def token_time_remaining(token):
s = Serializer(current_app.config['SECRET_KEY'])
try:
data = s.loads(token, return_header=True)
except SignatureExpired:
return None
except BadSignature:
return None
data = s.loads(token, return_header=True)
token_time_remaining = (data[1]['exp'] - s.now())
return token_time_remaining
def _get_token(self, type, data, expiration):
"""
Generate new token if:
1. first time 2. previous token is expired
Otherwise get token from cache.
"""
s = Serializer(current_app.config['SECRET_KEY'], expiration)
cached_token = _token_cache.get((self, type))
header = s.make_header({})
if cached_token and header['exp'] >= s.now():
return cached_token
token = s.dumps(data)
_token_cache[(self, type)] = token
return token
