emerson_temp.py

#!/usr/bin/env python3
# Copyright (C) 2019 Checkmk GmbH - License: GNU General Public License v2
# This file is part of Checkmk (https://checkmk.com). It is subject to the terms and
# conditions defined in the file COPYING, which is part of this source code package.


from cmk.base.check_legacy_includes.temperature import check_temperature

from cmk.agent_based.legacy.v0_unstable import LegacyCheckDefinition
from cmk.agent_based.v2 import SNMPTree, startswith, StringTable

check_info = {}

#
# during inventory we are looking for all temperatures available,
# in this example there are two (index 1 & 2):
#
# EES-POWER-MIB::psTemperature1.0 .1.3.6.1.4.1.6302.2.1.2.7.1
# EES-POWER-MIB::psTemperature2.0 .1.3.6.1.4.1.6302.2.1.2.7.2
#
# the mib is the NetSure_ESNA.mib, which we have received from directly
# from a customer, its named "Emerson Energy Systems (EES) Power MIB"


def inventory_emerson_temp(info):
    # Device appears to mark missing sensors by temperature value -999999
    yield from ((str(nr), {}) for nr, line in enumerate(info) if int(line[0]) >= -273000)


def check_emerson_temp(item, params, info):
    item_index = int(item)
    if item_index >= len(info):
        return None

    if int(info[item_index][0]) < -273000:
        return 3, "Sensor offline"

    temp = float(info[item_index][0]) / 1000.0
    return check_temperature(temp, params, "emerson_temp_%s" % item)


def parse_emerson_temp(string_table: StringTable) -> StringTable:
    return [[x] for x in string_table[0]]


check_info["emerson_temp"] = LegacyCheckDefinition(
    name="emerson_temp",
    parse_function=parse_emerson_temp,
    detect=startswith(".1.3.6.1.4.1.6302.2.1.1.1.0", "Emerson Network Power"),
    fetch=SNMPTree(
        base=".1.3.6.1.4.1.6302.2.1.2",
        oids=["7.1", "7.2"],
    ),
    service_name="Temperature %s",
    discovery_function=inventory_emerson_temp,
    check_function=check_emerson_temp,
    check_ruleset_name="temperature",
    check_default_parameters={"levels": (40.0, 50.0)},
)