| /* |
| * 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.slider.providers.agent; |
| |
| /** The states a component instance can be. */ |
| public enum ContainerState { |
| INIT, // Container is not net activated |
| HEALTHY, // Agent is heartbeating |
| UNHEALTHY, // Container is unhealthy - no heartbeat for some interval |
| HEARTBEAT_LOST; // Container is lost - request a new instance |
| |
| /** |
| * Indicates whether or not it is a valid state to produce a command. |
| * |
| * @return true if command can be issued for this state. |
| */ |
| public boolean canIssueCommands() { |
| switch (this) { |
| case HEALTHY: |
| return true; |
| default: |
| return false; |
| } |
| } |
| } |