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.RequiredArgsConstructor;
  import lombok.SneakyThrows;
  import org.apache.skywalking.oap.server.core.browser.manual.errorlog.BrowserErrorLogRecord;
  import org.apache.skywalking.oap.server.core.browser.source.BrowserErrorCategory;
  import org.apache.skywalking.oap.server.core.query.input.Duration;
  import org.apache.skywalking.oap.server.core.query.type.BrowserErrorLog;
  import org.apache.skywalking.oap.server.core.query.type.BrowserErrorLogs;
  import org.apache.skywalking.oap.server.core.storage.query.IBrowserLogQueryDAO;
  import org.apache.skywalking.oap.server.library.client.jdbc.hikaricp.JDBCClient;
  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.SQLAndParameters;
  import org.apache.skywalking.oap.server.storage.plugin.jdbc.common.TableHelper;
  
  import java.util.ArrayList;
  
  import static java.util.Comparator.comparing;
  import static java.util.Objects.nonNull;
  import static java.util.stream.Collectors.toList;
  
  @RequiredArgsConstructor
  public class JDBCBrowserLogQueryDAO implements IBrowserLogQueryDAO {
      protected final JDBCClient jdbcClient;
      protected final TableHelper tableHelper;
  
      @Override
      @SneakyThrows
      public BrowserErrorLogs queryBrowserErrorLogs(String serviceId,
                                                    String serviceVersionId,
                                                    String pagePathId,
                                                    BrowserErrorCategory category,
                                                    Duration duration,
                                                    int limit,
                                                    int from) {
          final var logs = new ArrayList<BrowserErrorLog>();
          final var tables = tableHelper.getTablesForRead(
              BrowserErrorLogRecord.INDEX_NAME, duration.getStartTimeBucket(), duration.getEndTimeBucket()
          );
  
          for (String table : tables) {
              final var sqlAndParameters = buildSQL(
                  serviceId, serviceVersionId, pagePathId,
                  category, duration, limit, from, table);
  
              jdbcClient.executeQuery(
                  sqlAndParameters.sql(),
                  resultSet -> {
                      while (resultSet.next()) {
                          String dataBinaryBase64 = resultSet.getString(BrowserErrorLogRecord.DATA_BINARY);
                          if (nonNull(dataBinaryBase64)) {
                              BrowserErrorLog log = parserDataBinary(dataBinaryBase64);
                              logs.add(log);
                          }
                      }
  
                      return null;
                  },
                  sqlAndParameters.parameters()
              );
          }
  
          return new BrowserErrorLogs(
              logs
                  .stream()
                  .sorted(comparing(BrowserErrorLog::getTime).reversed())
                  .skip(from)
                  .limit(limit)
                  .collect(toList())
          );
      }
  
      protected SQLAndParameters buildSQL(
          String serviceId, String serviceVersionId, String pagePathId,
          BrowserErrorCategory category, Duration duration, int limit, int from,
          String table) {
          final var sql = new StringBuilder("select " + BrowserErrorLogRecord.DATA_BINARY);
          final var parameters = new ArrayList<>(9);
          sql.append(" from ").append(table)
             .append(" where ").append(JDBCTableInstaller.TABLE_COLUMN).append(" = ? ");
          parameters.add(BrowserErrorLogRecord.INDEX_NAME);
  
          long startSecondTB = 0, endSecondTB = 0;
          if (nonNull(duration)) {
              startSecondTB = duration.getStartTimeBucketInSec();
              endSecondTB = duration.getEndTimeBucketInSec();
          }
          if (startSecondTB != 0 && endSecondTB != 0) {
              sql.append(" and ").append(BrowserErrorLogRecord.TIME_BUCKET).append(" >= ?");
              parameters.add(startSecondTB);
              sql.append(" and ").append(BrowserErrorLogRecord.TIME_BUCKET).append(" <= ?");
              parameters.add(endSecondTB);
          }
  
          if (StringUtil.isNotEmpty(serviceId)) {
              sql.append(" and ").append(BrowserErrorLogRecord.SERVICE_ID).append(" = ?");
              parameters.add(serviceId);
          }
          if (StringUtil.isNotEmpty(serviceVersionId)) {
              sql.append(" and ").append(BrowserErrorLogRecord.SERVICE_VERSION_ID).append(" = ?");
              parameters.add(serviceVersionId);
          }
          if (StringUtil.isNotEmpty(pagePathId)) {
              sql.append(" and ").append(BrowserErrorLogRecord.PAGE_PATH_ID).append(" = ?");
              parameters.add(pagePathId);
          }
          if (nonNull(category)) {
              sql.append(" and ").append(BrowserErrorLogRecord.ERROR_CATEGORY).append(" = ?");
              parameters.add(category.getValue());
          }
  
          sql.append(" order by ").append(BrowserErrorLogRecord.TIMESTAMP).append(" DESC ");
          sql.append(" limit ").append(from + limit);
  
          return new SQLAndParameters(sql.toString(), parameters);
      }
  }
  