https://github.com/Netflix/concurrency-limits: concurrency-limits-core
  • Netflix Open Source Development 
Copyright 2018 Netflix, Inc.
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.

/**
 * Copyright 2018 Netflix, Inc.
 *
 * 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.netflix.concurrency.limits.limit.measurement;

import java.util.function.Function;


Contract for tracking a measurement such as a minimum or average of a sample set

/**
 * Contract for tracking a measurement such as a minimum or average of a sample set
 */
public interface Measurement {
    
Add a single sample and update the internal state.

Params:
  • sample – 
Returns:True if internal state was updated
/**
     * Add a single sample and update the internal state.
     * @param sample
     * @return True if internal state was updated
     */
    Number add(Number sample);
    
    
Returns:Return the current value
/**
     * @return Return the current value
     */
    Number get();
    
    
Reset the internal state as if no samples were ever added

/**
     * Reset the internal state as if no samples were ever added
     */
    void reset();

    void update(Function<Number, Number> operation);
}