com.netflix.spectator.api.DefaultDistributionSummary Maven / Gradle / Ivy
/**
* Copyright 2015 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.List;
import java.util.concurrent.atomic.AtomicLong;
/** Distribution summary implementation for the default registry. */
final class DefaultDistributionSummary implements DistributionSummary {
private final Clock clock;
private final Id id;
private final AtomicLong count;
private final AtomicLong totalAmount;
/** Create a new instance. */
DefaultDistributionSummary(Clock clock, Id id) {
this.clock = clock;
this.id = id;
count = new AtomicLong(0L);
totalAmount = new AtomicLong(0L);
}
@Override public Id id() {
return id;
}
@Override public boolean hasExpired() {
return false;
}
@Override public void record(long amount) {
if (amount >= 0) {
totalAmount.addAndGet(amount);
count.incrementAndGet();
}
}
@Override public Iterable measure() {
final long now = clock.wallTime();
final List ms = new ArrayList<>(2);
ms.add(new Measurement(id.withTag(Statistic.count), now, count.get()));
ms.add(new Measurement(id.withTag(Statistic.totalAmount), now, totalAmount.get()));
return ms;
}
@Override public long count() {
return count.get();
}
@Override public long totalAmount() {
return totalAmount.get();
}
}