src/emuvim/cli/datacenter.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()
  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 list(self, args):
  53         r = self.c.datacenter_list()
  54         table = []
  55         for d in r:
  56             # for each dc add a line to the output table
  57             if len(d) > 0:
  58                 table.append([d.get("label"),
  59                               d.get("internalname"),
  60                               d.get("switch"),
  61                               d.get("n_running_containers"),
  62                               len(d.get("metadata"))])
  63         headers = ["Label",
  64                    "Internal Name",
  65                    "Switch",
  66                    "# Containers",
  67                    "# Metadata Items"]
  68         print(tabulate(table, headers=headers, tablefmt="grid"))
  69
  70     def status(self, args):
  71         r = self.c.datacenter_status(
  72             args.get("datacenter"))
  73         pp.pprint(r)
  74
  75
  76 parser = argparse.ArgumentParser(description='son-emu datacenter')
  77 parser.add_argument(
  78     "command",
  79     choices=['list', 'status'],
  80     help="Action to be executed.")
  81 parser.add_argument(
  82     "--datacenter", "-d", dest="datacenter",
  83     help="Data center to which the command should be applied.")
  84
  85
  86 def main(argv):
  87     args = vars(parser.parse_args(argv))
  88     c = ZeroRpcClient()
  89     c.execute_command(args)