Source code for dragonfly.rpc.util

# This file is part of Dragonfly.
# (c) Copyright 2007, 2008 by Christo Butcher
# Licensed under the LGPL.
#   Dragonfly is free software: you can redistribute it and/or modify it
#   under the terms of the GNU Lesser General Public License as published
#   by the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#   Dragonfly is distributed in the hope that it will be useful, but
#   WITHOUT ANY WARRANTY; without even the implied warranty of
#   Lesser General Public License for more details.
#   You should have received a copy of the GNU Lesser General Public
#   License along with Dragonfly.  If not, see
#   <>.

RPC utility functions

import json
import requests

[docs]def send_rpc_request(url, method, params, id=0): """ Utility function to send a JSON-RPC request to a server. This will raise an error if the request fails with an error or if the server is unreachable. :param url: the URL to send the JSON-RPC request to. :param method: name of the RPC method to call. :param params: parameters of the RPC method to call. :param id: ID of the JSON-RPC request (default: 0). :type url: str :type method: str :type params: list :type id: int :returns: JSON-RPC response :rtype: dict :raises: RuntimeError """ headers = {'content-type': 'application/json'} payload = { "method": method, "params": params, "jsonrpc": "2.0", "id": id, } response = url, data=json.dumps(payload), headers=headers ).json() # Handle an error in the response. error_info = response.get("error") if error_info: raise RuntimeError( "error calling RPC server method %s: %d, %s" % (method, error_info["code"], error_info["message"]) ) # Otherwise return the response. return response