程序包 com.mysql.cj.protocol

接口 AuthenticationPlugin<M extends Message>

    • 方法概要

      所有方法 实例方法 抽象方法 默认方法 
      修饰符和类型 方法 说明
      default void destroy()
      Called by the driver when this extension should release any resources it is holding and cleanup internally before the connection is closed.
      String getProtocolPluginName()
      Returns the name that the MySQL server uses on the wire for this plugin
      default void init​(Protocol<M> protocol)
      We need direct Protocol reference because it isn't available from Connection before authentication complete.
      boolean isReusable()  
      boolean nextAuthenticationStep​(M fromServer, List<M> toServer)
      Process authentication handshake data from server and optionally produce data to be sent back to the server.
      boolean requiresConfidentiality()
      Does this plugin require the connection itself to be confidential (i.e. tls/ssl)...Highly recommended to return "true" for plugins that return the credentials in the clear.
      default void reset()
      Resets the authentication steps sequence.
      void setAuthenticationParameters​(String user, String password)
      This method called from cJ before first nextAuthenticationStep call.

    • 方法详细资料

      • init

        default void init​(Protocol<M> protocol)
        We need direct Protocol reference because it isn't available from Connection before authentication complete.
        参数:
        protocol - protocol instance

      • reset

        default void reset()
        Resets the authentication steps sequence.

      • destroy

        default void destroy()
        Called by the driver when this extension should release any resources it is holding and cleanup internally before the connection is closed.

      • getProtocolPluginName

        String getProtocolPluginName()
        Returns the name that the MySQL server uses on the wire for this plugin
        返回:
        plugin name

      • requiresConfidentiality

        boolean requiresConfidentiality()
        Does this plugin require the connection itself to be confidential (i.e. tls/ssl)...Highly recommended to return "true" for plugins that return the credentials in the clear.
        返回:
        true if secure connection is required

      • isReusable

        boolean isReusable()
        返回:
        true if plugin instance may be reused, false otherwise

      • setAuthenticationParameters

        void setAuthenticationParameters​(String user,
                                 String password)
        This method called from cJ before first nextAuthenticationStep call. Values of user and password parameters are passed from those in MysqlIO.changeUser(String userName, String password, String database) or MysqlIO.doHandshake(String user, String password, String database). Plugin should use these values instead of values from connection properties because parent method may be a changeUser call which saves user and password into connection only after successful handshake.
        参数:
        user - user name
        password - user password

      • nextAuthenticationStep

        boolean nextAuthenticationStep​(M fromServer,
                               List<M> toServer)
        Process authentication handshake data from server and optionally produce data to be sent back to the server. The driver will keep calling this method until either an Exception is thrown (authentication failure, please use appropriate SQLStates) or the method returns false or driver receives an OK packet from the server which indicates that the connection has been already approved. If, on return from this method, toServer is a non-empty list of buffers, then these buffers should be sent to the server in order and without any reads in between them. If toServer is an empty list, no data should be sent to server. If method returns true, it means that this plugin does not need any more data from the server to conclude the handshake and this method should not be called again. (Note that server can send an Auth Method Switch request and then another handshake will start, possibly using a different plugin.) If this method returns false, it means that plugin needs more data from the server to conclude the handshake. In that case next handshake data payload should be read from the server (after possibly writing data from toServer as explained above). Then this method should be called again with the new data in fromServer parameter. In case of errors the method should throw Exception.
        参数:
        fromServer - a buffer containing handshake data payload from server (can be empty).
        toServer - list of buffers with data to be sent to the server (the list can be empty, but buffers in the list should contain data).
        返回:
        False if more data should be read from the server and next call to this method made, true otherwise.