src/emuvim/cli/compute.py

   1 """
   2 Copyright (c) 2015 SONATA-NFV and Paderborn University
   3 ALL RIGHTS RESERVED.
   4
   5 Licensed under the Apache License, Version 2.0 (the "License");
   6 you may not use this file except in compliance with the License.
   7 You may obtain a copy of the License at
   8
   9     http://www.apache.org/licenses/LICENSE-2.0
  10
  11 Unless required by applicable law or agreed to in writing, software
  12 distributed under the License is distributed on an "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 See the License for the specific language governing permissions and
  15 limitations under the License.
  16
  17 Neither the name of the SONATA-NFV [, ANY ADDITIONAL AFFILIATION]
  18 nor the names of its contributors may be used to endorse or promote
  19 products derived from this software without specific prior written
  20 permission.
  21
  22 This work has been performed in the framework of the SONATA project,
  23 funded by the European Commission under Grant number 671517 through
  24 the Horizon 2020 and 5G-PPP programmes. The authors would like to
  25 acknowledge the contributions of their colleagues of the SONATA
  26 partner consortium (www.sonata-nfv.eu).
  27 """
  28
  29 import argparse
  30 import pprint
  31 from tabulate import tabulate
  32 import zerorpc
  33
  34
  35 pp = pprint.PrettyPrinter(indent=4)
  36
  37
  38 class ZeroRpcClient(object):
  39
  40     def __init__(self):
  41         self.c = zerorpc.Client(heartbeat=None, timeout=120) #heartbeat=None, timeout=120
  42         self.c.connect("tcp://127.0.0.1:4242")  # TODO hard coded for now. we'll change this later
  43         self.cmds = {}
  44
  45     def execute_command(self, args):
  46         if getattr(self, args["command"]) is not None:
  47             # call the local method with the same name as the command arg
  48             getattr(self, args["command"])(args)
  49         else:
  50             print("Command not implemented.")
  51
  52     def start(self, args):
  53         nw_list = list()
  54         if args.get("network") is not None:
  55             nw_list = self._parse_network(args.get("network"))
  56         r = self.c.compute_action_start(
  57             args.get("datacenter"),
  58             args.get("name"),
  59             args.get("image"),
  60             nw_list,
  61             args.get("docker_command")
  62             )
  63         pp.pprint(r)
  64
  65     def stop(self, args):
  66         r = self.c.compute_action_stop(
  67             args.get("datacenter"), args.get("name"))
  68         pp.pprint(r)
  69
  70     def list(self, args):
  71         r = self.c.compute_list(
  72             args.get("datacenter"))
  73         table = []
  74         for c in r:
  75             # for each container add a line to the output table
  76             if len(c) > 1:
  77                 name = c[0]
  78                 status = c[1]
  79                 eth0ip = None
  80                 eth0status = "down"
  81                 if len(status.get("network")) > 0:
  82                     eth0ip = status.get("network")[0].get("ip")
  83                     eth0status = "up" if status.get(
  84                         "network")[0].get("up") else "down"
  85                 table.append([status.get("datacenter"),
  86                               name,
  87                               status.get("image"),
  88                               eth0ip,
  89                               eth0status,
  90                               status.get("state").get("Status")])
  91         headers = ["Datacenter",
  92                    "Container",
  93                    "Image",
  94                    "eth0 IP",
  95                    "eth0 status",
  96                    "Status"]
  97         print(tabulate(table, headers=headers, tablefmt="grid"))
  98
  99     def status(self, args):
 100         r = self.c.compute_status(
 101             args.get("datacenter"), args.get("name"))
 102         pp.pprint(r)
 103
 104     def _create_dict(self, **kwargs):
 105         return kwargs
 106
 107     def _parse_network(self, network_str):
 108         '''
 109         parse the options for all network interfaces of the vnf
 110         :param network_str: (id=x,ip=x.x.x.x/x), ...
 111         :return: list of dicts [{"id":x,"ip":"x.x.x.x/x"}, ...]
 112         '''
 113         nw_list = list()
 114         networks = network_str[1:-1].split('),(')
 115         for nw in networks:
 116             nw_dict = dict(tuple(e.split('=')) for e in nw.split(','))
 117             nw_list.append(nw_dict)
 118
 119         return nw_list
 120
 121
 122
 123 parser = argparse.ArgumentParser(description='son-emu compute')
 124 parser.add_argument(
 125     "command",
 126     choices=['start', 'stop', 'list', 'status'],
 127     help="Action to be executed.")
 128 parser.add_argument(
 129     "--datacenter", "-d", dest="datacenter",
 130     help="Data center to in which the compute instance should be executed")
 131 parser.add_argument(
 132     "--name", "-n", dest="name",
 133     help="Name of compute instance e.g. 'vnf1'")
 134 parser.add_argument(
 135     "--image","-i", dest="image",
 136     help="Name of container image to be used e.g. 'ubuntu:trusty'")
 137 parser.add_argument(
 138     "--dcmd", "-c", dest="docker_command",
 139     help="Startup command of the container e.g. './start.sh'")
 140 parser.add_argument(
 141     "--net", dest="network",
 142     help="Network properties of a compute instance e.g. \
 143           '(id=input,ip=10.0.10.3/24),(id=output,ip=10.0.10.4/24)' for multiple interfaces.")
 144
 145 def main(argv):
 146     args = vars(parser.parse_args(argv))
 147     c = ZeroRpcClient()
 148     c.execute_command(args)