module Ohai::Mixin::Ec2Metadata

# File lib/ohai/mixin/ec2_metadata.rb, line 32
def can_metadata_connect?(addr, port, timeout=2)
  t = Socket.new(Socket::Constants::AF_INET, Socket::Constants::SOCK_STREAM, 0)
  saddr = Socket.pack_sockaddr_in(port, addr)
  connected = false

  begin
    t.connect_nonblock(saddr)
  rescue Errno::EINPROGRESS
    r,w,e = IO::select(nil,[t],nil,timeout)
    if !w.nil?
      connected = true
    else
      begin
        t.connect_nonblock(saddr)
      rescue Errno::EISCONN
        t.close
        connected = true
      rescue SystemCallError
      end
    end
  rescue SystemCallError
  end
  Ohai::Log.debug("can_metadata_connect? == #{connected}")
  connected
end

# File lib/ohai/mixin/ec2_metadata.rb, line 62
def fetch_metadata(id='')
  metadata = Hash.new
  http_client.get("#{EC2_METADATA_URL}/#{id}").body.split("\n").each do |o|
    key = "#{id}#{o.gsub(/\=.*$/, '/')}"
    if key[-1..-1] != '/'
      metadata[key.gsub(/\-|\//, '_').to_sym] =
        if EC2_ARRAY_VALUES.include? key
          http_client.get("#{EC2_METADATA_URL}/#{key}").body.split("\n")
        else
          http_client.get("#{EC2_METADATA_URL}/#{key}").body
        end
    else
      fetch_metadata(key).each{|k,v| metadata[k] = v}
    end
  end
  metadata
end

# File lib/ohai/mixin/ec2_metadata.rb, line 80
def fetch_userdata()
  response = http_client.get("#{EC2_USERDATA_URL}/")
  response.code == "200" ? response.body : nil
end

# File lib/ohai/mixin/ec2_metadata.rb, line 58
def http_client
  Net::HTTP.start(EC2_METADATA_ADDR).tap {|h| h.read_timeout = 600}
end