com.netflix.spectator.api.NoopTimer 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.Collections;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;
/** Counter implementation for the no-op registry. */
enum NoopTimer implements Timer {
/** Singleton instance. */
INSTANCE;
@Override public Id id() {
return NoopId.INSTANCE;
}
@Override public boolean hasExpired() {
return false;
}
@Override public void record(long amount, TimeUnit unit) {
}
@Override public Iterable measure() {
return Collections.emptyList();
}
@Override public T record(Callable f) throws Exception {
return f.call();
}
@Override public void record(Runnable f) {
f.run();
}
@Override public long count() {
return 0L;
}
@Override public long totalTime() {
return 0L;
}
}