Munin contributed plugins

#!/usr/bin/env python3

"""

=head1 NAME

mongodb_conn - MongoDB Connection Count Plugin

=head1 APPLICABLE SYSTEMS

MongoDB 3.X and 4.X with pymongo installed.

=head1 CONFIGURATION

Default for host is 127.0.0.1 and port 27017 and will work without being defined:

    [mongodb_conn]

    env.host 127.0.0.1

    env.port 27017

    env.username user

    env.password P@55w0rd

or

    [mongodb_conn]

    env.MONGO_DB_URI mongodb://user:passwd@127.0.0.1:27017

=head1 AUTHOR

Alban Espie-Guillon <alban.espie@alterway.fr>

based on Stefan Andersen <stefan@stefanandersen.dk> work.

=head1 LICENSE

The Beer Ware License (Revision 42)

<alban.espie@alterway.fr> wrote this file. As long

as you retain this notice you can do whatever you want

with this stuff. If we meet some day, and you think

this stuff is worth it, you can buy me a beer in return.

SPDX-License-Identifier: Beerware

=cut

"""

import os

import sys

import pymongo

def _get_connections():

    if 'MONGO_DB_URI' in os.environ:

        conn = pymongo.MongoClient(os.environ['MONGO_DB_URI'])

    else:

        host = os.environ.get('host', '127.0.0.1')

        port = os.environ.get('port', 27017)

        username = os.environ.get('username', '')

        password = os.environ.get('password', '')

        conn = pymongo.MongoClient(host, int(port))

        if username:

            connAuth = conn['admin']

            connAuth.authenticate(username, password)

    """ cli : db.serverStatus().connections """

    conn_status = conn.admin.command("serverStatus")['connections']

    return conn_status

def run():

    connections = _get_connections()

    for c, v in connections.items():

        print(str(c) + ".value " + str(v))

def config():

    print("""

graph_title MongoDB Connections Count

graph_vlabel Connections count

graph_category db

graph_args --base 1000 -l 0

current.label current

current.draw AREASTACK

available.label available

available.draw AREASTACK

active.label active

active.draw AREASTACK

""")

if __name__ == "__main__":

    if len(sys.argv) > 1 and sys.argv[1] == "config":

        config()

    else:

        run()