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             networks = args.get("network").split(",")
  33             for nw in networks:
  34                 nw_list.append({"ip": nw})
  35         r = self.c.compute_action_start(
  36             args.get("datacenter"),
  37             args.get("name"),
  38             args.get("image"),
  39             args.get("docker_command"),
  40             nw_list)
  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
  83 parser = argparse.ArgumentParser(description='son-emu compute')
  84 parser.add_argument(
  85     "command",
  86     choices=['start', 'stop', 'list', 'status'],
  87     help="Action to be executed.")
  88 parser.add_argument(
  89     "--datacenter", "-d", dest="datacenter",
  90     help="Data center to in which the compute instance should be executed")
  91 parser.add_argument(
  92     "--name", "-n", dest="name",
  93     help="Name of compute instance e.g. 'vnf1'")
  94 parser.add_argument(
  95     "--image","-i", dest="image",
  96     help="Name of container image to be used e.g. 'ubuntu'")
  97 parser.add_argument(
  98     "--dcmd", "-c", dest="docker_command",
  99     help="Startup command of the container e.g. './start.sh'")
 100 parser.add_argument(
 101     "--net", dest="network",
 102     help="Network properties of compute instance e.g. \
 103           '10.0.0.123/8' or '10.0.0.123/8,11.0.0.123/24' for multiple interfaces.")
 104
 105
 106 def main(argv):
 107     args = vars(parser.parse_args(argv))
 108     c = ZeroRpcClient()
 109     c.execute_command(args)