Class: OctofactsUpdater::Fact

Inherits:
Object
  • Object
show all
Defined in:
lib/octofacts_updater/fact.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, value) ⇒ Fact

Constructor.

name - The String naming the fact. value - The arbitrary object with the value of the fact.



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# File 'lib/octofacts_updater/fact.rb', line 16

def initialize(name, value)
  @name = name
  @value = value
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/octofacts_updater/fact.rb', line 10

def name
  @name
end

Instance Method Details

#set_value(new_value, name_in = nil) ⇒ Object

Set the value of the fact. If the name is specified, this will dig into a structured fact to set the value within the structure.

new_value - An object with the new value for the fact

name_in - An optional String to dig into the structure (formatted with

indicating hash delimiters)



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# File 'lib/octofacts_updater/fact.rb', line 59

def set_value(new_value, name_in = nil)
  if name_in.nil?
    if new_value.is_a?(Proc)
      return @value = new_value.call(@value)
    end

    return @value = new_value
  end

  parts = if name_in.is_a?(String)
            name_in.split("::")
          elsif name_in.is_a?(Array)
            name_in.map do |item|
              if item.is_a?(String)
                item
              elsif item.is_a?(Hash) && item.key?("regexp")
                Regexp.new(item["regexp"])
              else
                raise ArgumentError, "Unable to interpret structure item: #{item.inspect}"
              end
            end
          else
            raise ArgumentError, "Unable to interpret structure: #{name_in.inspect}"
          end

  set_structured_value(@value, parts, new_value)
end

#value(name_in = nil) ⇒ Object

Get the value of the fact. If the name is specified, this will dig into a structured fact to pull out the value within the structure.

name_in - An optional String to dig into the structure (formatted with

indicating hash delimiters)

Returns the value of the fact.



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# File 'lib/octofacts_updater/fact.rb', line 27

def value(name_in = nil)
  # Just a normal lookup -- return the value
  return @value if name_in.nil?

  # Structured lookup returns nil unless the fact is actually structured.
  return unless @value.is_a?(Hash)

  # Dig into the hash to pull out the desired value.
  pointer = @value
  parts = name_in.split("::")
  last_part = parts.pop

  parts.each do |part|
    return unless pointer[part].is_a?(Hash)
    pointer = pointer[part]
  end

  pointer[last_part]
end

#value=(new_value) ⇒ Object

Set the value of the fact.

new_value - An object with the new value for the fact



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# File 'lib/octofacts_updater/fact.rb', line 50

def value=(new_value)
  set_value(new_value)
end