org.elasticsearch.indices.warmer.InternalIndicesWarmer Maven / Gradle / Ivy
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* Licensed to ElasticSearch and Shay Banon under one
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* 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.indices.warmer;
import org.elasticsearch.cluster.ClusterService;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.index.service.IndexService;
import org.elasticsearch.index.shard.service.IndexShard;
import org.elasticsearch.indices.IndicesService;
import org.elasticsearch.threadpool.ThreadPool;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
*/
public class InternalIndicesWarmer extends AbstractComponent implements IndicesWarmer {
private final ThreadPool threadPool;
private final ClusterService clusterService;
private final IndicesService indicesService;
private final CopyOnWriteArrayList listeners = new CopyOnWriteArrayList();
@Inject
public InternalIndicesWarmer(Settings settings, ThreadPool threadPool, ClusterService clusterService, IndicesService indicesService) {
super(settings);
this.threadPool = threadPool;
this.clusterService = clusterService;
this.indicesService = indicesService;
}
@Override
public void addListener(Listener listener) {
listeners.add(listener);
}
@Override
public void removeListener(Listener listener) {
listeners.remove(listener);
}
public void warm(final WarmerContext context) {
final IndexMetaData indexMetaData = clusterService.state().metaData().index(context.shardId().index().name());
if (indexMetaData == null) {
return;
}
if (!indexMetaData.settings().getAsBoolean("index.warmer.enabled", settings.getAsBoolean("index.warmer.enabled", true))) {
return;
}
IndexService indexService = indicesService.indexService(context.shardId().index().name());
if (indexService == null) {
return;
}
final IndexShard indexShard = indexService.shard(context.shardId().id());
if (indexShard == null) {
return;
}
if (logger.isTraceEnabled()) {
logger.trace("[{}][{}] warming [{}], new [{}]", context.shardId().index().name(), context.shardId().id(), context.fullSearcher().reader(), context.newSearcher().reader());
}
indexShard.warmerService().onPreWarm();
long time = System.nanoTime();
for (final Listener listener : listeners) {
final CountDownLatch latch = new CountDownLatch(1);
threadPool.executor(listener.executor()).execute(new Runnable() {
@Override
public void run() {
try {
listener.warm(indexShard, indexMetaData, context);
} catch (Throwable e) {
indexShard.warmerService().logger().warn("failed to warm [{}]", e, listener);
} finally {
latch.countDown();
}
}
});
try {
latch.await();
} catch (InterruptedException e) {
return;
}
}
long took = System.nanoTime() - time;
indexShard.warmerService().onPostWarm(took);
if (indexShard.warmerService().logger().isTraceEnabled()) {
indexShard.warmerService().logger().trace("warming took [{}]", new TimeValue(took, TimeUnit.NANOSECONDS));
}
}
}