voice.py

@app.route('/api/voice/callback/', methods=['POST'])
def voice_callback():
    is_active     = request.values.get('isActive', None)
    session_id    = request.values.get('sessionId', None)
    caller_number = request.values.get('callerNumber', None)
    direction     = request.values.get('direction', None)
    destination   = request.values.get('destination', None)
    
    if isActive:
        r.hset(destination, 'phoneNumber', caller_number)
        r.hset(destination, 'sessionId', session_id)
    
        response = '<?xml version="1.0" encoding="UTF-8"?>'
        response += '<Response>'
        response += '<Say maxDuration="5" playBeep="false"> Demo, call in to see your location </Say>'
        response += '</Response>'
    else:
        durationInSeconds   = request.values.get('durationInSeconds', None)
        if int(durationInSeconds) > 0:
            # publish call conversion - initiated event
            visitor = Visitor()
            visitor.ip_address = request.remote_addr
            session = Session()
            event = Event(‘conversion’, ‘call-initiated’) # category — action
        else:
            # publish call conversion - droppped event
            visitor = Visitor()
            visitor.ip_address = request.remote_addr
            session = Session()
            event = Event(‘conversion’, ‘call-dropped’)
            tracker.track_event(event, session, visitor)

    resp = make_response(response, 200)
    resp.headers['Content-Type'] = "application/xml"
    resp.cache_control.no_cache = True
    return resp