AuthorizationManager类

AuthorizationManager类用于初始化AuthorizationHandler， 并对其进行管理。
起初始化源代码如下：

 public synchronized void initialize() throws ClassNotFoundException, IllegalAccessException, InstantiationException {
        LOG.trace("Begin authorization manager initialization");
        String handler = SqoopConfiguration.getInstance().getContext().getString("org.apache.sqoop.security.authorization.handler", "org.apache.sqoop.security.authorization.DefaultAuthorizationHandler").trim();
        authorizationHandler = SecurityFactory.getAuthorizationHandler(handler);
        String provider = SqoopConfiguration.getInstance().getContext().getString("org.apache.sqoop.security.authorization.authentication_provider", "org.apache.sqoop.security.authorization.DefaultAuthenticationProvider").trim();
        String serverName = SqoopConfiguration.getInstance().getContext().getString("org.apache.sqoop.security.authorization.server_name", "SqoopServer1").trim();
        authorizationHandler.doInitialize(SecurityFactory.getAuthenticationProvider(provider), serverName);
        LOG.info("Authorization loaded.");
    }

authorizationHandler类

authorizationHandler类用于完成授权的过程。
授权系统决定了用户可以执行什么操作，一旦他们完成授权。
系统提供了默认的DefaultAuthorizationHandler， 以及DefaultAuthenticationProvider类来负责授权的过程。