src/emuvim/api/openstack/openstack_dummies/base_openstack_dummy.py

   1 # Copyright (c) 2015 SONATA-NFV and Paderborn University
   2 # ALL RIGHTS RESERVED.
   3 #
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at
   7 #
   8 #    http://www.apache.org/licenses/LICENSE-2.0
   9 #
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15 #
  16 # Neither the name of the SONATA-NFV, Paderborn University
  17 # nor the names of its contributors may be used to endorse or promote
  18 # products derived from this software without specific prior written
  19 # permission.
  20 #
  21 # This work has been performed in the framework of the SONATA project,
  22 # funded by the European Commission under Grant number 671517 through
  23 # the Horizon 2020 and 5G-PPP programmes. The authors would like to
  24 # acknowledge the contributions of their colleagues of the SONATA
  25 # partner consortium (www.sonata-nfv.eu).
  26 import logging
  27
  28 import threading
  29 from flask import Flask, request
  30 from flask_restful import Api, Resource
  31 from gevent.pywsgi import WSGIServer
  32
  33
  34 LOG = logging.getLogger("api.openstack.base")
  35
  36
  37 class BaseOpenstackDummy(Resource):
  38     """
  39     This class is the base class for all openstack entrypoints of son-emu.
  40     """
  41
  42     def __init__(self, listenip, port):
  43         self.ip = listenip
  44         self.port = port
  45         self.compute = None
  46         self.manage = None
  47         self.http_server = None
  48         self.server_thread = None
  49         self.playbook_file = '/tmp/son-emu-requests.log'
  50         with open(self.playbook_file, 'w'):
  51             pass
  52
  53         # setup Flask
  54         self.app = Flask(__name__)
  55         self.api = Api(self.app)
  56
  57     def start(self):
  58         self.server_thread = threading.Thread(target=self._start_flask, args=())
  59         self.server_thread.name = self.__class__.__name__
  60         self.server_thread.start()
  61
  62     def stop(self):
  63         if self.http_server:
  64             LOG.info('Stopping %s' % self.__class__.__name__)
  65             self.http_server.stop(timeout=1)
  66
  67     def _start_flask(self):
  68         LOG.info("Starting %s endpoint @ http://%s:%d" % (
  69             self.__class__.__name__, self.ip, self.port))
  70         self.http_server = WSGIServer(
  71             (self.ip, self.port),
  72             self.app,
  73             log=open("/dev/null", "w")  # don't show http logs
  74         )
  75         self.http_server.serve_forever(stop_timeout=1)
  76         LOG.info('Stopped %s' % self.__class__.__name__)
  77
  78     def dump_playbook(self):
  79         with self.manage.lock:
  80             with open(self.playbook_file, 'a') as logfile:
  81                 if len(request.data) > 0:
  82                     data = "# %s API\n" % str(
  83                         self.__class__).split('.')[-1].rstrip('\'>')
  84                     data += "curl -X {type} -H \"Content-type: application/json\" -d '{data}' {url}".format(type=request.method,
  85                                                                                                             data=request.data,
  86                                                                                                             url=request.url)
  87                     logfile.write(data + "\n")