Method: Arrow::Dispatcher.instance

Defined in:
lib/arrow/dispatcher.rb

.instance(key = :__default__) ⇒ Object

Get the instance of the Dispatcher set up under the given key, which can either be a Symbol or a String containing the path to a configfile. If no key is given, it defaults to :__default__, which is the key assigned when .create is given just a configfile argument.



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# File 'lib/arrow/dispatcher.rb', line 89

def self::instance( key=:__default__ )
	rval = nil

	# Fetch the instance which corresponds to the given key
	if key.is_a?( Symbol )
		Arrow::Logger.debug "Returning instance for key %p (one of %p): %p" %
			[key, @@Instance.keys, @@Instance[key]]
		rval = @@Instance[ key ]
	else
		Arrow::Logger.debug "Returning instance for configfile %p" % [key]
		configfile = File.expand_path( key )
		self.create( configfile )
		rval = @@Instance[ configfile ]
	end

	# Return either a configured Dispatcher instance or a FallbackHandler if
	# no Dispatcher corresponds to the given key.
	return rval || Arrow::FallbackHandler.new( key, @@Instance )
end