| /** |
| * 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.hdfs.server.federation.router; |
| |
| import static org.apache.hadoop.metrics2.impl.MsInfo.ProcessName; |
| import static org.apache.hadoop.metrics2.impl.MsInfo.SessionId; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hdfs.DFSConfigKeys; |
| 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.MetricsRegistry; |
| import org.apache.hadoop.metrics2.lib.MutableGaugeInt; |
| import org.apache.hadoop.metrics2.source.JvmMetrics; |
| |
| /** |
| * This class is for maintaining the various Router activity statistics |
| * and publishing them through the metrics interfaces. |
| */ |
| @Metrics(name="RouterActivity", about="Router metrics", context="dfs") |
| public class RouterMetrics { |
| |
| private final MetricsRegistry registry = new MetricsRegistry("router"); |
| |
| @Metric("Duration in SafeMode at startup in msec") |
| private MutableGaugeInt safeModeTime; |
| |
| private JvmMetrics jvmMetrics = null; |
| |
| RouterMetrics( |
| String processName, String sessionId, final JvmMetrics jvmMetrics) { |
| this.jvmMetrics = jvmMetrics; |
| registry.tag(ProcessName, processName).tag(SessionId, sessionId); |
| } |
| |
| public static RouterMetrics create(Configuration conf) { |
| String sessionId = conf.get(DFSConfigKeys.DFS_METRICS_SESSION_ID_KEY); |
| String processName = "Router"; |
| MetricsSystem ms = DefaultMetricsSystem.instance(); |
| JvmMetrics jm = JvmMetrics.create(processName, sessionId, ms); |
| |
| return ms.register(new RouterMetrics(processName, sessionId, jm)); |
| } |
| |
| public JvmMetrics getJvmMetrics() { |
| return jvmMetrics; |
| } |
| |
| public void shutdown() { |
| DefaultMetricsSystem.shutdown(); |
| } |
| |
| public void setSafeModeTime(long elapsed) { |
| safeModeTime.set((int) elapsed); |
| } |
| } |