Class: Junos::Ez::Facts::Keeper

Inherits:
Object
  • Object
show all
Defined in:
lib/junos-ez/facts.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(ndev) ⇒ Keeper

Returns a new instance of Keeper.



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# File 'lib/junos-ez/facts.rb', line 28

def initialize( ndev )
  @ndev = ndev
  @known = Hash.new
end

Instance Attribute Details

#known ⇒ Object

Returns the value of attribute known.



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# File 'lib/junos-ez/facts.rb', line 26

def known
  @known
end

Class Method Details

.define(fact, &block) ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 49

def self.define( fact, &block )
  define_method( "fact_read_#{fact}".to_sym, block )
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 57

def [](key)
  @known[key]
end

#[]=(key, value) ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 53

def []=(key,value)
  @known[key] = value
end

#catalog ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 38

def catalog; @known end

#catalog! ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 39

def catalog!; read!; catalog end

#clear ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 33

def clear; @known.clear end

#list ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 35

def list; @known.keys end

#list! ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 36

def list!; read!; list; end

#read! ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 61

def read!
  @known.clear
  fact_readers = self.methods.grep /^fact_read_/
  fact_readers.each do |getter| 
    getter =~ /^fact_read_(\w+)/
    fact = $1.to_sym
    self.send( getter, @ndev, @known ) unless @known[fact]
  end
end

#uses(*facts) ⇒ Object 



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# File 'lib/junos-ez/facts.rb', line 41

def uses( *facts )
  values = facts.collect do |f|
    self.send( "fact_read_#{f}", @ndev, @known ) unless @known[f]
    self[f]
  end      
  (values.count == 1) ? values[0] : values      
end