/*
* 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.twill.internal.state;
import org.apache.twill.api.Command;
/**
*
*/
public interface Message {
/**
* Type of message.
*/
enum Type {
SYSTEM,
USER
}
/**
* Scope of the message.
*/
enum Scope {
APPLICATION,
ALL_RUNNABLE,
RUNNABLE
}
Type getType();
Scope getScope();
/**
* @return the name of the target runnable if scope is {@link Scope#RUNNABLE} or {@code null} otherwise.
*/
String getRunnableName();
Command getCommand();
}