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_src_interface = self._parse_vnf_interface(args.get("source"))
  33         vnf_dst_name = self._parse_vnf_name(args.get("destination"))
  34         vnf_dst_interface = self._parse_vnf_interface(args.get("destination"))
  35         weight = args.get("weight")
  36         # note zerorpc does not support named arguments
  37         r = self.c.network_action_start(
  38             #args.get("datacenter"),
  39             vnf_src_name,
  40             vnf_dst_name,
  41             vnf_src_interface,
  42             vnf_dst_interface,
  43             weight)
  44         pp.pprint(r)
  45
  46     def remove(self, args):
  47         vnf_src_name = self._parse_vnf_name(args.get("source"))
  48         vnf_src_interface = self._parse_vnf_interface(args.get("source"))
  49         vnf_dst_name = self._parse_vnf_name(args.get("destination"))
  50         vnf_dst_interface = self._parse_vnf_interface(args.get("destination"))
  51         weight = args.get("weight")
  52         r = self.c.network_action_stop(
  53             #args.get("datacenter"),
  54             vnf_src_name,
  55             vnf_dst_name,
  56             vnf_src_interface,
  57             vnf_dst_interface,
  58             weight)
  59         pp.pprint(r)
  60
  61     def _parse_vnf_name(self, vnf_name_str):
  62         vnf_name = vnf_name_str.split(':')[0]
  63         return vnf_name
  64
  65     def _parse_vnf_interface(self, vnf_name_str):
  66         try:
  67             vnf_interface = vnf_name_str.split(':')[1]
  68         except:
  69             vnf_interface = None
  70
  71         return vnf_interface
  72
  73
  74 parser = argparse.ArgumentParser(description='son-emu network')
  75 parser.add_argument(
  76     "command",
  77     help="Action to be executed: add|remove")
  78 parser.add_argument(
  79     "--datacenter", "-d", dest="datacenter",
  80     help="Data center to in which the network action should be initiated")
  81 parser.add_argument(
  82     "--source", "-src", dest="source",
  83     help="vnf name of the source of the chain")
  84 parser.add_argument(
  85     "--destination", "-dst", dest="destination",
  86     help="vnf name of the destination of the chain")
  87 parser.add_argument(
  88     "--weight", "-w", dest="weight",
  89     help="weight metric to calculate the path")
  90
  91 def main(argv):
  92     args = vars(parser.parse_args(argv))
  93     c = ZeroRpcClient()
  94     c.execute_command(args)