Module: Facter

Includes:
Comparable, Enumerable
Defined in:
lib/facter.rb,
lib/facter/util/values.rb,
lib/facter/application.rb

Overview

A util module for facter containing helper methods

Defined Under Namespace

Modules: Application, Manufacturer, Memory, NetMask, Util

Constant Summary

FACTERVERSION = 
'1.6.0'
GREEN = 
""
RESET = 
""
@@debug = 
0
@@timing = 
0
@@messages = 
{}

Class Method Summary (collapse)

Class Method Details

+ (Object) [](name)

Return a fact object by name. If you use this, you still have to call 'value' on it to retrieve the actual value.



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# File 'lib/facter.rb', line 90

def self.[](name)
    collection.fact(name)
end

+ (Object) add(name, options = {}, &block)

Add a resolution mechanism for a named fact. This does not distinguish between adding a new fact and adding a new way to resolve a fact.



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# File 'lib/facter.rb', line 112

def self.add(name, options = {}, &block)
    collection.add(name, options, &block)
end

+ (Object) clear

Clear all facts. Mostly used for testing.



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# File 'lib/facter.rb', line 157

def self.clear
    Facter.flush
    Facter.reset
end

+ (Object) collection

module methods



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# File 'lib/facter.rb', line 53

def self.collection
    unless defined?(@collection) and @collection
        @collection = Facter::Util::Collection.new
    end
    @collection
end

+ (Object) debug(string)

Add some debugging



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# File 'lib/facter.rb', line 66

def self.debug(string)
    if string.nil?
        return
    end
    if self.debugging?
        puts GREEN + string + RESET
    end
end

+ (Object) debugging(bit)

Set debugging on or off.



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# File 'lib/facter.rb', line 163

def self.debugging(bit)
    if bit
        case bit
        when TrueClass; @@debug = 1
        when FalseClass; @@debug = 0
        when Fixnum
            if bit > 0
                @@debug = 1
            else
                @@debug = 0
            end
        when String;
            if bit.downcase == 'off'
                @@debug = 0
            else
                @@debug = 1
            end
        else
            @@debug = 0
        end
    else
        @@debug = 0
    end
end

+ (Boolean) debugging?

Returns:

  • (Boolean) 


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# File 'lib/facter.rb', line 75

def self.debugging?
    @@debug != 0
end

+ (Object) each 



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# File 'lib/facter.rb', line 116

def self.each
    # Make sure all facts are loaded.
    collection.load_all

    collection.each do |*args|
        yield(*args)
    end
end

+ (Object) loadfacts

Load all of the default facts, and then everything from disk.



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# File 'lib/facter.rb', line 226

def self.loadfacts
    collection.load_all
end

+ (Object) method_missing(name, *args)

Allow users to call fact names directly on the Facter class, either retrieving the value or comparing it to an existing value.



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# File 'lib/facter.rb', line 128

def method_missing(name, *args)
    question = false
    if name.to_s =~ /\?$/
        question = true
        name = name.to_s.sub(/\?$/,'')
    end

    if fact = collection.fact(name)
        if question
            value = fact.value.downcase
            args.each do |arg|
                if arg.to_s.downcase == value
                    return true
                end
            end

            # If we got this far, there was no match.
            return false
        else
            return fact.value
        end
    else
        # Else, fail like a normal missing method.
        raise NoMethodError, "Could not find fact '%s'" % name
    end
end

+ (Object) reset

Remove them all.



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# File 'lib/facter.rb', line 221

def self.reset
    @collection = nil
end

+ (Object) search(*dirs)

Register a directory to search through.



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# File 'lib/facter.rb', line 233

def self.search(*dirs)
    @search_path += dirs
end

+ (Object) search_path

Return our registered search directories.



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# File 'lib/facter.rb', line 238

def self.search_path
    @search_path.dup
end

+ (Object) show_time(string)

show the timing information



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# File 'lib/facter.rb', line 80

def self.show_time(string)
    puts "#{GREEN}#{string}#{RESET}" if string and Facter.timing?
end

+ (Object) timing(bit)

Set timing on or off.



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# File 'lib/facter.rb', line 189

def self.timing(bit)
    if bit
        case bit
        when TrueClass; @@timing = 1
        when Fixnum
            if bit > 0
                @@timing = 1
            else
                @@timing = 0
            end
        end
    else
        @@timing = 0
    end
end

+ (Boolean) timing?

Returns:

  • (Boolean) 


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# File 'lib/facter.rb', line 84

def self.timing?
    @@timing != 0
end

+ (Object) version

Return the version of the library.



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# File 'lib/facter.rb', line 61

def self.version
    return FACTERVERSION
end

+ (Object) warn(msg) 



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# File 'lib/facter.rb', line 205

def self.warn(msg)
    if Facter.debugging? and msg and not msg.empty?
        msg = [msg] unless msg.respond_to? :each
        msg.each { |line| Kernel.warn line }
    end
end

+ (Object) warnonce(msg)

Warn once.



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# File 'lib/facter.rb', line 213

def self.warnonce(msg)
    if msg and not msg.empty? and @@messages[msg].nil?
        @@messages[msg] = true
        Kernel.warn(msg)
    end
end