Pass Object class to server method using Message Pack RPC - rpc

Question

I want to make a call from a client to a method in the server and I want to pass to the method an argument that is a class written by me. How can I do this using MsgPack RPC.
I know how to pass an int a vector or a string.

Answer 1

You can add to_msgpack attribute to your call and define a encoder for it.
This will let you send an object to server. server will receive it as dictionary.
if you want you can convert it to object.
personally I would like msgpack-rpc to let you specify object_hook also in class say form_msgpack. just to show I have used mgpack in get_object.
Server Code:
#MSgpackRpcServer.py
import msgpackrpc
import msgpack
def encode_foo(obj):
if isinstance(obj,Foo):
return {'Foo':True,'id':obj.id,'name':obj.name,'email':obj.email}
def decode_foo(obj):
if 'Foo' in obj:
return Foo(obj['id'],obj['name'],obj['email'])
def get_object(inobj):
return msgpack.unpackb(msgpack.packb(inobj),object_hook=decode_foo)
class Foo(object):
to_msgpack=encode_foo
def __init__(self,a,b,c):
self.id=a
self.name=b
self.email= c
def something(self):
return self.id*100
class SomeService(object):
def TestRPC(self,a):
print a # prints dictionary
setobject = get_object(a)
print setobject # prints object instance
return setobject.id +10 # do some thing
if __name__ == '__main__':
server = msgpackrpc.Server(SomeService())
server.listen(msgpackrpc.Address("localhost", 8001))
server.start()
Client Code:
from MSgpackRpcServer import Foo
import msgpackrpc
c = msgpackrpc.Client(msgpackrpc.Address('127.0.0.1',8001))
foo= Foo(11,'Hello','hello#hello')
print c.call('TestRPC',foo)