import gluon.contrib.simplejson as simplejson

import types

import sys

class JSONRPCServiceBase:

def __init__(self):

self.methods={}

def response(self, id, result):

return simplejson.dumps({'version': '1.1', 'id':id,

'result':result, 'error':None})

def error(self, id, code, message):

return simplejson.dumps({'id': id,

'version': '1.1',

'error': {'name': 'JSONRPCError',

'code': code,

'message': message

}

})

def add_method(self, name, method):

self.methods[name] = method

def process(self, data):

data = simplejson.loads(data)

id, method, params = data["id"], data["method"], data["params"]

if method in self.methods:

try:

result =self.methods[method](*params)

return self.response(id, result)

except BaseException:

etype, eval, etb = sys.exc_info()

return self.error(id, 100, '%s: %s' %(etype.__name__, eval))

except:

etype, eval, etb = sys.exc_info()

return self.error(id, 100, 'Exception %s: %s' %(etype, eval))

else:

return self.error(id, 100, 'method "%s" does not exist' % method)

def listmethods(self):

return self.methods.keys()