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contrib-munin/plugins/currency/ethereum/etherscan_balance_

118 lines
2.8 KiB
Python
Executable File

#!/usr/bin/env python3
"""
=head1 NAME
etherscan_balance_ - Munin plugin to monitor your ethereum (ETH) balance
=head1 APPLICABLE SYSTEMS
All systems with "python" and "munin"
=head1 CONFIGURATION
etherscan_balance_<YOUR_PUBLIC_ETHEREUM_ADDRESS>
=head1 SYNOPSIS
ln -s /usr/share/munin/plugins/etherscan_balance_ \
/etc/munin/plugins/etherscan_balance_0x3257bde8cf067ae6f1ddc0e4b140fe02e3c5e44f
=head1 INTERPRETATION
This plugin shows the ether balance (ETH) of a given ethereum address.
Account balance is queried via etherscan.io API L<https://etherscan.io/apis>.
=head1 VERSION
0.0.1
=head1 AUTHOR
L<Nils Knieling|https://github.com/Cyclenerd>
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=manual
=cut
"""
from __future__ import print_function
import sys
import json
import codecs
try:
# python3
from urllib.request import urlopen
from urllib.request import Request
except ImportError:
# python2
from urllib2 import urlopen
from urllib2 import Request
command = ''
if len(sys.argv) > 1:
command = sys.argv[1]
api_action, eth_address = sys.argv[0].split("_")[1:]
if not eth_address:
print("The filename of this plugin (or its symlink) should follow this pattern: "
"'etherscan_balance_<YOUR_PUBLIC_ETHEREUM_ADDRESS>'", file=sys.stderr)
sys.exit(9)
"""
API result is in Wei. Convert Wei to Ether (ETH) via 'fieldname.cdef'
1 : Wei
10^12 : Szabo
10^15 : Finney
10^18 : Ether
233874700000000000000000 Wei = 233,874.7 Ether
"""
if command == 'config':
print("graph_title Ether {}".format(eth_address))
print("graph_info Ethereum Account Balance for Address {}".format(eth_address))
print("graph_vlabel Ethereum Balance")
print("graph_category htc")
print("wei_balance_{0}.cdef wei_balance_{0},1000000000000000000,/".format(eth_address))
print("wei_balance_{}.label ETH".format(eth_address))
sys.exit(0)
ethercan_balance_api_url = ('https://api.etherscan.io/api'
'?module=account&action=balance&tag=latest&address=' + eth_address)
etherscan_req = Request(ethercan_balance_api_url)
# User-Agent to bypass Cloudflare
etherscan_req.add_header('User-Agent', 'Etherscan Munin Plugin/1.0')
try:
etherscan_balance_raw = urlopen(etherscan_req, timeout=15)
except IOError as exc:
print("Failed to request etherscan.io API: {}".format(exc), file=sys.stderr)
sys.exit(9)
reader = codecs.getreader("utf-8")
try:
etherscan_balance = json.load(reader(etherscan_balance_raw))
except ValueError:
# Error in decoding operation or in JSON parsing throw a ValueError
print("Failed to parse JSON response.", file=sys.stderr)
sys.exit(9)
try:
eth = int(etherscan_balance['result'])
except (KeyError, ValueError) as exc:
print("JSON result error!", file=sys.stderr)
sys.exit(9)
print("wei_balance_{}.value {}".format(eth_address, eth))