Python JSON-RPC Client Server Library With Additional Support for BaseHTTPServer, CherryPy And CGI

Python 3.x

This library is only for Python 2.x. You can not use it with Python 3.x. But I am learning Python 3.x now. Maybe it could be for Python 3.x in the future.

Installation

pip install python-jsonrpc

HTTP Client Example

#!/usr/bin/env python
# coding: utf-8

import pyjsonrpc

http_client = pyjsonrpc.HttpClient(
    url = "http://example.com/jsonrpc",
    username = "Username",
    password = "Password"
)
print http_client.call("add", 1, 2)
# Result: 3

# It is also possible to use the *method* name as *attribute* name.
print http_client.add(1, 2)
# Result: 3

# Notifications send messages to the server, without response.
http_client.notify("add", 3, 4)

HTTP Server Example

#!/usr/bin/env python
# coding: utf-8

import pyjsonrpc


class RequestHandler(pyjsonrpc.HttpRequestHandler):

    @pyjsonrpc.rpcmethod
    def add(self, a, b):
        """Test method"""
        return a + b


# Threading HTTP-Server
http_server = pyjsonrpc.ThreadingHttpServer(
    server_address = ('localhost', 8080),
    RequestHandlerClass = RequestHandler
)
print "Starting HTTP server ..."
print "URL: http://localhost:8080"
http_server.serve_forever()

CGI Example

#!/usr/bin/env python
# coding: utf-8

import pyjsonrpc

def add(a, b):
    """Test function"""
    return a + b

# Handles the JSON-RPC request and gets back the result to STDOUT
pyjsonrpc.handle_cgi_request(methods = dict(add = add))

Library Usage Example

#!/usr/bin/env python
# coding: utf-8

import pyjsonrpc


class JsonRpc(pyjsonrpc.JsonRpc):

    @pyjsonrpc.rpcmethod
    def add(self, a, b):
        """Test method"""
        return a + b


# 1. Initialize JSON-RPC class
rpc = JsonRpc()

# 2. Create JSON-RPC string with parameters (= request string)
request_json = pyjsonrpc.create_request_json("add", 1, 2)
# request_json = '{"method": "add", "params": [1, 2], "id": "...", "jsonrpc": "2.0"}'

# 3. Call the JSON-RPC function and get back the JSON-RPC result (= response string)
response_json = rpc.call(request_json)
# response_json = '{"result": 3, "id": "...", "jsonrpc": "2.0"}'

# 4. Convert JSON-RPC string to Python objects
response = pyjsonrpc.parse_response_json(response_json)

# 5. Print result or error
if response.error:
    print "Error:", response.error.code, response.error.message
else:
    print "Result:", response.result

CherryPy Example

#!/usr/bin/env python
# coding: utf-8

import cherrypy
from pyjsonrpc.cp import CherryPyJsonRpc, rpcmethod


class Root(CherryPyJsonRpc):

    @rpcmethod
    def add(self, a, b):
        """Test method"""
        return a + b

    index = CherryPyJsonRpc.request_handler


print "Starting HTTP server ..."
print "URL: http://localhost:8080"
cherrypy.quickstart(Root())

Licenses

• GNU Library or Lesser General Public License (LGPL)
• MIT License