| /* |
| * 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.cassandra.service; |
| |
| import java.net.InetAddress; |
| |
| /** |
| * Interface on which interested parties can be notified of high level endpoint |
| * state changes. |
| * |
| * Note that while IEndpointStateChangeSubscriber notify about gossip related |
| * changes (IEndpointStateChangeSubscriber.onJoin() is called when a node join |
| * gossip), this interface allows to be notified about higher level events. |
| */ |
| public interface IEndpointLifecycleSubscriber |
| { |
| /** |
| * Called when a new node joins the cluster, i.e. either has just been |
| * bootstrapped or "instajoins". |
| * |
| * @param endpoint the newly added endpoint. |
| */ |
| public void onJoinCluster(InetAddress endpoint); |
| |
| /** |
| * Called when a new node leave the cluster (decommission or removeToken). |
| * |
| * @param endpoint the endpoint that is leaving. |
| */ |
| public void onLeaveCluster(InetAddress endpoint); |
| |
| /** |
| * Called when a node is marked UP. |
| * |
| * @param endpoint the endpoint marked UP. |
| */ |
| public void onUp(InetAddress endpoint); |
| |
| /** |
| * Called when a node is marked DOWN. |
| * |
| * @param endpoint the endpoint marked DOWN. |
| */ |
| public void onDown(InetAddress endpoint); |
| |
| /** |
| * Called when a node has moved (to a new token). |
| * |
| * @param endpoint the endpoint that has moved. |
| */ |
| public void onMove(InetAddress endpoint); |
| } |