gistfile1.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'net/http'
require 'uri'
require 'json'
require 'facter'

uri = URI.parse("http://localhost:8080/v3/commands")
http = Net::HTTP.new(uri.host, uri.port)

facts = {}
Facter.to_hash.each do |k,v|
  facts[k] = v.to_s
end

hostname = facts["fqdn"]

request = Net::HTTP::Post.new(uri.request_uri)
request.set_form_data(
  {
    "payload" => {
      "command" => "replace facts",
      "version" => 1,
      "payload" => {
        "name" => hostname,
        "values" => facts,
      }.to_json,
    }.to_json
  }
)

response = http.request(request)
puts response.body