net.sf.ehcache.hibernate.management.impl.CacheRegionStats Maven / Gradle / Ivy
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Ehcache is an open source, standards-based cache used to boost performance,
offload the database and simplify scalability. Ehcache is robust, proven and full-featured and
this has made it the most widely-used Java-based cache.
/**
* Copyright Terracotta, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.sf.ehcache.hibernate.management.impl;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.openmbean.CompositeType;
import javax.management.openmbean.OpenDataException;
import javax.management.openmbean.OpenType;
import javax.management.openmbean.SimpleType;
import javax.management.openmbean.TabularData;
import javax.management.openmbean.TabularDataSupport;
import javax.management.openmbean.TabularType;
import org.hibernate.stat.SecondLevelCacheStatistics;
/**
* @author gkeim
*
*/
public class CacheRegionStats implements Serializable {
private static final String COMPOSITE_TYPE_NAME = "CacheRegionStats";
private static final String COMPOSITE_TYPE_DESCRIPTION = "Statistics per Cache-region";
private static final String[] ITEM_NAMES = new String[] {"region", "shortName", "hitCount",
"missCount", "putCount", "hitRatio", "elementCountInMemory", "elementCountOnDisk", "elementCountTotal", };
private static final String[] ITEM_DESCRIPTIONS = new String[] {"region", "shortName", "hitCount",
"missCount", "putCount", "hitRatio", "elementCountInMemory", "elementCountOnDisk", "elementCountTotal", };
private static final OpenType[] ITEM_TYPES = new OpenType[] {SimpleType.STRING,
SimpleType.STRING, SimpleType.LONG, SimpleType.LONG, SimpleType.LONG, SimpleType.DOUBLE, SimpleType.LONG,
SimpleType.LONG, SimpleType.LONG, };
private static final CompositeType COMPOSITE_TYPE;
private static final String TABULAR_TYPE_NAME = "Statistics by Cache-region";
private static final String TABULAR_TYPE_DESCRIPTION = "All Cache Region Statistics";
private static final String[] INDEX_NAMES = new String[] {"region", };
private static final TabularType TABULAR_TYPE;
static {
try {
COMPOSITE_TYPE = new CompositeType(COMPOSITE_TYPE_NAME, COMPOSITE_TYPE_DESCRIPTION, ITEM_NAMES,
ITEM_DESCRIPTIONS, ITEM_TYPES);
TABULAR_TYPE = new TabularType(TABULAR_TYPE_NAME, TABULAR_TYPE_DESCRIPTION, COMPOSITE_TYPE, INDEX_NAMES);
} catch (OpenDataException e) {
throw new RuntimeException(e);
}
}
/**
* region name
*/
protected final String region;
/**
* region short name
*/
protected final String shortName;
/**
* hit count
*/
protected long hitCount;
/**
* miss count
*/
protected long missCount;
/**
* put count
*/
protected long putCount;
/**
* hit ratio
*/
protected double hitRatio;
/**
* in-memory element count
*/
protected long elementCountInMemory;
/**
* on-disk element count
*/
protected long elementCountOnDisk;
/**
* total element count
*/
protected long elementCountTotal;
/**
* @param region
*/
public CacheRegionStats(String region) {
this.region = region;
this.shortName = CacheRegionUtils.determineShortName(region);
}
/**
* @param region
* @param src
*/
public CacheRegionStats(String region, SecondLevelCacheStatistics src) {
this(region);
try {
this.hitCount = BeanUtils.getLongBeanProperty(src, "hitCount");
this.missCount = BeanUtils.getLongBeanProperty(src, "missCount");
this.putCount = BeanUtils.getLongBeanProperty(src, "putCount");
this.hitRatio = determineHitRatio();
this.elementCountInMemory = BeanUtils.getLongBeanProperty(src, "elementCountInMemory");
this.elementCountOnDisk = BeanUtils.getLongBeanProperty(src, "elementCountOnDisk");
this.elementCountTotal = BeanUtils.getLongBeanProperty(src, "elementCountOnDisk");
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("Exception retrieving statistics", e);
}
}
/**
* @param cData
*/
public CacheRegionStats(final CompositeData cData) {
int i = 0;
region = (String) cData.get(ITEM_NAMES[i++]);
shortName = (String) cData.get(ITEM_NAMES[i++]);
hitCount = (Long) cData.get(ITEM_NAMES[i++]);
missCount = (Long) cData.get(ITEM_NAMES[i++]);
putCount = (Long) cData.get(ITEM_NAMES[i++]);
hitRatio = (Double) cData.get(ITEM_NAMES[i++]);
elementCountInMemory = (Long) cData.get(ITEM_NAMES[i++]);
elementCountOnDisk = (Long) cData.get(ITEM_NAMES[i++]);
elementCountTotal = (Long) cData.get(ITEM_NAMES[i++]);
}
private static int safeParseInt(String s) {
try {
return Integer.parseInt(s);
} catch (Exception e) {
return -1;
}
}
/**
* @return hit ratio
*/
protected double determineHitRatio() {
double result = 0;
long readCount = getHitCount() + getMissCount();
if (readCount > 0) {
result = getHitCount() / ((double) readCount);
}
return result;
}
/**
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "region=" + getRegion() + "shortName=" + getShortName() + ", hitCount=" + getHitCount() + ", missCount="
+ getMissCount() + ", putCount" + getPutCount() + ", hitRatio" + getHitRatio() + ", elementCountInMemory="
+ getElementCountInMemory() + ", elementCountOnDisk=" + getElementCountOnDisk() + ", elementCountTotal="
+ getElementCountTotal();
}
/**
* @return region name
*/
public String getRegion() {
return region;
}
/**
* @return short name
*/
public String getShortName() {
return shortName;
}
/**
* @return hit count
*/
public long getHitCount() {
return hitCount;
}
/**
* @return miss count
*/
public long getMissCount() {
return missCount;
}
/**
* @return put count
*/
public long getPutCount() {
return putCount;
}
/**
* @return hit ratio
*/
public double getHitRatio() {
return hitRatio;
}
/**
* @return in-memory element count
*/
public long getElementCountInMemory() {
return elementCountInMemory;
}
/**
* @return on-disk element count
*/
public long getElementCountOnDisk() {
return elementCountOnDisk;
}
/**
* @return total element count
*/
public long getElementCountTotal() {
return elementCountTotal;
}
/**
* @return composite data
*/
public CompositeData toCompositeData() {
try {
return new CompositeDataSupport(COMPOSITE_TYPE, ITEM_NAMES, new Object[] {getRegion(), getShortName(),
getHitCount(), getMissCount(), getPutCount(), getHitRatio(), getElementCountInMemory(),
getElementCountOnDisk(), getElementCountTotal(), });
} catch (OpenDataException e) {
throw new RuntimeException(e);
}
}
/**
* @return tabular data
*/
public static TabularData newTabularDataInstance() {
return new TabularDataSupport(TABULAR_TYPE);
}
/**
* @param tabularData
* @return array of region statistics
*/
public static CacheRegionStats[] fromTabularData(final TabularData tabularData) {
final List countList = new ArrayList(tabularData.size());
for (final Iterator pos = tabularData.values().iterator(); pos.hasNext();) {
countList.add(new CacheRegionStats((CompositeData) pos.next()));
}
return countList.toArray(new CacheRegionStats[countList.size()]);
}
}
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