/*
 * 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.dolphinscheduler.server.master.cluster;

import java.util.List;

public class MasterSlotChangeListenerAdaptor
        implements
            IMasterSlotChangeListener,
            IClusters.IClustersChangeListener<MasterServerMetadata> {

    private final MasterSlotManager masterSlotManager;

    private final MasterClusters masterClusters;

    public MasterSlotChangeListenerAdaptor(final MasterSlotManager masterSlotManager,
                                           final MasterClusters masterClusters) {
        this.masterSlotManager = masterSlotManager;
        this.masterClusters = masterClusters;
    }

    @Override
    public void onMasterSlotChanged(final List<MasterServerMetadata> normalMasterServers) {
        masterSlotManager.doReBalance(normalMasterServers);
    }

    @Override
    public void onServerAdded(MasterServerMetadata server) {
        onMasterSlotChanged(masterClusters.getNormalServers());
    }

    @Override
    public void onServerRemove(MasterServerMetadata server) {
        onMasterSlotChanged(masterClusters.getNormalServers());
    }

    @Override
    public void onServerUpdate(MasterServerMetadata server) {
        onMasterSlotChanged(masterClusters.getNormalServers());
    }
}
