com.hazelcast.cp.internal.TermChangeAwareService Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, 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.cp.internal;
import com.hazelcast.cp.CPGroupId;
/**
* Services can implement this interface to get notified when there is
* a leader change in a Raft group. After a new leader is elected,
* a special commit is made first to notify services via this interface.
*/
public interface TermChangeAwareService {
/**
* Invokes as part of the first commit after a new leader is elected.
*
* @param groupId id of the Raft group in which a new leader is elected
* @param commitIndex index of the commit in the Raft log
*/
void onNewTermCommit(CPGroupId groupId, long commitIndex);
}