src/emuvim/cli/network.py

   1 """
   2 son-emu network CLI
   3 (c) 2016 by Manuel Peuster <manuel.peuster@upb.de>
   4 """
   5
   6 import argparse
   7 import pprint
   8 from tabulate import tabulate
   9 import zerorpc
  10
  11
  12 pp = pprint.PrettyPrinter(indent=4)
  13
  14 class ZeroRpcClient(object):
  15
  16     def __init__(self):
  17         self.c = zerorpc.Client()
  18         # TODO connect to DCNetwork API
  19         #self.c.connect("tcp://127.0.0.1:4242")  # TODO hard coded for now. we'll change this later
  20         self.c.connect("tcp://127.0.0.1:5151")
  21         self.cmds = {}
  22
  23     def execute_command(self, args):
  24         if getattr(self, args["command"]) is not None:
  25             # call the local method with the same name as the command arg
  26             getattr(self, args["command"])(args)
  27         else:
  28             print "Command not implemented."
  29
  30     def add(self, args):
  31         vnf_src_name = self._parse_vnf_name(args.get("source"))
  32         vnf_dst_name = self._parse_vnf_name(args.get("destination"))
  33
  34         params = self._create_dict(
  35             vnf_src_interface=self._parse_vnf_interface(args.get("source")),
  36             vnf_dst_interface=self._parse_vnf_interface(args.get("destination")),
  37             weight=args.get("weight"),
  38             match=args.get("match"),
  39             bidirectional=args.get("bidirectional"))
  40
  41         # note zerorpc does not support named arguments
  42         r = self.c.network_action_start(
  43             #args.get("datacenter"),
  44             vnf_src_name,
  45             vnf_dst_name,
  46             params)
  47         pp.pprint(r)
  48
  49     def remove(self, args):
  50         vnf_src_name = self._parse_vnf_name(args.get("source"))
  51         vnf_dst_name = self._parse_vnf_name(args.get("destination"))
  52
  53         params = self._create_dict(
  54             vnf_src_interface=self._parse_vnf_interface(args.get("source")),
  55             vnf_dst_interface=self._parse_vnf_interface(args.get("destination")),
  56             weight=args.get("weight"),
  57             match=args.get("match"))
  58
  59         r = self.c.network_action_stop(
  60             #args.get("datacenter"),
  61             vnf_src_name,
  62             vnf_dst_name,
  63             params)
  64         pp.pprint(r)
  65
  66     def _parse_vnf_name(self, vnf_name_str):
  67         vnf_name = vnf_name_str.split(':')[0]
  68         return vnf_name
  69
  70     def _parse_vnf_interface(self, vnf_name_str):
  71         try:
  72             vnf_interface = vnf_name_str.split(':')[1]
  73         except:
  74             vnf_interface = None
  75
  76         return vnf_interface
  77
  78     def _create_dict(self, **kwargs):
  79         return kwargs
  80
  81 parser = argparse.ArgumentParser(description='son-emu network')
  82 parser.add_argument(
  83     "command",
  84     help="Action to be executed: add|remove")
  85 parser.add_argument(
  86     "--datacenter", "-d", dest="datacenter",
  87     help="Data center to in which the network action should be initiated")
  88 parser.add_argument(
  89     "--source", "-src", dest="source",
  90     help="vnf name of the source of the chain")
  91 parser.add_argument(
  92     "--destination", "-dst", dest="destination",
  93     help="vnf name of the destination of the chain")
  94 parser.add_argument(
  95     "--weight", "-w", dest="weight",
  96     help="weight metric to calculate the path")
  97 parser.add_argument(
  98     "--match", "-m", dest="match",
  99     help="string holding extra matches for the flow entries")
 100 parser.add_argument(
 101     "--bidirectional", "-b", dest="bidirectional",
 102     action='store_true',
 103     help="add/remove the flow entries in 2 directions")
 104
 105
 106 def main(argv):
 107     args = vars(parser.parse_args(argv))
 108     c = ZeroRpcClient()
 109     c.execute_command(args)