class ResourceModelRegistrar(object):
+ """
+ Global registry to keep track of all existing resource models.
+ """
def __init__(self, dc_emulation_max_cpu):
self.e_cpu = dc_emulation_max_cpu
LOG.info("Resource model registrar created with dc_emulation_max_cpu=%r" % dc_emulation_max_cpu)
def register(self, dc, rm):
+ """
+ Register a new resource model.
+ :param dc: Data center to which it is assigned.
+ :param rm: The resource model object.
+ :return: None
+ """
if dc in self._resource_models:
raise Exception("There is already an resource model assigned to this DC.")
self._resource_models[dc] = rm
rm.registrar = self
LOG.info("Registrar: Added resource model: %r" % rm)
- @property
- def num_models(self):
- return len(self._resource_models)
-
@property
def resource_models(self):
return list(self._resource_models.itervalues())
"""
def __init__(self):
- self._flavors=dict()
+ self._flavors = dict()
self._initDefaultFlavors()
self.registrar = None # pointer to registrar
+ self.allocated_compute_instances = dict()
LOG.info("Resource model %r initialized" % self)
def __repr__(self):
return self.__class__.__name__
def _initDefaultFlavors(self):
- # initialize some default flavours (inspired by OpenStack)
+ """
+ initialize some default flavours (naming/sizes inspired by OpenStack)
+ """
self.addFlavour(ResourceFlavor(
"tiny", {"compute": 1, "memory": 32, "disk": 1}))
self.addFlavour(ResourceFlavor(
:return: 3-tuple: (CPU-fraction, Mem-limit, Disk-limit)
"""
LOG.warning("Allocating in BaseResourceModel: %r with flavor: %r" % (name, flavor_name))
+ self.allocated_compute_instances[name] = flavor_name
return -1.0, -1.0, -1.0 # return invalid values to indicate that this RM is a dummy
def free(self, name):
:return: True/False
"""
LOG.warning("Free in BaseResourceModel: %r" % name)
+ del self.allocated_compute_instances[name]
return True