com.netflix.spectator.atlas.StepClock 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.atlas;
import com.netflix.spectator.api.Clock;
/**
* Wraps a clock implementation with one that only reports wall times on
* exact boundaries of the step. This is used so that measurements sampled
* from gauges will all have the same timestamp for a given reporting
* interval.
*/
class StepClock implements Clock {
private final Clock impl;
private final long step;
/** Create a new instance. */
StepClock(Clock impl, long step) {
this.impl = impl;
this.step = step;
}
@Override
public long wallTime() {
return impl.wallTime() / step * step;
}
@Override
public long monotonicTime() {
return impl.monotonicTime();
}
}