+
+ # 3. Configure the chaining of the network functions (currently only E-Line links supported)
+ nfid2name = defaultdict(lambda :"NotExistingNode",
+ reduce(lambda x,y: dict(x, **y),
+ map(lambda d:{d["vnf_id"]:d["vnf_name"]},
+ self.nsd["network_functions"])))
+
+ vlinks = self.nsd["virtual_links"]
+ fwd_links = self.nsd["forwarding_graphs"][0]["constituent_virtual_links"]
+ eline_fwd_links = [l for l in vlinks if (l["id"] in fwd_links) and (l["connectivity_type"] == "E-Line")]
+
+ cookie = 1 # not clear why this is needed - to check with Steven
+ for link in eline_fwd_links:
+ src_node, src_port = link["connection_points_reference"][0].split(":")
+ dst_node, dst_port = link["connection_points_reference"][1].split(":")
+
+ srcname = nfid2name[src_node]
+ dstname = nfid2name[dst_node]
+ LOG.debug("src name: "+srcname+" dst name: "+dstname)
+
+ if (srcname in self.vnfds) and (dstname in self.vnfds) :
+ network = self.vnfds[srcname].get("dc").net # there should be a cleaner way to find the DCNetwork
+ src_vnf = self.vnfname2num[srcname]
+ dst_vnf = self.vnfname2num[dstname]
+ ret = network.setChain(src_vnf, dst_vnf, vnf_src_interface=src_port, vnf_dst_interface=dst_port, bidirectional = True, cmd="add-flow", cookie = cookie)
+ cookie += 1
+
+ # 4. run the emulator specific entrypoint scripts in the VNFIs of this service instance
+ self._trigger_emulator_start_scripts_in_vnfis(self.instances[instance_uuid]["vnf_instances"])
+