#!/usr/bin/python
# -*- encoding: utf-8; py-indent-offset: 4 -*-
# +------------------------------------------------------------------+
# |             ____ _               _        __  __ _  __           |
# |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
# |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
# |           | |___| | | |  __/ (__|   <    | |  | | . \            |
# |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
# |                                                                  |
# | Copyright Mathias Kettner 2010             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-
# 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.





# netappFiler(1)
# netappClusteredFiler(3)
#                sysStat(2) cf(3)     cfSettings(1)
#                                     cfState(2)
#                                     cfCannotTakeoverCause(3)
#                                     cfPartnerStatus(4)
#                                     cfPartnerName(6)
#                                     cfInterconnectStatus(8)
# SNMPv2-SMI::enterprises.789.1.2.3.1.0 = INTEGER: 2
# SNMPv2-SMI::enterprises.789.1.2.3.2.0 = INTEGER: 2
# SNMPv2-SMI::enterprises.789.1.2.3.3.0 = INTEGER: 1
# SNMPv2-SMI::enterprises.789.1.2.3.4.0 = INTEGER: 2
# SNMPv2-SMI::enterprises.789.1.2.3.6.0 = STRING: "ZMUCFB"
# SNMPv2-SMI::enterprises.789.1.2.3.8.0 = INTEGER: 4



def inventory_netapp_cluster(info):

    inventory = []

    # only inventorizes clusters that dont have takeover disabled.
    cfSettings, cfState, cfCannotTakeoverCause, cfPartnerStatus, cfPartnerName, cfInterconnectStatus = info[0]
    if int(cfSettings) not in [1, 3]:
        # Include the cluster partner name in inventory (value added data)
        inventory.append ([cfPartnerName, None])
    return inventory

def check_netapp_cluster(item, _no_params, info):

    cfSettings, cfState, cfCannotTakeoverCause, cfPartnerStatus, cfPartnerName, cfInterconnectStatus = info[0]


    # first handle all critical states.
    # "dead" and "thisNodeDead"
    if   cfState == "1" or cfSettings == "5":
        return (2, "CRIT - Node is declared dead by cluster")
    elif cfPartnerStatus in [1, 3]:
        return (2, "CRIT - Partner Status is dead or maybeDown")
    elif cfInterconnectStatus == "2":
        return (2, "CRIT - Cluster Interconnect failure")


    # then handle warnings.
    elif cfSettings in [3, 4] or cfState == "3":
        return (1, "WARN - Cluster takeover is disabled")
    elif cfInterconnectStatus == "partialFailure":
        return (1, "WARN - Cluster interconnect partially failed")

    # if the partner name has changed, we'd like to issue a warning
    if cfPartnerName != item:
        return (1, "WARN - Partner Name %s instead of %s") % (cfPartnerName, item)

    # OK - Cluster enabled, Cluster can takeover and the partner is OK and the
    # infiniband interconnect is working.
    if cfSettings == "2" and cfState == "2" \
        and cfCannotTakeoverCause == "1" and cfPartnerStatus == "2" \
        and cfInterconnectStatus == "4":
        return (0, "OK - Cluster Status is OK")

    # if we reach here, we hit an unknown case.
    return (3, "UNKNOWN")



snmp_info["netapp_cluster"] = \
    ( ".1.3.6.1.4.1.789.1.2.3", [
       "1", # cfSettings
       "2", # cfState
       "3", # cfCannotTakeoverCause
       "4", # cfPartnerStatus
       "6", # cfPartnerName
       "8"  # cfInterconnectStatus
    ])


check_info["netapp_cluster"] = (check_netapp_cluster, "metrocluster_w_%s", 0, inventory_netapp_cluster)


# Run inventory only on Data Ontap OS with cluster enabled
snmp_scan_functions["netapp_cluster"] = \
    lambda oid: "netapp release" in oid(".1.3.6.1.2.1.1.1.0").lower()
