| /** |
| * Copyright 2010 The Apache Software Foundation |
| * |
| * 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.hbase.replication.regionserver; |
| import org.apache.hadoop.hbase.metrics.MetricsRate; |
| import org.apache.hadoop.metrics.MetricsContext; |
| import org.apache.hadoop.metrics.MetricsRecord; |
| import org.apache.hadoop.metrics.MetricsUtil; |
| import org.apache.hadoop.metrics.Updater; |
| import org.apache.hadoop.metrics.jvm.JvmMetrics; |
| import org.apache.hadoop.metrics.util.MetricsIntValue; |
| import org.apache.hadoop.metrics.util.MetricsLongValue; |
| import org.apache.hadoop.metrics.util.MetricsRegistry; |
| |
| /** |
| * This class is for maintaining the various replication statistics |
| * for a sink and publishing them through the metrics interfaces. |
| */ |
| public class ReplicationSinkMetrics implements Updater { |
| private final MetricsRecord metricsRecord; |
| private MetricsRegistry registry = new MetricsRegistry(); |
| private static ReplicationSinkMetrics instance; |
| |
| /** Rate of operations applied by the sink */ |
| public final MetricsRate appliedOpsRate = |
| new MetricsRate("appliedOpsRate", registry); |
| |
| /** Rate of batches (of operations) applied by the sink */ |
| public final MetricsRate appliedBatchesRate = |
| new MetricsRate("appliedBatchesRate", registry); |
| |
| /** Age of the last operation that was applied by the sink */ |
| private final MetricsLongValue ageOfLastAppliedOp = |
| new MetricsLongValue("ageOfLastAppliedOp", registry); |
| |
| /** |
| * Constructor used to register the metrics |
| */ |
| public ReplicationSinkMetrics() { |
| MetricsContext context = MetricsUtil.getContext("hbase"); |
| String name = Thread.currentThread().getName(); |
| metricsRecord = MetricsUtil.createRecord(context, "replication"); |
| metricsRecord.setTag("RegionServer", name); |
| context.registerUpdater(this); |
| // export for JMX |
| new ReplicationStatistics(this.registry, "ReplicationSink"); |
| } |
| |
| /** |
| * Set the age of the last edit that was applied |
| * @param timestamp write time of the edit |
| */ |
| public void setAgeOfLastAppliedOp(long timestamp) { |
| ageOfLastAppliedOp.set(System.currentTimeMillis() - timestamp); |
| } |
| @Override |
| public void doUpdates(MetricsContext metricsContext) { |
| synchronized (this) { |
| this.appliedOpsRate.pushMetric(this.metricsRecord); |
| this.appliedBatchesRate.pushMetric(this.metricsRecord); |
| this.ageOfLastAppliedOp.pushMetric(this.metricsRecord); |
| } |
| this.metricsRecord.update(); |
| } |
| } |