| /* |
| * 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.ignite.maintenance; |
| |
| import org.apache.ignite.lang.IgniteExperimental; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Maintenance action interface enables user to execute operations related to a particular {@link MaintenanceTask}. |
| * |
| * These operations may resolve maintenance situation (e.g. remove corrupted data files), get information |
| * about other ongoing maintenance action (e.g. if some action requires a lot of time and user wants to know |
| * current progress of the action) or cancel other ongoing action. |
| * |
| * List of maintenance actions available for each task is defined by {@link MaintenanceWorkflowCallback}. |
| * |
| * {@link MaintenanceRegistry} provides an access to maintenance actions for a {@link MaintenanceTask} with |
| * call {@link MaintenanceRegistry#actionsForMaintenanceTask(String)} |
| * |
| */ |
| @IgniteExperimental |
| public interface MaintenanceAction<T> { |
| /** |
| * Executes operations of current maintenance action. |
| * |
| * @return Result of the maintenance action. |
| */ |
| public T execute(); |
| |
| /** |
| * @return Mandatory human-readable name of maintenance action. |
| * All actions of single {@link MaintenanceWorkflowCallback} should have unique names. |
| */ |
| @NotNull public String name(); |
| |
| /** |
| * @return Optional user-readable description of maintenance action. |
| */ |
| @Nullable public String description(); |
| } |