Plot GitHub API rate limit usage with gnuplot.

github.rb

#!/usr/bin/env ruby
# gem install httparty
require "httparty"

trap "SIGINT" do
  STDERR.write "\nBye!"
  exit 1
end

while true
  begin
    r = HTTParty.get("https://gh-rss.herokuapp.com/ratelimit", format: :json)

    if r.success?
      data = r.parsed_response
      remaining = data["remaining"] || "5000"
      puts "#{Time.now.to_i} #{remaining}"
      STDOUT.flush
    end

    sleep 10
  rescue => e
    STDERR.puts "Error: #{e}."
    sleep 10
  end
end

github.sh

#!/bin/bash
# empty line to indicate a break in the data
echo "" >> github.dat
./github.rb >> github.dat

gnuplot

#!/usr/bin/env gnuplot

set terminal png size 900, 300
set output "github.png"

set xdata time
set timefmt "%s"

set grid
set xtics 3600

plot [:][:] "github.dat" using 1:2 title "GitHub API Limit" with lines