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 static org.openqa.selenium.grid.config.StandardGridRoles.SESSION_MAP_ROLE;
  
  import com.beust.jcommander.Parameter;
  import com.google.auto.service.AutoService;
  import java.util.Collections;
  import java.util.Set;
  import org.openqa.selenium.grid.config.ConfigValue;
  import org.openqa.selenium.grid.config.HasRoles;
  import org.openqa.selenium.grid.config.Role;
  
  @AutoService(HasRoles.class)
  public class JdbcSessionMapFlags implements HasRoles {
  
    @Parameter(names = "--jdbc-url", description = "Database URL for making a connection.")
    @ConfigValue(
        section = "sessions",
        name = "jdbc-url",
        example = "\"jdbc:mysql://localhost:3306/TestDatabase\"")
    private String jdbcUrl;
  
    @Parameter(names = "--jdbc-user", description = "Username for the user to make a JDBC connection")
    @ConfigValue(section = "sessions", name = "jdbc-user", example = "myTestUser")
    private String username;
  
    @Parameter(
        names = "--jdbc-password",
        description = "Password for the user to make a JDBC connection")
    @ConfigValue(section = "sessions", name = "jdbc-password", example = "hunter2")
    private String password;
  
    @Override
    public Set<Role> getRoles() {
      return Collections.singleton(SESSION_MAP_ROLE);
    }
  }
  