check_mk check -- problem with parse_function

ttn_gateway

#!/usr/bin/python
# -*- encoding: utf-8; py-indent-offset: 4 -*-

# This is free software;  you can redistribute it and/or modify it
# under the  terms of the  GNU General Public License  as published by
# the Free Software Foundation in version 2.  This file is distributed
# in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
# out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
# PARTICULAR PURPOSE. See the  GNU General Public License for more de-
# ails.  You should have  received  a copy of the  GNU  General Public
# License along with GNU Make; see the file  COPYING.  If  not,  write
# to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
# Boston, MA 02110-1301 USA.

#<<<ttn_gateway>>>
#Markus TTIG (The Things Indoor Gateway 2.0.0):	64

factory_settings["ttn_gateway_lastseen_default_levels"] = {
    "levels": (10*60, 15*60)
}

def parse_ttn_gateway_info(info):
    pprint.pprint(info)
    parsed = {}
    for line in info:
        if not line.startswith("<<<"):
            (gateway, value) = line.split(":")
            parsed[gateway.strip()] = value.strip()
    return parsed

def inventory_ttn_gateway_lastseen(parsed):
    pprint.pprint(parsed)
    for gateway in parsed:
        yield gateway, None

def check_ttn_gateway_lastseen(item, params, parsed):
    if isinstance(params, tuple):
        warn, crit = params
    else:
        warn, crit = params['levels']
    for gateway in parsed:
        if gateway == item:
            value = saveint(parsed[gateway])
            perfdata = [('last seen', value, warn, crit)]
            if value < warn:
                yield 0, "%d s since last seen" % value, perfdata
            elif value < crit:
                yield 1, "%d s since last seen" % value, perfdata
            else:
                yield 2, "%d s since last seen" % value, perfdata

check_info["ttn_gateway.lastseen"] = {
    'parse_function'      : parse_ttn_gateway_info,
    'check_function'      : check_ttn_gateway_lastseen,
    'inventory_function'  : inventory_ttn_gateway_lastseen,
    'has_perfdata'        : True,
    'service_description' : 'TTN Gateway %s',
    'default_levels_variable' :  'ttn_gateway_lastseen_default_levels'
}