--- /dev/null
+#!/bin/python
+
+#
+# Copyright 2016 RIFT.IO Inc
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+
+import gi
+gi.require_version('RwYang', '1.0')
+from gi.repository import IetfL2TopologyYang as l2Tl
+from gi.repository import RwTopologyYang as RwTl
+from gi.repository import RwYang
+from xml.etree import ElementTree as etree
+import subprocess
+import logging
+
+from create_stackedl2topology import MyL2Network
+from create_stackedl2topology import MyL2Topology
+from create_stackedProvNettopology import MyProvNetwork
+from create_stackedProvNettopology import MyProvTopology
+from create_stackedVMNettopology import MyVMNetwork
+from create_stackedVMNettopology import MyVMTopology
+
+
+class MyNwNotFound(Exception):
+ pass
+
+class MyNodeNotFound(Exception):
+ pass
+
+class MyTpNotFound(Exception):
+ pass
+
+class MySfcNetwork(object):
+ def __init__(self, nwtop, l2top, provtop, vmtop, log):
+ self.next_mac = 81
+ self.log = log
+ self.sfcnet1 = nwtop.network.add()
+ self.sfcnet1.network_id = "SfcNetwork-1"
+
+ self.l2top = l2top
+ self.provtop = provtop
+ self.vmtop = vmtop
+
+ # L2 Network type augmentation
+ self.sfcnet1.network_types.l2_network = self.sfcnet1.network_types.l2_network.new()
+ # L2 Network augmentation
+ self.sfcnet1.l2_network_attributes.name = "Rift LAB SFC-Demo SFC Network"
+ try:
+ self.l2netid = l2top.find_nw_id("L2HostNetwork-1")
+ except TypeError:
+ raise MyNwNotFound()
+ ul_net = self.sfcnet1.supporting_network.add()
+ try:
+ ul_net.network_ref = provtop.find_nw_id("ProviderNetwork-1")
+ self.provnetid = ul_net.network_ref
+ except TypeError:
+ raise MyNwNotFound()
+ ul_net = self.sfcnet1.supporting_network.add()
+ try:
+ ul_net.network_ref = vmtop.find_nw_id("VmNetwork-1")
+ self.vmnetid = ul_net.network_ref
+ except TypeError:
+ raise MyNwNotFound()
+
+ def get_nw_id(self, nw_name):
+ for nw in self.nwtop.network:
+ if (nw.network_id == nw_name):
+ return nw.network_id
+
+ def get_node(self, node_name):
+ _node_id = "urn:Rift:Lab:" + node_name
+ for node in self.sfcnet1.node:
+ if (node.node_id == _node_id):
+ return node
+
+ def get_tp(self, node, tp_name):
+ _tp_id = "urn:Rift:Lab:" + node.node_id + "_" + tp_name
+ for tp in node.termination_point :
+ if (tp.tp_id == _tp_id):
+ return tp
+
+ def get_link(self, link_name):
+ for link in nw.link :
+ if (link.l2_link_attributes.name == link_name):
+ return link
+
+ def create_node(self, node_name, description, mgmt_ip_addr = None, sup_node = None, nw_ref = None):
+ logging.debug("Creating node %s", node_name)
+ node = self.sfcnet1.node.add()
+ node.node_id = "urn:Rift:Lab:" + node_name
+ # L2 Node augmentation
+ node.l2_node_attributes.name = node_name
+ node.l2_node_attributes.description = description
+ if (mgmt_ip_addr is not None):
+ node.l2_node_attributes.management_address.append(mgmt_ip_addr)
+ if (sup_node is not None):
+ logging.debug(" Adding support node %s", sup_node.node_id)
+ ul_node = node.supporting_node.add()
+ if (nw_ref is not None):
+ ul_node.network_ref = nw_ref
+ else:
+ ul_node.network_ref = self.l2netid
+ ul_node.node_ref = sup_node.node_id
+ return node
+
+ def create_tp(self, node, cfg_tp, sup_node = None, sup_tp = None, nw_ref = None):
+ logging.debug(" Creating termination point %s %s", node.l2_node_attributes.name, cfg_tp)
+ tp = node.termination_point.add()
+ tp.tp_id = ("{}:{}").format(node.node_id, cfg_tp)
+ # L2 TP augmentation
+ tp.l2_termination_point_attributes.description = cfg_tp
+ tp.l2_termination_point_attributes.maximum_frame_size = 1500
+ #tp.l2_termination_point_attributes.mac_address = "00:5e:8a:ab:dd:" + str(self.next_mac)
+ #self.next_mac = self.next_mac + 1
+ tp.l2_termination_point_attributes.eth_encapsulation = "l2t:vxlan"
+ if ((sup_tp is not None) and (sup_node is not None)):
+ logging.debug(" Adding support terminaton point %s", sup_tp.tp_id)
+ ul_tp = tp.supporting_termination_point.add()
+ if (nw_ref is not None):
+ ul_tp.network_ref = nw_ref
+ else:
+ ul_tp.network_ref = self.l2netid
+ ul_tp.node_ref = sup_node.node_id
+ ul_tp.tp_ref = sup_tp.tp_id
+ return tp
+
+ def create_link(self, node1, tp1, node2, tp2, link_name1, link_name2 = None):
+ logging.debug("Creating links %s %s", link_name1, link_name2)
+ lnk1= self.sfcnet1.link.add()
+ lnk1.link_id = "urn:Rift:Lab:Ethernet:{}{}_{}{}".format(node1.l2_node_attributes.name, tp1.l2_termination_point_attributes.description, node2.l2_node_attributes.name, tp2.l2_termination_point_attributes.description)
+ lnk1.source.source_node = node1.node_id
+ lnk1.source.source_tp = tp1.tp_id
+ lnk1.destination.dest_node = node2.node_id
+ lnk1.destination.dest_tp = tp2.tp_id
+ # L2 link augmentation
+ lnk1.l2_link_attributes.name = link_name1
+ lnk1.l2_link_attributes.rate = 1000000000.00
+
+ # Create bidir link if second link is provided
+ if (link_name2 is not None):
+ lnk2= self.sfcnet1.link.add()
+ lnk2.link_id = "urn:Rift:Lab:Ethernet:{}{}_{}{}".format(node2.l2_node_attributes.name, tp2.l2_termination_point_attributes.description, node1.l2_node_attributes.name, tp1.l2_termination_point_attributes.description)
+ lnk2.source.source_node = node2.node_id
+ lnk2.source.source_tp = tp2.tp_id
+ lnk2.destination.dest_node = node1.node_id
+ lnk2.destination.dest_tp = tp1.tp_id
+ # L2 link augmentation
+ lnk2.l2_link_attributes.name = link_name2
+ lnk2.l2_link_attributes.rate = 1000000000.00
+
+
+class MySfcTopology(MySfcNetwork):
+ def __init__(self, nwtop, l2top, provtop, vmnet, log):
+ super(MySfcTopology, self).__init__(nwtop, l2top, provtop, vmnet, log)
+
+ def find_nw_id(self, nw_name):
+ return self.get_nw_id(nw_name)
+
+ def find_node(self, node_name):
+ return self.get_node(node_name)
+
+ def find_tp(self, node, tp_name):
+ return self.get_tp(node, tp_name)
+
+ def find_link(self, link_name):
+ return self.get_link(link_name)
+
+ def setup_nodes(self):
+ logging.debug("Setting up nodes")
+
+ self.tg_node = self.vmtop.find_node("Trafgen_VM")
+ if (self.tg_node is None):
+ raise MyNodeNotFound()
+ self.lb_node = self.vmtop.find_node("LB_VM")
+ if (self.lb_node is None):
+ raise MyNodeNotFound()
+
+ self.g44_br_int_node = self.provtop.find_node("G44_Br_Int")
+ if (self.g44_br_int_node is None):
+ raise MyNodeNotFound()
+
+ self.sf1 = self.create_node("SF1","SF on LB VM", sup_node = self.lb_node, nw_ref = self.vmnetid)
+ self.sfc1 = self.create_node("SFC1","SF classifier on Trafgen VM", sup_node = self.tg_node, nw_ref = self.vmnetid)
+ self.sff1 = self.create_node("SFF1","SF forwarder on Grunt44 OVS integration bridge", mgmt_ip_addr="10.66.4.44", sup_node = self.g44_br_int_node, nw_ref = self.provnetid)
+
+ def setup_tps(self):
+ logging.debug("Setting up termination points")
+ # FInd L2 hosts
+ #self.g44_e2 = self.l2top.find_tp(self.g44_node, "eth2")
+ #if (self.g44_e2 is None):
+ # raise MyTpNotFound()
+
+ self.sfc1_vxlannsh1 = self.create_tp(self.sfc1, "vxlannsh1")
+ self.sf1_vxlannsh1 = self.create_tp(self.sf1, "vxlannsh1")
+ self.sff1_vxlannsh1 = self.create_tp(self.sff1, "vxlannsh1")
+
+
+ def setup_links(self):
+ # Add links to sfcnet1 network
+ # These links are unidirectional and point-to-point
+ logging.debug("Setting up links")
+ # Bidir Links for OVS bridges
+ self.create_link(self.sfc1, self.sfc1_vxlannsh1, self.sff1, self.sff1_vxlannsh1, "Link_sfc1_sff1")
+ self.create_link(self.sfc1, self.sfc1_vxlannsh1, self.sf1, self.sf1_vxlannsh1, "Link_sff1_sf1", "Link_sf1_sff1")
+
+ def setup_all(self):
+ self.setup_nodes()
+ self.setup_tps()
+ #self.setup_links()
+
+
+if __name__ == "__main__":
+ model = RwYang.Model.create_libncx()
+ model.load_schema_ypbc(RwTl.get_schema())
+ # create logger
+ logger = logging.getLogger('SFC Network Topology')
+ logger.setLevel(logging.DEBUG)
+ logging.basicConfig(level=logging.DEBUG)
+
+ logger.info('Creating an instance of SFC Network Topology')
+
+ nwtop = RwTl.YangData_IetfNetwork()
+
+ # Setup L2 topology
+ l2top = MyL2Topology(nwtop, logger)
+ l2top.setup_all()
+
+ # Setup Provider network topology
+ provtop = MyProvTopology(nwtop, l2top, logger)
+ provtop.setup_all()
+
+ # Setup VM network topology
+ vmtop = MyVMTopology(nwtop, l2top, provtop, logger)
+ vmtop.setup_all()
+
+ # Setup SFC network topology
+ sfctop = MySfcTopology(nwtop, l2top, provtop, vmtop, logger)
+ sfctop.setup_all()
+
+ print ("Converting to XML")
+ # Convert l2nw network to XML
+ xml_str = nwtop.to_xml_v2(model)
+ tree = etree.XML(xml_str)
+ xml_file = "/tmp/stacked_sfctop.xml"
+ xml_formatted_file = "/tmp/stacked_sfctop2.xml"
+ with open(xml_file, "w") as f:
+ f.write(xml_str)
+ status = subprocess.call("xmllint --format " + xml_file + " > " + xml_formatted_file, shell=True)
+
+ status = subprocess.call("sed -i '/xml version/d' " + xml_formatted_file, shell=True)
+ status = subprocess.call("sed -i '/root xmlns/d' " + xml_formatted_file, shell=True)
+ status = subprocess.call("sed -i '/\/root/d' " + xml_formatted_file, shell=True)
+
+ print ("Converting to JSON ")
+ # Convert set of topologies to JSON
+ json_str = nwtop.to_json(model)
+ with open("/tmp/stacked_sfctop.json", "w") as f:
+ f.write(json_str)
+ status = subprocess.call("python -m json.tool /tmp/stacked_sfctop.json > /tmp/stacked_sfctop2.json", shell=True)
+ json_formatted_file = "/tmp/stacked_sfctop2.json"
+ status = subprocess.call("sed -i -e 's/\"l2t:ethernet\"/\"ethernet\"/g' " + json_formatted_file, shell=True)
+ status = subprocess.call("sed -i -e 's/\"l2t:vlan\"/\"vlan\"/g' " + json_formatted_file, shell=True)
+ status = subprocess.call("sed -i -e 's/\"l2t:vxlan\"/\"vxlan\"/g' " + json_formatted_file, shell=True)
+
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