/*
 * 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.pulsar.broker.loadbalance.extensions.filter;

import java.util.Map;
import java.util.concurrent.CompletableFuture;
import org.apache.pulsar.broker.loadbalance.extensions.LoadManagerContext;
import org.apache.pulsar.broker.loadbalance.extensions.data.BrokerLookupData;
import org.apache.pulsar.broker.loadbalance.extensions.policies.AntiAffinityGroupPolicyHelper;
import org.apache.pulsar.common.naming.ServiceUnitId;

/**
 * Filter by anti-affinity-group-policy.
 */
public class AntiAffinityGroupPolicyFilter implements BrokerFilter {

    public static final String FILTER_NAME = "broker_anti_affinity_group_filter";

    private final AntiAffinityGroupPolicyHelper helper;

    public AntiAffinityGroupPolicyFilter(AntiAffinityGroupPolicyHelper helper) {
        this.helper = helper;
    }

    @Override
    public CompletableFuture<Map<String, BrokerLookupData>> filterAsync(
            Map<String, BrokerLookupData> brokers, ServiceUnitId serviceUnitId, LoadManagerContext context) {
        return helper.filterAsync(brokers, serviceUnitId.toString());
    }


    @Override
    public String name() {
        return FILTER_NAME;
    }
}
