X-Git-Url: https://osm.etsi.org/gitweb/?p=osm%2Fvim-emu.git;a=blobdiff_plain;f=src%2Femuvim%2Fapi%2Fsonata%2Fdummygatekeeper.py;h=f37d2ff6ed3c066750c4aa9451941af2dd598a32;hp=c0bf9f725858ebe8c08edb687ce9b46b8c9509f8;hb=0611b67dc5e39b0d276848823598a13fac9cb28c;hpb=15013851b654dc08e53f4767476081655e284a74 diff --git a/src/emuvim/api/sonata/dummygatekeeper.py b/src/emuvim/api/sonata/dummygatekeeper.py index c0bf9f7..f37d2ff 100755 --- a/src/emuvim/api/sonata/dummygatekeeper.py +++ b/src/emuvim/api/sonata/dummygatekeeper.py @@ -47,6 +47,8 @@ import pkg_resources from subprocess import Popen from random import randint import ipaddress +import copy +import time logging.basicConfig() LOG = logging.getLogger("sonata-dummy-gatekeeper") @@ -79,6 +81,9 @@ USE_DOCKER_MGMT = False # automatically deploy uploaded packages (no need to execute son-access deploy --latest separately) AUTO_DEPLOY = False +# and also automatically terminate any other running services +AUTO_DELETE = False + def generate_subnets(prefix, base, subnet_size=50, mask=24): # Generate a list of ipaddress in subnets r = list() @@ -94,6 +99,11 @@ ELAN_SUBNETS = generate_subnets('10.20', 0, subnet_size=50, mask=24) # 10.30.xxx.0/30 ELINE_SUBNETS = generate_subnets('10.30', 0, subnet_size=50, mask=30) +# 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): @@ -143,7 +153,7 @@ class Service(object): self.local_docker_files = dict() self.remote_docker_image_urls = dict() self.instances = dict() - self.vnf_name2docker_name = dict() + # dict to find the vnf_name for any vnf id self.vnf_id2vnf_name = dict() def onboard(self): @@ -159,11 +169,6 @@ class Service(object): self._load_vnfd() if DEPLOY_SAP: self._load_saps() - # create dict to translate vnf names - self.vnf_id2vnf_name = defaultdict(lambda: "NotExistingNode", - reduce(lambda x, y: dict(x, **y), - map(lambda d: {d["vnf_id"]: d["vnf_name"]}, - self.nsd["network_functions"]))) # 3. prepare container images (e.g. download or build Dockerfile) if BUILD_DOCKERFILE: self._load_docker_files() @@ -193,12 +198,12 @@ class Service(object): if not GK_STANDALONE_MODE: #self._calculate_placement(FirstDcPlacement) self._calculate_placement(RoundRobinDcPlacementWithSAPs) - # 3. start all vnfds that we have in the service (except SAPs) - for vnfd in self.vnfds.itervalues(): + for vnf_id in self.vnfds: + vnfd = self.vnfds[vnf_id] vnfi = None if not GK_STANDALONE_MODE: - vnfi = self._start_vnfd(vnfd) + vnfi = self._start_vnfd(vnfd, vnf_id) self.instances[instance_uuid]["vnf_instances"].append(vnfi) # 4. start all SAPs in the service @@ -206,7 +211,9 @@ class Service(object): 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"] @@ -241,9 +248,19 @@ class Service(object): # 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) + for sap_name in self.saps_ext: + ext_sap = self.saps[sap_name] + target_dc = ext_sap.get("dc") + target_dc.removeExternalSAP(sap_name) + LOG.info("Stopping the SAP instance: %r in DC %r" % (sap_name, target_dc)) + if not GK_STANDALONE_MODE: # remove placement? # self._remove_placement(RoundRobinPlacement) @@ -252,19 +269,22 @@ class Service(object): # last step: remove the instance from the list of all instances del self.instances[instance_uuid] - def _start_vnfd(self, vnfd): + def _start_vnfd(self, vnfd, vnf_id, **kwargs): """ Start a single VNFD of this service :param vnfd: vnfd descriptor dict + :param vnf_id: unique id of this vnf in the nsd :return: """ + # the vnf_name refers to the container image to be deployed + vnf_name = vnfd.get("name") + # iterate over all deployment units within each VNFDs for u in vnfd.get("virtual_deployment_units"): # 1. get the name of the docker image to start and the assigned DC - vnf_name = vnfd.get("name") - if vnf_name not in self.remote_docker_image_urls: - raise Exception("No image name for %r found. Abort." % vnf_name) - docker_name = self.remote_docker_image_urls.get(vnf_name) + if vnf_id not in self.remote_docker_image_urls: + raise Exception("No image name for %r found. Abort." % vnf_id) + docker_name = self.remote_docker_image_urls.get(vnf_id) target_dc = vnfd.get("dc") # 2. perform some checks to ensure we can start the container assert(docker_name is not None) @@ -275,7 +295,9 @@ class Service(object): # 3. get the resource limits res_req = u.get("resource_requirements") cpu_list = res_req.get("cpu").get("cores") - if not cpu_list or len(cpu_list)==0: + if cpu_list is None: + cpu_list = res_req.get("cpu").get("vcpus") + if cpu_list is None: cpu_list="1" cpu_bw = res_req.get("cpu").get("cpu_bw") if not cpu_bw: @@ -296,16 +318,10 @@ class Service(object): mem_lim = int(mem_limit) cpu_period, cpu_quota = self._calculate_cpu_cfs_values(float(cpu_bw)) - vnf_name2id = defaultdict(lambda: "NotExistingNode", - reduce(lambda x, y: dict(x, **y), - map(lambda d: {d["vnf_name"]: d["vnf_id"]}, - self.nsd["network_functions"]))) - # check if we need to deploy the management ports (defined as type:management both on in the vnfd and nsd) intfs = vnfd.get("connection_points", []) mgmt_intf_names = [] if USE_DOCKER_MGMT: - vnf_id = vnf_name2id[vnf_name] mgmt_intfs = [vnf_id + ':' + intf['id'] for intf in intfs if intf.get('type') == 'management'] # check if any of these management interfaces are used in a management-type network in the nsd for nsd_intf_name in mgmt_intfs: @@ -321,8 +337,8 @@ class Service(object): # 4. generate the volume paths for the docker container volumes=list() # a volume to extract log files - docker_log_path = "/tmp/results/%s/%s"%(self.uuid,vnf_name) - LOG.debug("LOG path for vnf %s is %s."%(vnf_name,docker_log_path)) + docker_log_path = "/tmp/results/%s/%s"%(self.uuid,vnf_id) + LOG.debug("LOG path for vnf %s is %s."%(vnf_id,docker_log_path)) if not os.path.exists(docker_log_path): LOG.debug("Creating folder %s"%docker_log_path) os.makedirs(docker_log_path) @@ -335,13 +351,10 @@ class Service(object): # TODO: get all vnf id's from the nsd for this vnfd and use those as dockername # use the vnf_id in the nsd as docker name # so deployed containers can be easily mapped back to the nsd - - self.vnf_name2docker_name[vnf_name] = vnf_name2id[vnf_name] - - LOG.info("Starting %r as %r in DC %r" % (vnf_name, self.vnf_name2docker_name[vnf_name], vnfd.get("dc"))) - LOG.debug("Interfaces for %r: %r" % (vnf_name, intfs)) + LOG.info("Starting %r as %r in DC %r" % (vnf_name, vnf_id, vnfd.get("dc"))) + LOG.debug("Interfaces for %r: %r" % (vnf_id, intfs)) vnfi = target_dc.startCompute( - self.vnf_name2docker_name[vnf_name], + vnf_id, network=intfs, image=docker_name, flavor_name="small", @@ -349,7 +362,8 @@ class Service(object): cpu_period=cpu_period, cpuset=cpu_list, mem_limit=mem_lim, - volumes=volumes) + volumes=volumes, + type=kwargs.get('type','docker')) # rename the docker0 interfaces (eth0) to the management port name defined in the VNFD if USE_DOCKER_MGMT: @@ -372,16 +386,14 @@ class Service(object): LOG.info("Stopping the vnf instance contained in %r in DC %r" % (status["name"], dc)) dc.stopCompute(status["name"]) - def _get_vnf_instance(self, instance_uuid, name): + def _get_vnf_instance(self, instance_uuid, vnf_id): """ - Returns the Docker object for the given VNF name (or Docker name). + Returns the Docker object for the given VNF id (or Docker name). :param instance_uuid: UUID of the service instance to search in. :param name: VNF name or Docker name. We are fuzzy here. :return: """ - dn = name - if name in self.vnf_name2docker_name: - dn = self.vnf_name2docker_name[name] + dn = vnf_id for vnfi in self.instances[instance_uuid]["vnf_instances"]: if vnfi.name == dn: return vnfi @@ -430,6 +442,21 @@ class Service(object): 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// @@ -459,6 +486,11 @@ class Service(object): make_relative_path(self.manifest.get("entry_service_template"))) self.nsd = load_yaml(nsd_path) GK.net.deployed_nsds.append(self.nsd) + # create dict to find the vnf_name for any vnf id + self.vnf_id2vnf_name = defaultdict(lambda: "NotExistingNode", + reduce(lambda x, y: dict(x, **y), + map(lambda d: {d["vnf_id"]: d["vnf_name"]}, + self.nsd["network_functions"]))) LOG.debug("Loaded NSD: %r" % self.nsd.get("name")) @@ -467,6 +499,9 @@ class Service(object): Load all VNFD YAML files referenced in MANIFEST.MF and keep them in dict. :return: """ + + # first make a list of all the vnfds in the package + vnfd_set = dict() if "package_content" in self.manifest: for pc in self.manifest.get("package_content"): if pc.get("content-type") == "application/sonata.function_descriptor": @@ -474,14 +509,17 @@ class Service(object): self.package_content_path, make_relative_path(pc.get("name"))) vnfd = load_yaml(vnfd_path) - self.vnfds[vnfd.get("name")] = vnfd - LOG.debug("Loaded VNFD: %r" % vnfd.get("name")) + vnfd_set[vnfd.get("name")] = vnfd + # then link each vnf_id in the nsd to its vnfd + for vnf_id in self.vnf_id2vnf_name: + vnf_name = self.vnf_id2vnf_name[vnf_id] + self.vnfds[vnf_id] = vnfd_set[vnf_name] + LOG.debug("Loaded VNFD: {0} id: {1}".format(vnf_name, vnf_id)) def _load_saps(self): # create list of all SAPs # check if we need to deploy management ports if USE_DOCKER_MGMT: - LOG.debug("nsd: {0}".format(self.nsd)) SAPs = [p for p in self.nsd["connection_points"] if 'management' not in p.get('type')] else: SAPs = [p for p in self.nsd["connection_points"]] @@ -498,14 +536,17 @@ class Service(object): sap_net = SAP_SUBNETS.pop(0) self.saps[sap_docker_name] = {"name": sap_docker_name , "type": "external", "net": sap_net} # add SAP vnf to list in the NSD so it is deployed later on - # each SAP get a unique VNFD and vnf_id in the NSD and custom type (only defined in the dummygatekeeper) + # each SAP gets a unique VNFD and vnf_id in the NSD and custom type (only defined in the dummygatekeeper) self.nsd["network_functions"].append( {"vnf_id": sap_docker_name, "vnf_name": sap_docker_name, "vnf_type": "sap_ext"}) # Each Service Access Point (connection_point) in the nsd is getting its own container (default) elif sap["type"] == "internal" or sap["type"] == "management": # add SAP to self.vnfds - sapfile = pkg_resources.resource_filename(__name__, "sap_vnfd.yml") + if SAP_VNFD is None: + sapfile = pkg_resources.resource_filename(__name__, "sap_vnfd.yml") + else: + sapfile = SAP_VNFD sap_vnfd = load_yaml(sapfile) sap_vnfd["connection_points"][0]["id"] = sap_interface sap_vnfd["name"] = sap_docker_name @@ -531,7 +572,7 @@ class Service(object): if sap["type"] == "internal": vnfi = None if not GK_STANDALONE_MODE: - vnfi = self._start_vnfd(sap) + vnfi = self._start_vnfd(sap, sap['name'], type='sap_int') self.instances[instance_uuid]["vnf_instances"].append(vnfi) elif sap["type"] == "external": @@ -568,9 +609,7 @@ class Service(object): src_id = src_sap_id # set intf name to None so the chaining function will choose the first one src_if_name = None - src_name = self.vnf_id2vnf_name[src_id] - dst_name = self.vnf_id2vnf_name[dst_id] - dst_vnfi = self._get_vnf_instance(instance_uuid, dst_name) + dst_vnfi = self._get_vnf_instance(instance_uuid, dst_id) if dst_vnfi is not None: # choose first ip address in sap subnet sap_net = self.saps[src_sap_id]['net'] @@ -582,9 +621,7 @@ class Service(object): dst_id = dst_sap_id # set intf name to None so the chaining function will choose the first one dst_if_name = None - src_name = self.vnf_id2vnf_name[src_id] - dst_name = self.vnf_id2vnf_name[dst_id] - src_vnfi = self._get_vnf_instance(instance_uuid, src_name) + src_vnfi = self._get_vnf_instance(instance_uuid, src_id) if src_vnfi is not None: sap_net = self.saps[dst_sap_id]['net'] sap_ip = "{0}/{1}".format(str(sap_net[2]), sap_net.prefixlen) @@ -598,11 +635,9 @@ class Service(object): src_id = src_sap_id if dst_sap_id in self.saps_int: dst_id = dst_sap_id - src_name = self.vnf_id2vnf_name[src_id] - dst_name = self.vnf_id2vnf_name[dst_id] # re-configure the VNFs IP assignment and ensure that a new subnet is used for each E-Link - src_vnfi = self._get_vnf_instance(instance_uuid, src_name) - dst_vnfi = self._get_vnf_instance(instance_uuid, dst_name) + src_vnfi = self._get_vnf_instance(instance_uuid, src_id) + dst_vnfi = self._get_vnf_instance(instance_uuid, dst_id) if src_vnfi is not None and dst_vnfi is not None: eline_net = ELINE_SUBNETS.pop(0) ip1 = "{0}/{1}".format(str(eline_net[1]), eline_net.prefixlen) @@ -618,8 +653,8 @@ class Service(object): vnf_src_interface=src_if_name, vnf_dst_interface=dst_if_name, bidirectional=BIDIRECTIONAL_CHAIN, cmd="add-flow", cookie=cookie, priority=10) LOG.debug( - "Setting up E-Line link. %s(%s:%s) -> %s(%s:%s)" % ( - src_name, src_id, src_if_name, dst_name, dst_id, dst_if_name)) + "Setting up E-Line link. (%s:%s) -> (%s:%s)" % ( + src_id, src_if_name, dst_id, dst_if_name)) def _connect_elans(self, elan_fwd_links, instance_uuid): @@ -665,20 +700,18 @@ class Service(object): src_docker_name = vnf_sap_id vnf_id = vnf_sap_id - vnf_name = self.vnf_id2vnf_name[vnf_id] LOG.debug( - "Setting up E-LAN interface. %s(%s:%s) -> %s" % ( - vnf_name, vnf_id, intf_name, ip_address)) - - if vnf_name 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_name) - 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}) + "Setting up E-LAN interface. (%s:%s) -> %s" % ( + vnf_id, intf_name, ip_address)) + + # 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) @@ -806,7 +839,7 @@ class Service(object): return int(cpu_period), int(cpu_quota) def check_ext_saps(self, intf_list): - # check if the list of interfacs contains an externl SAP + # check if the list of interfacs contains an external SAP saps_ext = [self.saps[sap]['name'] for sap in self.saps if self.saps[sap]["type"] == "external"] for intf_name in intf_list: vnf_id, vnf_interface, vnf_sap_docker_name = parse_interface(intf_name) @@ -829,7 +862,7 @@ class FirstDcPlacement(object): Placement: Always use one and the same data center from the GK.dcs dict. """ def place(self, nsd, vnfds, saps, dcs): - for name, vnfd in vnfds.iteritems(): + for id, vnfd in vnfds.iteritems(): vnfd["dc"] = list(dcs.itervalues())[0] @@ -840,7 +873,7 @@ class RoundRobinDcPlacement(object): def place(self, nsd, vnfds, saps, dcs): c = 0 dcs_list = list(dcs.itervalues()) - for name, vnfd in vnfds.iteritems(): + for id, vnfd in vnfds.iteritems(): vnfd["dc"] = dcs_list[c % len(dcs_list)] c += 1 # inc. c to use next DC @@ -854,7 +887,7 @@ class RoundRobinDcPlacementWithSAPs(object): # place vnfs c = 0 dcs_list = list(dcs.itervalues()) - for name, vnfd in vnfds.iteritems(): + for id, vnfd in vnfds.iteritems(): vnfd["dc"] = dcs_list[c % len(dcs_list)] c += 1 # inc. c to use next DC @@ -863,11 +896,6 @@ class RoundRobinDcPlacementWithSAPs(object): eline_fwd_links = [l for l in vlinks if (l["connectivity_type"] == "E-Line")] elan_fwd_links = [l for l in vlinks if (l["connectivity_type"] == "E-LAN")] - vnf_id2vnf_name = defaultdict(lambda: "NotExistingNode", - reduce(lambda x, y: dict(x, **y), - map(lambda d: {d["vnf_id"]: d["vnf_name"]}, - nsd["network_functions"]))) - # SAPs on E-Line links are placed on the same DC as the VNF on the E-Line for link in eline_fwd_links: src_id, src_if_name, src_sap_id = parse_interface(link["connection_points_reference"][0]) @@ -875,15 +903,13 @@ class RoundRobinDcPlacementWithSAPs(object): # check if there is a SAP in the link if src_sap_id in saps: - dst_vnf_name = vnf_id2vnf_name[dst_id] # get dc where connected vnf is mapped to - dc = vnfds[dst_vnf_name]['dc'] + dc = vnfds[dst_id]['dc'] saps[src_sap_id]['dc'] = dc if dst_sap_id in saps: - src_vnf_name = vnf_id2vnf_name[src_id] # get dc where connected vnf is mapped to - dc = vnfds[src_vnf_name]['dc'] + dc = vnfds[src_id]['dc'] saps[dst_sap_id]['dc'] = dc # SAPs on E-LANs are placed on a random DC @@ -938,6 +964,17 @@ class Packages(fr.Resource): with open(upload_path, 'wb') as f: f.write(son_file) size = os.path.getsize(upload_path) + + # first stop and delete any other running services + if AUTO_DELETE: + service_list = copy.copy(GK.services) + for service_uuid in service_list: + instances_list = copy.copy(GK.services[service_uuid].instances) + for instance_uuid in instances_list: + # valid service and instance UUID, stop service + GK.services.get(service_uuid).stop_service(instance_uuid) + LOG.info("service instance with uuid %r stopped." % instance_uuid) + # create a service object and register it s = Service(service_uuid, file_hash, upload_path) GK.register_service_package(service_uuid, s) @@ -945,6 +982,7 @@ class Packages(fr.Resource): # automatically deploy the service if AUTO_DEPLOY: # ok, we have a service uuid, lets start the service + reset_subnets() service_instance_uuid = GK.services.get(service_uuid).start_service() # generate the JSON result @@ -1106,6 +1144,18 @@ def parse_interface(interface_name): return vnf_id, vnf_interface, vnf_sap_docker_name +def reset_subnets(): + # private subnet definitions for the generated interfaces + # 10.10.xxx.0/24 + global SAP_SUBNETS + SAP_SUBNETS = generate_subnets('10.10', 0, subnet_size=50, mask=30) + # 10.20.xxx.0/30 + global ELAN_SUBNETS + ELAN_SUBNETS = generate_subnets('10.20', 0, subnet_size=50, mask=24) + # 10.30.xxx.0/30 + global ELINE_SUBNETS + ELINE_SUBNETS = generate_subnets('10.30', 0, subnet_size=50, mask=30) + if __name__ == '__main__': """ Lets allow to run the API in standalone mode.