Exemplo n.º 1
0
    def handlenodemsg(self, msg):
        ''' Determine and return the servers to which this node message should
            be forwarded. Also keep track of link-layer nodes and the mapping of
            nodes to servers.
        '''
        serverlist = []
        handle_locally = False
        serverfiletxt = None
        # snoop Node Message for emulation server TLV and record mapping
        n = msg.tlvdata[coreapi.CORE_TLV_NODE_NUMBER]
        # replicate link-layer nodes on all servers
        nodetype = msg.gettlv(coreapi.CORE_TLV_NODE_TYPE)
        if nodetype is not None:
            try:
                nodecls = coreapi.node_class(nodetype)
            except KeyError:
                self.session.warn("broker invalid node type %s" % nodetype)
                return (False, serverlist)
            if nodecls is None:
                self.session.warn("broker unimplemented node type %s" %
                                  nodetype)
                return (False, serverlist)
            if issubclass(nodecls, PyCoreNet) and \
                nodetype != coreapi.CORE_NODE_WLAN:
                # network node replicated on all servers; could be optimized
                # don't replicate WLANs, because ebtables rules won't work
                serverlist = self.getserverlist()
                handle_locally = True
                self.addnet(n)
                for server in serverlist:
                    self.addnodemap(server, n)
                # do not record server name for networks since network
                # nodes are replicated across all server
                return (handle_locally, serverlist)
            if issubclass(nodecls, PyCoreNet) and \
                nodetype == coreapi.CORE_NODE_WLAN:
                # special case where remote WLANs not in session._objs, and no
                # node response message received, so they are counted here
                if msg.gettlv(coreapi.CORE_TLV_NODE_EMUSRV) is not None:
                    self.incrbootcount()
            elif issubclass(nodecls, PyCoreNode):
                name = msg.gettlv(coreapi.CORE_TLV_NODE_NAME)
                if name:
                    serverfiletxt = "%s %s %s" % (n, name, nodecls)
                if issubclass(nodecls, PhysicalNode):
                    # remember physical nodes
                    self.addphys(n)

        # emulation server TLV specifies server
        server = msg.gettlv(coreapi.CORE_TLV_NODE_EMUSRV)
        if server is not None:
            self.addnodemap(server, n)
            if server not in serverlist:
                serverlist.append(server)
            if serverfiletxt and self.session.master:
                self.writenodeserver(serverfiletxt, server)
        # hook to update coordinates of physical nodes
        if n in self.phys:
            self.session.mobility.physnodeupdateposition(msg)
        return (handle_locally, serverlist)
Exemplo n.º 2
0
 def handlenodemsg(self, msg):
     ''' Determine and return the servers to which this node message should
         be forwarded. Also keep track of link-layer nodes and the mapping of
         nodes to servers.
     '''
     serverlist = []
     handle_locally = False
     serverfiletxt = None
     # snoop Node Message for emulation server TLV and record mapping
     n = msg.tlvdata[coreapi.CORE_TLV_NODE_NUMBER]
     # replicate link-layer nodes on all servers
     nodetype = msg.gettlv(coreapi.CORE_TLV_NODE_TYPE)
     if nodetype is not None:
         try:
             nodecls = coreapi.node_class(nodetype)
         except KeyError:
             self.session.warn("broker invalid node type %s" % nodetype)
             return (False, serverlist)
         if nodecls is None:
             self.session.warn("broker unimplemented node type %s" % nodetype)
             return (False, serverlist)
         if issubclass(nodecls, PyCoreNet) and \
             nodetype != coreapi.CORE_NODE_WLAN:
             # network node replicated on all servers; could be optimized
             # don't replicate WLANs, because ebtables rules won't work
             serverlist = self.getserverlist()
             handle_locally = True
             self.addnet(n)
             for server in serverlist:
                 self.addnodemap(server, n)
             # do not record server name for networks since network
             # nodes are replicated across all server
             return (handle_locally, serverlist)
         if issubclass(nodecls, PyCoreNet) and \
             nodetype == coreapi.CORE_NODE_WLAN:
             # special case where remote WLANs not in session._objs, and no
             # node response message received, so they are counted here
             if msg.gettlv(coreapi.CORE_TLV_NODE_EMUSRV) is not None:
                 self.incrbootcount()
         elif issubclass(nodecls, PyCoreNode):
             name = msg.gettlv(coreapi.CORE_TLV_NODE_NAME)
             if name:
                 serverfiletxt = "%s %s %s" % (n, name, nodecls)
             if issubclass(nodecls, PhysicalNode):
                 # remember physical nodes
                 self.addphys(n)
         
     # emulation server TLV specifies server
     server = msg.gettlv(coreapi.CORE_TLV_NODE_EMUSRV)
     if server is not None:
         self.addnodemap(server, n)
         if server not in serverlist:
             serverlist.append(server)
         if serverfiletxt and self.session.master:
             self.writenodeserver(serverfiletxt, server)
     # hook to update coordinates of physical nodes
     if n in self.phys:
         self.session.mobility.physnodeupdateposition(msg)
     return (handle_locally, serverlist)
Exemplo n.º 3
0
Arquivo: sdt.py Projeto: coreemu/core
    def handlenodemsg(self, msg):
        ''' Process a Node Message to add/delete or move a node on
            the SDT display. Node properties are found in session._objs or
            self.remotes for remote nodes (or those not yet instantiated).
        '''
        # for distributed sessions to work properly, the SDT option should be
        # enabled prior to starting the session
        if not self.is_enabled():
            return False
        # node.(objid, type, icon, name) are used.
        nodenum = msg.gettlv(coreapi.CORE_TLV_NODE_NUMBER)
        if not nodenum:
            return
        x = msg.gettlv(coreapi.CORE_TLV_NODE_XPOS)
        y = msg.gettlv(coreapi.CORE_TLV_NODE_YPOS)
        z = None
        name = msg.gettlv(coreapi.CORE_TLV_NODE_NAME)
        
        nodetype = msg.gettlv(coreapi.CORE_TLV_NODE_TYPE)
        model = msg.gettlv(coreapi.CORE_TLV_NODE_MODEL)
        icon = msg.gettlv(coreapi.CORE_TLV_NODE_ICON)

        net = False
        if nodetype == coreapi.CORE_NODE_DEF or \
           nodetype == coreapi.CORE_NODE_PHYS or \
           nodetype == coreapi.CORE_NODE_XEN:
            if model is None:
                model = "router"
            type = model
        elif nodetype != None:
            type = coreapi.node_class(nodetype).type
            net = True
        else:
            type = None
            
        try:
            node = self.session.obj(nodenum)
        except KeyError:
            node = None
        if node:
            self.updatenode(node.objid, msg.flags, x, y, z,
                            node.name, node.type, node.icon)
        else:
            if nodenum in self.remotes:
                remote = self.remotes[nodenum]
                if name is None:
                    name = remote.name
                if type is None:
                    type = remote.type
                if icon is None:
                    icon = remote.icon
            else:
                remote = self.Bunch(objid=nodenum, type=type, icon=icon,
                                    name=name, net=net, links=set())
                self.remotes[nodenum] = remote
            remote.pos = (x, y, z)
            self.updatenode(nodenum, msg.flags, x, y, z, name, type, icon)
Exemplo n.º 4
0
    def handlenodemsg(self, msg):
        ''' Process a Node Message to add/delete or move a node on
            the SDT display. Node properties are found in session._objs or
            self.remotes for remote nodes (or those not yet instantiated).
        '''
        # for distributed sessions to work properly, the SDT option should be
        # enabled prior to starting the session
        if not self.is_enabled():
            return False
        # node.(objid, type, icon, name) are used.
        nodenum = msg.gettlv(coreapi.CORE_TLV_NODE_NUMBER)
        if not nodenum:
            return
        x = msg.gettlv(coreapi.CORE_TLV_NODE_XPOS)
        y = msg.gettlv(coreapi.CORE_TLV_NODE_YPOS)
        z = None
        name = msg.gettlv(coreapi.CORE_TLV_NODE_NAME)

        nodetype = msg.gettlv(coreapi.CORE_TLV_NODE_TYPE)
        model = msg.gettlv(coreapi.CORE_TLV_NODE_MODEL)
        icon = msg.gettlv(coreapi.CORE_TLV_NODE_ICON)

        net = False
        if nodetype == coreapi.CORE_NODE_DEF or \
           nodetype == coreapi.CORE_NODE_PHYS or \
           nodetype == coreapi.CORE_NODE_XEN:
            if model is None:
                model = "router"
            type = model
        elif nodetype != None:
            type = coreapi.node_class(nodetype).type
            net = True
        else:
            type = None

        try:
            node = self.session.obj(nodenum)
        except KeyError:
            node = None
        if node:
            self.updatenode(node.objid, msg.flags, x, y, z, node.name,
                            node.type, node.icon)
        else:
            if nodenum in self.remotes:
                remote = self.remotes[nodenum]
                if name is None:
                    name = remote.name
                if type is None:
                    type = remote.type
                if icon is None:
                    icon = remote.icon
            else:
                remote = self.Bunch(objid=nodenum,
                                    type=type,
                                    icon=icon,
                                    name=name,
                                    net=net,
                                    links=set())
                self.remotes[nodenum] = remote
            remote.pos = (x, y, z)
            self.updatenode(nodenum, msg.flags, x, y, z, name, type, icon)