src/emuvim/api/rest/monitor.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 """
  30 Distributed Cloud Emulator (dcemulator)
  31 Networking and monitoring functions
  32 (c) 2015 by Steven Van Rossem <steven.vanrossem@intec.ugent.be>
  33 """
  34
  35 import logging
  36 from flask_restful import Resource
  37 from flask import request
  38 import json
  39
  40 logging.basicConfig(level=logging.INFO)
  41
  42 CORS_HEADER = {'Access-Control-Allow-Origin': '*'}
  43
  44 net = None
  45
  46
  47
  48 class MonitorInterfaceAction(Resource):
  49     """
  50     Monitor the counters of a VNF interface
  51     :param vnf_name: name of the VNF to be monitored
  52     :param vnf_interface: name of the VNF interface to be monitored
  53     :param metric: tx_bytes, rx_bytes, tx_packets, rx_packets
  54     :return: message string indicating if the monitor action is succesful or not
  55     """
  56     global net
  57
  58     def put(self, vnf_name, vnf_interface=None, metric='tx_packets'):
  59         logging.debug("REST CALL: start monitor VNF interface")
  60         try:
  61             c = net.monitor_agent.setup_metric(vnf_name, vnf_interface, metric)
  62             # return monitor message response
  63             return  str(c), 200, CORS_HEADER
  64         except Exception as ex:
  65             logging.exception("API error.")
  66             return ex.message, 500, CORS_HEADER
  67
  68     def delete(self, vnf_name, vnf_interface=None, metric='tx_packets'):
  69         logging.debug("REST CALL: stop monitor VNF interface")
  70         try:
  71             c = net.monitor_agent.stop_metric(vnf_name, vnf_interface, metric)
  72             # return monitor message response
  73             return str(c), 200, CORS_HEADER
  74         except Exception as ex:
  75             logging.exception("API error.")
  76             return ex.message, 500, CORS_HEADER
  77
  78
  79 class MonitorFlowAction(Resource):
  80     """
  81     Monitor the counters of a specific flow
  82     :param vnf_name: name of the VNF to be monitored
  83     :param vnf_interface: name of the VNF interface to be monitored
  84     :param metric: tx_bytes, rx_bytes, tx_packets, rx_packets
  85     :param cookie: specific identifier of flows to monitor
  86     :return: message string indicating if the monitor action is succesful or not
  87     """
  88     global net
  89
  90     def put(self, vnf_name, vnf_interface=None, metric='tx_packets', cookie=0):
  91         logging.debug("REST CALL: start monitor VNF interface")
  92         try:
  93             c = net.monitor_agent.setup_flow(vnf_name, vnf_interface, metric, cookie)
  94             # return monitor message response
  95             return str(c), 200, CORS_HEADER
  96         except Exception as ex:
  97             logging.exception("API error.")
  98             return ex.message, 500, CORS_HEADER
  99
 100     def delete(self, vnf_name, vnf_interface=None, metric='tx_packets', cookie=0):
 101         logging.debug("REST CALL: stop monitor VNF interface")
 102         try:
 103             c = net.monitor_agent.stop_flow(vnf_name, vnf_interface, metric, cookie)
 104             # return monitor message response
 105             return str(c), 200, CORS_HEADER
 106         except Exception as ex:
 107             logging.exception("API error.")
 108             return ex.message, 500, CORS_HEADER