X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=emuvim%2Fdcemulator%2Fnet.py;fp=emuvim%2Fdcemulator%2Fnet.py;h=8379cd3841f248fb71cfc9b73ddcec8e14c698c5;hb=c5a536a1796846be97e5ba6ce9c20d73b6fd0052;hp=7b238b8cdcff82d6f0951e50500ae6696ddd9348;hpb=a29c50cffd72de2f5533bb4f294adfe9a0f655d5;p=osm%2Fvim-emu.git

diff --git a/emuvim/dcemulator/net.py b/emuvim/dcemulator/net.py
index 7b238b8..8379cd3 100755
--- a/emuvim/dcemulator/net.py
+++ b/emuvim/dcemulator/net.py
@@ -9,6 +9,8 @@ from mininet.node import Controller, OVSKernelSwitch, Switch, Docker, Host
 from mininet.cli import CLI
 from mininet.log import setLogLevel, info
 from mininet.link import TCLink, Link
+import networkx as nx
+from monitoring import DCNetworkMonitor
 
 from node import Datacenter, EmulatorCompute
 
@@ -26,8 +28,15 @@ class DCNetwork(Dockernet):
         # create a Mininet/Dockernet network
         # call original Docker.__init__ and setup default controller
         Dockernet.__init__(
-            self, controller=Controller, switch=OVSKernelSwitch, **kwargs)
-        self.addController('c0')
+            self, controller=RemoteController, switch=OVSKernelSwitch, **kwargs)
+        #self.addController('c0')
+
+        # graph of the complete DC network
+        self.DCNetwork_graph=nx.DiGraph()
+
+        # monitoring agent
+        self.monitor_agent = DCNetworkMonitor(self)
+
 
     def addDatacenter(self, label, metadata={}):
         """
@@ -74,13 +83,37 @@ class DCNetwork(Dockernet):
             if not "ip" in params["params2"]:
                 params["params2"]["ip"] = self.getNextIp()
 
-        return Dockernet.addLink(self, node1, node2, **params)  # TODO we need TCLinks with user defined performance here
+        link = Dockernet.addLink(self, node1, node2, **params)  # TODO we need TCLinks with user defined performance here
+
+        # add edge and assigned port number to graph in both directions between node1 and node2
+        self.DCNetwork_graph.add_edge(node1.name, node2.name, \
+                                      {'src_port': node1.ports[link.intf1], 'dst_port': node2.ports[link.intf2]})
+        self.DCNetwork_graph.add_edge(node2.name, node1.name, \
+                                       {'src_port': node2.ports[link.intf2], 'dst_port': node1.ports[link.intf1]})
+
+        return link
 
     def addDocker( self, label, **params ):
         """
         Wrapper for addDocker method to use custom container class.
         """
-        return Dockernet.addDocker(self, label, cls=EmulatorCompute, **params)
+        self.DCNetwork_graph.add_node(name)
+        return Dockernet.addDocker(self, name, cls=EmulatorCompute, **params)
+
+    def removeDocker( self, name, **params ):
+        """
+        Wrapper for removeDocker method to update graph.
+        """
+        self.DCNetwork_graph.remove_node(name)
+        return Dockernet.removeDocker(self, name, **params)
+
+    def addSwitch( self, name, add_to_graph=True, **params ):
+        """
+        Wrapper for addSwitch method to store switch also in graph.
+        """
+        if add_to_graph:
+            self.DCNetwork_graph.add_node(name)
+        return Dockernet.addSwitch(self, name, protocols='OpenFlow10,OpenFlow12,OpenFlow13', **params)
 
     def getAllContainers(self):
         """
@@ -102,3 +135,46 @@ class DCNetwork(Dockernet):
 
     def CLI(self):
         CLI(self)
+
+    # to remove chain do setChain( src, dst, cmd='del-flows')
+    def setChain(self, vnf_src_name, vnf_dst_name, cmd='add-flow'):
+        # get shortest path
+        path = nx.shortest_path(self.DCNetwork_graph, vnf_src_name, vnf_dst_name)
+        logging.info("Path between {0} and {1}: {2}".format(vnf_src_name, vnf_dst_name, path))
+
+        current_hop = vnf_src_name
+        for i in range(0,len(path)):
+            next_hop = path[path.index(current_hop)+1]
+            next_node = self.getNodeByName(next_hop)
+
+            if next_hop == vnf_dst_name:
+                return 0
+            elif not isinstance( next_node, OVSSwitch ):
+                logging.info("Next node: {0} is not a switch".format(next_hop1))
+                return 0
+
+
+            switch_inport = self.DCNetwork_graph[current_hop][next_hop]['dst_port']
+            next2_hop = path[path.index(current_hop)+2]
+            switch_outport = self.DCNetwork_graph[next_hop][next2_hop]['src_port']
+
+            logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(next_node.name, switch_inport, switch_outport))
+            # set of entry via ovs-ofctl
+            # TODO use rest API of ryu to set flow entries to correct witch dpid
+            if isinstance( next_node, OVSSwitch ):
+                match = 'in_port=%s' % switch_inport
+
+                if cmd=='add-flow':
+                    action = 'action=%s' % switch_outport
+                    s = ','
+                    ofcmd = s.join([match,action])
+                elif cmd=='del-flows':
+                    ofcmd = match
+                else:
+                    ofcmd=''
+
+                next_node.dpctl(cmd, ofcmd)
+
+            current_hop = next_hop
+
+        return 1
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