3 # Copyright 2016 RIFT.IO Inc
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
25 gi
.require_version('RwDts', '1.0')
26 gi
.require_version('RwVnfrYang', '1.0')
27 from gi
.repository
import (
32 import rift
.openmano
.rift2openmano
as rift2openmano
33 import rift
.openmano
.openmano_client
as openmano_client
34 from . import rwnsmplugin
38 if sys
.version_info
< (3, 4, 4):
39 asyncio
.ensure_future
= asyncio
.async
42 DUMP_OPENMANO_DIR
= os
.path
.join(
43 os
.environ
["RIFT_ARTIFACTS"],
44 "openmano_descriptors"
48 def dump_openmano_descriptor(name
, descriptor_str
):
49 filename
= "{}_{}.yaml".format(
50 time
.strftime("%Y%m%d-%H%M%S"),
54 filepath
= os
.path
.join(
60 if not os
.path
.exists(DUMP_OPENMANO_DIR
):
61 os
.makedirs(DUMP_OPENMANO_DIR
)
63 with
open(filepath
, 'w') as hdl
:
64 hdl
.write(descriptor_str
)
67 print("Failed to dump openmano descriptor: %s" % str(e
))
71 class VnfrConsoleOperdataDtsHandler(object):
72 """ registers 'D,/vnfr:vnfr-console/vnfr:vnfr[id]/vdur[id]' and handles CRUD from DTS"""
74 def vnfr_vdu_console_xpath(self
):
75 """ path for resource-mgr"""
76 return ("D,/rw-vnfr:vnfr-console/rw-vnfr:vnfr[rw-vnfr:id='{}']/rw-vnfr:vdur[vnfr:id='{}']".format(self
._vnfr
_id
,self
._vdur
_id
))
78 def __init__(self
, dts
, log
, loop
, nsr
, vnfr_id
, vdur_id
, vdu_id
):
85 self
._vnfr
_id
= vnfr_id
86 self
._vdur
_id
= vdur_id
91 """ Register for VNFR VDU Operational Data read from dts """
94 def on_prepare(xact_info
, action
, ks_path
, msg
):
95 """ prepare callback from dts """
96 xpath
= ks_path
.to_xpath(RwVnfrYang
.get_schema())
98 "Got VNFR VDU Opdata xact_info: %s, action: %s): %s:%s",
99 xact_info
, action
, xpath
, msg
102 if action
== rwdts
.QueryAction
.READ
:
103 schema
= RwVnfrYang
.YangData_RwVnfr_VnfrConsole_Vnfr_Vdur
.schema()
104 path_entry
= schema
.keyspec_to_entry(ks_path
)
105 self
._log
.debug("VDU Opdata path is {}".format(path_entry
))
108 console_url
= yield from self
._loop
.run_in_executor(
110 self
._nsr
._http
_api
.get_instance_vm_console_url
,
115 self
._log
.debug("Got console response: %s for NSR ID %s vdur ID %s",
120 vdur_console
= RwVnfrYang
.YangData_RwVnfr_VnfrConsole_Vnfr_Vdur()
121 vdur_console
.id = self
._vdur
_id
123 vdur_console
.console_url
= console_url
125 vdur_console
.console_url
= 'none'
126 self
._log
.debug("Recevied console URL for vdu {} is {}".format(self
._vdu
_id
,vdur_console
))
127 except openmano_client
.InstanceStatusError
as e
:
128 self
._log
.error("Could not get NS instance console URL: %s",
130 vdur_console
= RwVnfrYang
.YangData_RwVnfr_VnfrConsole_Vnfr_Vdur()
131 vdur_console
.id = self
._vdur
_id
132 vdur_console
.console_url
= 'none'
134 xact_info
.respond_xpath(rsp_code
=rwdts
.XactRspCode
.ACK
,
135 xpath
=self
.vnfr_vdu_console_xpath
,
138 #raise VnfRecordError("Not supported operation %s" % action)
139 self
._log
.error("Not supported operation %s" % action
)
140 xact_info
.respond_xpath(rsp_code
=rwdts
.XactRspCode
.ACK
)
143 self
._log
.debug("Registering for VNFR VDU using xpath: %s",
144 self
.vnfr_vdu_console_xpath
)
145 hdl
= rift
.tasklets
.DTS
.RegistrationHandler(on_prepare
=on_prepare
,)
146 with self
._dts
.group_create() as group
:
147 self
._regh
= group
.register(xpath
=self
.vnfr_vdu_console_xpath
,
149 flags
=rwdts
.Flag
.PUBLISHER
,
154 class OpenmanoVnfr(object):
155 def __init__(self
, log
, loop
, cli_api
, vnfr
):
158 self
._cli
_api
= cli_api
160 self
._vnfd
_id
= vnfr
.vnfd
.id
164 self
._created
= False
168 return rift2openmano
.RiftVNFD(self
._vnfr
.vnfd
)
175 def rift_vnfd_id(self
):
179 def openmano_vnfd_id(self
):
183 def openmano_vnfd(self
):
184 self
._log
.debug("Converting vnfd %s from rift to openmano", self
.vnfd
.id)
185 openmano_vnfd
= rift2openmano
.rift2openmano_vnfd(self
.vnfd
)
189 def openmano_vnfd_yaml(self
):
190 return yaml
.safe_dump(self
.openmano_vnfd
, default_flow_style
=False)
194 self
._log
.debug("Creating openmano vnfd")
195 openmano_vnfd
= self
.openmano_vnfd
196 name
= openmano_vnfd
["vnf"]["name"]
198 # If the name already exists, get the openmano vnfd id
199 name_uuid_map
= yield from self
._loop
.run_in_executor(
201 self
._cli
_api
.vnf_list
,
204 if name
in name_uuid_map
:
205 vnf_id
= name_uuid_map
[name
]
206 self
._log
.debug("Vnf already created. Got existing openmano vnfd id: %s", vnf_id
)
207 self
._vnf
_id
= vnf_id
210 self
._vnf
_id
, _
= yield from self
._loop
.run_in_executor(
212 self
._cli
_api
.vnf_create
,
213 self
.openmano_vnfd_yaml
,
216 fpath
= dump_openmano_descriptor(
217 "{}_vnf".format(name
),
218 self
.openmano_vnfd_yaml
221 self
._log
.debug("Dumped Openmano VNF descriptor to: %s", fpath
)
227 if not self
._created
:
230 self
._log
.debug("Deleting openmano vnfd")
231 if self
._vnf
_id
is None:
232 self
._log
.warning("Openmano vnf id not set. Cannot delete.")
235 yield from self
._loop
.run_in_executor(
237 self
._cli
_api
.vnf_delete
,
242 class OpenmanoNsr(object):
245 def __init__(self
, dts
, log
, loop
, publisher
, cli_api
, http_api
, nsd_msg
, nsr_config_msg
):
249 self
._publisher
= publisher
250 self
._cli
_api
= cli_api
251 self
._http
_api
= http_api
253 self
._nsd
_msg
= nsd_msg
254 self
._nsr
_config
_msg
= nsr_config_msg
258 self
._vdur
_console
_handler
= {}
260 self
._nsd
_uuid
= None
261 self
._nsr
_uuid
= None
265 self
._created
= False
267 self
._monitor
_task
= None
271 return rift2openmano
.RiftNSD(self
._nsd
_msg
)
275 return {v
.rift_vnfd_id
: v
.vnfd
for v
in self
._vnfrs
}
282 def openmano_nsd_yaml(self
):
283 self
._log
.debug("Converting nsd %s from rift to openmano", self
.nsd
.id)
284 openmano_nsd
= rift2openmano
.rift2openmano_nsd(self
.nsd
, self
.vnfds
)
285 return yaml
.safe_dump(openmano_nsd
, default_flow_style
=False)
289 def openmano_instance_create_yaml(self
):
290 self
._log
.debug("Creating instance-scenario-create input file for nsd %s with name %s", self
.nsd
.id, self
._nsr
_config
_msg
.name
)
291 openmano_instance_create
= {}
292 openmano_instance_create
["name"] = self
._nsr
_config
_msg
.name
293 openmano_instance_create
["description"] = self
._nsr
_config
_msg
.description
294 openmano_instance_create
["scenario"] = self
._nsd
_uuid
295 if self
._nsr
_config
_msg
.has_field("om_datacenter"):
296 openmano_instance_create
["datacenter"] = self
._nsr
_config
_msg
.om_datacenter
297 openmano_instance_create
["vnfs"] = {}
298 for vnfr
in self
._vnfrs
:
299 if "om_datacenter" in vnfr
.vnfr
.vnfr_msg
:
300 vnfr_name
= vnfr
.vnfr
.vnfd
.name
+ "__" + str(vnfr
.vnfr
.vnfr_msg
.member_vnf_index_ref
)
301 openmano_instance_create
["vnfs"][vnfr_name
] = {"datacenter": vnfr
.vnfr
.vnfr_msg
.om_datacenter
}
302 openmano_instance_create
["networks"] = {}
303 for vld_msg
in self
._nsd
_msg
.vld
:
304 openmano_instance_create
["networks"][vld_msg
.name
] = {}
305 openmano_instance_create
["networks"][vld_msg
.name
]["sites"] = list()
306 for vlr
in self
._vlrs
:
307 if vlr
.vld_msg
.name
== vld_msg
.name
:
308 self
._log
.debug("Received VLR name %s, VLR DC: %s for VLD: %s",vlr
.vld_msg
.name
,
309 vlr
.om_datacenter_name
,vld_msg
.name
)
310 #network["vim-network-name"] = vld_msg.name
313 if vld_msg
.vim_network_name
:
314 network
["netmap-use"] = vld_msg
.vim_network_name
315 elif vlr
._ip
_profile
and vlr
._ip
_profile
.has_field("ip_profile_params"):
316 ip_profile_params
= vlr
._ip
_profile
.ip_profile_params
317 if ip_profile_params
.ip_version
== "ipv6":
318 ip_profile
['ip-version'] = "IPv6"
320 ip_profile
['ip-version'] = "IPv4"
321 if ip_profile_params
.has_field('subnet_address'):
322 ip_profile
['subnet-address'] = ip_profile_params
.subnet_address
323 if ip_profile_params
.has_field('gateway_address'):
324 ip_profile
['gateway-address'] = ip_profile_params
.gateway_address
325 if ip_profile_params
.has_field('dns_server') and len(ip_profile_params
.dns_server
) > 0:
326 ip_profile
['dns-address'] = ip_profile_params
.dns_server
[0]
327 if ip_profile_params
.has_field('dhcp_params'):
328 ip_profile
['dhcp'] = {}
329 ip_profile
['dhcp']['enabled'] = ip_profile_params
.dhcp_params
.enabled
330 ip_profile
['dhcp']['start-address'] = ip_profile_params
.dhcp_params
.start_address
331 ip_profile
['dhcp']['count'] = ip_profile_params
.dhcp_params
.count
333 network
["netmap-create"] = vlr
.name
334 if vlr
.om_datacenter_name
:
335 network
["datacenter"] = vlr
.om_datacenter_name
336 elif vld_msg
.has_field("om_datacenter"):
337 network
["datacenter"] = vld_msg
.om_datacenter
338 elif "datacenter" in openmano_instance_create
:
339 network
["datacenter"] = openmano_instance_create
["datacenter"]
341 openmano_instance_create
["networks"][vld_msg
.name
]["sites"].append(network
)
343 openmano_instance_create
["networks"][vld_msg
.name
]['ip-profile'] = ip_profile
345 return yaml
.safe_dump(openmano_instance_create
, default_flow_style
=False)
348 def add_vlr(self
, vlr
):
349 self
._vlrs
.append(vlr
)
350 yield from asyncio
.sleep(1, loop
=self
._loop
)
353 def add_vnfr(self
, vnfr
):
354 vnfr
= OpenmanoVnfr(self
._log
, self
._loop
, self
._cli
_api
, vnfr
)
355 yield from vnfr
.create()
356 self
._vnfrs
.append(vnfr
)
360 if not self
._created
:
361 self
._log
.debug("NSD wasn't created. Skipping delete.")
364 self
._log
.debug("Deleting openmano nsr")
366 yield from self
._loop
.run_in_executor(
368 self
._cli
_api
.ns_delete
,
372 self
._log
.debug("Deleting openmano vnfrs")
373 for vnfr
in self
._vnfrs
:
374 yield from vnfr
.delete()
379 self
._log
.debug("Creating openmano scenario")
380 name_uuid_map
= yield from self
._loop
.run_in_executor(
382 self
._cli
_api
.ns_list
,
385 if self
._nsd
_msg
.name
in name_uuid_map
:
386 self
._log
.debug("Found existing openmano scenario")
387 self
._nsd
_uuid
= name_uuid_map
[self
._nsd
_msg
.name
]
391 # Use the nsd uuid as the scenario name to rebind to existing
392 # scenario on reload or to support muliple instances of the name
394 self
._nsd
_uuid
, _
= yield from self
._loop
.run_in_executor(
396 self
._cli
_api
.ns_create
,
397 self
.openmano_nsd_yaml
,
400 fpath
= dump_openmano_descriptor(
401 "{}_nsd".format(self
._nsd
_msg
.name
),
402 self
.openmano_nsd_yaml
,
405 self
._log
.debug("Dumped Openmano NS descriptor to: %s", fpath
)
410 def instance_monitor_task(self
):
411 self
._log
.debug("Starting Instance monitoring task")
413 start_time
= time
.time()
417 yield from asyncio
.sleep(1, loop
=self
._loop
)
420 instance_resp_json
= yield from self
._loop
.run_in_executor(
422 self
._http
_api
.get_instance
,
426 self
._log
.debug("Got instance response: %s for NSR ID %s",
430 except openmano_client
.InstanceStatusError
as e
:
431 self
._log
.error("Could not get NS instance status: %s", str(e
))
434 def all_vms_active(vnf
):
435 for vm
in vnf
["vms"]:
436 vm_status
= vm
["status"]
438 if vm_status
!= "ACTIVE":
439 self
._log
.debug("VM is not yet active: %s (status: %s)", vm_uuid
, vm_status
)
444 def any_vm_active_nomgmtip(vnf
):
445 for vm
in vnf
["vms"]:
446 vm_status
= vm
["status"]
448 if vm_status
!= "ACTIVE":
449 self
._log
.debug("VM is not yet active: %s (status: %s)", vm_uuid
, vm_status
)
454 def any_vms_error(vnf
):
455 for vm
in vnf
["vms"]:
456 vm_status
= vm
["status"]
457 vm_vim_info
= vm
["vim_info"]
459 if vm_status
== "ERROR":
460 self
._log
.error("VM Error: %s (vim_info: %s)", vm_uuid
, vm_vim_info
)
465 def get_vnf_ip_address(vnf
):
466 if "ip_address" in vnf
:
467 return vnf
["ip_address"].strip()
470 def get_ext_cp_info(vnf
):
472 for vm
in vnf
["vms"]:
473 if "interfaces" not in vm
:
476 for intf
in vm
["interfaces"]:
477 if "external_name" not in intf
:
480 if not intf
["external_name"]:
483 ip_address
= intf
["ip_address"]
484 if ip_address
is None:
485 ip_address
= "0.0.0.0"
487 cp_info_list
.append((intf
["external_name"], ip_address
))
491 def get_vnf_status(vnfr
):
492 # When we create an openmano descriptor we use <name>__<idx>
493 # to come up with openmano constituent VNF name. Use this
494 # knowledge to map the vnfr back.
495 openmano_vnfr_suffix
= "__{}".format(
496 vnfr
.vnfr
.vnfr_msg
.member_vnf_index_ref
499 for vnf
in instance_resp_json
["vnfs"]:
500 if vnf
["vnf_name"].endswith(openmano_vnfr_suffix
):
503 self
._log
.warning("Could not find vnf status with name that ends with: %s",
504 openmano_vnfr_suffix
)
507 for vnfr
in self
._vnfrs
:
508 if vnfr
in active_vnfs
:
509 # Skipping, so we don't re-publish the same VNF message.
512 vnfr_msg
= vnfr
.vnfr
.vnfr_msg
.deep_copy()
513 vnfr_msg
.operational_status
= "init"
516 vnf_status
= get_vnf_status(vnfr
)
517 self
._log
.debug("Found VNF status: %s", vnf_status
)
518 if vnf_status
is None:
519 self
._log
.error("Could not find VNF status from openmano")
520 vnfr_msg
.operational_status
= "failed"
521 yield from self
._publisher
.publish_vnfr(None, vnfr_msg
)
524 # If there was a VNF that has a errored VM, then just fail the VNF and stop monitoring.
525 if any_vms_error(vnf_status
):
526 self
._log
.debug("VM was found to be in error state. Marking as failed.")
527 vnfr_msg
.operational_status
= "failed"
528 yield from self
._publisher
.publish_vnfr(None, vnfr_msg
)
531 if all_vms_active(vnf_status
):
532 vnf_ip_address
= get_vnf_ip_address(vnf_status
)
534 if vnf_ip_address
is None:
535 self
._log
.warning("No IP address obtained "
536 "for VNF: {}, will retry.".format(
537 vnf_status
['vnf_name']))
540 self
._log
.debug("All VMs in VNF are active. Marking as running.")
541 vnfr_msg
.operational_status
= "running"
543 self
._log
.debug("Got VNF ip address: %s", vnf_ip_address
)
544 vnfr_msg
.mgmt_interface
.ip_address
= vnf_ip_address
545 vnfr_msg
.vnf_configuration
.config_access
.mgmt_ip_address
= vnf_ip_address
548 for vm
in vnf_status
["vms"]:
549 if vm
["uuid"] not in self
._vdur
_console
_handler
:
550 vdur_console_handler
= VnfrConsoleOperdataDtsHandler(self
._dts
, self
._log
, self
._loop
,
551 self
, vnfr_msg
.id,vm
["uuid"],vm
["name"])
552 yield from vdur_console_handler
.register()
553 self
._vdur
_console
_handler
[vm
["uuid"]] = vdur_console_handler
555 vdur_msg
= vnfr_msg
.vdur
.add()
556 vdur_msg
.vim_id
= vm
["vim_vm_id"]
557 vdur_msg
.id = vm
["uuid"]
559 # Add connection point information for the config manager
560 cp_info_list
= get_ext_cp_info(vnf_status
)
561 for (cp_name
, cp_ip
) in cp_info_list
:
562 cp
= vnfr_msg
.connection_point
.add()
564 cp
.short_name
= cp_name
565 cp
.ip_address
= cp_ip
567 yield from self
._publisher
.publish_vnfr(None, vnfr_msg
)
568 active_vnfs
.append(vnfr
)
570 if (time
.time() - start_time
) > OpenmanoNsr
.TIMEOUT_SECS
:
571 self
._log
.error("NSR timed out before reaching running state")
572 vnfr_msg
.operational_status
= "failed"
573 yield from self
._publisher
.publish_vnfr(None, vnfr_msg
)
576 except Exception as e
:
577 vnfr_msg
.operational_status
= "failed"
578 yield from self
._publisher
.publish_vnfr(None, vnfr_msg
)
579 self
._log
.exception("Caught exception publishing vnfr info: %s", str(e
))
582 if len(active_vnfs
) == len(self
._vnfrs
):
583 self
._log
.info("All VNF's are active. Exiting NSR monitoring task")
587 def deploy(self
,nsr_msg
):
588 if self
._nsd
_uuid
is None:
589 raise ValueError("Cannot deploy an uncreated nsd")
591 self
._log
.debug("Deploying openmano scenario")
593 name_uuid_map
= yield from self
._loop
.run_in_executor(
595 self
._cli
_api
.ns_instance_list
,
598 if self
._nsr
_config
_msg
.name
in name_uuid_map
:
599 self
._log
.debug("Found existing instance with nsr name: %s", self
._nsr
_config
_msg
.name
)
600 self
._nsr
_uuid
= name_uuid_map
[self
._nsr
_config
_msg
.name
]
602 self
._nsr
_msg
= nsr_msg
603 fpath
= dump_openmano_descriptor(
604 "{}_instance_sce_create".format(self
._nsr
_config
_msg
.name
),
605 self
.openmano_instance_create_yaml
,
607 self
._log
.debug("Dumped Openmano NS Scenario Cretae to: %s", fpath
)
609 self
._nsr
_uuid
= yield from self
._loop
.run_in_executor(
611 self
._cli
_api
.ns_instance_scenario_create
,
612 self
.openmano_instance_create_yaml
)
615 self
._monitor
_task
= asyncio
.ensure_future(
616 self
.instance_monitor_task(), loop
=self
._loop
622 for _
,handler
in self
._vdur
_console
_handler
.items():
623 handler
._regh
.deregister()
625 if self
._nsr
_uuid
is None:
626 self
._log
.warning("Cannot terminate an un-instantiated nsr")
629 if self
._monitor
_task
is not None:
630 self
._monitor
_task
.cancel()
631 self
._monitor
_task
= None
633 self
._log
.debug("Terminating openmano nsr")
634 yield from self
._loop
.run_in_executor(
636 self
._cli
_api
.ns_terminate
,
641 class OpenmanoNsPlugin(rwnsmplugin
.NsmPluginBase
):
643 RW Implentation of the NsmPluginBase
645 def __init__(self
, dts
, log
, loop
, publisher
, ro_account
):
649 self
._publisher
= publisher
652 self
._http
_api
= None
653 self
._openmano
_nsrs
= {}
655 self
._set
_ro
_account
(ro_account
)
657 def _set_ro_account(self
, ro_account
):
658 self
._log
.debug("Setting openmano plugin cloud account: %s", ro_account
)
659 self
._cli
_api
= openmano_client
.OpenmanoCliAPI(
661 ro_account
.openmano
.host
,
662 ro_account
.openmano
.port
,
663 ro_account
.openmano
.tenant_id
,
666 self
._http
_api
= openmano_client
.OpenmanoHttpAPI(
668 ro_account
.openmano
.host
,
669 ro_account
.openmano
.port
,
670 ro_account
.openmano
.tenant_id
,
673 def create_nsr(self
, nsr_config_msg
, nsd_msg
):
675 Create Network service record
677 openmano_nsr
= OpenmanoNsr(
687 self
._openmano
_nsrs
[nsr_config_msg
.id] = openmano_nsr
690 def deploy(self
, nsr_msg
):
691 self
._log
.debug("Received NSR Deploy msg : %s", nsr_msg
)
692 openmano_nsr
= self
._openmano
_nsrs
[nsr_msg
.ns_instance_config_ref
]
693 yield from openmano_nsr
.create()
694 yield from openmano_nsr
.deploy(nsr_msg
)
697 def instantiate_ns(self
, nsr
, xact
):
699 Instantiate NSR with the passed nsr id
701 yield from nsr
.instantiate(xact
)
704 def instantiate_vnf(self
, nsr
, vnfr
):
706 Instantiate NSR with the passed nsr id
708 openmano_nsr
= self
._openmano
_nsrs
[nsr
.id]
709 yield from openmano_nsr
.add_vnfr(vnfr
)
711 # Mark the VNFR as running
712 # TODO: Create a task to monitor nsr/vnfr status
713 vnfr_msg
= vnfr
.vnfr_msg
.deep_copy()
714 vnfr_msg
.operational_status
= "init"
716 self
._log
.debug("Attempting to publish openmano vnf: %s", vnfr_msg
)
717 with self
._dts
.transaction() as xact
:
718 yield from self
._publisher
.publish_vnfr(xact
, vnfr_msg
)
721 def instantiate_vl(self
, nsr
, vlr
):
723 Instantiate NSR with the passed nsr id
725 self
._log
.debug("Received instantiate VL for NSR {}; VLR {}".format(nsr
.id,vlr
))
726 openmano_nsr
= self
._openmano
_nsrs
[nsr
.id]
727 yield from openmano_nsr
.add_vlr(vlr
)
730 def terminate_ns(self
, nsr
):
732 Terminate the network service
735 openmano_nsr
= self
._openmano
_nsrs
[nsr_id
]
736 yield from openmano_nsr
.terminate()
737 yield from openmano_nsr
.delete()
739 with self
._dts
.transaction() as xact
:
740 for vnfr
in openmano_nsr
.vnfrs
:
741 self
._log
.debug("Unpublishing VNFR: %s", vnfr
.vnfr
.vnfr_msg
)
742 yield from self
._publisher
.unpublish_vnfr(xact
, vnfr
.vnfr
.vnfr_msg
)
744 del self
._openmano
_nsrs
[nsr_id
]
747 def terminate_vnf(self
, vnfr
):
749 Terminate the network service
754 def terminate_vl(self
, vlr
):
756 Terminate the virtual link