| /** |
| * 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.storm.container.cgroup; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * An interface to implement the basic functions to manage cgroups such as mount and mounting a hiearchy and creating cgroups. Also |
| * contains functions to access basic information of cgroups. |
| */ |
| public interface CgroupOperation { |
| |
| /** |
| * Get a list of hierarchies. |
| */ |
| List<Hierarchy> getHierarchies(); |
| |
| /** |
| * get a list of available subsystems. |
| */ |
| Set<SubSystem> getSubSystems(); |
| |
| /** |
| * Check if a subsystem is enabled. |
| */ |
| boolean isSubSystemEnabled(SubSystemType subsystem); |
| |
| /** |
| * get the first hierarchy that has a certain subsystem isMounted. |
| */ |
| Hierarchy getHierarchyWithSubSystem(SubSystemType subsystem); |
| |
| /** |
| * get the first hierarchy that has a certain list of subsystems isMounted. |
| */ |
| Hierarchy getHierarchyWithSubSystems(List<SubSystemType> subSystems); |
| |
| /** |
| * check if a hiearchy is mounted. |
| */ |
| boolean isMounted(Hierarchy hierarchy); |
| |
| /** |
| * mount a hierarchy. |
| */ |
| void mount(Hierarchy hierarchy) throws IOException; |
| |
| /** |
| * umount a heirarchy. |
| */ |
| void umount(Hierarchy hierarchy) throws IOException; |
| |
| /** |
| * create a cgroup. |
| */ |
| void createCgroup(CgroupCommon cgroup) throws SecurityException; |
| |
| /** |
| * delete a cgroup. |
| */ |
| void deleteCgroup(CgroupCommon cgroup) throws IOException; |
| } |