from urlparse import urlparse
from sfa.util.sfalogging import logger
try:
+ from nova import db
+ from nova import flags
+ from nova import context
from nova.auth.manager import AuthManager
from nova.compute.manager import ComputeManager
from nova.network.manager import NetworkManager
from nova.scheduler.manager import SchedulerManager
+ from nova.image.glance import GlanceImageService
has_nova = True
except:
has_nova = False
-
+
+
+class InjectContext:
+ """
+ Wraps the module and injects the context when executing methods
+ """
+ def __init__(self, proxy, context):
+ self.proxy = proxy
+ self.context = context
+
+ def __getattr__(self, name):
+ def func(*args, **kwds):
+ result=getattr(self.proxy, name)(self.context, *args, **kwds)
+ return result
+ return func
+
class NovaShell:
"""
- A simple xmlrpc shell to a myplc instance
- This class can receive all Openstack calls to the underlying testbed
+ A simple native shell to a nova backend.
+ This class can receive all nova calls to the underlying testbed
"""
# dont care about limiting calls yet
# use the 'capability' auth mechanism for higher performance when the PLC db is local
def __init__ ( self, config ) :
- url = config.SFA_PLC_URL
- # try to figure if the url is local
- hostname=urlparse(url).hostname
- if hostname == 'localhost': is_local=True
- # otherwise compare IP addresses;
- # this might fail for any number of reasons, so let's harden that
- try:
- # xxx todo this seems to result in a DNS request for each incoming request to the AM
- # should be cached or improved
- url_ip=socket.gethostbyname(hostname)
- local_ip=socket.gethostbyname(socket.gethostname())
- if url_ip==local_ip: is_local=True
- except:
- pass
-
+ self.auth_manager = None
+ self.compute_manager = None
+ self.network_manager = None
+ self.scheduler_manager = None
+ self.db = None
+ self.image_manager = None
- if is_local and has_nova:
+ if has_nova:
logger.debug('nova access - native')
# load the config
flags.FLAGS(['foo', '--flagfile=/etc/nova/nova.conf', 'foo', 'foo'])
- self.auth = context.get_admin_context()
- self.proxy = db
+ # instantiate managers
+ self.auth_manager = AuthManager()
+ self.compute_manager = ComputeManager()
+ self.network_manager = NetworkManager()
+ self.scheduler_manager = SchedulerManager()
+ self.db = InjectContext(db, context.get_admin_context())
+ self.image_manager = InjectContext(GlanceImageService(), context.get_admin_context())
else:
- self.auth = None
- self.proxy = None
logger.debug('nova access - REST')
raise SfaNotImplemented('nova access - Rest')
-
- def __getattr__(self, name):
- def func(*args, **kwds):
- result=getattr(self.proxy, name)(self.auth, *args, **kwds)
- return result
- return func