1 /** 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 package org.apache.hadoop.hbase.master; 20 21 import org.apache.hadoop.hbase.metrics.BaseSource; 22 23 /** 24 * Interface that classes that expose metrics about the master will implement. 25 */ 26 public interface MetricsMasterSource extends BaseSource { 27 28 /** 29 * The name of the metrics 30 */ 31 String METRICS_NAME = "Server"; 32 33 /** 34 * The context metrics will be under. 35 */ 36 String METRICS_CONTEXT = "master"; 37 38 /** 39 * The name of the metrics context that metrics will be under in jmx 40 */ 41 String METRICS_JMX_CONTEXT = "Master,sub=" + METRICS_NAME; 42 43 /** 44 * Description 45 */ 46 String METRICS_DESCRIPTION = "Metrics about HBase master server"; 47 48 // Strings used for exporting to metrics system. 49 String MASTER_ACTIVE_TIME_NAME = "masterActiveTime"; 50 String MASTER_START_TIME_NAME = "masterStartTime"; 51 String AVERAGE_LOAD_NAME = "averageLoad"; 52 String LIVE_REGION_SERVERS_NAME = "liveRegionServers"; 53 String DEAD_REGION_SERVERS_NAME = "deadRegionServers"; 54 String NUM_REGION_SERVERS_NAME = "numRegionServers"; 55 String NUM_DEAD_REGION_SERVERS_NAME = "numDeadRegionServers"; 56 String ZOOKEEPER_QUORUM_NAME = "zookeeperQuorum"; 57 String SERVER_NAME_NAME = "serverName"; 58 String CLUSTER_ID_NAME = "clusterId"; 59 String IS_ACTIVE_MASTER_NAME = "isActiveMaster"; 60 61 62 String CLUSTER_REQUESTS_NAME = "clusterRequests"; 63 String MASTER_ACTIVE_TIME_DESC = "Master Active Time"; 64 String MASTER_START_TIME_DESC = "Master Start Time"; 65 String AVERAGE_LOAD_DESC = "AverageLoad"; 66 String LIVE_REGION_SERVERS_DESC = "Names of live RegionServers"; 67 String NUMBER_OF_REGION_SERVERS_DESC = "Number of RegionServers"; 68 String DEAD_REGION_SERVERS_DESC = "Names of dead RegionServers"; 69 String NUMBER_OF_DEAD_REGION_SERVERS_DESC = "Number of dead RegionServers"; 70 String ZOOKEEPER_QUORUM_DESC = "Zookeeper Quorum"; 71 String SERVER_NAME_DESC = "Server Name"; 72 String CLUSTER_ID_DESC = "Cluster Id"; 73 String IS_ACTIVE_MASTER_DESC = "Is Active Master"; 74 75 76 77 /** 78 * Increment the number of requests the cluster has seen. 79 * 80 * @param inc Ammount to increment the total by. 81 */ incRequests(final long inc)82 void incRequests(final long inc); 83 84 85 86 87 } 88