org.apache.druid.server.router.TimeBoundaryTieredBrokerSelectorStrategy.java Source code

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Here is the source code for org.apache.druid.server.router.TimeBoundaryTieredBrokerSelectorStrategy.java

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/*
 * 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.druid.server.router;

import com.google.common.base.Optional;
import com.google.common.collect.Iterables;
import org.apache.druid.query.Query;
import org.apache.druid.query.timeboundary.TimeBoundaryQuery;

/**
 */
public class TimeBoundaryTieredBrokerSelectorStrategy implements TieredBrokerSelectorStrategy {
    @Override
    public Optional<String> getBrokerServiceName(TieredBrokerConfig tierConfig, Query query) {
        // Somewhat janky way of always selecting highest priority broker for this type of query
        if (query instanceof TimeBoundaryQuery) {
            return Optional.of(Iterables.getFirst(tierConfig.getTierToBrokerMap().values(),
                    tierConfig.getDefaultBrokerServiceName()));
        }

        return Optional.absent();
    }
}