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Library implementing Paxos and Heartbeat components required for High Availability Neo4j
/*
* Copyright (c) 2002-2016 "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 .
*/
package org.neo4j.cluster.member.paxos;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.net.URI;
import org.neo4j.cluster.InstanceId;
/**
* This message is broadcast when a member of the cluster declares that
* it is not ready to serve a particular role for the cluster.
*/
public class MemberIsUnavailable
implements Externalizable
{
private String role;
private InstanceId instanceId;
private URI clusterUri;
public MemberIsUnavailable()
{
}
public MemberIsUnavailable( String role, InstanceId instanceId, URI clusterUri )
{
this.role = role;
this.instanceId = instanceId;
this.clusterUri = clusterUri;
}
public String getRole()
{
return role;
}
public InstanceId getInstanceId()
{
return instanceId;
}
public URI getClusterUri()
{
return clusterUri;
}
@Override
public void writeExternal( ObjectOutput out ) throws IOException
{
out.writeUTF( role );
out.writeObject( instanceId );
if ( clusterUri != null )
{
out.writeUTF( clusterUri.toString() );
}
}
@Override
public void readExternal( ObjectInput in ) throws IOException, ClassNotFoundException
{
role = in.readUTF();
instanceId = (InstanceId) in.readObject();
if ( in.available() != 0 )
{
clusterUri = URI.create( in.readUTF() );
}
}
@Override
public String toString()
{
return String.format( "MemberIsUnavailable[ Role: %s, InstanceId: %s, ClusterURI: %s ]",
role, instanceId.toString(), (clusterUri == null) ? null : clusterUri.toString() );
}
}