module Ohai::Mixin::GCEMetadata
Public Instance Methods
fetch_metadata(id = "")
click to toggle source
# File lib/ohai/mixin/gce_metadata.rb, line 41 def fetch_metadata(id = "") url = "#{GCE_METADATA_URL}/#{id}" url = "#{url}?recursive=true" if url.end_with?("/") response = http_get(url) if response.code == "200" json_data = parse_json(response.body) if json_data.nil? logger.warn("Mixin GCEMetadata: Metadata response is NOT valid JSON for id='#{id}'") if has_trailing_slash?(id) || (id == "") temp = {} response.body.split("\n").each do |sub_attr| temp[sanitize_key(sub_attr)] = fetch_metadata("#{id}#{sub_attr}") end temp else response.body end else json_data end else logger.warn("Mixin GCEMetadata: Received response code #{response.code} requesting metadata for id='#{id}'") nil end end
has_trailing_slash?(data)
click to toggle source
@param data [String]
@return [Boolean] is there a trailing /?
# File lib/ohai/mixin/gce_metadata.rb, line 70 def has_trailing_slash?(data) !!( data =~ %r{/$} ) end
http_get(uri)
click to toggle source
fetch the meta content with a timeout and the required header
# File lib/ohai/mixin/gce_metadata.rb, line 32 def http_get(uri) conn = Net::HTTP.start(GCE_METADATA_ADDR) conn.read_timeout = 6 conn.get(uri, { "Metadata-Flavor" => "Google", "User-Agent" => "chef-ohai/#{Ohai::VERSION}", }) end
sanitize_key(key)
click to toggle source
# File lib/ohai/mixin/gce_metadata.rb, line 74 def sanitize_key(key) key.gsub(%r{\-|/}, "_") end