/*
 * 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.ignite.spi.collision;

import java.util.EventListener;

/**
 * Listener to be set on {@link CollisionSpi} for notification of external
 * collision events (e.g. job stealing). Once grid receives such notification,
 * it will immediately invoke collision SPI.
 */
public interface CollisionExternalListener extends EventListener {
    /**
     * Callback invoked by Collision SPI whenever an external collision
     * event occurs.
     */
    public void onExternalCollision();
}
