通过HSFabric的KeyTab认证实现查询HetuEngine SQL任务

适用场景

• 支持客户端跨网段访问。
• 只需要确保业务侧和HetuEngine服务端HSFabric所在业务节点网络互通，且对外开放HSFabric固定的IP和端口。
• 适用于双平面的网络场景。

功能简介

通过KeyTab文件认证方式连接到HetuEngine，组装对应的SQL发送到HetuEngine执行，完成对Hive数据源的增删改查操作。

public class JDBCExampleZk {
    private static Properties properties = new Properties();
    private final static String PATH_TO_JAAS_ZK_CONF = JDBCExample.class.getClassLoader()
            .getResource("jaas-zk.conf")
            .getPath();
    private final static String PATH_TO_KRB5_CONF = JDBCExample.class.getClassLoader()
            .getResource("krb5.conf")
            .getPath();
    private final static String PATH_TO_USER_KEYTAB = JDBCExample.class.getClassLoader()
            .getResource("user.keytab")
            .getPath();
    private final static String PATH_TO_HETUSERVER_JKS = JDBCExamplePasswordZK.class.getClassLoader()
            .getResource("hetuserver.jks")
            .getPath();
    private static void init() throws ClassNotFoundException {
        System.setProperty("user.timezone", "UTC");
        System.setProperty("java.security.auth.login.config", PATH_TO_JAAS_ZK_CONF);
        System.setProperty("java.security.krb5.conf", PATH_TO_KRB5_CONF);
        properties.setProperty("user", "hivetest");
        properties.setProperty("SSL", "true");
        properties.setProperty("KerberosConfigPath", PATH_TO_KRB5_CONF);
        properties.setProperty("KerberosPrincipal", "hivetest");
        properties.setProperty("KerberosKeytabPath", PATH_TO_USER_KEYTAB);
        properties.setProperty("SSLTrustStorePath", PATH_TO_HETUSERVER_JKS);
        properties.setProperty("KerberosRemoteServiceName", "HTTP");
        properties.setProperty("tenant", "default");
        properties.setProperty("deploymentMode", "on_yarn");
        properties.setProperty("ZooKeeperAuthType", "kerberos");
        properties.setProperty("ZooKeeperSaslClientConfig", "Client");
        Class.forName("io.XXXsql.jdbc.XXXDriver");
    }
    /**
     * Program entry
     *
     * @param args no need program parameter
     */
    public static void main(String[] args) {
        Connection connection = null;
        ResultSet result = null;
        PreparedStatement statement = null;
        String url = "jdbc:XXX://192.168.1.130:2181,192.168.1.131:2181,192.168.1.132:2181/hive/default?"
            + "serviceDiscoveryMode=zooKeeper&zooKeeperNamespace=hsbroker";
        try {
            init();
            String sql = "show tables";
            connection = DriverManager.getConnection(url, properties);
            statement = connection.prepareStatement(sql.trim());
            result = statement.executeQuery();
            ResultSetMetaData resultMetaData = result.getMetaData();
            Integer colNum = resultMetaData.getColumnCount();
            for (int j = 1; j <= colNum; j++) {
                System.out.print(resultMetaData.getColumnLabel(j) + "\t");
            }
            System.out.println();
            while (result.next()) {
                for (int j = 1; j <= colNum; j++) {
                    System.out.print(result.getString(j) + "\t");
                }
                System.out.println();
            }
        } catch (SQLException | ClassNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (result != null) {
                try {
                    result.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
            if (statement != null) {
                try {
                    statement.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

上述代码中各参数说明如表1所示：