Read content from NFC tags abd dispatch it as requests to Platypush

nfcexec.py

import json
import logging
import nfc
import ndef
import sys
import time

from redis import Redis

logging.basicConfig(stream=sys.stdout, level=logging.DEBUG)

def on_connect(tag):
    has_msg_records = False
    tag_id = ':'.join([('%02x' % ord(c)) for c in tag.identifier])
    logging.info('Tag ID {} connected'.format(tag_id))

    if not tag or not tag.ndef:
        return

    for record in tag.ndef.records:
        if isinstance(record, ndef.TextRecord):
            try:
                msg = json.loads(record.text)
                has_msg_records = True
            except:
                continue

            logging.info('Executing: {}'.format(record.text))
            redis = Redis()
            redis.rpush('platypush_bus_mq', msg)

    return has_msg_records

while True:
    with nfc.ContactlessFrontend('usb') as clf:
        tag = clf.connect(
            rdwr={'on-connect': on_connect}
        )