code: /*
   * 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.query.graphql.resolver;
  
  import graphql.kickstart.tools.GraphQLQueryResolver;
  import org.apache.skywalking.oap.query.graphql.type.TopNRecordsCondition;
  import org.apache.skywalking.oap.server.core.analysis.IDManager;
  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.core.query.type.TopNRecord;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * @since 8.0.0 This query is replaced by {@link MetricsQuery}, all queries have been delegated to there.
   */
  @Deprecated
  public class TopNRecordsQuery implements GraphQLQueryResolver {
      private MetricsQuery query;
  
      public TopNRecordsQuery(ModuleManager moduleManager) {
          query = new MetricsQuery(moduleManager);
      }
  
      public List<TopNRecord> getTopNRecords(TopNRecordsCondition condition) throws IOException {
          TopNCondition topNCondition = new TopNCondition();
          topNCondition.setName(condition.getMetricName());
          final IDManager.ServiceID.ServiceIDDefinition serviceIDDefinition = IDManager.ServiceID.analysisId(
              condition.getServiceId());
          topNCondition.setParentService(serviceIDDefinition.getName());
          // Scope is not required in topN record query.
          // topNCondition.setScope();
          topNCondition.setOrder(condition.getOrder());
          topNCondition.setTopN(condition.getTopN());
  
          final List<SelectedRecord> selectedRecords = query.readSampledRecords(topNCondition, condition.getDuration());
          List<TopNRecord> list = new ArrayList<>(selectedRecords.size());
          selectedRecords.forEach(record -> {
              TopNRecord top = new TopNRecord();
              top.setStatement(record.getName());
              top.setTraceId(record.getRefId());
              top.setLatency(Long.parseLong(record.getValue()));
              list.add(top);
          });
          return list;
      }
  }
  