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#
# rteval_xmlrpc.wsgi
# XML-RPC handler for the rteval server, using mod_wsgi
#
# Copyright 2011 David Sommerseth <davids@redhat.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# For the avoidance of doubt the "preferred form" of this code is one which
# is in an open unpatent encumbered format. Where cryptographic key signing
# forms part of the process of creating an executable the information
# including keys needed to generate an equivalently functional executable
# are deemed to be part of the source code.
#
from wsgiref.simple_server import make_server
import types
from xmlrpclib import dumps, loads, Fault
from xmlrpc_API1 import XMLRPC_API1
from rteval.rtevalConfig import rtevalConfig
def rtevalXMLRPC_Dispatch(method, args):
# Default configuration
defcfg = {'xmlrpc_server': { 'datadir': './var/lib/rteval',
'db_server': 'localhost',
'db_port': 5432,
'database': 'rteval',
'db_username': 'rtevxmlrpc',
'db_password': 'rtevaldb'
}
}
# Fetch configuration
cfg = rtevalConfig(defcfg)
cfg.Load(append=True)
# Prepare an object for executing the query
xmlrpc = XMLRPC_API1(config=cfg.GetSection('xmlrpc_server'))
# Exectute it
result = xmlrpc.Dispatch(method, args)
# Send the result
if type(result) == types.TupleType:
return dumps(result, None, methodresponse=1)
else:
return dumps((result,), None, methodresponse=1)
def rtevalXMLRPC_handler(environ, start_response):
# the environment variable CONTENT_LENGTH may be empty or missing
try:
request_body_size = int(environ.get('CONTENT_LENGTH', 0))
except (ValueError):
request_body_size = 0
# When the method is POST the query string will be sent
# in the HTTP request body which is passed by the WSGI server
# in the file like wsgi.input environment variable.
try:
if (environ['REQUEST_METHOD'] != 'POST') or (request_body_size < 1):
raise Exception('Error in request')
request_body = environ['wsgi.input'].read(request_body_size)
try:
args, method = loads(request_body)
except:
raise Exception('Invalid XML-RPC request')
# Execute the XML-RPC call
status = '200 OK'
cont_type = 'text/xml'
response = [rtevalXMLRPC_Dispatch(method, args)]
except Exception, ex:
status = '500 Internal server error: %s' % str(ex)
cont_type = 'text/plain'
response = [
'500 Internal server error\n',
'ERROR: %s' % str(ex)
]
import traceback, sys
traceback.print_exc(file=sys.stderr)
response_headers = [('Content-Type', cont_type),
('Content-Length', str(len("".join(response))))]
start_response(status, response_headers)
return response
if __name__ == '__main__':
#
# Simple stand-alone XML-RPC server, if started manually
# Not suitable for production environments, but for testing
#
httpd = make_server('localhost', 65432, rtevalXMLRPC_handler)
try:
httpd.serve_forever()
except KeyboardInterrupt:
print "\nShutting down"
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