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#!/usr/bin/python
"""
func
Copyright 2007, Red Hat, Inc
see AUTHORS
This software may be freely redistributed under the terms of the GNU
general public license.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
"""
import SimpleXMLRPCServer
import os
import subprocess
import socket
SERVE_ON = (None,None)
# FIXME: logrotate
from codes import *
import config_data
import logger
import module_loader
import utils
#from busrpc.services import RPCDispatcher
#from busrpc.config import DeploymentConfig
from rhpl.translate import _, N_, textdomain, utf8
I18N_DOMAIN = "vf_server"
class XmlRpcInterface(object):
def __init__(self, modules={}):
"""
Constructor sets up SQLAlchemy (database ORM) and logging.
"""
config_obj = config_data.Config()
self.config = config_obj.get()
self.tables = {}
self.tokens = []
self.modules = modules
self.logger = logger.Logger().logger
self.__setup_handlers()
def __setup_handlers(self):
"""
Add RPC functions from each class to the global list so they can be called.
FIXME: eventually calling most functions should go from here through getattr.
"""
self.handlers = {}
for x in self.modules.keys():
try:
self.modules[x].register_rpc(self.handlers)
self.logger.debug("adding %s" % x)
except AttributeError, e:
self.logger.warning("module %s could not be loaded, it did not have a register_rpc method" % modules[x])
# FIXME: find some more elegant way to surface the handlers?
# FIXME: aforementioned login/session token requirement
def get_dispatch_method(self, method):
if method in self.handlers:
return FuncApiMethod(self.logger, method,
self.handlers[method])
else:
self.logger.info("Unhandled method call for method: %s " % method)
raise InvalidMethodException
def _dispatch(self, method, params):
"""
the SimpleXMLRPCServer class will call _dispatch if it doesn't
find a handler method
"""
return self.get_dispatch_method(method)(*params)
class BusRpcWrapper:
def __init__(self, config):
self.rpc_interface = None
def __getattr__(self, name):
if self.rpc_interface == None:
self.rpc_interface = XmlRpcInterface()
return self.rpc_interface.get_dispatch_method(name)
def __repr__(self):
return ("<BusRpcWrapper>")
class FuncApiMethod:
def __init__(self, logger, name, method):
self.logger = logger
self.__method = method
self.__name = name
def __log_exc(self):
"""
Log an exception.
"""
(t, v, tb) = sys.exc_info()
self.logger.info("Exception occured: %s" % t )
self.logger.info("Exception value: %s" % v)
self.logger.info("Exception Info:\n%s" % string.join(traceback.format_list(traceback.extract_tb(tb))))
def __call__(self, *args):
self.logger.debug("(X) -------------------------------------------")
try:
rc = self.__method(*args)
except FuncException, e:
self.__log_exc()
rc = e
except:
self.logger.debug("Not a virt-factory specific exception")
self.__log_exc()
raise
rc = rc.to_datastruct()
self.logger.debug("Return code for %s: %s" % (self.__name, rc))
return rc
def serve(websvc):
"""
Code for starting the XMLRPC service.
FIXME: make this HTTPS (see RRS code) and make accompanying Rails changes..
"""
server =FuncXMLRPCServer(('', 51234))
server.register_instance(websvc)
server.serve_forever()
def serve_qpid(config_path, register_with_bridge=False, is_bridge_server=False):
"""
Code for starting the QPID RPC service.
"""
config = DeploymentConfig(config_path)
dispatcher = RPCDispatcher(config, register_with_bridge, is_bridge_server=is_bridge_server)
try:
dispatcher.start()
except KeyboardInterrupt:
dispatcher.stop()
print "Exiting..."
class FuncXMLRPCServer(SimpleXMLRPCServer.SimpleXMLRPCServer):
def __init__(self, args):
self.allow_reuse_address = True
SimpleXMLRPCServer.SimpleXMLRPCServer.__init__(self, args)
def main(argv):
"""
Start things up.
"""
for arg in sys.argv:
if arg == "import" or arg == "--import":
prov_obj = provisioning.Provisioning()
prov_obj.init(None, {})
return
elif arg == "sync" or arg == "--sync":
prov_obj = provisioning.Provisioning()
prov_obj.sync(None, {}) # just for testing
return
modules = module_loader.load_modules()
print "modules", modules
websvc = XmlRpcInterface(modules=modules)
if "qpid" in sys.argv or "--qpid" in sys.argv:
if "daemon" in sys.argv or "--daemon" in sys.argv:
utils.daemonize("/var/run/vf_server_qpid.pid")
else:
print "serving...\n"
serve_qpid("/etc/virt-factory/qpid.conf")
else:
if "daemon" in sys.argv or "--daemon" in sys.argv:
utils.daemonize("/var/run/vf_server.pid")
else:
print "serving...\n"
# daemonize only if --daemonize, because I forget to type "debug" -- MPD
serve(websvc)
# FIXME: upgrades? database upgrade logic would be nice to have here, as would general creation (?)
# FIXME: command line way to add a distro would be nice to have in the future, rsync import is a bit heavy handed.
# (and might not be enough for RHEL, but is good for Fedora/Centos)
if __name__ == "__main__":
textdomain(I18N_DOMAIN)
main(sys.argv)
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