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.jdbc.common.dao;
  
  import lombok.SneakyThrows;
  import org.apache.skywalking.oap.server.core.profiling.trace.ProfileTaskRecord;
  import org.apache.skywalking.oap.server.core.query.type.ProfileTask;
  import org.apache.skywalking.oap.server.core.storage.profiling.trace.IProfileTaskQueryDAO;
  import org.apache.skywalking.oap.server.library.client.jdbc.hikaricp.JDBCClient;
  import org.apache.skywalking.oap.server.library.module.ModuleManager;
  import org.apache.skywalking.oap.server.library.util.StringUtil;
  import org.apache.skywalking.oap.server.storage.plugin.jdbc.common.JDBCTableInstaller;
  import org.apache.skywalking.oap.server.storage.plugin.jdbc.common.TableHelper;
  
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.util.ArrayList;
  import java.util.List;
  
  import static java.util.stream.Collectors.toList;
  
  public class JDBCProfileTaskQueryDAO implements IProfileTaskQueryDAO {
      private final JDBCClient jdbcClient;
      private final TableHelper tableHelper;
  
      public JDBCProfileTaskQueryDAO(JDBCClient jdbcClient, ModuleManager moduleManager) {
          this.jdbcClient = jdbcClient;
          this.tableHelper = new TableHelper(moduleManager, jdbcClient);
      }
  
      @Override
      @SneakyThrows
      public List<ProfileTask> getTaskList(String serviceId, String endpointName, Long startTimeBucket,
                                           Long endTimeBucket, Integer limit) {
          final var results = new ArrayList<ProfileTask>();
          final var tables = startTimeBucket == null || endTimeBucket == null ?
              tableHelper.getTablesWithinTTL(ProfileTaskRecord.INDEX_NAME) :
              tableHelper.getTablesForRead(ProfileTaskRecord.INDEX_NAME, startTimeBucket, endTimeBucket);
          for (final var table : tables) {
              final var condition = new ArrayList<>(4);
              final var sql = new StringBuilder()
                  .append("select * from ").append(table)
                  .append(" where ").append(JDBCTableInstaller.TABLE_COLUMN).append(" = ?");
              condition.add(ProfileTaskRecord.INDEX_NAME);
  
              if (startTimeBucket != null) {
                  sql.append(" and ").append(ProfileTaskRecord.TIME_BUCKET).append(" >= ? ");
                  condition.add(startTimeBucket);
              }
  
              if (endTimeBucket != null) {
                  sql.append(" and ").append(ProfileTaskRecord.TIME_BUCKET).append(" <= ? ");
                  condition.add(endTimeBucket);
              }
  
              if (StringUtil.isNotEmpty(serviceId)) {
                  sql.append(" and ").append(ProfileTaskRecord.SERVICE_ID).append("=? ");
                  condition.add(serviceId);
              }
  
              if (StringUtil.isNotEmpty(endpointName)) {
                  sql.append(" and ").append(ProfileTaskRecord.ENDPOINT_NAME).append("=?");
                  condition.add(endpointName);
              }
  
              sql.append(" ORDER BY ").append(ProfileTaskRecord.START_TIME).append(" DESC ");
  
              if (limit != null) {
                  sql.append(" LIMIT ").append(limit);
              }
  
              results.addAll(
                  jdbcClient.executeQuery(
                      sql.toString(),
                      resultSet -> {
                          final var tasks = new ArrayList<ProfileTask>();
                          while (resultSet.next()) {
                              tasks.add(parseTask(resultSet));
                          }
                          return tasks;
                      },
                      condition.toArray(new Object[0]))
              );
          }
          return limit == null ?
              results :
              results
                  .stream()
                  .limit(limit)
                  .collect(toList());
      }
  
      @Override
      @SneakyThrows
      public ProfileTask getById(String id) {
          if (StringUtil.isEmpty(id)) {
              return null;
          }
  
          final var tables = tableHelper.getTablesWithinTTL(ProfileTaskRecord.INDEX_NAME);
          for (String table : tables) {
              final StringBuilder sql = new StringBuilder();
              final ArrayList<Object> condition = new ArrayList<>(1);
              sql.append("select * from ").append(table)
                 .append(" where ")
                 .append(JDBCTableInstaller.TABLE_COLUMN).append(" = ? ")
                 .append(" and ")
                 .append(ProfileTaskRecord.TASK_ID + "=? LIMIT 1");
              condition.add(ProfileTaskRecord.INDEX_NAME);
              condition.add(id);
  
              final var r = jdbcClient.executeQuery(
                  sql.toString(),
                  resultSet -> {
                      if (resultSet.next()) {
                          return parseTask(resultSet);
                      }
                      return null;
                  },
                  condition.toArray(new Object[0]));
              if (r != null) {
                  return r;
              }
          }
          return null;
      }
  
      /**
       * parse profile task data
       */
      private ProfileTask parseTask(ResultSet data) throws SQLException {
          return ProfileTask.builder()
                            .id(data.getString(ProfileTaskRecord.TASK_ID))
                            .serviceId(data.getString(ProfileTaskRecord.SERVICE_ID))
                            .endpointName(data.getString(ProfileTaskRecord.ENDPOINT_NAME))
                            .startTime(data.getLong(ProfileTaskRecord.START_TIME))
                            .createTime(data.getLong(ProfileTaskRecord.CREATE_TIME))
                            .duration(data.getInt(ProfileTaskRecord.DURATION))
                            .minDurationThreshold(data.getInt(ProfileTaskRecord.MIN_DURATION_THRESHOLD))
                            .dumpPeriod(data.getInt(ProfileTaskRecord.DUMP_PERIOD))
                            .maxSamplingCount(data.getInt(ProfileTaskRecord.MAX_SAMPLING_COUNT))
                            .build();
      }
  }
  