MCollective::Facts::Base

    # File lib/mcollective/facts/base.rb, line 17
17:       def self.inherited(klass)
18:         PluginManager << {:type => "facts_plugin", :class => klass.to_s}
19:       end

    # File lib/mcollective/facts/base.rb, line 10
10:       def initialize
11:         @facts = {}
12:         @last_good_facts = {}
13:         @last_facts_load = 0
14:       end

    # File lib/mcollective/facts/base.rb, line 81
81:       def force_reload?
82:         false
83:       end

    # File lib/mcollective/facts/base.rb, line 22
22:       def get_fact(fact=nil)
23:         config = Config.instance
24: 
25:         cache_time = config.fact_cache_time || 300
26: 
27:         Thread.exclusive do
28:           begin
29:             if (Time.now.to_i - @last_facts_load > cache_time.to_i ) || force_reload?
30:               Log.debug("Resetting facter cache, now: #{Time.now.to_i} last-known-good: #{@last_facts_load}")
31: 
32:               tfacts = load_facts_from_source
33: 
34:               # Force reset to last known good state on empty facts
35:               raise "Got empty facts" if tfacts.empty?
36: 
37:               @facts.clear
38: 
39:               tfacts.each_pair do |key,value|
40:                 @facts[key.to_s] = value.to_s
41:               end
42: 
43:               @last_good_facts = @facts.clone
44:               @last_facts_load = Time.now.to_i
45:             else
46:               Log.debug("Using cached facts now: #{Time.now.to_i} last-known-good: #{@last_facts_load}")
47:             end
48:           rescue Exception => e
49:             Log.error("Failed to load facts: #{e.class}: #{e}")
50: 
51:             # Avoid loops where failing fact loads cause huge CPU
52:             # loops, this way it only retries once every cache_time
53:             # seconds
54:             @last_facts_load = Time.now.to_i
55: 
56:             # Revert to last known good state
57:             @facts = @last_good_facts.clone
58:           end
59:         end
60: 
61: 
62:         # If you do not supply a specific fact all facts will be returned
63:         if fact.nil?
64:           return @facts
65:         else
66:           @facts.include?(fact) ? @facts[fact] : nil
67:         end
68:       end

    # File lib/mcollective/facts/base.rb, line 71
71:       def get_facts
72:         get_fact(nil)
73:       end

    # File lib/mcollective/facts/base.rb, line 76
76:       def has_fact?(fact)
77:         get_fact(nil).include?(fact)
78:       end