// // 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 com.cloud.utils.nio; import java.util.concurrent.Callable; import com.cloud.utils.exception.TaskExecutionException; /** * Task represents one todo item for the AgentManager or the AgentManager */ public abstract class Task implements Callable<Boolean> { public enum Type { CONNECT, // Process a new connection. DISCONNECT, // Process an existing connection disconnecting. DATA, // data incoming. CONNECT_FAILED, // Connection failed. OTHER // Allows other tasks to be defined by the caller. }; Object _data; Type _type; Link _link; public Task(final Type type, final Link link, final byte[] data) { _data = data; _type = type; _link = link; } public Task(final Type type, final Link link, final Object data) { _data = data; _type = type; _link = link; } protected Task() { } public Type getType() { return _type; } public Link getLink() { return _link; } public byte[] getData() { return (byte[])_data; } public Object get() { return _data; } @Override public String toString() { return _type.toString(); } abstract protected void doTask(Task task) throws TaskExecutionException; @Override public Boolean call() throws TaskExecutionException { doTask(this); return true; } }