Consul Hash Retrieval

get.rb

#!/usr/bin/env ruby

require 'base64'
require 'deep_merge'
require 'json'
require 'net/http'
require 'pp'

uri = URI("http://localhost:8500/v1/kv/#{ARGV[0]}?recurse")
raw = JSON.parse(Net::HTTP.get(uri))

data = raw.inject({}) do |res, x|
  # Split the keys up, decode, and return all but the first element
  # e.g. 'host/vars/architecture' => ['vars', 'architecture']
  path = x['Key'].split('/').collect{|x| URI.unescape(x)}[1..-1]
  # Value is always base 64 encoded
  # e.g. 'YW1kNjQ=' => 'amd64'
  value = Base64.decode64(x['Value'])
  # Build a nested hash from the path and value
  # e.g. { 'vars' => { 'architecture' => 'amd64' }}
  res.deep_merge!(path.reverse.inject(value){|x, y| { y => x }})
end

pp data