See the License for the specific language governing permissions and
limitations under the License.
-Neither the name of the SONATA-NFV [, ANY ADDITIONAL AFFILIATION]
+Neither the name of the SONATA-NFV, Paderborn University
nor the names of its contributors may be used to endorse or promote
products derived from this software without specific prior written
permission.
from random import randint
import ipaddress
import copy
+import time
logging.basicConfig()
LOG = logging.getLogger("sonata-dummy-gatekeeper")
# path to the VNFD for the SAP VNF that is deployed as internal SAP point
SAP_VNFD=None
+# Time in seconds to wait for vnf stop scripts to execute fully
+VNF_STOP_WAIT_TIME = 5
+
class Gatekeeper(object):
def __init__(self):
self._start_sap(self.saps[sap], instance_uuid)
# 5. Deploy E-Line and E_LAN links
- if "virtual_links" in self.nsd:
+ # Attention: Only done if ""forwarding_graphs" section in NSD exists,
+ # even if "forwarding_graphs" are not used directly.
+ if "virtual_links" in self.nsd and "forwarding_graphs" in self.nsd:
vlinks = self.nsd["virtual_links"]
# constituent virtual links are not checked
#fwd_links = self.nsd["forwarding_graphs"][0]["constituent_virtual_links"]
# instance_uuid = str(self.uuid.uuid4())
vnf_instances = self.instances[instance_uuid]["vnf_instances"]
+ # trigger stop skripts in vnf instances and wait a few seconds for completion
+ self._trigger_emulator_stop_scripts_in_vnfis(vnf_instances)
+ time.sleep(VNF_STOP_WAIT_TIME)
+
for v in vnf_instances:
self._stop_vnfi(v)
t.daemon = True
t.start()
+ def _trigger_emulator_stop_scripts_in_vnfis(self, vnfi_list):
+ for vnfi in vnfi_list:
+ config = vnfi.dcinfo.get("Config", dict())
+ env = config.get("Env", list())
+ for env_var in env:
+ var, cmd = map(str.strip, map(str, env_var.split('=', 1)))
+ if var=="SON_EMU_CMD_STOP":
+ LOG.info("Executing stop script in %r: %r" % (vnfi.name, cmd))
+ # execute command in new thread to ensure that GK is not blocked by VNF
+ t = threading.Thread(target=vnfi.cmdPrint, args=(cmd,))
+ t.daemon = True
+ t.start()
+
+
+
def _unpack_service_package(self):
"""
unzip *.son file and store contents in CATALOG_FOLDER/services/<service_uuid>/
"Setting up E-LAN interface. (%s:%s) -> %s" % (
vnf_id, intf_name, ip_address))
- if vnf_id in self.vnfds:
- # re-configure the VNFs IP assignment and ensure that a new subnet is used for each E-LAN
- # E-LAN relies on the learning switch capability of Ryu which has to be turned on in the topology
- # (DCNetwork(controller=RemoteController, enable_learning=True)), so no explicit chaining is necessary.
- vnfi = self._get_vnf_instance(instance_uuid, vnf_id)
- if vnfi is not None:
- self._vnf_reconfigure_network(vnfi, intf_name, ip_address)
- # add this vnf and interface to the E-LAN for tagging
- elan_vnf_list.append({'name': src_docker_name, 'interface': intf_name})
+ # re-configure the VNFs IP assignment and ensure that a new subnet is used for each E-LAN
+ # E-LAN relies on the learning switch capability of Ryu which has to be turned on in the topology
+ # (DCNetwork(controller=RemoteController, enable_learning=True)), so no explicit chaining is necessary.
+ vnfi = self._get_vnf_instance(instance_uuid, vnf_id)
+ if vnfi is not None:
+ self._vnf_reconfigure_network(vnfi, intf_name, ip_address)
+ # add this vnf and interface to the E-LAN for tagging
+ elan_vnf_list.append({'name': src_docker_name, 'interface': intf_name})
# install the VLAN tags for this E-LAN
GK.net.setLAN(elan_vnf_list)