Class: Facter::Util::Loader

Inherits:
Object
  • Object
show all
Defined in:
lib/facter/util/loader.rb

Overview

Load facts on demand.

Instance Method Summary collapse

Constructor Details

#initialize(environment_vars = ENV) ⇒ Loader

Returns a new instance of Loader.



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# File 'lib/facter/util/loader.rb', line 8

def initialize(environment_vars = ENV)
  @loaded = []
  @environment_vars = environment_vars
end

Instance Method Details

#load(fact) ⇒ Object

Load all resolutions for a single fact.

Parameters:



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# File 'lib/facter/util/loader.rb', line 17

def load(fact)
  # Now load from the search path
  shortname = fact.to_s.downcase
  load_env(shortname)

  filename = shortname + ".rb"

  paths = search_path
  unless paths.nil?
    paths.each do |dir|
      # Load individual files
      file = File.join(dir, filename)

      load_file(file) if File.file?(file)
    end
  end
end

#load_all ⇒ Object

Load all facts from all directories.



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# File 'lib/facter/util/loader.rb', line 38

def load_all
  return if defined?(@loaded_all)

  load_env

  paths = search_path
  unless paths.nil?
    paths.each do |dir|
      # dir is already an absolute path
      Dir.glob(File.join(dir, '*.rb')).each do |path|
        # exclude dirs that end with .rb
        load_file(path) if File.file?(path)
      end
    end
  end

  @loaded_all = true
end

#search_path ⇒ Array<String>

List directories to search for fact files.

Search paths are gathered from the following sources:

  1. $LOAD_PATH entries are expanded to absolute paths

  2. ENV is split and used verbatim

  3. Entries from Facter.search_path are used verbatim

A warning will be generated for paths in Facter.search_path that are not absolute directories.

Returns:



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# File 'lib/facter/util/loader.rb', line 70

def search_path
  search_paths = []
  search_paths += $LOAD_PATH.map { |path| File.expand_path('facter', path) }

  if @environment_vars.include?("FACTERLIB")
    search_paths += @environment_vars["FACTERLIB"].split(File::PATH_SEPARATOR)
  end

  search_paths.delete_if { |path| ! valid_search_path?(path) }

  Facter.search_path.each do |path|
    if valid_search_path?(path)
      search_paths << path
    else
      Facter.warn "Excluding #{path} from search path. Fact file paths must be an absolute directory"
    end
  end

  search_paths.delete_if { |path| ! File.directory?(path) }

  search_paths.uniq
end