/**
* 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.hive.common.metrics;
import javax.management.DynamicMBean;
import javax.management.JMException;
/**
* MBean definition for metrics tracking from jmx
*/
public interface MetricsMBean extends DynamicMBean {
/**
* Check if we're tracking a certain named key/metric
*/
public abstract boolean hasKey(String name);
/**
* Add a key/metric and its value to track
* @param name Name of the key/metric
* @param value value associated with the key
*/
public abstract void put(String name, Object value);
/**
*
* @param name
* @return value associated with the key
* @throws JMException
*/
public abstract Object get(String name) throws JMException;
/**
* Removes all the keys and values from this MetricsMBean.
*/
void clear();
}