package org.apache.helix;
/*
* 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.
*/
import org.apache.helix.api.id.ControllerId;
import org.apache.helix.participant.StateMachineEngine;
/**
* Autonomous controller
*/
public interface HelixMultiClusterController extends HelixRole, HelixService, HelixConnectionStateListener {
/**
* get controller id
* @return controller id
*/
ControllerId getControllerId();
/**
* get state machine engine
* @return state machine engine
*/
StateMachineEngine getStateMachineEngine();
/**
* add pre-connect callback
* @param callback
*/
void addPreConnectCallback(PreConnectCallback callback);
/**
* Add a LiveInstanceInfoProvider that is invoked before creating liveInstance.</br>
* This allows applications to provide additional information that will be published to zookeeper
* and become available for discovery</br>
* @see LiveInstanceInfoProvider#getAdditionalLiveInstanceInfo()
* @param liveInstanceInfoProvider
*/
void setLiveInstanceInfoProvider(LiveInstanceInfoProvider liveInstanceInfoProvider);
/**
* tell if this controller is leader of cluster
* @return
*/
boolean isLeader();
}