Minimal python RPC implementation in a single file based on the JSON-RPC 2.0 specs from http://www.jsonrpc.org/specification.
Minimal python RPC implementation in a single file based on the JSON-RPC 2.0 specs.
jsonrpyc.RPC instances basically wrap an input stream and an output stream in order to communicate with other services. A service is not even forced to be written in Python as long as it strictly implements the JSON-RPC 2.0 specs. A suitable implementation for NodeJs is node-json-rpc. A jsonrpyc.RPC instance may wrap a target object. Incomming requests will be routed to methods of this object whose result might be sent back as a response. Example implementation:
import jsonrpyc class MyTarget(object): def greet(self, name): return "Hi, %s!" % name jsonrpc.RPC(MyTarget())
import jsonrpyc from subprocess import Popen, PIPE p = Popen(["python", "server.py"], stdin=PIPE, stdout=PIPE) rpc = jsonrpyc.RPC(stdout=p.stdin, stdin=p.stdout) def cb(err, res=None): if err: throw err print("callback got: " + res) rpc("greet", args=("John",), callback=cb) # cb is called asynchronously which prints # => "callback got: Hi, John!"
import jsonrpyc from subprocess import Popen, PIPE p = Popen(["python", "server.py"], stdin=PIPE, stdout=PIPE) rpc = jsonrpyc.RPC(stdout=p.stdin, stdin=p.stdout) print(rpc("greet", args=("John",), block=0.1)) # => "Hi, John!"
pip install jsonrpyc
or by simply copying the file into your project.
If you like to contribute to jsonrpyc, I’m happy to receive pull requests. Just make sure to add a new test cases and run them via:
> python -m unittest tests
The MIT License (MIT)
Copyright (c) 2016 Marcel R.
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