/** | |
* 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 com.alibaba.jstorm.common.metric; | |
import com.google.common.base.Joiner; | |
import org.slf4j.Logger; | |
import org.slf4j.LoggerFactory; | |
import backtype.storm.utils.DisruptorQueue; | |
import com.codahale.metrics.Gauge; | |
import com.codahale.metrics.health.HealthCheck; | |
public class QueueGauge extends HealthCheck implements Gauge<Double> { | |
private static final Logger LOG = LoggerFactory.getLogger(QueueGauge.class); | |
public static final String QUEUE_IS_FULL = " is full"; | |
DisruptorQueue queue; | |
String name; | |
Result healthy; | |
public QueueGauge(DisruptorQueue queue, String... names) { | |
this.queue = queue; | |
this.name = Joiner.on("-").join(names); | |
this.healthy = Result.healthy(); | |
} | |
@Override | |
public Double getValue() { | |
Double ret = (double) queue.pctFull(); | |
return ret; | |
} | |
@Override | |
protected Result check() throws Exception { | |
// TODO Auto-generated method stub | |
Double ret = (double) queue.pctFull(); | |
if (ret > 0.9) { | |
return Result.unhealthy(name + QUEUE_IS_FULL); | |
} else { | |
return healthy; | |
} | |
} | |
} |