1 /* 2 Copyright 2016 The Kubernetes Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package initsystem 18 19 // InitSystem is the interface that describe behaviors of an init system 20 type InitSystem interface { 21 // EnableCommand returns a string describing how to enable a service 22 EnableCommand(service string) string 23 24 // ServiceStart tries to start a specific service 25 ServiceStart(service string) error 26 27 // ServiceStop tries to stop a specific service 28 ServiceStop(service string) error 29 30 // ServiceRestart tries to reload the environment and restart the specific service 31 ServiceRestart(service string) error 32 33 // ServiceExists ensures the service is defined for this init system. 34 ServiceExists(service string) bool 35 36 // ServiceIsEnabled ensures the service is enabled to start on each boot. 37 ServiceIsEnabled(service string) bool 38 39 // ServiceIsActive ensures the service is running, or attempting to run. (crash looping in the case of kubelet) 40 ServiceIsActive(service string) bool 41 } 42