org.elasticsearch.index.fielddata.ShardFieldData Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch 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.elasticsearch.index.fielddata;
import gnu.trove.map.hash.TObjectLongHashMap;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.metrics.CounterMetric;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.ConcurrentCollections;
import org.elasticsearch.index.mapper.FieldMapper;
import org.elasticsearch.index.settings.IndexSettings;
import org.elasticsearch.index.shard.AbstractIndexShardComponent;
import org.elasticsearch.index.shard.ShardId;
import java.util.Map;
import java.util.concurrent.ConcurrentMap;
/**
*/
public class ShardFieldData extends AbstractIndexShardComponent implements IndexFieldDataCache.Listener {
final CounterMetric evictionsMetric = new CounterMetric();
final CounterMetric totalMetric = new CounterMetric();
final ConcurrentMap perFieldTotals = ConcurrentCollections.newConcurrentMap();
@Inject
public ShardFieldData(ShardId shardId, @IndexSettings Settings indexSettings) {
super(shardId, indexSettings);
}
public FieldDataStats stats(String... fields) {
TObjectLongHashMap fieldTotals = null;
if (fields != null && fields.length > 0) {
fieldTotals = new TObjectLongHashMap();
for (Map.Entry entry : perFieldTotals.entrySet()) {
for (String field : fields) {
if (Regex.simpleMatch(field, entry.getKey())) {
fieldTotals.put(entry.getKey(), entry.getValue().count());
}
}
}
}
return new FieldDataStats(totalMetric.count(), evictionsMetric.count(), fieldTotals);
}
@Override
public void onLoad(FieldMapper.Names fieldNames, FieldDataType fieldDataType, AtomicFieldData fieldData) {
long sizeInBytes = fieldData.getMemorySizeInBytes();
totalMetric.inc(sizeInBytes);
String keyFieldName = fieldNames.indexName();
CounterMetric total = perFieldTotals.get(keyFieldName);
if (total != null) {
total.inc(sizeInBytes);
} else {
total = new CounterMetric();
total.inc(sizeInBytes);
CounterMetric prev = perFieldTotals.putIfAbsent(keyFieldName, total);
if (prev != null) {
prev.inc(sizeInBytes);
}
}
}
@Override
public void onUnload(FieldMapper.Names fieldNames, FieldDataType fieldDataType, boolean wasEvicted, long sizeInBytes, @Nullable AtomicFieldData fieldData) {
if (wasEvicted) {
evictionsMetric.inc();
}
if (sizeInBytes != -1) {
totalMetric.dec(sizeInBytes);
String keyFieldName = fieldNames.indexName();
CounterMetric total = perFieldTotals.get(keyFieldName);
if (total != null) {
total.dec(sizeInBytes);
}
}
}
}