def build_request_spec(ctxt, image, instances, instance_type=None):
"""Build a request_spec for the scheduler.
The request_spec assumes that all instances to be scheduled are the same
type.
"""
instance = instances[0]
if isinstance(instance, instance_obj.Instance):
instance = obj_base.obj_to_primitive(instance)
if instance_type is None:
instance_type = flavors.extract_flavor(instance)
# NOTE(comstud): This is a bit ugly, but will get cleaned up when
# we're passing an InstanceType internal object.
extra_specs = db.flavor_extra_specs_get(ctxt, instance_type['flavorid'])
instance_type['extra_specs'] = extra_specs
request_spec = {
'image': image or {},
'instance_properties': instance,
'instance_type': instance_type,
'num_instances': len(instances),
# NOTE(alaski): This should be removed as logic moves from the
# scheduler to conductor. Provides backwards compatibility now.
'instance_uuids': [inst['uuid'] for inst in instances]}
return jsonutils.to_primitive(request_spec)
def service_get_all_by_host(context, host):
session = get_session()
service_refs = service_model_query(context, models.Service,
session=session,
read_deleted="no").\
filter_by(host=host).\
all()
return jsonutils.to_primitive(service_refs)
def service_get_all(context, disabled=None):
session = get_session()
query = service_model_query(context, models.Service, session=session)
if disabled is not None:
query = query.filter_by(disabled=disabled)
service_refs = query.all()
return jsonutils.to_primitive(service_refs)
def service_get_all_by_host(context, host):
session = get_session()
service_refs = service_model_query(context, models.Service,
session=session,
read_deleted="no").\
filter_by(host=host).\
all()
return jsonutils.to_primitive(service_refs)
def service_get_all_by_topic(context, topic):
session = get_session()
service_refs = service_model_query(context, models.Service,
session=session,
read_deleted="no").\
filter_by(disabled=False).\
filter_by(topic=topic).\
all()
return jsonutils.to_primitive(service_refs)
def select_destinations(self, context, request_spec, filter_properties):
"""Returns destinations(s) best suited for this request_spec and
filter_properties.
The result should be a list of dicts with 'host', 'nodename' and
'limits' as keys.
"""
dests = self.driver.select_destinations(context, request_spec,
filter_properties)
return jsonutils.to_primitive(dests)
def service_get_all(context, disabled=None):
session = get_session()
query = service_model_query(context, models.Service,
session=session)
if disabled is not None:
query = query.filter_by(disabled=disabled)
service_refs = query.all()
return jsonutils.to_primitive(service_refs)
def service_get_all_by_topic(context, topic):
session = get_session()
service_refs = service_model_query(context, models.Service,
session=session,
read_deleted="no").\
filter_by(disabled=False).\
filter_by(topic=topic).\
all()
return jsonutils.to_primitive(service_refs)
def service_get(context, service_id):
session = get_session()
service_ref = service_model_query(context, models.Service,
session=session).\
filter_by(id=service_id).\
first()
if not service_ref:
raise exception.ServiceNotFound(service_id=service_id)
return jsonutils.to_primitive(service_ref)
def service_get_by_host_and_topic(context, host, topic):
session = get_session()
service_ref = service_model_query(context, models.Service,
session=session,
read_deleted="no").\
filter_by(disabled=False).\
filter_by(host=host).\
filter_by(topic=topic).\
first()
return jsonutils.to_primitive(service_ref)
def service_get_by_host_and_topic(context, host, topic):
session = get_session()
service_ref = service_model_query(context, models.Service,
session=session,
read_deleted="no").\
filter_by(disabled=False).\
filter_by(host=host).\
filter_by(topic=topic).\
first()
return jsonutils.to_primitive(service_ref)
def service_get(context, service_id):
session = get_session()
service_ref = service_model_query(context, models.Service,
session=session).\
filter_by(id=service_id).\
first()
if not service_ref:
raise exception.ServiceNotFound(service_id=service_id)
return jsonutils.to_primitive(service_ref)
def service_get_by_args(context, host, binary):
session = get_session()
service_ref = service_model_query(context, models.Service,
session=session).\
filter_by(host=host).\
filter_by(binary=binary).\
first()
if not service_ref:
raise exception.HostBinaryNotFound(host=host, binary=binary)
return jsonutils.to_primitive(service_ref)
def service_get_by_args(context, host, binary):
session = get_session()
service_ref = service_model_query(context, models.Service,
session=session).\
filter_by(host=host).\
filter_by(binary=binary).\
first()
if not service_ref:
raise exception.HostBinaryNotFound(host=host, binary=binary)
return jsonutils.to_primitive(service_ref)
def service_update(context, service_id, values):
session = get_session()
with session.begin():
service_ref = service_model_query(context, models.Service,
session=session).\
filter_by(id=service_id).\
first()
if not service_ref:
raise exception.ServiceNotFound(service_id=service_id)
service_ref.update(values)
return jsonutils.to_primitive(service_ref)
def service_update(context, service_id, values):
session = get_session()
with session.begin():
service_ref = service_model_query(context, models.Service,
session=session).\
filter_by(id=service_id).\
first()
if not service_ref:
raise exception.ServiceNotFound(service_id=service_id)
service_ref.update(values)
return jsonutils.to_primitive(service_ref)
def service_create(context, values):
session = get_session()
service_ref = models.Service()
service_ref.update(values)
if not CONF.enable_new_services:
service_ref.disabled = True
try:
service_ref.save(session)
except db_exc.DBDuplicateEntry as e:
if 'binary' in e.columns:
raise exception.ServiceBinaryExists(host=values.get('host'),
binary=values.get('binary'))
raise exception.ServiceTopicExists(host=values.get('host'),
topic=values.get('topic'))
return jsonutils.to_primitive(service_ref)
def service_create(context, values):
session = get_session()
service_ref = models.Service()
service_ref.update(values)
if not CONF.enable_new_services:
service_ref.disabled = True
try:
service_ref.save(session)
except db_exc.DBDuplicateEntry as e:
if 'binary' in e.columns:
raise exception.ServiceBinaryExists(host=values.get('host'),
binary=values.get('binary'))
raise exception.ServiceTopicExists(host=values.get('host'),
topic=values.get('topic'))
return jsonutils.to_primitive(service_ref)
def ping(self, context, arg):
resp = {'service': self.service_name, 'arg': arg}
return jsonutils.to_primitive(resp)
def ping(self, context, arg, timeout=None):
arg_p = jsonutils.to_primitive(arg)
cctxt = self.client.prepare(timeout=timeout)
return cctxt.call(context, 'ping', arg=arg_p)
def serialize_entity(context, entity):
return jsonutils.to_primitive(entity, convert_instances=True)
