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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.indexing;
import com.google.common.collect.ImmutableMap;
import org.elasticsearch.common.collect.MapBuilder;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.metrics.CounterMetric;
import org.elasticsearch.common.metrics.MeanMetric;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.index.engine.Engine;
import org.elasticsearch.index.indexing.slowlog.ShardSlowLogIndexingService;
import org.elasticsearch.index.settings.IndexSettings;
import org.elasticsearch.index.shard.AbstractIndexShardComponent;
import org.elasticsearch.index.shard.ShardId;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.TimeUnit;
/**
*/
public class ShardIndexingService extends AbstractIndexShardComponent {
private final ShardSlowLogIndexingService slowLog;
private final StatsHolder totalStats = new StatsHolder();
private final CopyOnWriteArrayList listeners = new CopyOnWriteArrayList<>();
private volatile Map typesStats = ImmutableMap.of();
@Inject
public ShardIndexingService(ShardId shardId, @IndexSettings Settings indexSettings, ShardSlowLogIndexingService slowLog) {
super(shardId, indexSettings);
this.slowLog = slowLog;
}
/**
* Returns the stats, including type specific stats. If the types are null/0 length, then nothing
* is returned for them. If they are set, then only types provided will be returned, or
* _all for all types.
*/
public IndexingStats stats(String... types) {
IndexingStats.Stats total = totalStats.stats();
Map typesSt = null;
if (types != null && types.length > 0) {
typesSt = new HashMap<>(typesStats.size());
if (types.length == 1 && types[0].equals("_all")) {
for (Map.Entry entry : typesStats.entrySet()) {
typesSt.put(entry.getKey(), entry.getValue().stats());
}
} else {
for (Map.Entry entry : typesStats.entrySet()) {
if (Regex.simpleMatch(types, entry.getKey())) {
typesSt.put(entry.getKey(), entry.getValue().stats());
}
}
}
}
return new IndexingStats(total, typesSt);
}
public void addListener(IndexingOperationListener listener) {
listeners.add(listener);
}
public void removeListener(IndexingOperationListener listener) {
listeners.remove(listener);
}
public Engine.Create preCreate(Engine.Create create) {
totalStats.indexCurrent.inc();
typeStats(create.type()).indexCurrent.inc();
for (IndexingOperationListener listener : listeners) {
create = listener.preCreate(create);
}
return create;
}
public void postCreateUnderLock(Engine.Create create) {
for (IndexingOperationListener listener : listeners) {
try {
listener.postCreateUnderLock(create);
} catch (Exception e) {
logger.warn("post listener [{}] failed", e, listener);
}
}
}
public void throttlingActivated() {
totalStats.setThrottled(true);
}
public void throttlingDeactivated() {
totalStats.setThrottled(false);
}
public void postCreate(Engine.Create create) {
long took = create.endTime() - create.startTime();
totalStats.indexMetric.inc(took);
totalStats.indexCurrent.dec();
StatsHolder typeStats = typeStats(create.type());
typeStats.indexMetric.inc(took);
typeStats.indexCurrent.dec();
slowLog.postCreate(create, took);
for (IndexingOperationListener listener : listeners) {
try {
listener.postCreate(create);
} catch (Exception e) {
logger.warn("post listener [{}] failed", e, listener);
}
}
}
public Engine.Index preIndex(Engine.Index index) {
totalStats.indexCurrent.inc();
typeStats(index.type()).indexCurrent.inc();
for (IndexingOperationListener listener : listeners) {
index = listener.preIndex(index);
}
return index;
}
public void postIndexUnderLock(Engine.Index index) {
for (IndexingOperationListener listener : listeners) {
try {
listener.postIndexUnderLock(index);
} catch (Exception e) {
logger.warn("post listener [{}] failed", e, listener);
}
}
}
public void postIndex(Engine.Index index) {
long took = index.endTime() - index.startTime();
totalStats.indexMetric.inc(took);
totalStats.indexCurrent.dec();
StatsHolder typeStats = typeStats(index.type());
typeStats.indexMetric.inc(took);
typeStats.indexCurrent.dec();
slowLog.postIndex(index, took);
for (IndexingOperationListener listener : listeners) {
try {
listener.postIndex(index);
} catch (Exception e) {
logger.warn("post listener [{}] failed", e, listener);
}
}
}
public void failedIndex(Engine.Index index) {
totalStats.indexCurrent.dec();
typeStats(index.type()).indexCurrent.dec();
}
public Engine.Delete preDelete(Engine.Delete delete) {
totalStats.deleteCurrent.inc();
typeStats(delete.type()).deleteCurrent.inc();
for (IndexingOperationListener listener : listeners) {
delete = listener.preDelete(delete);
}
return delete;
}
public void postDeleteUnderLock(Engine.Delete delete) {
for (IndexingOperationListener listener : listeners) {
try {
listener.postDeleteUnderLock(delete);
} catch (Exception e) {
logger.warn("post listener [{}] failed", e, listener);
}
}
}
public void postDelete(Engine.Delete delete) {
long took = delete.endTime() - delete.startTime();
totalStats.deleteMetric.inc(took);
totalStats.deleteCurrent.dec();
StatsHolder typeStats = typeStats(delete.type());
typeStats.deleteMetric.inc(took);
typeStats.deleteCurrent.dec();
for (IndexingOperationListener listener : listeners) {
try {
listener.postDelete(delete);
} catch (Exception e) {
logger.warn("post listener [{}] failed", e, listener);
}
}
}
public void failedDelete(Engine.Delete delete) {
totalStats.deleteCurrent.dec();
typeStats(delete.type()).deleteCurrent.dec();
}
public Engine.DeleteByQuery preDeleteByQuery(Engine.DeleteByQuery deleteByQuery) {
for (IndexingOperationListener listener : listeners) {
deleteByQuery = listener.preDeleteByQuery(deleteByQuery);
}
return deleteByQuery;
}
public void postDeleteByQuery(Engine.DeleteByQuery deleteByQuery) {
for (IndexingOperationListener listener : listeners) {
listener.postDeleteByQuery(deleteByQuery);
}
}
public void noopUpdate(String type) {
totalStats.noopUpdates.inc();
typeStats(type).noopUpdates.inc();
}
public void clear() {
totalStats.clear();
synchronized (this) {
if (!typesStats.isEmpty()) {
MapBuilder typesStatsBuilder = MapBuilder.newMapBuilder();
for (Map.Entry typeStats : typesStats.entrySet()) {
if (typeStats.getValue().totalCurrent() > 0) {
typeStats.getValue().clear();
typesStatsBuilder.put(typeStats.getKey(), typeStats.getValue());
}
}
typesStats = typesStatsBuilder.immutableMap();
}
}
}
private StatsHolder typeStats(String type) {
StatsHolder stats = typesStats.get(type);
if (stats == null) {
synchronized (this) {
stats = typesStats.get(type);
if (stats == null) {
stats = new StatsHolder();
typesStats = MapBuilder.newMapBuilder(typesStats).put(type, stats).immutableMap();
}
}
}
return stats;
}
static class StatsHolder {
public final MeanMetric indexMetric = new MeanMetric();
public final MeanMetric deleteMetric = new MeanMetric();
public final CounterMetric indexCurrent = new CounterMetric();
public final CounterMetric deleteCurrent = new CounterMetric();
public final CounterMetric noopUpdates = new CounterMetric();
public final CounterMetric throttleTimeMillisMetric = new CounterMetric();
volatile boolean isThrottled = false;
volatile long startOfThrottleNS;
public IndexingStats.Stats stats() {
long currentThrottleNS = 0;
if (isThrottled && startOfThrottleNS != 0) {
currentThrottleNS += System.nanoTime() - startOfThrottleNS;
if (currentThrottleNS < 0) {
// Paranoia (System.nanoTime() is supposed to be monotonic): time slip must have happened, have to ignore this value
currentThrottleNS = 0;
}
}
return new IndexingStats.Stats(
indexMetric.count(), TimeUnit.NANOSECONDS.toMillis(indexMetric.sum()), indexCurrent.count(),
deleteMetric.count(), TimeUnit.NANOSECONDS.toMillis(deleteMetric.sum()), deleteCurrent.count(),
noopUpdates.count(), isThrottled, TimeUnit.MILLISECONDS.toMillis(throttleTimeMillisMetric.count() + TimeValue.nsecToMSec(currentThrottleNS)));
}
void setThrottled(boolean isThrottled) {
if (!this.isThrottled && isThrottled) {
startOfThrottleNS = System.nanoTime();
} else if (this.isThrottled && !isThrottled) {
assert startOfThrottleNS > 0 : "Bad state of startOfThrottleNS";
long throttleTimeNS = System.nanoTime() - startOfThrottleNS;
if (throttleTimeNS >= 0) {
// Paranoia (System.nanoTime() is supposed to be monotonic): time slip may have occurred but never want to add a negative number
throttleTimeMillisMetric.inc(TimeValue.nsecToMSec(throttleTimeNS));
}
}
this.isThrottled = isThrottled;
}
public long totalCurrent() {
return indexCurrent.count() + deleteMetric.count();
}
public void clear() {
indexMetric.clear();
deleteMetric.clear();
}
}
}