/*
 * 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.skywalking.oap.server.core.storage.query;

import java.io.IOException;
import java.util.List;
import org.apache.skywalking.oap.server.core.analysis.Stream;
import org.apache.skywalking.oap.server.core.analysis.worker.TopNStreamProcessor;
import org.apache.skywalking.oap.server.core.query.input.Duration;
import org.apache.skywalking.oap.server.core.query.input.TopNCondition;
import org.apache.skywalking.oap.server.core.query.type.SelectedRecord;
import org.apache.skywalking.oap.server.library.module.Service;

/**
 * Query the records sampled by {@link Stream} = {@link TopNStreamProcessor}
 *
 * @since 8.0.0
 */
public interface ITopNRecordsQueryDAO extends Service {
    List<SelectedRecord> readSampledRecords(TopNCondition condition,
                                            final String valueColumnName,
                                            Duration duration) throws IOException;
}
