X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Fapi%2Fsonata%2Fdummygatekeeper.py;h=735860c9028f8ce66ad33ea15910d545e2878125;hb=becc7c55f44225979dc706d1e7c3dfc8748cf1c7;hp=7ae3522d6a5ea8e71ad5107a7fa06c3f3116f830;hpb=f90c1f70bbb59ab940dd7698f784594b0927baaf;p=osm%2Fvim-emu.git diff --git a/src/emuvim/api/sonata/dummygatekeeper.py b/src/emuvim/api/sonata/dummygatekeeper.py index 7ae3522..735860c 100755 --- a/src/emuvim/api/sonata/dummygatekeeper.py +++ b/src/emuvim/api/sonata/dummygatekeeper.py @@ -64,13 +64,18 @@ GK_STANDALONE_MODE = False FORCE_PULL = False # Automatically deploy SAPs (endpoints) of the service as new containers +# Attention: This is not a configuration switch but a global variable! Don't change its default value. DEPLOY_SAP = False +# flag to indicate if we use bidirectional forwarding rules in the automatic chaining process +BIDIRECTIONAL_CHAIN = False + class Gatekeeper(object): def __init__(self): self.services = dict() self.dcs = dict() + self.net = None self.vnf_counter = 0 # used to generate short names for VNFs (Mininet limitation) LOG.info("Create SONATA dummy gatekeeper.") @@ -116,7 +121,6 @@ class Service(object): self.eline_subnets_src = generate_subnet_strings(50, start=200, subnet_size=24, ip=1) self.eline_subnets_dst = generate_subnet_strings(50, start=200, subnet_size=24, ip=2) - def onboard(self): """ Do all steps to prepare this service to be instantiated @@ -163,7 +167,8 @@ class Service(object): # 3. compute placement of this service instance (adds DC names to VNFDs) if not GK_STANDALONE_MODE: - self._calculate_placement(FirstDcPlacement) + #self._calculate_placement(FirstDcPlacement) + self._calculate_placement(RoundRobinDcPlacement) # iterate over all vnfds that we have to start for vnfd in self.vnfds.itervalues(): vnfi = None @@ -176,6 +181,9 @@ class Service(object): eline_fwd_links = [l for l in vlinks if (l["id"] in fwd_links) and (l["connectivity_type"] == "E-Line")] elan_fwd_links = [l for l in vlinks if (l["id"] in fwd_links) and (l["connectivity_type"] == "E-LAN")] + GK.net.deployed_elines.extend(eline_fwd_links) + GK.net.deployed_elans.extend(elan_fwd_links) + # 4a. deploy E-Line links # cookie is used as identifier for the flowrules installed by the dummygatekeeper # eg. different services get a unique cookie for their flowrules @@ -210,7 +218,7 @@ class Service(object): ret = network.setChain( src_docker_name, dst_docker_name, vnf_src_interface=src_if_name, vnf_dst_interface=dst_if_name, - bidirectional=True, cmd="add-flow", cookie=cookie, priority=10) + bidirectional=BIDIRECTIONAL_CHAIN, cmd="add-flow", cookie=cookie, priority=10) # 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) @@ -223,6 +231,9 @@ class Service(object): # 4b. deploy E-LAN links base = 10 for link in elan_fwd_links: + + elan_vnf_list=[] + # generate lan ip address ip = 1 for intf in link["connection_points_reference"]: @@ -231,6 +242,8 @@ class Service(object): if vnf_id in self.sap_identifiers: src_docker_name = "{0}_{1}".format(vnf_id, intf_name) vnf_id = src_docker_name + else: + src_docker_name = vnf_id vnf_name = vnf_id2vnf_name[vnf_id] LOG.debug( "Setting up E-LAN link. %s(%s:%s) -> %s" % ( @@ -238,13 +251,21 @@ class Service(object): 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 the infrastructure switch in dockernet, - # so no explicit chaining is necessary + # 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) # increase for the next ip address on this E-LAN ip += 1 + + # add this vnf and interface to the E-LAN for tagging + network = self.vnfds[vnf_name].get("dc").net # there should be a cleaner way to find the DCNetwork + elan_vnf_list.append({'name':src_docker_name,'interface':intf_name}) + + + # install the VLAN tags for this E-LAN + network.setLAN(elan_vnf_list) # increase the base ip address for the next E-LAN base += 1 @@ -367,6 +388,7 @@ class Service(object): self.package_content_path, make_relative_path(self.manifest.get("entry_service_template"))) self.nsd = load_yaml(nsd_path) + GK.net.deployed_nsds.append(self.nsd) LOG.debug("Loaded NSD: %r" % self.nsd.get("name")) def _load_vnfd(self): @@ -393,7 +415,7 @@ class Service(object): # set of the connection_point ids found in the nsd (in the examples this is 'ns') self.sap_identifiers.add(sap_vnf_id) - sap_docker_name = sap.replace(':', '_') + sap_docker_name = "%s_%s" % (sap_vnf_id, sap_vnf_interface) # add SAP to self.vnfds sapfile = pkg_resources.resource_filename(__name__, "sap_vnfd.yml") @@ -501,6 +523,20 @@ class FirstDcPlacement(object): vnfd["dc"] = list(dcs.itervalues())[0] +class RoundRobinDcPlacement(object): + """ + Placement: Distribute VNFs across all available DCs in a round robin fashion. + """ + def place(self, nsd, vnfds, dcs): + c = 0 + dcs_list = list(dcs.itervalues()) + for name, vnfd in vnfds.iteritems(): + vnfd["dc"] = dcs_list[c % len(dcs_list)] + c += 1 # inc. c to use next DC + + + + """ Resource definitions and API endpoints """ @@ -538,7 +574,7 @@ class Packages(fr.Resource): s = Service(service_uuid, file_hash, upload_path) GK.register_service_package(service_uuid, s) # generate the JSON result - return {"service_uuid": service_uuid, "size": size, "sha1": file_hash, "error": None} + return {"service_uuid": service_uuid, "size": size, "sha1": file_hash, "error": None}, 201 except Exception as ex: LOG.exception("Service package upload failed:") return {"service_uuid": None, "size": 0, "sha1": None, "error": "upload failed"}, 500 @@ -598,6 +634,7 @@ api.add_resource(Instantiations, '/instantiations') def start_rest_api(host, port, datacenters=dict()): GK.dcs = datacenters + GK.net = get_dc_network() # start the Flask server (not the best performance but ok for our use case) app.run(host=host, port=port, @@ -646,6 +683,14 @@ def generate_subnet_strings(n, start=1, subnet_size=24, ip=0): r.append("%d.0.0.%d/%d" % (i, ip, subnet_size)) return r +def get_dc_network(): + """ + retrieve the DCnetwork where this dummygatekeeper (GK) connects to. + Assume at least 1 datacenter is connected to this GK, and that all datacenters belong to the same DCNetwork + :return: + """ + assert (len(GK.dcs) > 0) + return GK.dcs.values()[0].net if __name__ == '__main__': """