/*
* Copyright 2002-2017 the original author or authors.
*
* 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.springframework.data.mongodb.monitor;
import org.bson.Document;
import org.springframework.jmx.export.annotation.ManagedMetric;
import org.springframework.jmx.export.annotation.ManagedResource;
import org.springframework.jmx.support.MetricType;
import com.mongodb.DBObject;
import com.mongodb.MongoClient;
/**
* JMX Metrics for Global Locks
*
* @author Mark Pollack
*/
@ManagedResource(description = "Global Lock Metrics")
public class GlobalLockMetrics extends AbstractMonitor {
public GlobalLockMetrics(MongoClient mongoClient) {
super(mongoClient);
}
@ManagedMetric(metricType = MetricType.COUNTER, displayName = "Total time")
public double getTotalTime() {
return getGlobalLockData("totalTime", java.lang.Double.class);
}
@ManagedMetric(metricType = MetricType.COUNTER, displayName = "Lock time", unit = "s")
public double getLockTime() {
return getGlobalLockData("lockTime", java.lang.Double.class);
}
@ManagedMetric(metricType = MetricType.GAUGE, displayName = "Lock time")
public double getLockTimeRatio() {
return getGlobalLockData("ratio", java.lang.Double.class);
}
@ManagedMetric(metricType = MetricType.GAUGE, displayName = "Current Queue")
public int getCurrentQueueTotal() {
return getCurrentQueue("total");
}
@ManagedMetric(metricType = MetricType.GAUGE, displayName = "Reader Queue")
public int getCurrentQueueReaders() {
return getCurrentQueue("readers");
}
@ManagedMetric(metricType = MetricType.GAUGE, displayName = "Writer Queue")
public int getCurrentQueueWriters() {
return getCurrentQueue("writers");
}
@SuppressWarnings("unchecked")
private <T> T getGlobalLockData(String key, Class<T> targetClass) {
DBObject globalLock = (DBObject) getServerStatus().get("globalLock");
return (T) globalLock.get(key);
}
private int getCurrentQueue(String key) {
Document globalLock = (Document) getServerStatus().get("globalLock");
Document currentQueue = (Document) globalLock.get("currentQueue");
return (Integer) currentQueue.get(key);
}
}