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# frozen_string_literal: true
#
# loadyaml.rb
#
module Puppet::Parser::Functions
newfunction(:loadyaml, type: :rvalue, arity: -2, doc: <<-DOC) do |args|
@summary
Load a YAML file containing an array, string, or hash, and return the data
in the corresponding native data type.
The first parameter can be a file path or a URL.
The second parameter is the default value. It will be returned if the file
was not found or could not be parsed.
@return [Array|String|Hash]
The data stored in the YAML file, the type depending on the type of data that was stored.
@example Example Usage:
$myhash = loadyaml('/etc/puppet/data/myhash.yaml')
$myhash = loadyaml('https://example.local/my_hash.yaml')
$myhash = loadyaml('https://username:password@example.local/my_hash.yaml')
$myhash = loadyaml('no-file.yaml', {'default' => 'value'})
DOC
raise ArgumentError, 'Wrong number of arguments. 1 or 2 arguments should be provided.' unless args.length >= 1
require 'yaml'
require 'open-uri'
begin
if args[0].start_with?('http://', 'https://')
username = ''
password = ''
if (match = args[0].match(%r{(http://|https://)(.*):(.*)@(.*)}))
# If URL is in the format of https://username:password@example.local/my_hash.yaml
protocol, username, password, path = match.captures
url = "#{protocol}#{path}"
elsif (match = args[0].match(%r{(http://|https://)(.*)@(.*)}))
# If URL is in the format of https://username@example.local/my_hash.yaml
protocol, username, path = match.captures
url = "#{protocol}#{path}"
else
url = args[0]
end
begin
contents = OpenURI.open_uri(url, http_basic_authentication: [username, password])
rescue OpenURI::HTTPError => e
res = e.io
warning("Can't load '#{url}' HTTP Error Code: '#{res.status[0]}'")
args[1]
end
YAML.safe_load(contents, aliases: true) || args[1]
elsif File.exist?(args[0])
# Read the file first rather than calling YAML.load_file as ruby2.7
# doesn't support the aliases option on YAML.load_file
contents = File.read(args[0])
YAML.safe_load(contents, aliases: true) || args[1]
else
warning("Can't load '#{args[0]}' File does not exist!")
args[1]
end
rescue StandardError => e
raise e unless args[1]
args[1]
end
end
end
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