doctor_tests/consumer/sample.py

   1 ##############################################################################
   2 # Copyright (c) 2017 ZTE Corporation and others.
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9 from flask import Flask
  10 from flask import request
  11 import json
  12 import time
  13 from threading import Thread
  14 import requests
  15
  16 from doctor_tests.consumer.base import BaseConsumer
  17
  18
  19 class SampleConsumer(BaseConsumer):
  20
  21     def __init__(self, conf, log):
  22         super(SampleConsumer, self).__init__(conf, log)
  23         self.app = None
  24
  25     def start(self):
  26         self.log.info('sample consumer start......')
  27         self.app = ConsumerApp(self.conf.consumer.port, self, self.log)
  28         self.app.start()
  29
  30     def stop(self):
  31         self.log.info('sample consumer stop......')
  32         if not self.app:
  33             return
  34         headers = {
  35             'Content-Type': 'application/json',
  36             'Accept': 'application/json',
  37         }
  38         url = 'http://%s:%d/shutdown'\
  39               % (self.conf.consumer.ip,
  40                  self.conf.consumer.port)
  41         requests.post(url, data='', headers=headers)
  42
  43
  44 class ConsumerApp(Thread):
  45
  46     def __init__(self, port, consumer, log):
  47         Thread.__init__(self)
  48         self.port = port
  49         self.consumer = consumer
  50         self.log = log
  51
  52     def run(self):
  53         app = Flask('consumer')
  54
  55         @app.route('/failure', methods=['POST'])
  56         def event_posted():
  57             self.log.info('doctor consumer notified at %s' % time.time())
  58             data = json.loads(request.data.decode('utf8'))
  59             self.log.info('sample consumer received data = %s' % data)
  60             return 'OK'
  61
  62         @app.route('/shutdown', methods=['POST'])
  63         def shutdown():
  64             self.log.info('shutdown consumer app server at %s' % time.time())
  65             func = request.environ.get('werkzeug.server.shutdown')
  66             if func is None:
  67                 raise RuntimeError('Not running with the Werkzeug Server')
  68             func()
  69             return 'consumer app shutting down...'
  70
  71         app.run(host="0.0.0.0", port=self.port)