bosh-lite-discover

#!/usr/bin/env ruby

require 'rubygems'
require 'json'
require "nats/client"

def command_available?(cmd)
    `command -v #{cmd} >/dev/null 2>&1`
    $?.success?
end

messages = []
NATS.start(:uri => 'nats://nats:nats@10.244.0.6:4222', :autostart => true) do
    inbox = NATS.create_inbox
    sub_id = NATS.subscribe(inbox) do |message, _, sub| 
        messages << Yajl::Parser.parse(message)
    end
    NATS.timeout(sub_id, 1, :expected => 1024) { NATS.stop }
    NATS.publish('vcap.component.discover', '', inbox)
end

messages.each do |msg|
    if command_available?("jq") && $stdout.tty?
        puts `echo '#{msg.to_json}' | jq -C .`
    else
        puts JSON.pretty_generate(msg)
    end
end