def create(self, context, device_id):
"""Create a driver-side ControlPathID for drivers. Call
ControlpathID object to store in DB."""
cpid_obj = ControlpathID(context=context,
device_id=device_id,
cpid_type=self.cpid_type,
cpid_info=self.cpid_info)
cpid_obj.create(context)
return cpid_obj
def get_device_obj_by_device_id(self, context, device_id):
"""Get device object by device id.
:param context: requested context.
:param host: hostname of the node.
:return: a device object of current driver device object. It will
return on value because it has controlpath_id.
"""
# get dev_obj_list from hostname
device_obj = Device.get_by_device_id(context, device_id)
# use controlpath_id.cpid_info to identiy one Device.
# get cpid_obj, could be empty or only one value.
ControlpathID.get_by_device_id_cpidinfo(context, device_obj.id,
self.controlpath_id.cpid_info)
# find the one cpid_obj with cpid_info
return device_obj
def get(cls, context, device_id):
# return None when can't found any.
cpid_obj = ControlpathID.get_by_device_id(context, device_id)
driver_cpid_obj = None
if cpid_obj is not None:
driver_cpid_obj = cls(context=context,
cpid_type=cpid_obj.cpid_type,
cpid_info=cpid_obj.cpid_info)
return driver_cpid_obj
def drv_device_make_diff(cls, context, host, old_driver_device_list,
new_driver_device_list):
"""Compare new driver-side device object list with the old one in
one host."""
LOG.info("Start differing devices.")
# TODO:The placement report will be implemented here.
# Use cpid.cpid_info to identify whether the device is the same.
new_cpid_list = [
driver_dev_obj.controlpath_id.cpid_info
for driver_dev_obj in new_driver_device_list
]
old_cpid_list = [
driver_dev_obj.controlpath_id.cpid_info
for driver_dev_obj in old_driver_device_list
]
same = set(new_cpid_list) & set(old_cpid_list)
added = set(new_cpid_list) - same
deleted = set(old_cpid_list) - same
for s in same:
# get the driver_dev_obj, diff the driver_device layer
new_driver_dev_obj = new_driver_device_list[new_cpid_list.index(s)]
old_driver_dev_obj = old_driver_device_list[old_cpid_list.index(s)]
# First, get dev_obj_list from hostname
device_obj_list = Device.get_list_by_hostname(context, host)
# Then, use controlpath_id.cpid_info to identiy one Device.
cpid_info = new_driver_dev_obj.controlpath_id.cpid_info
for dev_obj in device_obj_list:
# get cpid_obj, could be empty or only one value.
cpid_obj = ControlpathID.get_by_device_id_cpidinfo(
context, dev_obj.id, cpid_info)
# find the one cpid_obj with cpid_info
if cpid_obj is not None:
break
changed_key = [
'std_board_info', 'vendor', 'vendor_board_info', 'model',
'type'
]
for c_k in changed_key:
if getattr(new_driver_dev_obj, c_k) != getattr(
old_driver_dev_obj, c_k):
setattr(dev_obj, c_k, getattr(new_driver_dev_obj, c_k))
dev_obj.save(context)
# diff the internal layer: driver_deployable
cls.drv_deployable_make_diff(context, dev_obj.id, cpid_obj.id,
old_driver_dev_obj.deployable_list,
new_driver_dev_obj.deployable_list)
# device is deleted.
for d in deleted:
old_driver_dev_obj = old_driver_device_list[old_cpid_list.index(d)]
old_driver_dev_obj.destroy(context, host)
# device is added
for a in added:
new_driver_dev_obj = new_driver_device_list[new_cpid_list.index(a)]
new_driver_dev_obj.create(context, host)
def destroy(self, context, host):
"""Delete a driver-side Device Object from db. This should
delete the internal layer objects."""
# get dev_obj_list from hostname
device_obj = self.get_device_obj(context, host)
if hasattr(self.controlpath_id, 'cpid_info'):
cpid_obj = ControlpathID.get_by_device_id_cpidinfo(
context, device_obj.id, self.controlpath_id.cpid_info)
# delete controlpath_id
cpid_obj.destroy(context)
# delete deployable_list first.
for driver_deployable in self.deployable_list:
driver_deployable.destroy(context, device_obj.id)
# delete the device
device_obj.destroy(context)
def get_device_obj(self, context, host):
"""Get a driver-side Device Object from db.
:param context: requested context.
:param host: hostname of the node.
:return: a device object of current driver device object. It will
return on value because it has controlpath_id.
"""
# get dev_obj_list from hostname
device_obj_list = Device.get_list_by_hostname(context, host)
# use controlpath_id.cpid_info to identiy one Device.
for device_obj in device_obj_list:
# get cpid_obj, could be empty or only one value.
cpid_obj = ControlpathID.get_by_device_id_cpidinfo(
context, device_obj.id, self.controlpath_id.cpid_info)
# find the one cpid_obj with cpid_info
if cpid_obj is not None:
return device_obj
def destroy(self, context, device_id):
cpid_obj = ControlpathID.get_by_device_id_cpidinfo(
context, device_id, self.cpid_info)
if cpid_obj is not None:
cpid_obj.destroy(context)
def drv_device_make_diff(self, context, host, old_driver_device_list,
new_driver_device_list):
"""Compare new driver-side device object list with the old one in
one host.
"""
LOG.info("Start differing devices.")
# TODO(): The placement report will be implemented here.
# Use cpid.cpid_info to identify whether the device is the same.
stub_cpid_list = [
driver_dev_obj.controlpath_id.cpid_info
for driver_dev_obj in new_driver_device_list if driver_dev_obj.stub
]
new_cpid_list = [
driver_dev_obj.controlpath_id.cpid_info
for driver_dev_obj in new_driver_device_list
]
old_cpid_list = [
driver_dev_obj.controlpath_id.cpid_info
for driver_dev_obj in old_driver_device_list
]
same = set(new_cpid_list) & set(old_cpid_list) - set(stub_cpid_list)
added = set(new_cpid_list) - same - set(stub_cpid_list)
deleted = set(old_cpid_list) - same - set(stub_cpid_list)
host_rp = self._get_root_provider(context, host)
# device is deleted.
for d in deleted:
old_driver_dev_obj = old_driver_device_list[old_cpid_list.index(d)]
for driver_dep_obj in old_driver_dev_obj.deployable_list:
rp_uuid = self.get_rp_uuid_from_obj(driver_dep_obj)
self._delete_provider_and_sub_providers(context, rp_uuid)
old_driver_dev_obj.destroy(context, host)
# device is added
for a in added:
new_driver_dev_obj = new_driver_device_list[new_cpid_list.index(a)]
try:
new_driver_dev_obj.create(context, host)
except Exception as exc:
LOG.exception(
"Failed to add device %(device)s. "
"Reason: %(reason)s", {
'device': new_driver_dev_obj,
'reason': exc
})
new_driver_dev_obj.destroy(context, host)
# TODO(All): If report data to Placement raise exception, we
# should revert driver device created in Cyborg and rp created
# in Placement to reduce the risk of data inconsistency here
# between Cyborg and Placement, we will consider to fix in V
# release.
cleanup_inconsistency_resources = False
for driver_dep_obj in new_driver_dev_obj.deployable_list:
try:
self.get_placement_needed_info_and_report(
context, driver_dep_obj, host_rp)
except Exception as exc:
LOG.info(
"Failed to add device %(device)s. "
"Reason: %(reason)s", {
'device': new_driver_dev_obj,
'reason': exc
})
cleanup_inconsistency_resources = True
break
if cleanup_inconsistency_resources:
new_driver_dev_obj.destroy(context, host)
for driver_dep_obj in new_driver_dev_obj.deployable_list:
rp_uuid = self.get_rp_uuid_from_obj(driver_dep_obj)
self._delete_provider_and_sub_providers(context, rp_uuid)
for s in same:
# get the driver_dev_obj, diff the driver_device layer
new_driver_dev_obj = new_driver_device_list[new_cpid_list.index(s)]
old_driver_dev_obj = old_driver_device_list[old_cpid_list.index(s)]
# First, get dev_obj_list from hostname
device_obj_list = Device.get_list_by_hostname(context, host)
# Then, use controlpath_id.cpid_info to identiy one Device.
cpid_info = new_driver_dev_obj.controlpath_id.cpid_info
for dev_obj in device_obj_list:
# get cpid_obj, could be empty or only one value.
cpid_obj = ControlpathID.get_by_device_id_cpidinfo(
context, dev_obj.id, cpid_info)
# find the one cpid_obj with cpid_info
if cpid_obj is not None:
break
changed_key = [
'std_board_info', 'vendor', 'vendor_board_info', 'model',
'type'
]
for c_k in changed_key:
if getattr(new_driver_dev_obj, c_k) != getattr(
old_driver_dev_obj, c_k):
setattr(dev_obj, c_k, getattr(new_driver_dev_obj, c_k))
dev_obj.save(context)
# diff the internal layer: driver_deployable
self.drv_deployable_make_diff(context, dev_obj.id, cpid_obj.id,
old_driver_dev_obj.deployable_list,
new_driver_dev_obj.deployable_list,
host_rp)