1 package org.apache.helix;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 /**
23 * CONTROLLER: cluster managing component is a controller
24 * PARTICIPANT: participate in the cluster state changes
25 * SPECTATOR: interested in the state changes in the cluster
26 * CONTROLLER_PARTICIPANT:
27 * special participant that competes for the leader of CONTROLLER_CLUSTER
28 * used in cluster controller of distributed mode {@HelixControllerMain}
29 *
30 */
31 public enum InstanceType
32 {
33 CONTROLLER,
34 PARTICIPANT,
35 SPECTATOR,
36 CONTROLLER_PARTICIPANT,
37 ADMINISTRATOR
38 }