NAME

       UR::Service::RPC::Message - Serializable object appropriate for sending RPC messages

SYNOPSIS

         my $msg = UR::Service::RPC::Message->create(
                                  target_class => 'URT::RPC::Thingy',
                                  method_name  => 'join',
                                  params       => ['-', @join_args],
                                  'wantarray'  => 0,
                                );
         $msg->send($fh);

         my $resp = UR::Service::RPC::Message->recv($fh, 5);

DESCRIPTION

       This class is used as a message-passing interface by the RPC service modules.

PROPERTIES

       These properties should be filled in by the initiating caller

       method_name => Text
           The name of the subroutine the initiator whishes to call.

       target_class => Text
           The namespace the initiator wants the subroutine to be called in

       params => ARRAY
           List of parameters to pass to the subroutine

       wantarray => Boolean
           What wantarray() context the subroutine should be called in.

       These properties are assigned after the RPC call to the subroutine

       return_values => ARRAY
           List of values returned by the subroutine

       exception
           On the receiving side, the subroutine is called within an eval.  If there was an
           exception, "exception" stores the value of $@, or the empty string.  The receiving
           side should also fill-in "exception" if there was an authentication failure.

       fh  "recv" fills this in with the file handle the message was read from.

METHODS

       send
             $bytes = $msg->send($fh);

           Serializes the Message object with FreezeThaw and writes the data to the filehandle
           $fh.  Returns the number of bytes written.  $bytes will be false if there was an
           error.

       recv
             $response = UR::Service::RPC::Message->recv($fh,$timeout);

             $response = $msg->recv();

           Reads a serialized Message from the filehandle and constructs a Message object that is
           then returned to the caller.  In the first case, it reads from the given filehandle,
           waiting a maximum of $timeout seconds with select before giving up.  In the second
           case, it reads from whatever filehandle is stored in $msg to read data from.

SEE ALSO

       UR::Service::RPC::Server, UR::Service::RPC::Executor