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##############################################################################
# Copyright (c) 2017 ZTE Corporation and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
from flask import Flask
from flask import request
import json
import time
from threading import Thread
import requests
from consumer.base import BaseConsumer
class SampleConsumer(BaseConsumer):
def __init__(self, conf, log):
super(SampleConsumer, self).__init__(conf, log)
self.app = None
def start(self):
self.log.info('sample consumer start......')
self.app = ConsumerApp(self.conf.consumer.port, self, self.log)
self.app.start()
def stop(self):
self.log.info('sample consumer stop......')
if not self.app:
return
headers = {
'Content-Type': 'application/json',
'Accept': 'application/json',
}
url = 'http://%s:%d/shutdown'\
% (self.conf.consumer.ip,
self.conf.consumer.port)
requests.post(url, data='', headers=headers)
class ConsumerApp(Thread):
def __init__(self, port, consumer, log):
Thread.__init__(self)
self.port = port
self.consumer = consumer
self.log = log
def run(self):
app = Flask('consumer')
@app.route('/failure', methods=['POST'])
def event_posted():
self.log.info('doctor consumer notified at %s' % time.time())
self.log.info('sample consumer received data = %s' % request.data)
data = json.loads(request.data.decode('utf8'))
return 'OK'
@app.route('/shutdown', methods=['POST'])
def shutdown():
self.log.info('shutdown consumer app server at %s' % time.time())
func = request.environ.get('werkzeug.server.shutdown')
if func is None:
raise RuntimeError('Not running with the Werkzeug Server')
func()
return 'consumer app shutting down...'
app.run(host="0.0.0.0", port=self.port)
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