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 lombok.extern.slf4j.Slf4j;
  import org.apache.skywalking.oap.server.core.analysis.manual.networkalias.NetworkAddressAlias;
  import org.apache.skywalking.oap.server.core.storage.cache.INetworkAddressAliasDAO;
  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.storage.plugin.jdbc.common.JDBCTableInstaller;
  import org.apache.skywalking.oap.server.storage.plugin.jdbc.common.TableHelper;
  
  import java.util.ArrayList;
  import java.util.List;
  
  @Slf4j
  public class JDBCNetworkAddressAliasDAO extends JDBCSQLExecutor implements INetworkAddressAliasDAO {
      private final JDBCClient jdbcClient;
      private final TableHelper tableHelper;
  
      public JDBCNetworkAddressAliasDAO(JDBCClient jdbcClient, ModuleManager moduleManager) {
          this.jdbcClient = jdbcClient;
          this.tableHelper = new TableHelper(moduleManager, jdbcClient);
      }
  
      @Override
      @SneakyThrows
      public List<NetworkAddressAlias> loadLastUpdate(long lastUpdateTime) {
          final var tables = tableHelper.getTablesWithinTTL(NetworkAddressAlias.INDEX_NAME);
          final var results = new ArrayList<NetworkAddressAlias>();
  
          for (final var table : tables) {
              final var sql = new StringBuilder()
                  .append("select * from ").append(table)
                  .append(" where ")
                  .append(JDBCTableInstaller.TABLE_COLUMN).append(" = ? ")
                  .append(" and ").append(NetworkAddressAlias.LAST_UPDATE_TIME_BUCKET).append(">?");
  
              results.addAll(
                  jdbcClient.executeQuery(
                      sql.toString(),
                      resultSet -> {
                          List<NetworkAddressAlias> networkAddressAliases = new ArrayList<>();
                          NetworkAddressAlias networkAddressAlias;
                          do {
                              networkAddressAlias = (NetworkAddressAlias) toStorageData(
                                  resultSet, NetworkAddressAlias.INDEX_NAME, new NetworkAddressAlias.Builder());
                              if (networkAddressAlias != null) {
                                  networkAddressAliases.add(networkAddressAlias);
                              }
                          }
                          while (networkAddressAlias != null);
                          return networkAddressAliases;
                      },
                      NetworkAddressAlias.INDEX_NAME, lastUpdateTime)
              );
          }
          return results;
      }
  }
  