/*
* Copyright 2010 Outerthought bvba
*
* Licensed 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.lilyproject.repository.impl;
import javax.management.ObjectName;
import java.util.EnumMap;
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.util.MetricsBase;
import org.apache.hadoop.metrics.util.MetricsLongValue;
import org.apache.hadoop.metrics.util.MetricsRegistry;
import org.apache.hadoop.metrics.util.MetricsTimeVaryingRate;
import org.lilyproject.util.hbase.metrics.MBeanUtil;
import org.lilyproject.util.hbase.metrics.MetricsDynamicMBeanBase;
public class RepositoryMetrics implements Updater {
public enum Action{CREATE, READ, UPDATE, DELETE}
public enum HBaseAction{PUT, GET, LOCK, UNLOCK}
private final MetricsRegistry registry = new MetricsRegistry();
private final MetricsRecord metricsRecord;
private final MetricsContext context;
private final EnumMap<Action, MetricsTimeVaryingRate> rates = new EnumMap<Action, MetricsTimeVaryingRate>(Action.class);
private final EnumMap<HBaseAction, MetricsTimeVaryingRate> hbaseRates =
new EnumMap<HBaseAction, MetricsTimeVaryingRate>(HBaseAction.class);
private final MetricsLongValue lastMutationEventTimestamp;
private final RepositoryMetricsMXBean mbean;
private final String recordName;
public RepositoryMetrics(String recordName) {
this.recordName = recordName;
for (Action action : Action.values()) {
rates.put(action, new MetricsTimeVaryingRate(action.name().toLowerCase(), registry));
}
for (HBaseAction action : HBaseAction.values()) {
hbaseRates.put(action, new MetricsTimeVaryingRate(action.name().toLowerCase(), registry));
}
lastMutationEventTimestamp = new MetricsLongValue("timestampLastMutation", registry);
context = MetricsUtil.getContext("repository");
metricsRecord = MetricsUtil.createRecord(context, recordName);
context.registerUpdater(this);
mbean = new RepositoryMetricsMXBean(this.registry);
}
public void shutdown() {
context.unregisterUpdater(this);
mbean.shutdown();
}
@Override
public void doUpdates(MetricsContext unused) {
synchronized (this) {
for (MetricsBase m : registry.getMetricsList()) {
m.pushMetric(metricsRecord);
}
}
metricsRecord.update();
}
void report(Action action, long duration) {
rates.get(action).inc(duration);
if (action != Action.READ) {
lastMutationEventTimestamp.set(System.currentTimeMillis());
}
}
void reportHBase(HBaseAction action, long duration) {
hbaseRates.get(action).inc(duration);
}
public class RepositoryMetricsMXBean extends MetricsDynamicMBeanBase {
private final ObjectName mbeanName;
public RepositoryMetricsMXBean(MetricsRegistry registry) {
super(registry, "Lily Repository");
mbeanName = MBeanUtil.registerMBean("Repository", recordName, this);
}
public void shutdown() {
if (mbeanName != null) {
MBeanUtil.unregisterMBean(mbeanName);
}
}
}
}