com.netflix.servo.util.ManualClock Maven / Gradle / Ivy
/**
* Copyright 2013 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.servo.util;
import java.util.concurrent.atomic.AtomicLong;
/**
* Mostly for testing, this clock must be explicitly set to a given value. Defaults to init.
*/
public class ManualClock implements Clock {
private final AtomicLong time;
/**
* Construct a new clock setting the current time to {@code init}.
*
* @param init Number of milliseconds to use as the initial time.
*/
public ManualClock(long init) {
time = new AtomicLong(init);
}
/**
* Update the current time to {@code t}.
*
* @param t Number of milliseconds to use for the current time.
*/
public void set(long t) {
time.set(t);
}
/**
* {@inheritDoc}
*/
public long now() {
return time.get();
}
/**
* {@inheritDoc}
*/
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ManualClock clock = (ManualClock) o;
return now() == clock.now();
}
/**
* {@inheritDoc}
*/
@Override
public int hashCode() {
return Long.valueOf(now()).hashCode();
}
}