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The Core Camel Java DSL based router
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.camel.cluster;
import java.util.Optional;
/**
* Marker interface for cluster events
*/
public interface CamelClusterEventListener {
interface Leadership extends CamelClusterEventListener {
/**
* Notify a change in the leadership for a particular cluster.
*
* @param view the cluster view
* @param leader the optional new leader
*/
void leadershipChanged(CamelClusterView view, Optional leader);
}
interface Membership extends CamelClusterEventListener {
/**
* Notify a change (addition) in the cluster composition.
*
* @param view the cluster view
* @param member the member that has been added
*/
void memberAdded(CamelClusterView view, CamelClusterMember member);
/**
* Notify a change (removal) in the cluster composition.
*
* @param view the cluster view
* @param member the member that has been removed
*/
void memberRemoved(CamelClusterView view, CamelClusterMember member);
}
}