module Ohai::Mixin::AlibabaMetadata

This code parses the Alibaba Instance Metadata API to provide details of the running instance.

Note: As of 2021-02-07 there is only one API release so we’re not implementing logic like the ec2 or azure mixins where we have to find the latest supported release

Public Instance Methods

fetch_metadata(id = "", is_directory = true) click to toggle source
# File lib/ohai/mixin/alibaba_metadata.rb, line 44
def fetch_metadata(id = "", is_directory = true)
  response = http_get(id)
  if response.code == "200"

    if !is_directory
      json_data = parse_json(response.body)
      if json_data.nil?
        response.body
      else
        json_data
      end
    elsif is_directory
      temp = {}
      response.body.split("\n").each do |sub_attr|
        if "#{id}/#{sub_attr}" != "/user-data"
          uri = id == "" ? "#{id}#{sub_attr}/" : "#{id}#{sub_attr}"
          temp[sanitize_key(sub_attr).gsub(/_$/, "")] = fetch_metadata(uri, has_trailing_slash?(uri))
        end
      end
      temp
    end
  else
    logger.warn("Mixin AlibabaMetadata: 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/alibaba_metadata.rb, line 74
def has_trailing_slash?(data)
  !!(data =~ %r{/$})
end
http_get(uri) click to toggle source
# File lib/ohai/mixin/alibaba_metadata.rb, line 37
def http_get(uri)
  conn = Net::HTTP.start(ALI_METADATA_ADDR)
  conn.read_timeout = 6
  conn.keep_alive_timeout = 6
  conn.get("/2016-01-01/#{uri}", { "User-Agent" => "chef-ohai/#{Ohai::VERSION}" })
end
sanitize_key(key) click to toggle source
# File lib/ohai/mixin/alibaba_metadata.rb, line 78
def sanitize_key(key)
  key.gsub(%r{\-|/}, "_")
end