org.apache.druid.server.QueryPrioritizationStrategy Maven / Gradle / Ivy

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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
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package org.apache.druid.server;

import com.fasterxml.jackson.annotation.JsonSubTypes;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import org.apache.druid.client.SegmentServerSelector;
import org.apache.druid.query.QueryPlus;
import org.apache.druid.server.scheduling.ManualQueryPrioritizationStrategy;
import org.apache.druid.server.scheduling.ThresholdBasedQueryPrioritizationStrategy;

import java.util.Optional;
import java.util.Set;

@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "strategy", defaultImpl = ManualQueryPrioritizationStrategy.class)
@JsonSubTypes(value = {
    @JsonSubTypes.Type(name = "manual", value = ManualQueryPrioritizationStrategy.class),
    @JsonSubTypes.Type(name = "threshold", value = ThresholdBasedQueryPrioritizationStrategy.class)
})
public interface QueryPrioritizationStrategy
{
   Optional computePriority(QueryPlus query, Set segments);
}