| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.druid.query; |
| |
| import com.google.common.base.Supplier; |
| import org.apache.druid.java.util.common.ISE; |
| import org.apache.druid.java.util.common.guava.Sequence; |
| import org.apache.druid.java.util.common.guava.SequenceWrapper; |
| import org.apache.druid.java.util.common.guava.Sequences; |
| import org.apache.druid.java.util.emitter.service.ServiceEmitter; |
| import org.apache.druid.query.context.ResponseContext; |
| import org.apache.druid.utils.JvmUtils; |
| |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| public class CPUTimeMetricQueryRunner<T> implements QueryRunner<T> |
| { |
| private final QueryRunner<T> delegate; |
| private final QueryToolChest<T, ? extends Query<T>> queryToolChest; |
| private final ServiceEmitter emitter; |
| private final AtomicLong cpuTimeAccumulator; |
| private final boolean report; |
| |
| private CPUTimeMetricQueryRunner( |
| QueryRunner<T> delegate, |
| QueryToolChest<T, ? extends Query<T>> queryToolChest, |
| ServiceEmitter emitter, |
| AtomicLong cpuTimeAccumulator, |
| boolean report |
| ) |
| { |
| if (!JvmUtils.isThreadCpuTimeEnabled()) { |
| throw new ISE("Cpu time must enabled"); |
| } |
| this.delegate = delegate; |
| this.queryToolChest = queryToolChest; |
| this.emitter = emitter; |
| this.cpuTimeAccumulator = cpuTimeAccumulator == null ? new AtomicLong(0L) : cpuTimeAccumulator; |
| this.report = report; |
| } |
| |
| |
| @Override |
| public Sequence<T> run(final QueryPlus<T> queryPlus, final ResponseContext responseContext) |
| { |
| final long startRun = JvmUtils.getCurrentThreadCpuTime(); |
| final QueryPlus<T> queryWithMetrics = queryPlus.withQueryMetrics(queryToolChest); |
| final Sequence<T> baseSequence = delegate.run(queryWithMetrics, responseContext); |
| |
| cpuTimeAccumulator.addAndGet(JvmUtils.getCurrentThreadCpuTime() - startRun); |
| |
| return Sequences.wrap( |
| baseSequence, |
| new SequenceWrapper() |
| { |
| @Override |
| public <RetType> RetType wrap(Supplier<RetType> sequenceProcessing) |
| { |
| final long start = JvmUtils.getCurrentThreadCpuTime(); |
| try { |
| return sequenceProcessing.get(); |
| } |
| finally { |
| cpuTimeAccumulator.addAndGet(JvmUtils.getCurrentThreadCpuTime() - start); |
| } |
| } |
| |
| @Override |
| public void after(boolean isDone, Throwable thrown) |
| { |
| if (report) { |
| final long cpuTimeNs = cpuTimeAccumulator.get(); |
| if (cpuTimeNs > 0) { |
| responseContext.add(ResponseContext.Key.CPU_CONSUMED_NANOS, cpuTimeNs); |
| queryWithMetrics.getQueryMetrics().reportCpuTime(cpuTimeNs).emit(emitter); |
| } |
| } |
| } |
| } |
| ); |
| } |
| |
| public static <T> QueryRunner<T> safeBuild( |
| QueryRunner<T> delegate, |
| QueryToolChest<T, ? extends Query<T>> queryToolChest, |
| ServiceEmitter emitter, |
| AtomicLong accumulator, |
| boolean report |
| ) |
| { |
| if (!JvmUtils.isThreadCpuTimeEnabled()) { |
| return delegate; |
| } else { |
| return new CPUTimeMetricQueryRunner<>(delegate, queryToolChest, emitter, accumulator, report); |
| } |
| } |
| } |