/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.apache.brooklyn.util.core.task;

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Future;

import org.apache.brooklyn.api.mgmt.Task;

/**
 * The scheduler is an internal mechanism to decorate {@link Task}s.
 *
 * It can control how the tasks are scheduled for execution (e.g. single-threaded execution,
 * prioritised, etc).
 */
public interface TaskScheduler {
    
    public void injectExecutor(ExecutorService executor);

    /**
     * Called by {@link BasicExecutionManager} to schedule tasks.
     */
    public <T> Future<T> submit(Callable<T> c);
}
