class Facter::Resolvers::Gce

Constants

HEADERS
METADATA_URL

Private Class Methods

extract_to_hash(metadata) click to toggle source
# File lib/facter/resolvers/gce.rb, line 31
def extract_to_hash(metadata)
  JSON.parse(metadata)
rescue JSON::ParserError => e
  log.debug("Trying to parse result but got: #{e.message}")
  {}
end
parse_instance(gce_data) click to toggle source
# File lib/facter/resolvers/gce.rb, line 38
def parse_instance(gce_data)
  instance_data = gce_data['instance']
  return if instance_data.nil? || instance_data.empty?

  # See https://cloud.google.com/compute/docs/metadata for information about these values
  %w[sshKeys ssh-keys].each do |name|
    keys = gce_data.dig('project', 'attributes', name)
    gce_data['project']['attributes'][name] = keys.strip.split("\n") if keys

    keys = instance_data.dig('attributes', name)
    instance_data['attributes'][name] = keys.strip.split("\n") if keys
  end

  %w[image machineType zone].each do |key|
    instance_data[key] = instance_data[key].split('/').last if instance_data[key]
  end

  network = instance_data.dig('networkInterfaces', 0, 'network')
  instance_data['networkInterfaces'][0]['network'] = network.split('/').last unless network.nil?

  gce_data['instance'] = instance_data
end
post_resolve(fact_name, _options) click to toggle source
# File lib/facter/resolvers/gce.rb, line 14
def post_resolve(fact_name, _options)
  log.debug('reading Gce metadata')
  @fact_list.fetch(fact_name) { read_facts(fact_name) }
end
query_for_metadata() click to toggle source
# File lib/facter/resolvers/gce.rb, line 24
def query_for_metadata
  gce_data = extract_to_hash(Facter::Util::Resolvers::Http.get_request(METADATA_URL, HEADERS, false))
  parse_instance(gce_data)

  gce_data.empty? ? nil : gce_data
end
read_facts(fact_name) click to toggle source
# File lib/facter/resolvers/gce.rb, line 19
def read_facts(fact_name)
  @fact_list[:metadata] = query_for_metadata
  @fact_list[fact_name]
end