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.server.storage.plugin.elasticsearch.query;
  
  import java.io.IOException;
  import java.util.LinkedList;
  import java.util.List;
  
  import org.apache.skywalking.library.elasticsearch.requests.search.BoolQueryBuilder;
  import org.apache.skywalking.library.elasticsearch.requests.search.Query;
  import org.apache.skywalking.library.elasticsearch.requests.search.Search;
  import org.apache.skywalking.library.elasticsearch.requests.search.SearchBuilder;
  import org.apache.skywalking.library.elasticsearch.requests.search.Sort;
  import org.apache.skywalking.library.elasticsearch.response.search.SearchHit;
  import org.apache.skywalking.library.elasticsearch.response.search.SearchResponse;
  import org.apache.skywalking.oap.server.core.profiling.trace.ProfileTaskLogRecord;
  import org.apache.skywalking.oap.server.core.query.type.ProfileTaskLog;
  import org.apache.skywalking.oap.server.core.query.type.ProfileTaskLogOperationType;
  import org.apache.skywalking.oap.server.core.storage.profiling.trace.IProfileTaskLogQueryDAO;
  import org.apache.skywalking.oap.server.library.client.elasticsearch.ElasticSearchClient;
  import org.apache.skywalking.oap.server.storage.plugin.elasticsearch.base.EsDAO;
  import org.apache.skywalking.oap.server.storage.plugin.elasticsearch.base.IndexController;
  
  public class ProfileTaskLogEsDAO extends EsDAO implements IProfileTaskLogQueryDAO {
      private final int queryMaxSize;
  
      public ProfileTaskLogEsDAO(ElasticSearchClient client, int profileTaskQueryMaxSize) {
          super(client);
          // query log size use profile task query max size * per log count
          this.queryMaxSize = profileTaskQueryMaxSize * 50;
      }
  
      @Override
      public List<ProfileTaskLog> getTaskLogList() throws IOException {
          final String index = IndexController.LogicIndicesRegister.getPhysicalTableName(
              ProfileTaskLogRecord.INDEX_NAME);
          final BoolQueryBuilder query = Query.bool();
          if (IndexController.LogicIndicesRegister.isMergedTable(ProfileTaskLogRecord.INDEX_NAME)) {
              query.must(Query.term(IndexController.LogicIndicesRegister.RECORD_TABLE_NAME, ProfileTaskLogRecord.INDEX_NAME));
          }
          final SearchBuilder search =
              Search.builder().query(query)
                    .sort(ProfileTaskLogRecord.OPERATION_TIME, Sort.Order.DESC)
                    .size(queryMaxSize);
  
          final SearchResponse response = getClient().search(index, search.build());
  
          final LinkedList<ProfileTaskLog> tasks = new LinkedList<>();
          for (SearchHit searchHit : response.getHits().getHits()) {
              tasks.add(parseTaskLog(searchHit));
          }
  
          return tasks;
      }
  
      private ProfileTaskLog parseTaskLog(SearchHit data) {
          return ProfileTaskLog.builder()
                               .id(data.getId())
                               .taskId(
                                   (String) data.getSource().get(ProfileTaskLogRecord.TASK_ID))
                               .instanceId(
                                   (String) data.getSource().get(ProfileTaskLogRecord.INSTANCE_ID))
                               .operationType(ProfileTaskLogOperationType.parse(
                                   ((Number) data.getSource().get(
                                       ProfileTaskLogRecord.OPERATION_TYPE)).intValue()))
                               .operationTime(
                                   ((Number) data.getSource().get(
                                       ProfileTaskLogRecord.OPERATION_TIME)).longValue())
                               .build();
      }
  }
  