Munin contributed plugins

#!/usr/bin/env python3

"""

=head1 NAME

zcash_flypool_hashrate_ - Munin plugin to monitor your zcash.flypool.org hashrate (H/s)

=head1 APPLICABLE SYSTEMS

All systems with "python3" and "munin"

=head1 CONFIGURATION

zcash_flypool_hashrate_<YOUR_ZCASH_ADDRESS>_<YOUR_WORKER_NAME>

=head1 SYNOPSIS

  ln -s /usr/share/munin/plugins/zcash_flypool_hashrate_ \

  /etc/munin/plugins/zcash_flypool_hashrate_t1gMVWjGhdjvb71UU11JDrFmiZhgUf4x5TH_mine

=head1 INTERPRETATION

This plugin shows the zcash.flypool.org mining pool hashrate (H/s) of a given Zcasg address and rig name.

Hashrate is queried via Flypool API L<https://zcash.flypool.org>.

=head1 VERSION

0.0.1

=head1 AUTHOR

L<Nils Knieling|https://github.com/Cyclenerd>

=head1 LICENSE

GPLv2

=head1 MAGIC MARKERS

 #%# family=manual

=cut

"""

import sys

import json

import codecs

from urllib.request import urlopen

from urllib.request import Request

command = ''

if len(sys.argv) > 1:

    command = sys.argv[1]

try:

    zcash_address, miner = sys.argv[0].split("_")[3:]

except ValueError:

    print("The filename of this plugin (or its symlink) should follow this pattern: "

          "'zcash_flypool_hashrate_<YOUR_ZCASH_ADDRESS>_<YOUR_WORKER_NAME>'", file=sys.stderr)

    sys.exit(9)

if command == 'config':

    print("graph_title Flypool {}".format(miner))

    print("graph_info zcash.flypool.org Mining Pool Hashrate for {}_{}".format(zcash_address, miner))

    print("graph_vlabel Flypool Hashrate")

    print("graph_category htc")

    print("flypool_hs_{}_{}.warning 200:".format(zcash_address, miner))

    print("flypool_hs_{}_{}.critical 100:".format(zcash_address, miner))

    print("flypool_hs_{}_{}.label H/s:".format(zcash_address, miner))

    sys.exit(0)

flypool_api_url = 'https://api-zcash.flypool.org/miner/' + zcash_address + '/worker/' + miner + '/currentStats'

mining_req = Request(flypool_api_url)

# User-Agent to bypass Cloudflare

mining_req.add_header('User-Agent', 'Flypool Munin Plugin/1.0')

try:

    mining_stats_raw = urlopen(mining_req, timeout=15)

except IOError as exc:

    print("Failed to request Flypool API: {}".format(exc), file=sys.stderr)

    sys.exit(9)

hash_rate = "U"

try:

    mining_stats = json.loads(mining_stats_raw.read().decode("utf-8"))

except ValueError:

    print("Failed to parse JSON responce.", file=sys.stderr)

else:

    try:

        worker = mining_stats['data']

    except (KeyError, TypeError):

        print("JSON result error!", file=sys.stderr)

    else:

        try:

            hash_rate = worker['currentHashrate']

        except (KeyError, TypeError):

            print("No current Hashrate!", file=sys.stderr)

print("flypool_hs_{}_{}.value {}".format(zcash_address, miner, hash_rate))