/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.solr.search;
import java.net.URL;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.common.util.SimpleOrderedMap;
import org.apache.solr.core.SolrCore;
import org.apache.solr.core.SolrInfoMBean;
import org.apache.lucene.search.FieldCache;
import org.apache.lucene.search.FieldCache.CacheEntry;
import org.apache.lucene.util.FieldCacheSanityChecker;
import org.apache.lucene.util.FieldCacheSanityChecker.Insanity;
/**
* A SolrInfoMBean that provides introspection of the Lucene FiledCache, this is <b>NOT</b> a cache that is manged by Solr.
*
* @version $Id: SolrFieldCacheMBean.java 984589 2010-08-11 21:33:28Z yonik $
*/
public class SolrFieldCacheMBean implements SolrInfoMBean {
protected FieldCacheSanityChecker checker = new FieldCacheSanityChecker();
public String getName() { return this.getClass().getName(); }
public String getVersion() { return SolrCore.version; }
public String getDescription() {
return "Provides introspection of the Lucene FieldCache, "
+ "this is **NOT** a cache that is managed by Solr.";
}
public Category getCategory() { return Category.CACHE; }
public String getSourceId() {
return "$Id: SolrFieldCacheMBean.java 984589 2010-08-11 21:33:28Z yonik $";
}
public String getSource() {
return "$URL: https://svn.apache.org/repos/asf/lucene/dev/trunk/solr/src/java/org/apache/solr/search/SolrFieldCacheMBean.java $";
}
public URL[] getDocs() {
return null;
}
public NamedList getStatistics() {
NamedList stats = new SimpleOrderedMap();
CacheEntry[] entries = FieldCache.DEFAULT.getCacheEntries();
stats.add("entries_count", entries.length);
for (int i = 0; i < entries.length; i++) {
CacheEntry e = entries[i];
stats.add("entry#" + i, e.toString());
}
Insanity[] insanity = checker.check(entries);
stats.add("insanity_count", insanity.length);
for (int i = 0; i < insanity.length; i++) {
/** RAM estimation is both CPU and memory intensive... we don't want to do it unless asked.
// we only estimate the size of insane entries
for (CacheEntry e : insanity[i].getCacheEntries()) {
// don't re-estimate if we've already done it.
if (null == e.getEstimatedSize()) e.estimateSize();
}
**/
stats.add("insanity#" + i, insanity[i].toString());
}
return stats;
}
}