Class: Configuration::Identify

Inherits:
Object
  • Object
show all
Extended by:
Stats
Includes:
ClassLogging, ConditionalInclusion
Defined in:
lib/httpimagestore/configuration/identify.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ConditionalInclusion

#excluded?, #included?, #inclusion_matcher

Constructor Details

#initialize(global, image_name, matcher = nil) ⇒ Identify

Returns a new instance of Identify.



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# File 'lib/httpimagestore/configuration/identify.rb', line 30

def initialize(global, image_name, matcher = nil)
	@global = global
	@image_name = image_name
	inclusion_matcher matcher if matcher
end

Class Method Details

.match(node) ⇒ Object 



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# File 'lib/httpimagestore/configuration/identify.rb', line 17

def self.match(node)
	node.name == 'identify'
end

.parse(configuration, node) ⇒ Object 



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# File 'lib/httpimagestore/configuration/identify.rb', line 21

def self.parse(configuration, node)
	image_name = node.grab_values('image name').first
	if_image_name_on = node.grab_attributes('if-image-name-on').first

	matcher = InclusionMatcher.new(image_name, if_image_name_on) if if_image_name_on

	configuration.processors << self.new(configuration.global, image_name, matcher)
end

Instance Method Details

#realize(request_state) ⇒ Object 



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# File 'lib/httpimagestore/configuration/identify.rb', line 36

def realize(request_state)
	client = @global.thumbnailer or fail 'thumbnailer configuration'
	image = request_state.images[@image_name]

	log.info "identifying '#{@image_name}'"

	Identify.stats.incr_total_identify_requests
	Identify.stats.incr_total_identify_requests_bytes image.data.bytesize

	id = client.identify(image.data)

	image.mime_type = id.mime_type if id.mime_type
	image.width = id.width if id.width
	image.height = id.height if id.height
	log.info "image '#{@image_name}' identified as '#{id.mime_type}' #{image.width}x#{image.height}"
end