/**
* 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;
import java.net.URI;
import org.neo4j.cluster.BindingListener;
import org.neo4j.cluster.client.ClusterClient;
import org.neo4j.cluster.protocol.cluster.ClusterConfiguration;
import org.neo4j.kernel.ha.cluster.ClusterEventListener;
import org.neo4j.kernel.ha.cluster.ClusterEvents;
import org.neo4j.kernel.ha.cluster.ClusterMemberState;
import org.neo4j.management.ClusterDatabaseInfo;
public class ClusterDatabaseInfoProvider
{
private URI me;
private String id;
private String status;
private String[] roles;
private String[] uris;
private long lastCommittedTxId;
private long lastUpdateTime;
public ClusterDatabaseInfoProvider( ClusterEvents events, ClusterClient clusterClient )
{
events.addClusterEventListener( new ClusterDatabaseInfoProviderListener() );
clusterClient.addBindingListener( new BindingListener()
{
@Override
public void listeningAt( URI me )
{
ClusterDatabaseInfoProvider.this.me = me;
}
} );
}
public ClusterDatabaseInfo getInfo()
{
return new ClusterDatabaseInfo( id, status, roles, uris, lastCommittedTxId, lastUpdateTime );
}
private class ClusterDatabaseInfoProviderListener implements ClusterEventListener
{
@Override
public void masterIsElected( URI masterUri )
{
}
@Override
public void memberIsAvailable( String role, URI instanceClusterUri, Iterable<URI> instanceUris )
{
if ( me.equals( instanceClusterUri ) )
{
if ( ClusterConfiguration.COORDINATOR.equals( role ) )
{
status = ClusterMemberState.MASTER.name();
roles = new String[] { ClusterMemberState.MASTER.name() };
}
if ( ClusterConfiguration.SLAVE.equals( role ) )
{
status = ClusterMemberState.SLAVE.name();
roles = new String[] { ClusterMemberState.SLAVE.name() };
}
}
}
}
}