io.druid.query.MetricsEmittingExecutorService Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.query;
import com.google.common.util.concurrent.ForwardingListeningExecutorService;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.metamx.emitter.service.ServiceEmitter;
import com.metamx.emitter.service.ServiceMetricEvent;
import java.util.concurrent.Callable;
public class MetricsEmittingExecutorService extends ForwardingListeningExecutorService
implements ExecutorServiceMonitor.MetricEmitter
{
private final ListeningExecutorService delegate;
public MetricsEmittingExecutorService(
ListeningExecutorService delegate,
ExecutorServiceMonitor executorServiceMonitor
)
{
super();
this.delegate = delegate;
executorServiceMonitor.add(this);
}
@Override
protected ListeningExecutorService delegate()
{
return delegate;
}
@SuppressWarnings("ParameterPackage")
@Override
public ListenableFuture submit(Callable tCallable)
{
return delegate.submit(tCallable);
}
@Override
public void execute(Runnable runnable)
{
delegate.execute(runnable);
}
@Override
public void emitMetrics(ServiceEmitter emitter, ServiceMetricEvent.Builder metricBuilder)
{
if (delegate instanceof PrioritizedExecutorService) {
emitter.emit(metricBuilder.build("segment/scan/pending", ((PrioritizedExecutorService) delegate).getQueueSize()));
}
}
}