#!/usr/bin/python
# -*- encoding: utf-8; py-indent-offset: 4 -*-
# +------------------------------------------------------------------+
# |             ____ _               _        __  __ _  __           |
# |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
# |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
# |           | |___| | | |  __/ (__|   <    | |  | | . \            |
# |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
# |                                                                  |
# | Copyright Mathias Kettner 2014             mk@mathias-kettner.de |
# +------------------------------------------------------------------+
#
# This file is part of Check_MK.
# The official homepage is at http://mathias-kettner.de/check_mk.
#
# check_mk 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.  check_mk 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-
# tails. 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.

# Tested with Dell PowerConnect 5448 and 5424 models.
# Relevant SNMP OIDs:
# .1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1.1.67109185 = INTEGER: 67109185
# .1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1.1.67109186 = INTEGER: 67109186
# .1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1.2.67109185 = STRING: "ps1_unit1"
# .1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1.2.67109186 = STRING: "ps2_unit1"
# .1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1.3.67109185 = INTEGER: 1
# .1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1.3.67109186 = INTEGER: 5
# .1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1.4.67109185 = INTEGER: 5
# .1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1.4.67109186 = INTEGER: 4

# Status codes:
# 1 => normal,
# 2 => warning,
# 3 => critical,
# 4 => shutdown,
# 5 => notPresent,
# 6 => notFunctioning

# Supply Source Codes:
# 1 => unknown
# 2 => ac
# 3 => dc
# 4 => externalPowerSupply
# 5 => internalRedundant

# GENERAL MAPS:
dell_powerconnect_psu_status_map = {
    '1': 'normal',
    '2': 'warning',
    '3': 'critical',
    '4': 'shutdown',
    '5': 'notPresent',
    '6': 'notFunctioning',
}

dell_powerconnect_psu_supply_map = {
    '1': 'Unknown',
    '2': 'Alternating Current',
    '3': 'Direct Current',
    '4': 'External Power Supply',
    '5': 'Internal Redundant',
}

dell_powerconnect_psu_status2nagios_map = {
    'normal'         : 0,
    'warning'        : 1,
    'critical'       : 2,
    'shutdown'       : 3,
    'notPresent'     : 1,
    'notFunctioning' : 2,
}

def inventory_dell_powerconnect_psu(checkname, info):
    inventory = []
    if not info or not info[0]:
        return
    hw_ident = info[0][0][0]
    for device_id, name, state, supply in info[1]:
        # M6220 are blade switches which report valid values only for the "Main"
        # sensor. The other one is reported as notFunctioning, but this is wrong.
        # Simply ignore the "System" sensor for those devices.
        if dell_powerconnect_psu_status_map[state] != 'notPresent' \
           and ('M6220' not in hw_ident or name != 'System'):
            inventory.append((name, None))
    return inventory

def check_dell_powerconnect_psu(item, _not_used, info):
    hw_ident = info[0][0][0]
    for device_id, name, state, supply in info[1]:
        if name == item:
            dell_powerconnect_status = dell_powerconnect_psu_status_map[state]
            status = dell_powerconnect_psu_status2nagios_map[dell_powerconnect_status]

            return status, 'Condition is %s, with source %s' % \
                      (dell_powerconnect_status, dell_powerconnect_psu_supply_map[supply])

    return (3, "item not found in snmp data")

check_info["dell_powerconnect_psu"] = {
    'check_function':          check_dell_powerconnect_psu,
    'inventory_function':      inventory_dell_powerconnect_psu,
    'service_description':     'Sensor %s',
    'has_perfdata':            False,
    'snmp_info':               [('.1.3.6.1.4.1.674.10895.3000.1.2.100.1', ['0']), #productIdentificationDisplayName
                                ('.1.3.6.1.4.1.674.10895.3000.1.2.110.7.2.1', [
                                   '1', # envMonSupplyStatusIndex
                                   '2', # envMonSupplyStatusDescr
                                   '3', # envMonSupplyState
                                   '4', # envMonSupplySource
                               ])],
    'snmp_scan_function':      lambda oid: ".1.3.6.1.4.1.674.10895" in oid(".1.3.6.1.2.1.1.2.0"),
}
