001/*
002 * (C) Copyright 2017 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bdelbosc
018 */
019package org.nuxeo.lib.stream.log;
020
021import java.util.Collection;
022
023/**
024 * Listener to be notified on partition rebalancing.
025 *
026 * @since 9.3
027 */
028public interface RebalanceListener {
029
030    void onPartitionsRevoked(Collection<LogPartition> partitions);
031
032    void onPartitionsAssigned(Collection<LogPartition> partitions);
033
034    // @since 11.1
035    default void onPartitionsLost(Collection<LogPartition> partitions) {
036        onPartitionsRevoked(partitions);
037    }
038}