io.continual.services.Service Maven / Gradle / Ivy
/*
* Copyright 2019, Continual.io
*
* Licensed 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 io.continual.services;
public interface Service
{
public class FailedToStart extends Exception
{
public FailedToStart ( Throwable t ) { super(t); }
private static final long serialVersionUID = 1L;
}
/**
* Start this service, post construction.
*/
void start () throws FailedToStart;
/**
* Request this service to shutdown.
*/
void requestFinish ();
/**
* Return true if the service is running.
* @return true if the service is running
*/
boolean isRunning ();
}