191 lines
6.9 KiB
Python
191 lines
6.9 KiB
Python
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"""
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Copyright 2011 Jeff Garzik
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AuthServiceProxy has the following improvements over python-jsonrpc's
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ServiceProxy class:
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- HTTP connections persist for the life of the AuthServiceProxy object
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(if server supports HTTP/1.1)
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- sends protocol 'version', per JSON-RPC 1.1
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- sends proper, incrementing 'id'
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- sends Basic HTTP authentication headers
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- parses all JSON numbers that look like floats as Decimal
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- uses standard Python json lib
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Previous copyright, from python-jsonrpc/jsonrpc/proxy.py:
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Copyright (c) 2007 Jan-Klaas Kollhof
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This file is part of jsonrpc.
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jsonrpc is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This software is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this software; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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try:
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import http.client as httplib
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except ImportError:
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import http.client
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import base64
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import decimal
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import json
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import logging
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try:
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import urllib.parse as urlparse
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except ImportError:
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import urllib.parse
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USER_AGENT = "AuthServiceProxy/0.1"
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HTTP_TIMEOUT = 30
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log = logging.getLogger("BitcoinRPC")
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class JSONRPCException(Exception):
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def __init__(self, rpc_error):
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parent_args = []
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try:
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parent_args.append(rpc_error['message'])
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except:
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pass
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Exception.__init__(self, *parent_args)
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self.error = rpc_error
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self.code = rpc_error['code'] if 'code' in rpc_error else None
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self.message = rpc_error['message'] if 'message' in rpc_error else None
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def __str__(self):
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return '%d: %s' % (self.code, self.message)
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def __repr__(self):
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return '<%s \'%s\'>' % (self.__class__.__name__, self)
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def EncodeDecimal(o):
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if isinstance(o, decimal.Decimal):
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return float(round(o, 8))
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raise TypeError(repr(o) + " is not JSON serializable")
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class AuthServiceProxy(object):
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__id_count = 0
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def __init__(self, service_url, service_name=None, timeout=HTTP_TIMEOUT, connection=None):
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self.__service_url = service_url
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self.__service_name = service_name
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self.__url = urllib.parse.urlparse(service_url)
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if self.__url.port is None:
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port = 80
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else:
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port = self.__url.port
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(user, passwd) = (self.__url.username, self.__url.password)
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try:
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user = user.encode('utf8')
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except AttributeError:
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pass
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try:
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passwd = passwd.encode('utf8')
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except AttributeError:
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pass
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authpair = user + b':' + passwd
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self.__auth_header = b'Basic ' + base64.b64encode(authpair)
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self.__timeout = timeout
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if connection:
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# Callables re-use the connection of the original proxy
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self.__conn = connection
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elif self.__url.scheme == 'https':
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self.__conn = http.client.HTTPSConnection(self.__url.hostname, port,
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timeout=timeout)
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else:
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self.__conn = http.client.HTTPConnection(self.__url.hostname, port,
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timeout=timeout)
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def __getattr__(self, name):
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if name.startswith('__') and name.endswith('__'):
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# Python internal stuff
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raise AttributeError
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if self.__service_name is not None:
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name = "%s.%s" % (self.__service_name, name)
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return AuthServiceProxy(self.__service_url, name, self.__timeout, self.__conn)
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def __call__(self, *args):
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AuthServiceProxy.__id_count += 1
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log.debug("-%s-> %s %s"%(AuthServiceProxy.__id_count, self.__service_name,
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json.dumps(args, default=EncodeDecimal)))
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postdata = json.dumps({'version': '1.1',
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'method': self.__service_name,
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'params': args,
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'id': AuthServiceProxy.__id_count}, default=EncodeDecimal)
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self.__conn.request('POST', self.__url.path, postdata,
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{'Host': self.__url.hostname,
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'User-Agent': USER_AGENT,
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'Authorization': self.__auth_header,
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'Content-type': 'application/json'})
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self.__conn.sock.settimeout(self.__timeout)
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response = self._get_response()
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if response.get('error') is not None:
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raise JSONRPCException(response['error'])
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elif 'result' not in response:
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raise JSONRPCException({
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'code': -343, 'message': 'missing JSON-RPC result'})
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return response['result']
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def batch_(self, rpc_calls):
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"""Batch RPC call.
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Pass array of arrays: [ [ "method", params... ], ... ]
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Returns array of results.
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"""
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batch_data = []
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for rpc_call in rpc_calls:
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AuthServiceProxy.__id_count += 1
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m = rpc_call.pop(0)
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batch_data.append({"jsonrpc":"2.0", "method":m, "params":rpc_call, "id":AuthServiceProxy.__id_count})
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postdata = json.dumps(batch_data, default=EncodeDecimal)
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log.debug("--> "+postdata)
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self.__conn.request('POST', self.__url.path, postdata,
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{'Host': self.__url.hostname,
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'User-Agent': USER_AGENT,
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'Authorization': self.__auth_header,
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'Content-type': 'application/json'})
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results = []
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responses = self._get_response()
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for response in responses:
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if response['error'] is not None:
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raise JSONRPCException(response['error'])
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elif 'result' not in response:
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raise JSONRPCException({
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'code': -343, 'message': 'missing JSON-RPC result'})
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else:
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results.append(response['result'])
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return results
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def _get_response(self):
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http_response = self.__conn.getresponse()
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if http_response is None:
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raise JSONRPCException({
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'code': -342, 'message': 'missing HTTP response from server'})
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responsedata = http_response.read().decode('utf8')
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response = json.loads(responsedata, parse_float=decimal.Decimal)
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if "error" in response and response["error"] is None:
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log.debug("<-%s- %s"%(response["id"], json.dumps(response["result"], default=EncodeDecimal)))
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else:
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log.debug("<-- "+responsedata)
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return response
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