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/*
* Licensed to Elasticsearch 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 com.carrotsearch.hppc.ObjectLongHashMap;
import org.apache.lucene.util.Accountable;
import org.elasticsearch.common.metrics.CounterMetric;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.util.concurrent.ConcurrentCollections;
import org.elasticsearch.index.mapper.MappedFieldType;
import org.elasticsearch.index.shard.ShardId;
import java.util.Map;
import java.util.concurrent.ConcurrentMap;
public class ShardFieldData implements IndexFieldDataCache.Listener {
final CounterMetric evictionsMetric = new CounterMetric();
final CounterMetric totalMetric = new CounterMetric();
final ConcurrentMap perFieldTotals = ConcurrentCollections.newConcurrentMap();
public FieldDataStats stats(String... fields) {
ObjectLongHashMap fieldTotals = null;
if (fields != null && fields.length > 0) {
fieldTotals = new ObjectLongHashMap<>();
for (Map.Entry entry : perFieldTotals.entrySet()) {
if (Regex.simpleMatch(fields, entry.getKey())) {
fieldTotals.put(entry.getKey(), entry.getValue().count());
}
}
}
return new FieldDataStats(totalMetric.count(), evictionsMetric.count(), fieldTotals);
}
@Override
public void onCache(ShardId shardId, MappedFieldType.Names fieldNames, FieldDataType fieldDataType, Accountable ramUsage) {
totalMetric.inc(ramUsage.ramBytesUsed());
String keyFieldName = fieldNames.indexName();
CounterMetric total = perFieldTotals.get(keyFieldName);
if (total != null) {
total.inc(ramUsage.ramBytesUsed());
} else {
total = new CounterMetric();
total.inc(ramUsage.ramBytesUsed());
CounterMetric prev = perFieldTotals.putIfAbsent(keyFieldName, total);
if (prev != null) {
prev.inc(ramUsage.ramBytesUsed());
}
}
}
@Override
public void onRemoval(ShardId shardId, MappedFieldType.Names fieldNames, FieldDataType fieldDataType, boolean wasEvicted, long sizeInBytes) {
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);
}
}
}
}