src/emuvim/cli/compute.py

   1 """
   2 son-emu compute 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
  15 class ZeroRpcClient(object):
  16
  17     def __init__(self):
  18         self.c = zerorpc.Client()
  19         self.c.connect("tcp://127.0.0.1:4242")  # TODO hard coded for now. we'll change this later
  20         self.cmds = {}
  21
  22     def execute_command(self, args):
  23         if getattr(self, args["command"]) is not None:
  24             # call the local method with the same name as the command arg
  25             getattr(self, args["command"])(args)
  26         else:
  27             print "Command not implemented."
  28
  29     def start(self, args):
  30         nw_list = list()
  31         if args.get("network") is not None:
  32             nw_list = self._parse_network(args.get("network"))
  33
  34         r = self.c.compute_action_start(
  35             args.get("datacenter"),
  36             args.get("name"),
  37             args.get("image"),
  38             nw_list,
  39             args.get("docker_command")
  40             )
  41         pp.pprint(r)
  42
  43     def stop(self, args):
  44         r = self.c.compute_action_stop(
  45             args.get("datacenter"), args.get("name"))
  46         pp.pprint(r)
  47
  48     def list(self, args):
  49         r = self.c.compute_list(
  50             args.get("datacenter"))
  51         table = []
  52         for c in r:
  53             # for each container add a line to the output table
  54             if len(c) > 1:
  55                 name = c[0]
  56                 status = c[1]
  57                 eth0ip = None
  58                 eth0status = "down"
  59                 if len(status.get("network")) > 0:
  60                     eth0ip = status.get("network")[0][1]
  61                     eth0status = "up" if status.get(
  62                         "network")[0][3] else "down"
  63                 table.append([status.get("datacenter"),
  64                               name,
  65                               status.get("image"),
  66                               eth0ip,
  67                               eth0status,
  68                               status.get("state").get("Status")])
  69         headers = ["Datacenter",
  70                    "Container",
  71                    "Image",
  72                    "eth0 IP",
  73                    "eth0 status",
  74                    "Status"]
  75         print tabulate(table, headers=headers, tablefmt="grid")
  76
  77     def status(self, args):
  78         r = self.c.compute_status(
  79             args.get("datacenter"), args.get("name"))
  80         pp.pprint(r)
  81
  82     def profile(self, args):
  83         nw_list = list()
  84         if args.get("network") is not None:
  85             nw_list = self._parse_network(args.get("network"))
  86
  87         params = self._create_dict(
  88             network=nw_list,
  89             command=args.get("docker_command"),
  90             input=args.get("input"),
  91             output=args.get("output"))
  92
  93         r = self.c.compute_profile(
  94             args.get("datacenter"),
  95             args.get("name"),
  96             args.get("image"),
  97             params
  98         )
  99         pp.pprint(r)
 100
 101     def _create_dict(self, **kwargs):
 102         return kwargs
 103
 104     def _parse_network(self, network_str):
 105         '''
 106         parse the options for all network interfaces of the vnf
 107         :param network_str: (id=x,ip=x.x.x.x/x), ...
 108         :return: list of dicts [{"id":x,"ip":"x.x.x.x/x"}, ...]
 109         '''
 110         nw_list = list()
 111         networks = network_str[1:-1].split('),(')
 112         for nw in networks:
 113             nw_dict = dict(tuple(e.split('=')) for e in nw.split(','))
 114             nw_list.append(nw_dict)
 115
 116         return nw_list
 117
 118
 119
 120 parser = argparse.ArgumentParser(description='son-emu compute')
 121 parser.add_argument(
 122     "command",
 123     choices=['start', 'stop', 'list', 'status'],
 124     help="Action to be executed.")
 125 parser.add_argument(
 126     "--datacenter", "-d", dest="datacenter",
 127     help="Data center to in which the compute instance should be executed")
 128 parser.add_argument(
 129     "--name", "-n", dest="name",
 130     help="Name of compute instance e.g. 'vnf1'")
 131 parser.add_argument(
 132     "--image","-i", dest="image",
 133     help="Name of container image to be used e.g. 'ubuntu:trusty'")
 134 parser.add_argument(
 135     "--dcmd", "-c", dest="docker_command",
 136     help="Startup command of the container e.g. './start.sh'")
 137 parser.add_argument(
 138     "--net", dest="network",
 139     help="Network properties of compute instance e.g. \
 140           '10.0.0.123/8' or '10.0.0.123/8,11.0.0.123/24' for multiple interfaces.")
 141 parser.add_argument(
 142     "--input", "-in", dest="input",
 143     help="input interface of the vnf to profile")
 144 parser.add_argument(
 145     "--output", "-out", dest="output",
 146     help="output interface of the vnf to profile")
 147
 148
 149 def main(argv):
 150     args = vars(parser.parse_args(argv))
 151     c = ZeroRpcClient()
 152     c.execute_command(args)