pass
-class NetworkServiceDescriptorRefCountExists(Exception):
+class NetworkServiceDescriptorNotFound(Exception):
""" Network Service Descriptor reference count exists """
pass
-
-class NetworkServiceDescriptorUnrefError(Exception):
- """ Failed to unref a network service descriptor """
- pass
-
-
class NsrInstantiationFailed(Exception):
""" Failed to instantiate network service """
pass
for vlr in self._vlrs:
yield from self.nsm_plugin.instantiate_vl(self, vlr)
vlr.state = VlRecordState.ACTIVE
- self.vlr_uptime_tasks[vlr.id] = self._loop.create_task(self.vlr_uptime_update(vlr))
def vlr_uptime_update(self, vlr):
# Find the NSD
self._nsd = self._nsr_cfg_msg.nsd
- try:
- # Update ref count if nsd present in catalog
- self._nsm.get_nsd_ref(self.nsd_id)
-
- except NetworkServiceDescriptorError:
- # This could be an NSD not in the nsd-catalog
- pass
-
# Merge any config and initial config primitive values
self.config_store.merge_nsd_config(self.nsd_msg)
self._log.debug("Merged NSD: {}".format(self.nsd_msg.as_dict()))
self._loop = loop
self._nsd = nsd
- self._ref_count = 0
-
self._nsm = nsm
@property
""" Returns name of nsd """
return self._nsd.name
- @property
- def ref_count(self):
- """ Returns reference count"""
- return self._ref_count
-
- def in_use(self):
- """ Returns whether nsd is in use or not """
- return True if self.ref_count > 0 else False
-
- def ref(self):
- """ Take a reference on this object """
- self._ref_count += 1
-
- def unref(self):
- """ Release reference on this object """
- if self.ref_count < 1:
- msg = ("Unref on a NSD object - nsd id %s, ref_count = %s" %
- (self.id, self.ref_count))
- self._log.critical(msg)
- raise NetworkServiceDescriptorError(msg)
- self._ref_count -= 1
-
@property
def msg(self):
""" Return the message associated with this NetworkServiceDescriptor"""
if fref.is_field_deleted():
# Delete an NSD record
self._log.debug("Deleting NSD with id %s", msg.id)
- if self._nsm.nsd_in_use(msg.id):
- self._log.debug("Cannot delete NSD in use - %s", msg.id)
- err = "Cannot delete an NSD in use - %s" % msg.id
- raise NetworkServiceDescriptorRefCountExists(err)
-
yield from delete_nsd_libs(msg.id)
self._nsm.delete_nsd(msg.id)
else:
flags=(rwdts.Flag.SUBSCRIBER),)
-class NsdRefCountDtsHandler(object):
- """ The NSD Ref Count DTS handler """
- XPATH = "D,/nsr:ns-instance-opdata/rw-nsr:nsd-ref-count"
-
- def __init__(self, dts, log, loop, nsm):
- self._dts = dts
- self._log = log
- self._loop = loop
- self._nsm = nsm
-
- self._regh = None
-
- @property
- def regh(self):
- """ Return registration handle """
- return self._regh
-
- @property
- def nsm(self):
- """ Return the NS manager instance """
- return self._nsm
-
- @asyncio.coroutine
- def register(self):
- """ Register for NSD ref count read from dts """
-
- @asyncio.coroutine
- def on_prepare(xact_info, action, ks_path, msg):
- """ prepare callback from dts """
- xpath = ks_path.to_xpath(RwNsrYang.get_schema())
-
- if action == rwdts.QueryAction.READ:
- schema = RwNsrYang.YangData_Nsr_NsInstanceOpdata_NsdRefCount.schema()
- path_entry = schema.keyspec_to_entry(ks_path)
- nsd_list = yield from self._nsm.get_nsd_refcount(path_entry.key00.nsd_id_ref)
- for xpath, msg in nsd_list:
- xact_info.respond_xpath(rsp_code=rwdts.XactRspCode.MORE,
- xpath=xpath,
- msg=msg)
- xact_info.respond_xpath(rwdts.XactRspCode.ACK)
- else:
- raise NetworkServiceRecordError("Not supported operation %s" % action)
-
- hdl = rift.tasklets.DTS.RegistrationHandler(on_prepare=on_prepare,)
- with self._dts.group_create() as group:
- self._regh = group.register(xpath=NsdRefCountDtsHandler.XPATH,
- handler=hdl,
- flags=rwdts.Flag.PUBLISHER,)
-
-
class NsManager(object):
""" The Network Service Manager class"""
def __init__(self, dts, log, loop,
self._conf_url = "https://{ip}:{port}/api/config". \
format(ip=self._ip,
port=self._rport)
-
+
self._nsrs = {}
self._nsds = {}
self._vnfds = {}
self._vnfd_dts_handler = VnfdDtsHandler(dts, log, loop, self)
self._dts_handlers = [self._nsd_dts_handler,
VnfrDtsHandler(dts, log, loop, self),
- NsdRefCountDtsHandler(dts, log, loop, self),
NsrDtsHandler(dts, log, loop, self),
ScalingRpcHandler(log, dts, loop, self.scale_rpc_callback),
NsrRpcDtsHandler(dts,log,loop,self),
return None
scaling_group_info = json.loads(output.text)
return scaling_group_info
-
+
def config_scaling_group_information(scaling_group_info):
data_str = json.dumps(scaling_group_info)
self.log.debug("scaling group Info %s", data_str)
scale_out_url = "{url}/ns-instance-config/nsr/{nsr_id}".format(url=self._conf_url, nsr_id=msg.nsr_id_ref)
response = requests.put(scale_out_url, data=data_str, verify=False, auth=(self._user, self._password), headers=self._headers)
response.raise_for_status()
-
+
def scale_out():
scaling_group_info = get_scaling_group_information()
if scaling_group_info is None:
return
-
+
scaling_group_present = False
if "scaling-group" in scaling_group_info["nsr:nsr"]:
scaling_group_array = scaling_group_info["nsr:nsr"]["scaling-group"]
for instance in scaling_group['instance']:
if instance["id"] == int(msg.instance_id):
self.log.error("scaling group with instance id %s exists for scale out", msg.instance_id)
- return
- scaling_group["instance"].append({"id": int(msg.instance_id)})
-
+ return
+ scaling_group["instance"].append({"id": int(msg.instance_id)})
+
if not scaling_group_present:
scaling_group_info["nsr:nsr"]["scaling-group"] = [{"scaling-group-name-ref": msg.scaling_group_name_ref, "instance": [{"id": msg.instance_id}]}]
-
+
config_scaling_group_information(scaling_group_info)
return
scaling_group_info = get_scaling_group_information()
if scaling_group_info is None:
return
-
+
scaling_group_array = scaling_group_info["nsr:nsr"]["scaling-group"]
scaling_group_present = False
instance_id_present = False
scaling_group_present = True
if 'instance' in scaling_group:
instance_array = scaling_group["instance"];
- for index in range(len(instance_array)):
+ for index in range(len(instance_array)):
if instance_array[index]["id"] == int(msg.instance_id):
instance_array.pop(index)
instance_id_present = True
break
-
+
if not scaling_group_present:
self.log.error("Scaling group %s doesnot exists for scale in", msg.scaling_group_name_ref)
return
-
+
if not instance_id_present:
self.log.error("Instance id %s doesnot exists for scale in", msg.instance_id)
return
-
+
config_scaling_group_information(scaling_group_info)
return
""" Delete VNFR with the passed id"""
del self._vnfrs[vnfr_id]
- def get_nsd_ref(self, nsd_id):
- """ Get network service descriptor for the passed nsd_id
- with a reference"""
- nsd = self.get_nsd(nsd_id)
- nsd.ref()
- return nsd
-
@asyncio.coroutine
def get_nsr_config(self, nsd_id):
xpath = "C,/nsr:ns-instance-config"
return None
- @asyncio.coroutine
- def nsd_unref_by_nsr_id(self, nsr_id):
- """ Unref the network service descriptor based on NSR id """
- self._log.debug("NSR Unref called for Nsr Id:%s", nsr_id)
- if nsr_id in self._nsrs:
- nsr = self._nsrs[nsr_id]
-
- try:
- nsd = self.get_nsd(nsr.nsd_id)
- self._log.debug("Releasing ref on NSD %s held by NSR %s - Curr %d",
- nsd.id, nsr.id, nsd.ref_count)
- nsd.unref()
- except NetworkServiceDescriptorError:
- # We store a copy of NSD in NSR and the NSD in nsd-catalog
- # could be deleted
- pass
-
- else:
- self._log.error("Cannot find NSR with id %s", nsr_id)
- raise NetworkServiceDescriptorUnrefError("No NSR with id" % nsr_id)
-
- @asyncio.coroutine
- def nsd_unref(self, nsd_id):
- """ Unref the network service descriptor associated with the id """
- nsd = self.get_nsd(nsd_id)
- nsd.unref()
-
def get_nsd(self, nsd_id):
""" Get network service descriptor for the passed nsd_id"""
if nsd_id not in self._nsds:
if nsd_id not in self._nsds:
self._log.debug("Delete NSD failed - cannot find nsd-id %s", nsd_id)
raise NetworkServiceDescriptorNotFound("Cannot find %s", nsd_id)
-
- if nsd_id not in self._nsds:
- self._log.debug("Cannot delete NSD id %s reference exists %s",
- nsd_id,
- self._nsds[nsd_id].ref_count)
- raise NetworkServiceDescriptorRefCountExists(
- "Cannot delete :%s, ref_count:%s",
- nsd_id,
- self._nsds[nsd_id].ref_count)
-
del self._nsds[nsd_id]
def get_vnfd_config(self, xact):
del self._vnfds[vnfd_id]
- def nsd_in_use(self, nsd_id):
- """ Is the NSD with the passed id in use """
- self._log.debug("Is this NSD in use - msg:%s", nsd_id)
- if nsd_id in self._nsds:
- return self._nsds[nsd_id].in_use()
- return False
-
@asyncio.coroutine
def publish_nsr(self, xact, path, msg):
""" Publish a NSR """
raise VirtualNetworkFunctionRecordError(err)
self._vnfrs[vnfr_id].is_ready()
- @asyncio.coroutine
- def get_nsd_refcount(self, nsd_id):
- """ Get the nsd_list from this NSM"""
-
- def nsd_refcount_xpath(nsd_id):
- """ xpath for ref count entry """
- return (NsdRefCountDtsHandler.XPATH +
- "[rw-nsr:nsd-id-ref = '{}']").format(nsd_id)
-
- nsd_list = []
- if nsd_id is None or nsd_id == "":
- for nsd in self._nsds.values():
- nsd_msg = RwNsrYang.YangData_Nsr_NsInstanceOpdata_NsdRefCount()
- nsd_msg.nsd_id_ref = nsd.id
- nsd_msg.instance_ref_count = nsd.ref_count
- nsd_list.append((nsd_refcount_xpath(nsd.id), nsd_msg))
- elif nsd_id in self._nsds:
- nsd_msg = RwNsrYang.YangData_Nsr_NsInstanceOpdata_NsdRefCount()
- nsd_msg.nsd_id_ref = self._nsds[nsd_id].id
- nsd_msg.instance_ref_count = self._nsds[nsd_id].ref_count
- nsd_list.append((nsd_refcount_xpath(nsd_id), nsd_msg))
-
- return nsd_list
@asyncio.coroutine
def terminate_ns(self, nsr_id, xact):
except Exception as e:
self.log.exception("Failed to terminate NSR[id=%s]", nsr_id)
- # Unref the NSD
- yield from self.nsd_unref_by_nsr_id(nsr_id)
-
# Unpublish the NSR record
self._log.debug("Unpublishing the network service %s", nsr_id)
yield from self._nsrs[nsr_id].unpublish(xact)
projects / osm / SO.git / commitdiff