com.netflix.spectator.api.CompositeMeter Maven / Gradle / Ivy
/*
* Copyright 2014-2019 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.spectator.api;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
/**
* Base class for composite implementations of core meter types.
*/
class CompositeMeter implements Meter {
/** Identifier for the meter. */
protected final Id id;
/** Underlying meters that are keeping the data. */
protected final Collection meters;
/**
* Create a new instance.
*
* @param id
* Identifier for the meter.
* @param meters
* Set of meters that make up the composite.
*/
CompositeMeter(Id id, Collection meters) {
this.id = id;
this.meters = meters;
}
@Override public Id id() {
return this.id;
}
@Override public boolean hasExpired() {
for (Meter m : meters) {
if (m != null && !m.hasExpired()) return false;
}
return true;
}
@Override public Iterable measure() {
final List ms = new ArrayList<>();
for (Meter m : meters) {
if (m != null) {
for (Measurement measurement : m.measure()) {
ms.add(measurement);
}
}
}
return ms;
}
}