/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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 com.hazelcast.internal.metrics.impl;
import com.hazelcast.internal.metrics.ProbeFunction;
/**
* A Probe Instance is an actual instance of a probe.
*
* A probe instance contains:
* <ol>
* <li>A source object, e.g. an OperationService instance</li>
* <li>A ProbeFunction: e.g. an {@link com.hazelcast.internal.metrics.LongProbeFunction} that retrieves the number of
* executed operations.</li>
* </ol>
*
* @param <S>
*/
class ProbeInstance<S> {
final String name;
volatile ProbeFunction function;
volatile S source;
ProbeInstance(String name, S source, ProbeFunction function) {
this.name = name;
this.function = function;
this.source = source;
}
}