X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Fdcemulator%2Fnode.py;h=18febb43e6dc9eb6428a962b782f1ef5f77341ea;hb=17b6e881a3813e6f1f99100ed384f974eaff36a3;hp=5cfc9efff545bbfec151ba54084d59c2a675be71;hpb=1816508dbd9beb79e81fcc0bedb60ef7de2a151e;p=osm%2Fvim-emu.git diff --git a/src/emuvim/dcemulator/node.py b/src/emuvim/dcemulator/node.py index 5cfc9ef..18febb4 100755 --- a/src/emuvim/dcemulator/node.py +++ b/src/emuvim/dcemulator/node.py @@ -25,18 +25,18 @@ the Horizon 2020 and 5G-PPP programmes. The authors would like to acknowledge the contributions of their colleagues of the SONATA partner consortium (www.sonata-nfv.eu). """ -from mininet.node import Docker +from mininet.node import Docker, OVSBridge from mininet.link import Link from emuvim.dcemulator.resourcemodel import NotEnoughResourcesAvailable import logging -import time -import json + LOG = logging.getLogger("dcemulator.node") LOG.setLevel(logging.DEBUG) DCDPID_BASE = 1000 # start of switch dpid's used for data center switches +EXTSAPDPID_BASE = 2000 # start of switch dpid's used for external SAP switches class EmulatorCompute(Docker): """ @@ -67,7 +67,7 @@ class EmulatorCompute(Docker): vnf_interface = str(i) dc_port_name = self.datacenter.net.find_connected_dc_interface(vnf_name, vnf_interface) # format list of tuples (name, Ip, MAC, isUp, status, dc_portname) - intf_dict = {'intf_name': str(i), 'ip': i.IP(), 'mac': i.MAC(), 'up': i.isUp(), 'status': i.status(), 'dc_portname': dc_port_name} + intf_dict = {'intf_name': str(i), 'ip': "{0}/{1}".format(i.IP(), i.prefixLen), 'netmask': i.prefixLen, 'mac': i.MAC(), 'up': i.isUp(), 'status': i.status(), 'dc_portname': dc_port_name} networkStatusList.append(intf_dict) return networkStatusList @@ -98,6 +98,62 @@ class EmulatorCompute(Docker): return status +class EmulatorExtSAP(object): + """ + Emulator specific class that defines an external service access point (SAP) for the service. + Inherits from Containernet's OVSBridge class. + Represents a single OVS switch connected to a (logical) + data center. + We can add emulator specific helper functions to it. + """ + + def __init__(self, sap_name, sap_net, datacenter, **kwargs): + + self.datacenter = datacenter # pointer to current DC + self.net = self.datacenter.net + self.name = sap_name + + LOG.debug("Starting ext SAP instance %r in data center %r" % (sap_name, str(self.datacenter))) + + # create SAP as separate OVS switch with an assigned ip address + self.ip = str(sap_net[1]) + '/' + str(sap_net.prefixlen) + self.subnet = sap_net + # allow connection to the external internet through the host + params = dict(NAT=True) + self.switch = self.net.addExtSAP(sap_name, self.ip, dpid=hex(self._get_next_extSAP_dpid())[2:], **params) + self.switch.start() + + def _get_next_extSAP_dpid(self): + global EXTSAPDPID_BASE + EXTSAPDPID_BASE += 1 + return EXTSAPDPID_BASE + + def getNetworkStatus(self): + """ + Helper method to receive information about the virtual networks + this compute instance is connected to. + """ + # get all links and find dc switch interface + networkStatusList = [] + for i in self.switch.intfList(): + vnf_name = self.name + vnf_interface = str(i) + if vnf_interface == 'lo': + continue + dc_port_name = self.datacenter.net.find_connected_dc_interface(vnf_name, vnf_interface) + # format list of tuples (name, Ip, MAC, isUp, status, dc_portname) + intf_dict = {'intf_name': str(i), 'ip': self.ip, 'netmask': i.prefixLen, 'mac': i.MAC(), 'up': i.isUp(), 'status': i.status(), 'dc_portname': dc_port_name} + networkStatusList.append(intf_dict) + + return networkStatusList + + def getStatus(self): + return { + "name": self.switch.name, + "datacenter": self.datacenter.name, + "network": self.getNetworkStatus() + } + class Datacenter(object): """ Represents a logical data center to which compute resources @@ -124,6 +180,8 @@ class Datacenter(object): self.switch = None # keep track of running containers self.containers = {} + # keep track of attached external access points + self.extSAPs = {} # pointer to assigned resource model self._resource_model = None @@ -218,6 +276,7 @@ class Datacenter(object): self.net.addLink(d, self.switch, params1=nw, cls=Link, intfName1=nw.get('id')) # do bookkeeping self.containers[name] = d + return d # we might use UUIDs for naming later on def stopCompute(self, name): @@ -248,23 +307,19 @@ class Datacenter(object): return True - def attachExternalSAP(self, sap_name, sap_ip): - # create SAP as OVS internal interface - sap_intf = self.switch.attachInternalIntf(sap_name, sap_ip) - - # add this as a link to the DCnetwork graph, so it is available for routing - attr_dict2 = {'src_port_id': sap_name, 'src_port_nr': None, - 'src_port_name': sap_name, - 'dst_port_id': self.switch.ports[sap_intf], 'dst_port_nr': self.switch.ports[sap_intf], - 'dst_port_name': sap_intf.name} - self.net.DCNetwork_graph.add_edge(sap_name, self.switch.name, attr_dict=attr_dict2) - - attr_dict2 = {'dst_port_id': sap_name, 'dst_port_nr': None, - 'dst_port_name': sap_name, - 'src_port_id': self.switch.ports[sap_intf], 'src_port_nr': self.switch.ports[sap_intf], - 'src_port_name': sap_intf.name} - self.net.DCNetwork_graph.add_edge(self.switch.name, sap_name, attr_dict=attr_dict2) + def attachExternalSAP(self, sap_name, sap_net, **params): + extSAP = EmulatorExtSAP(sap_name, sap_net, self, **params) + # link SAP to the DC switch + self.net.addLink(extSAP.switch, self.switch, cls=Link) + self.extSAPs[sap_name] = extSAP + def removeExternalSAP(self, sap_name): + sap_switch = self.extSAPs[sap_name].switch + #sap_switch = self.net.getNodeByName(sap_name) + # remove link of SAP to the DC switch + self.net.removeLink(link=None, node1=sap_switch, node2=self.switch) + self.net.removeExtSAP(sap_name) + del self.extSAPs[sap_name] def listCompute(self): """ @@ -273,16 +328,27 @@ class Datacenter(object): """ return list(self.containers.itervalues()) + def listExtSAPs(self): + """ + Return a list of all external SAPs assigned to this + data center. + """ + return list(self.extSAPs.itervalues()) + def getStatus(self): """ Return a dict with status information about this DC. """ + container_list = [name for name in self.containers] + ext_saplist = [sap_name for sap_name in self.extSAPs] return { "label": self.label, "internalname": self.name, "switch": self.switch.name, "n_running_containers": len(self.containers), - "metadata": self.metadata + "metadata": self.metadata, + "vnf_list" : container_list, + "ext SAP list" : ext_saplist } def assignResourceModel(self, rm):