org.neo4j.kernel.ha.cluster.HighAvailabilityMemberChangeEvent Maven / Gradle / Ivy

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/*
 * 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.kernel.ha.cluster;

import java.net.URI;

import org.neo4j.cluster.InstanceId;

/**
 * This event represents a change in the cluster members internal state. The possible states
 * are enumerated in {@link HighAvailabilityMemberState}.
 */
public class HighAvailabilityMemberChangeEvent
{
    private final HighAvailabilityMemberState oldState;
    private final HighAvailabilityMemberState newState;
    private final InstanceId instanceId;
    private final URI serverHaUri;

    public HighAvailabilityMemberChangeEvent( HighAvailabilityMemberState oldState,
                                              HighAvailabilityMemberState newState,
                                              InstanceId instanceId, URI serverHaUri )
    {
        this.oldState = oldState;
        this.newState = newState;
        this.instanceId = instanceId;
        this.serverHaUri = serverHaUri;
    }

    public HighAvailabilityMemberState getOldState()
    {
        return oldState;
    }

    public HighAvailabilityMemberState getNewState()
    {
        return newState;
    }

    public InstanceId getInstanceId()
    {
        return instanceId;
    }

    public URI getServerHaUri()
    {
        return serverHaUri;
    }

    @Override
    public String toString()
    {
        return "HA Member State Event[ old state: "+oldState+", new state: "+newState+", server cluster URI: "+
                instanceId +", server HA URI: "+serverHaUri+"]";
    }
}