| /** |
| * 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.hadoop.hdds.scm.container.placement.algorithms; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import org.apache.hadoop.metrics2.MetricsCollector; |
| import org.apache.hadoop.metrics2.MetricsInfo; |
| import org.apache.hadoop.metrics2.MetricsSource; |
| import org.apache.hadoop.metrics2.MetricsSystem; |
| import org.apache.hadoop.metrics2.annotation.Metric; |
| import org.apache.hadoop.metrics2.annotation.Metrics; |
| import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem; |
| import org.apache.hadoop.metrics2.lib.Interns; |
| import org.apache.hadoop.metrics2.lib.MetricsRegistry; |
| import org.apache.hadoop.metrics2.lib.MutableCounterLong; |
| |
| /** |
| * This class is for maintaining Topology aware container placement statistics. |
| */ |
| @Metrics(about="SCM Container Placement Metrics", context = "ozone") |
| public class SCMContainerPlacementMetrics implements MetricsSource { |
| public static final String SOURCE_NAME = |
| SCMContainerPlacementMetrics.class.getSimpleName(); |
| private static final MetricsInfo RECORD_INFO = Interns.info(SOURCE_NAME, |
| "SCM Container Placement Metrics"); |
| private static MetricsRegistry registry; |
| |
| // total datanode allocation request count |
| @Metric private MutableCounterLong datanodeRequestCount; |
| // datanode allocation attempt count, including success, fallback and failed |
| @Metric private MutableCounterLong datanodeChooseAttemptCount; |
| // datanode successful allocation count |
| @Metric private MutableCounterLong datanodeChooseSuccessCount; |
| // datanode allocated with some allocation constrains compromised |
| @Metric private MutableCounterLong datanodeChooseFallbackCount; |
| |
| public SCMContainerPlacementMetrics() { |
| } |
| |
| public static SCMContainerPlacementMetrics create() { |
| MetricsSystem ms = DefaultMetricsSystem.instance(); |
| registry = new MetricsRegistry(RECORD_INFO); |
| return ms.register(SOURCE_NAME, "SCM Container Placement Metrics", |
| new SCMContainerPlacementMetrics()); |
| } |
| |
| public void incrDatanodeRequestCount(long count) { |
| this.datanodeRequestCount.incr(count); |
| } |
| |
| public void incrDatanodeChooseSuccessCount() { |
| this.datanodeChooseSuccessCount.incr(1); |
| } |
| |
| public void incrDatanodeChooseFallbackCount() { |
| this.datanodeChooseFallbackCount.incr(1); |
| } |
| |
| public void incrDatanodeChooseAttemptCount() { |
| this.datanodeChooseAttemptCount.incr(1); |
| } |
| |
| public void unRegister() { |
| MetricsSystem ms = DefaultMetricsSystem.instance(); |
| ms.unregisterSource(SOURCE_NAME); |
| } |
| |
| @VisibleForTesting |
| public long getDatanodeRequestCount() { |
| return this.datanodeRequestCount.value(); |
| } |
| |
| @VisibleForTesting |
| public long getDatanodeChooseSuccessCount() { |
| return this.datanodeChooseSuccessCount.value(); |
| } |
| |
| @VisibleForTesting |
| public long getDatanodeChooseFallbackCount() { |
| return this.datanodeChooseFallbackCount.value(); |
| } |
| |
| @VisibleForTesting |
| public long getDatanodeChooseAttemptCount() { |
| return this.datanodeChooseAttemptCount.value(); |
| } |
| |
| @Override |
| public void getMetrics(MetricsCollector collector, boolean all) { |
| registry.snapshot(collector.addRecord(registry.info().name()), true); |
| } |
| } |