com.hotels.styx.api.Clocks Maven / Gradle / Ivy
/*
Copyright (C) 2013-2018 Expedia 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.hotels.styx.api;
import java.time.Instant;
/**
* Static utility methods pertaining to {@code Clock} instances.
*/
public final class Clocks {
private Clocks() {
}
/**
* Returns a clock that uses the system time.
*/
public static Clock systemClock() {
return System::currentTimeMillis;
}
/**
* Returns a clock that always returns the same instant. Useful for testing.
*/
public static Clock stoppedClock(Instant now) {
return now::toEpochMilli;
}
}