Mercurial > repos > other > Puppet
view modules/stdlib/lib/facter/facter_dot_d.rb @ 272:c42fb28cff86
Update to a newer Python module
This also pulls in an EPEL module (which we don't use) and a newer
stdlib version.
author | IBBoard <dev@ibboard.co.uk> |
---|---|
date | Fri, 03 Jan 2020 19:56:04 +0000 |
parents | addb0ea390a1 |
children | d9352a684e62 |
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# A Facter plugin that loads facts from /etc/facter/facts.d # and /etc/puppetlabs/facter/facts.d. # # Facts can be in the form of JSON, YAML or Text files # and any executable that returns key=value pairs. # # In the case of scripts you can also create a file that # contains a cache TTL. For foo.sh store the ttl as just # a number in foo.sh.ttl # # The cache is stored in $libdir/facts_dot_d.cache as a mode # 600 file and will have the end result of not calling your # fact scripts more often than is needed class Facter::Util::DotD require 'yaml' def initialize(dir = '/etc/facts.d', cache_file = File.join(Puppet[:libdir], 'facts_dot_d.cache')) @dir = dir @cache_file = cache_file @cache = nil @types = { '.txt' => :txt, '.json' => :json, '.yaml' => :yaml } end def entries Dir.entries(@dir).reject { |f| f =~ %r{^\.|\.ttl$} }.sort.map { |f| File.join(@dir, f) } rescue [] end def fact_type(file) extension = File.extname(file) type = @types[extension] || :unknown type = :script if type == :unknown && File.executable?(file) type end def txt_parser(file) File.readlines(file).each do |line| next unless line =~ %r{^([^=]+)=(.+)$} var = Regexp.last_match(1) val = Regexp.last_match(2) Facter.add(var) do setcode { val } end end rescue StandardError => e Facter.warn("Failed to handle #{file} as text facts: #{e.class}: #{e}") end def json_parser(file) begin require 'json' rescue LoadError retry if require 'rubygems' raise end JSON.parse(File.read(file)).each_pair do |f, v| Facter.add(f) do setcode { v } end end rescue StandardError => e Facter.warn("Failed to handle #{file} as json facts: #{e.class}: #{e}") end def yaml_parser(file) require 'yaml' YAML.load_file(file).each_pair do |f, v| Facter.add(f) do setcode { v } end end rescue StandardError => e Facter.warn("Failed to handle #{file} as yaml facts: #{e.class}: #{e}") end def script_parser(file) result = cache_lookup(file) ttl = cache_time(file) if result Facter.debug("Using cached data for #{file}") else result = Facter::Util::Resolution.exec(file) if ttl > 0 Facter.debug("Updating cache for #{file}") cache_store(file, result) cache_save! end end result.split("\n").each do |line| next unless line =~ %r{^(.+)=(.+)$} var = Regexp.last_match(1) val = Regexp.last_match(2) Facter.add(var) do setcode { val } end end rescue StandardError => e Facter.warn("Failed to handle #{file} as script facts: #{e.class}: #{e}") Facter.debug(e.backtrace.join("\n\t")) end def cache_save! cache = load_cache File.open(@cache_file, 'w', 0o600) { |f| f.write(YAML.dump(cache)) } rescue # rubocop:disable Lint/HandleExceptions end def cache_store(file, data) load_cache @cache[file] = { :data => data, :stored => Time.now.to_i } rescue # rubocop:disable Lint/HandleExceptions end def cache_lookup(file) cache = load_cache return nil if cache.empty? ttl = cache_time(file) return nil unless cache[file] now = Time.now.to_i return cache[file][:data] if ttl == -1 return cache[file][:data] if (now - cache[file][:stored]) <= ttl return nil rescue return nil end def cache_time(file) meta = file + '.ttl' return File.read(meta).chomp.to_i rescue return 0 end def load_cache @cache ||= if File.exist?(@cache_file) YAML.load_file(@cache_file) else {} end return @cache rescue @cache = {} return @cache end def create entries.each do |fact| type = fact_type(fact) parser = "#{type}_parser" next unless respond_to?("#{type}_parser") Facter.debug("Parsing #{fact} using #{parser}") send(parser, fact) end end end mdata = Facter.version.match(%r{(\d+)\.(\d+)\.(\d+)}) if mdata (major, minor, _patch) = mdata.captures.map { |v| v.to_i } if major < 2 # Facter 1.7 introduced external facts support directly unless major == 1 && minor > 6 Facter::Util::DotD.new('/etc/facter/facts.d').create Facter::Util::DotD.new('/etc/puppetlabs/facter/facts.d').create # Windows has a different configuration directory that defaults to a vendor # specific sub directory of the %COMMON_APPDATA% directory. if Dir.const_defined? 'COMMON_APPDATA' # rubocop:disable Metrics/BlockNesting : Any attempt to alter this breaks it windows_facts_dot_d = File.join(Dir::COMMON_APPDATA, 'PuppetLabs', 'facter', 'facts.d') Facter::Util::DotD.new(windows_facts_dot_d).create end end end end