//
// 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;
}
}