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February 9, 2017 17:24
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Reads metrics that Finagle exposes on a port and converts them into Graphite format.
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#!/usr/bin/env ruby | |
# | |
# This script gets Finagle metrics from various applications | |
# Written By: https://github.com/elocnatsirt | |
# Options: | |
# -h = host that you want to query - defaults to localhost | |
# -p = port of the nimbus node you want to query - defaults to 9990 | |
require 'socket' | |
require 'English' | |
require 'sensu-plugin/metric/cli' | |
class FinagleMetrics < Sensu::Plugin::Metric::CLI::Graphite | |
option :host, | |
short: '-h URL', | |
long: '--host URL', | |
description: 'valid url to connect', | |
default: 'localhost' | |
option :port, | |
short: '-p PORT', | |
long: '--port PORT', | |
description: 'port to connect', | |
default: '9990' | |
option :scheme, | |
description: 'Metric naming scheme, text to prepend to metric', | |
short: '-s SCHEME', | |
long: '--scheme SCHEME', | |
required: true, | |
default: "#{Socket.gethostname}.finagle_metrics" | |
def run | |
cmd = "curl --silent #{config[:host]}:#{config[:port]}/admin/metrics.json?pretty=true | sed 's/[{}]//g;/^\s*$/d;s/,//;s/\"//g;s/ //g'" | |
metrics = `#{cmd}` | |
time = Time.now.to_i | |
metrics.each_line do |metric| | |
(metric_name, metric_total) = metric.split(':') | |
puts "#{config[:scheme]}.#{metric_name} #{metric_total.chomp} #{time}" | |
end | |
if $CHILD_STATUS.to_i == 0 | |
ok | |
else | |
warning | |
end | |
end | |
end |
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I wrote this to get finagle metrics from our various applications that expose them. The metrics are read from a page that displays them in a JSON structure and just has basic key/value pairs and transforms them into the graphite format. In theory you could use this for any anything that outputs data in that basic format; however it will not handle any nested structures inside the main one.