olsr.py

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from gi.repository import Gtk
from gi.repository import Gdk
 
from visualizer.base import InformationWindow
 
 
class ShowOlsrRoutingTable(InformationWindow):
    
    (
        COLUMN_DESTINATION,
        COLUMN_NEXT_HOP,
        COLUMN_INTERFACE,
        COLUMN_NUM_HOPS,
    ) = range(4)
 
    def __init__(self, visualizer, node_index):
        """!
        Initializer
        @param self this object
        @param visualizer visualizer object
        @param node_index the node index
        """
        InformationWindow.__init__(self)
        self.win = Gtk.Dialog(parent=visualizer.window,
                              flags=Gtk.DialogFlags.DESTROY_WITH_PARENT,
                              buttons=("_Close", Gtk.ResponseType.CLOSE))
        self.win.set_default_size(Gdk.Screen.width()/2, Gdk.Screen.height()/2)
        self.win.connect("response", self._response_cb)
        self.win.set_title("OLSR routing table for node %i" % node_index)
        self.visualizer = visualizer
        self.node_index = node_index
 
        self.table_model = Gtk.ListStore(str, str, str, int)
 
        treeview = Gtk.TreeView(self.table_model)
        treeview.show()
        sw = Gtk.ScrolledWindow()
        sw.set_properties(hscrollbar_policy=Gtk.PolicyType.AUTOMATIC,
                          vscrollbar_policy=Gtk.PolicyType.AUTOMATIC)
        sw.show()
        sw.add(treeview)
        self.win.vbox.add(sw)
 
        # Dest.
        column = Gtk.TreeViewColumn('Destination', Gtk.CellRendererText(),
                                    text=self.COLUMN_DESTINATION)
        treeview.append_column(column)
 
        # Next hop
        column = Gtk.TreeViewColumn('Next hop', Gtk.CellRendererText(),
                                    text=self.COLUMN_NEXT_HOP)
        treeview.append_column(column)
 
        # Interface
        column = Gtk.TreeViewColumn('Interface', Gtk.CellRendererText(),
                                    text=self.COLUMN_INTERFACE)
        treeview.append_column(column)
 
        # Num. Hops
        column = Gtk.TreeViewColumn('Num. Hops', Gtk.CellRendererText(),
                                    text=self.COLUMN_NUM_HOPS)
        treeview.append_column(column)
 
        self.visualizer.add_information_window(self)
        self.win.show()
 
    def _response_cb(self, win, response):
        """!
        Initializer
        @param self this object
        @param win the window
        @param response the response
        @return none
        """
        self.win.destroy()
        self.visualizer.remove_information_window(self)
 
    def update(self):
        """!
        Update function
        @param self this object
        @return none
        """
        node = ns.NodeList.GetNode(self.node_index)
        ipv4 = node.GetObject(ns.Ipv4.GetTypeId())
        if not ns.cppyy.gbl.hasOlsr(ns3_node):
            return
        olsr = ns.cppyy.gbl.getNodeOlsr(node)
 
        self.table_model.clear()
        for route in olsr.GetRoutingTableEntries():
            tree_iter = self.table_model.append()
            netdevice = ipv4.GetNetDevice(route.interface)
            if netdevice is None:
                interface_name = 'lo'
            else:
                interface_name = ns.Names.FindName(netdevice)
                if not interface_name:
                    interface_name = "(interface %i)" % route.interface
            self.table_model.set(tree_iter,
                                 self.COLUMN_DESTINATION, str(route.destAddr),
                                 self.COLUMN_NEXT_HOP, str(route.nextAddr),
                                 self.COLUMN_INTERFACE, interface_name,
                                 self.COLUMN_NUM_HOPS, route.distance)
 
 
def populate_node_menu(viz, node, menu):
    ns3_node = ns.NodeList.GetNode(node.node_index)
    if not ns.cppyy.gbl.hasOlsr(ns3_node):
        print("No OLSR")
        return
 
    menu_item = Gtk.MenuItem("Show OLSR Routing Table")
    menu_item.show()
 
    def _show_ipv4_routing_table(dummy_menu_item):
        ShowOlsrRoutingTable(viz, node.node_index)
 
    menu_item.connect("activate", _show_ipv4_routing_table)
    menu.add(menu_item)
 
def register(viz):
    viz.connect("populate-node-menu", populate_node_menu)