/**
* 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.master;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hbase.metrics.BaseSourceImpl;
import org.apache.hadoop.metrics2.MetricsCollector;
import org.apache.hadoop.metrics2.MetricsRecordBuilder;
import org.apache.hadoop.metrics2.lib.Interns;
import org.apache.hadoop.metrics2.lib.MutableCounterLong;
/**
* Hadoop2 implementation of MetricsMasterSource.
*
* Implements BaseSource through BaseSourceImpl, following the pattern
*/
@InterfaceAudience.Private
public class MetricsMasterSourceImpl
extends BaseSourceImpl implements MetricsMasterSource {
private final MetricsMasterWrapper masterWrapper;
private MutableCounterLong clusterRequestsCounter;
public MetricsMasterSourceImpl(MetricsMasterWrapper masterWrapper) {
this(METRICS_NAME,
METRICS_DESCRIPTION,
METRICS_CONTEXT,
METRICS_JMX_CONTEXT,
masterWrapper);
}
public MetricsMasterSourceImpl(String metricsName,
String metricsDescription,
String metricsContext,
String metricsJmxContext,
MetricsMasterWrapper masterWrapper) {
super(metricsName, metricsDescription, metricsContext, metricsJmxContext);
this.masterWrapper = masterWrapper;
}
@Override
public void init() {
super.init();
clusterRequestsCounter = metricsRegistry.newCounter(CLUSTER_REQUESTS_NAME, "", 0l);
}
public void incRequests(final int inc) {
this.clusterRequestsCounter.incr(inc);
}
@Override
public void getMetrics(MetricsCollector metricsCollector, boolean all) {
MetricsRecordBuilder metricsRecordBuilder = metricsCollector.addRecord(metricsName)
.setContext(metricsContext);
// masterWrapper can be null because this function is called inside of init.
if (masterWrapper != null) {
metricsRecordBuilder
.addGauge(Interns.info(MASTER_ACTIVE_TIME_NAME,
MASTER_ACTIVE_TIME_DESC), masterWrapper.getActiveTime())
.addGauge(Interns.info(MASTER_START_TIME_NAME,
MASTER_START_TIME_DESC), masterWrapper.getStartTime())
.addGauge(Interns.info(AVERAGE_LOAD_NAME, AVERAGE_LOAD_DESC),
masterWrapper.getAverageLoad())
.addGauge(Interns.info(NUM_REGION_SERVERS_NAME,
NUMBER_OF_REGION_SERVERS_DESC), masterWrapper.getRegionServers())
.addGauge(Interns.info(NUM_DEAD_REGION_SERVERS_NAME,
NUMBER_OF_DEAD_REGION_SERVERS_DESC),
masterWrapper.getDeadRegionServers())
.tag(Interns.info(ZOOKEEPER_QUORUM_NAME, ZOOKEEPER_QUORUM_DESC),
masterWrapper.getZookeeperQuorum())
.tag(Interns.info(SERVER_NAME_NAME, SERVER_NAME_DESC), masterWrapper.getServerName())
.tag(Interns.info(CLUSTER_ID_NAME, CLUSTER_ID_DESC), masterWrapper.getClusterId())
.tag(Interns.info(IS_ACTIVE_MASTER_NAME,
IS_ACTIVE_MASTER_DESC),
String.valueOf(masterWrapper.getIsActiveMaster()));
}
metricsRegistry.snapshot(metricsRecordBuilder, all);
}
}