#!/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.


def inventory_dell_om_mem(info):
    return [(x[0], None) for x in info]


# DellMemoryDeviceFailureModes                    ::= INTEGER {
#     -- Note: These values are bit masks, so combination values are possible.
#     -- If value is 0 (zero), memory device has no faults.
#     eccSingleBitCorrectionWarningRate(1),       -- ECC single bit correction warning rate exceeded
#     eccSingleBitCorrectionFailureRate(2),       -- ECC single bit correction failure rate exceeded
#     eccMultiBitFault(4),                        -- ECC multibit fault encountered
#     eccSingleBitCorrectionLoggingDisabled(8),   -- ECC single bit correction logging disabled
#     deviceDisabledBySpareActivation(16)         -- device disabled because of spare activation


def check_dell_om_mem(item, _no_params, info):
    failure_modes = {
        1: 'ECC single bit correction warning rate exceeded',
        2: 'ECC single bit correction failure rate exceeded',
        4: 'ECC multibit fault encountered',
        8: 'ECC single bit correction logging disabled',
        16: 'device disabled because of spare activation',
    }

    for location, status, size, failuremode in info:
        if location == item:
            status = int(status)
            failuremode = int(failuremode)
            if failuremode == 0:
                yield 0, "No failure"
            else:
                bitmask = 1
                while bitmask <= 16:
                    if failuremode & bitmask != 0:
                        if bitmask in [2, 4]:
                            yield 2, failure_modes[bitmask]
                        elif bitmask in [1, 8, 16]:
                            yield 1, failure_modes[bitmask]
                    bitmask *= 2

            yield 0, "Size: %s" % get_bytes_human_readable(int(size) * 1024)


check_info["dell_om_mem"] = {
    "check_function": check_dell_om_mem,
    "inventory_function": inventory_dell_om_mem,
    "service_description": "Memory Module %s",
    # There is no other way to find out that openmanage is present.
    "snmp_scan_function": scan_dell_om,
    "snmp_info": (
        ".1.3.6.1.4.1.674.10892.1.1100.50.1",
        [
            "8.1",  # Location
            "5.1",  # Status
            "14.1",  # Size
            "20.1",  # FailureMode
        ]),
    "includes": ["dell_om.include"],
}
