| /* |
| 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 interfaces |
| |
| // a common interface for app management service |
| // an app management service monitors the lifecycle of applications, |
| // it is responsible for reporting application status to the scheduler, |
| // that helps the scheduler to manage the application lifecycle natively. |
| type AppManager interface { |
| // the name of this application service |
| // this info is exposed to the scheduler so we know what kind of apps |
| // the scheduler is able to supervise. |
| Name() string |
| |
| // if the service needs to init any objects, this is the place |
| // the initialization of the service must not start any of go routines, |
| // this will be called before starting the service. |
| ServiceInit() error |
| |
| // if the service has some internal stuff to run, this is the place to run them. |
| // some implementation may not need to implement this. |
| Start() error |
| |
| // if there is some go routines running in start, properly stop them while |
| // the stop() function is called. |
| Stop() |
| } |