org.apache.rocketmq.shaded.com.google.common.cache.RemovalListeners Maven / Gradle / Ivy
/*
* Copyright (C) 2011 The Guava Authors
*
* 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 org.apache.rocketmq.shaded.com.google.common.cache;
import static org.apache.rocketmq.shaded.com.google.common.base.Preconditions.checkNotNull;
import org.apache.rocketmq.shaded.com.google.common.annotations.GwtIncompatible;
import java.util.concurrent.Executor;
/**
* A collection of common removal listeners.
*
* @author Charles Fry
* @since 10.0
*/
@GwtIncompatible
@ElementTypesAreNonnullByDefault
public final class RemovalListeners {
private RemovalListeners() {}
/**
* Returns a {@code RemovalListener} which processes all eviction notifications using {@code
* executor}.
*
* @param listener the backing listener
* @param executor the executor with which removal notifications are asynchronously executed
*/
public static RemovalListener asynchronous(
RemovalListener listener, Executor executor) {
checkNotNull(listener);
checkNotNull(executor);
return (RemovalNotification notification) ->
executor.execute(() -> listener.onRemoval(notification));
}
}