/**
* Copyright (c) 2002-2012 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.ha.cluster;
/**
* Sits closest to the distributed master election algorithm and can provide input to
* it and also delegate events to listeners.
* <p/>
* (DISTRIBUTED MASTER ELECTION THINGIE) ----- (MasterElectionClient for db 1) ----- (listener 1)
* | |----- (listener 2)
* |
* (MasterElectionClient for db 2)
* |
* |
* (listener 3)
*/
public interface ClusterEvents
{
/**
* When a member has finished a transition to a particular role, i.e. master or slave,
* then it should call this which will broadcast the new status to the cluster.
*
* @param role
*/
void memberIsAvailable( String role );
void addClusterEventListener( ClusterEventListener listener );
void removeClusterEventListener( ClusterEventListener listener );
}