#!/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.
#
# Example Output:
# .1.3.6.1.4.1.5951.4.1.1.23.3.0  1
# .1.3.6.1.4.1.5951.4.1.1.23.23.0  1
# .1.3.6.1.4.1.5951.4.1.1.23.24.0  3

netscaler_ha_cur_states = {
    0: ("unknown", 1),
    # 1 Indicates that the node is in the process of becoming part of the high
    #   availability configuration.
    1: ("initializing", 1),
    2: ("down", 2),  # undocumented
    # 3 Indicates that the node is accessible and can function as either
    #   a primary or secondary node.
    3: ("functional", 0),
    # 4 Indicates that one of the high availability monitored interfaces
    #   has failed because of a card or link failure. # This state triggers a
    #   failover.
    4: ("some HA monitored interfaces failed", 2),
    5: ("monitorFail", 1),  # undocumented
    6: ("monitorOK", 1),  # undocumented
    # 7 Indicates that all the interfaces of the node are
    #   unusable because the interfaces on which high
    #   availability monitoring is enabled are not connected
    #   or are manually disabled. This state triggers a failover.
    7: ("all HA monitored interfaces failed", 2),
    # 8 Indicates that the node is in listening mode. It does not
    #   participate in high availability transitions or transfer
    #   configuration from the peer node. This is a configured
    #   value, not a statistic.
    8: ("configured to listening mode (dumb)", 1),
    # 9 Indicates that the high availability status of the node has been
    #   manually disabled. Synchronization and propagation cannot take
    #   place between the peer nodes.
    9: ("HA status manually disabled", 1),
    # 10 Indicates that the SSL card has failed. This state triggers a failover.
    10: ("SSL card failed", 2),
    # 11 Indicates that the route monitor has failed. This state triggers
    #    a failover.
    11: ("route monitor has failed", 2),
}

netscaler_ha_peer_mode = {
    0: ("standalone", 0),
    1: ("primary", 0),
    2: ("secondary", 0),
    3: ("unknown", 1),
}


def inventory_netscaler_ha(info):
    if info:
        return [(None, None)]


def check_netscaler_ha(_no_item, _no_params, info):
    if info:
        state = 0
        peer_state, cur_status, cur_state = map(int, info[0])
        if cur_status == 0:
            infotext = "System not setup for HA"
        else:
            infotext = "State: %s, Neighbour: %s" % (
                netscaler_ha_cur_states[cur_state][0],
                netscaler_ha_peer_mode[peer_state][0],
            )
            state = max(netscaler_ha_cur_states[cur_state][1],
                        netscaler_ha_peer_mode[peer_state][1])

        return state, infotext


check_info["netscaler_ha"] = {
    "check_function": check_netscaler_ha,
    "inventory_function": inventory_netscaler_ha,
    "service_description": "HA Node Status",
    "snmp_info": (
        ".1.3.6.1.4.1.5951.4.1.1.23",
        [  # nsHighAvailabilityGroup
            3,  # haPeerState
            23,  # haCurStatus
            24,  # haCurState
        ]),
    "snmp_scan_function": lambda oid: oid(".1.3.6.1.2.1.1.2.0").startswith(".1.3.6.1.4.1.5951.1"),
}
