregateLong(String attribute){
return StatsUtil.
getAggregateLongStatistic(server,fileCacheName,attribute);
}
}