#!/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.

# <<<postgres_query_duration>>>
# [databases_start]
# postgres
# testdb
# datenbank
# [databases_end]
# datname;datid;usename;client_addr;state;seconds;pid;current_query
# postgres;12068;postgres;;active;0;12631;SELECT datname, datid, usename, ....

def inventory_postgres_query_duration(parsed):
    for entry in parsed.keys():
        yield entry, {}

def check_postgres_query_duration(item, _no_params, parsed):
    longest_time = -1
    longest_info = None

    database = parsed.get(item)
    if database == None:
        return

    for element in database:
        if int(element["seconds"]) > longest_time:
            longest_info = element
            longest_time = int(element["seconds"])

    if longest_info:
        yield 0, "Longest query is %s seconds" % longest_info["seconds"]
        if longest_info["usename"]:
            yield 0, "Username: %s" % longest_info["usename"]
        if longest_info["client_addr"]:
            yield 0, "Client: %s" % longest_info["client_addr"]
        if longest_info["state"].lower() != "active":
            yield 0, "Query state: %s" % longest_info["state"]
        yield 0, "PID: %s" %   longest_info["pid"]
        yield 0, "Query: %s" % longest_info["current_query"]
    else:
        yield 0, "No query is running"

check_info['postgres_query_duration'] = {
    "parse_function"          : parse_postgres_dbs,
    "check_function"          : check_postgres_query_duration,
    "inventory_function"      : inventory_postgres_query_duration,
    "service_description"     : "PostgreSQL Query Duration %s",
    "includes"                : [ "postgres.include" ]
}
