/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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.elasticsearch.common.util.concurrent;
import org.elasticsearch.common.Priority;
import java.util.concurrent.Callable;
public abstract class PrioritizedCallable<T> implements Callable<T>, Comparable<PrioritizedCallable> {
private final Priority priority;
public static <T> PrioritizedCallable<T> wrap(Callable<T> callable, Priority priority) {
return new Wrapped<>(callable, priority);
}
protected PrioritizedCallable(Priority priority) {
this.priority = priority;
}
@Override
public int compareTo(PrioritizedCallable pc) {
return priority.compareTo(pc.priority);
}
public Priority priority() {
return priority;
}
static class Wrapped<T> extends PrioritizedCallable<T> {
private final Callable<T> callable;
private Wrapped(Callable<T> callable, Priority priority) {
super(priority);
this.callable = callable;
}
@Override
public T call() throws Exception {
return callable.call();
}
}
}