code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC 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.openqa.selenium.grid.sessionmap.jdbc;
  
  import java.sql.Connection;
  import java.sql.DriverManager;
  import java.sql.SQLException;
  import java.util.NoSuchElementException;
  import org.openqa.selenium.grid.config.Config;
  import org.openqa.selenium.internal.Require;
  
  public class JdbcSessionMapOptions {
  
    private static final String SESSIONS_SECTION = "sessions";
  
    private final String jdbcUrl;
    private final String jdbcUser;
    private final String jdbcPassword;
  
    public JdbcSessionMapOptions(Config config) {
      Require.nonNull("Config", config);
  
      try {
        this.jdbcUrl = config.get(SESSIONS_SECTION, "jdbc-url").orElse("");
        this.jdbcUser = config.get(SESSIONS_SECTION, "jdbc-user").orElse("");
        this.jdbcPassword = config.get(SESSIONS_SECTION, "jdbc-password").orElse("");
  
        if (jdbcUrl.isEmpty()) {
          throw new JdbcException(
              "Missing JDBC Url value. Add sessions option value --jdbc-url <url-value>");
        }
      } catch (NoSuchElementException e) {
        throw new JdbcException(
            "Missing session options. Check and add all the following options \n "
                + "--jdbc-url <url> \n --jdbc-user <user> \n --jdbc-password <password>");
      }
    }
  
    public Connection getJdbcConnection() throws SQLException {
      return DriverManager.getConnection(jdbcUrl, jdbcUser, jdbcPassword);
    }
  
    public String getJdbcUrl() {
      return jdbcUrl;
    }
  
    public String getJdbcUser() {
      return jdbcUser;
    }
  }
  