/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.core;
/**
* The InitializingMembershipListener is a {@link MembershipListener} that first receives a
* {@link InitialMembershipEvent} when it is registered so it immediately knows which members are available. After
* that event has been received, it will receive the normal MembershipEvents.
*
* When the InitializingMembershipListener already is registered on a {@link Cluster} and is registered again on the same
* Cluster instance, it will not receive an additional MembershipInitializeEvent. This is a once only event.
*
* @author Peter Veentjer.
* @see Cluster#addMembershipListener(MembershipListener)
* @see com.hazelcast.core.MembershipEvent#getMembers()
*/
public interface InitialMembershipListener extends MembershipListener {
/**
* Called when this listener is registered.
*
* @param event the MembershipInitializeEvent received when the listener is registered
*/
void init(InitialMembershipEvent event);
}