com.netflix.spectator.api.SystemClock 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;
/**
* Clock implementation that uses {@link System#currentTimeMillis()} and {@link System#nanoTime()}.
* Implemented as an enum to that the clock instance will be serializable if using in environments
* like Spark or Flink.
*/
enum SystemClock implements Clock {
/** Singleton instance for the system clock. */
INSTANCE;
@Override public long wallTime() {
return System.currentTimeMillis();
}
@Override public long monotonicTime() {
return System.nanoTime();
}
}