class Loader(object):
def __init__(self, libvirt_uri, maas_oauth, maas_url, *args, **kwargs):
self.driver = Driver(uri=libvirt_uri, *args, **kwargs)
self.maas = MaaS(maas_oauth, maas_url, *args, **kwargs)
def _register_on_maas(self, instance, **details):
for mac in instance.macs:
self.maas.new_node(details['prefix'],
mac,
**details)
def _run_callback(self, name, *args, **kwargs):
callback = self.callbacks.get(name, None)
if callback and isinstance(callback, collections.Callable):
return callback(*args, **kwargs)
def get_instances(self, instances, details, **callbacks):
self.callbacks = callbacks
loaded_instances = []
for i in xrange(0, instances):
logger.debug("Starting instance %d of %d" % (i, instances))
try:
if 'prefix' in details:
details['name'] = '%s%d' % (details['prefix'], i)
else:
details['name'] = 'new_machine_%d' % i
instance = self.driver.create(**details)
logger.debug("Created new instance %d, details: %s"
% (i, instance))
self._run_callback('on_new_instance', self.driver,
instance)
self._register_on_maas(instance, **details)
loaded_instances.append(instance)
except Exception as ex:
logger.error("Error starting new instance %d, error: %s" %
(i, ex.message))
self._run_callback('on_failure', self.driver, ex)
self._run_callback('on_load_ready', loaded_instances)
return loaded_instances
def __init__(self, libvirt_uri, maas_oauth, maas_url, *args, **kwargs):
self.driver = Driver(uri=libvirt_uri, *args, **kwargs)
self.maas = MaaS(maas_oauth, maas_url, *args, **kwargs)