src/emuvim/cli/rest/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 from requests import get, put, delete
  29 from tabulate import tabulate
  30 import pprint
  31 import argparse
  32 import json
  33
  34 pp = pprint.PrettyPrinter(indent=4)
  35
  36
  37 class RestApiClient():
  38     def __init__(self):
  39         self.cmds = {}
  40
  41     def execute_command(self, args):
  42         if getattr(self, args["command"]) is not None:
  43             # call the local method with the same name as the command arg
  44             getattr(self, args["command"])(args)
  45         else:
  46             print("Command not implemented.")
  47
  48     def start(self, args):
  49
  50         req = {'image': args.get("image"),
  51                'command': args.get("docker_command"),
  52                'network': args.get("network")}
  53
  54         response = put("%s/restapi/compute/%s/%s" %
  55                        (args.get("endpoint"),
  56                         args.get("datacenter"),
  57                         args.get("name")),
  58                        json=req)
  59
  60         pp.pprint(response.json())
  61
  62     def stop(self, args):
  63
  64         response = delete("%s/restapi/compute/%s/%s" %
  65                           (args.get("endpoint"),
  66                            args.get("datacenter"),
  67                            args.get("name")))
  68         pp.pprint(response.json())
  69
  70     def list(self, args):
  71
  72         list = get('%s/restapi/compute/%s' % (args.get("endpoint"), args.get('datacenter'))).json()
  73
  74         table = []
  75         for c in list:
  76             # for each container add a line to the output table
  77             if len(c) > 1:
  78                 name = c[0]
  79                 status = c[1]
  80                 eth0ip = status.get("docker_network", "-")
  81                 table.append([status.get("datacenter"),
  82                               name,
  83                               status.get("image"),
  84                               eth0ip,
  85                               status.get("state").get("Status")])
  86
  87         headers = ["Datacenter",
  88                    "Container",
  89                    "Image",
  90                    "docker0",
  91                    "Status"]
  92         print(tabulate(table, headers=headers, tablefmt="grid"))
  93
  94     def status(self, args):
  95
  96         list = get("%s/restapi/compute/%s/%s" %
  97                    (args.get("endpoint"),
  98                     args.get("datacenter"),
  99                     args.get("name"))).json()
 100
 101         pp.pprint(list)
 102
 103
 104 parser = argparse.ArgumentParser(description="""son-emu compute
 105
 106     Examples:
 107     - son-emu-cli compute start -d dc2 -n client -i sonatanfv/sonata-iperf3-vnf
 108     - son-emu-cli list
 109     - son-emu-cli compute status -d dc2 -n client
 110     """, formatter_class=argparse.RawTextHelpFormatter)
 111 parser.add_argument(
 112     "command",
 113     choices=['start', 'stop', 'list', 'status'],
 114     help="Action to be executed.")
 115 parser.add_argument(
 116     "--datacenter", "-d", dest="datacenter",
 117     help="Data center to which the command should be applied.")
 118 parser.add_argument(
 119     "--name", "-n", dest="name",
 120     help="Name of compute instance e.g. 'vnf1'.")
 121 parser.add_argument(
 122     "--image", "-i", dest="image",
 123     help="Name of container image to be used e.g. 'ubuntu:trusty'")
 124 parser.add_argument(
 125     "--dcmd", "-c", dest="docker_command",
 126     help="Startup command of the container e.g. './start.sh'")
 127 parser.add_argument(
 128     "--net", dest="network",
 129     help="Network properties of a compute instance e.g. \
 130           '(id=input,ip=10.0.10.3/24),(id=output,ip=10.0.10.4/24)' for multiple interfaces.")
 131 parser.add_argument(
 132     "--endpoint", "-e", dest="endpoint",
 133     default="http://127.0.0.1:5001",
 134     help="UUID of the plugin to be manipulated.")
 135
 136
 137 def main(argv):
 138     args = vars(parser.parse_args(argv))
 139     c = RestApiClient()
 140     c.execute_command(args)