Class: Configuration::Identify

Inherits:
HandlerStatement show all
Extended by:
Stats
Includes:
ClassLogging, ConditionalInclusion, GlobalConfiguration, ImageName, LocalConfiguration, PerfStats
Defined in:
lib/httpimagestore/configuration/identify.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Scope

node_parsers, #parse, register_node_parser

Constructor Details

#initialize(global, image_name) ⇒ Identify

Returns a new instance of Identify.



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

def initialize(global, image_name)
  with_global_configuration(global)
  with_image_name(image_name)
end

Class Method Details

.match(node) ⇒ Object 



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# File 'lib/httpimagestore/configuration/identify.rb', line 20

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

.parse(configuration, node) ⇒ Object 



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# File 'lib/httpimagestore/configuration/identify.rb', line 24

def self.parse(configuration, node)
  image_name = node.grab_values('image name').first

  conditions, remaining = *ConditionalInclusion.grab_conditions_with_remaining(node.attributes)
  remaining.empty? or raise UnexpectedAttributesError.new(node, remaining)

  iden = self.new(configuration.global, image_name)
  iden.with_conditions(conditions)

  configuration.processors << iden
end

Instance Method Details

#realize(request_state) ⇒ Object 



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# File 'lib/httpimagestore/configuration/identify.rb', line 41

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 = measure "identifying", @image_name do
    client.with_headers(request_state.forward_headers).identify(image.data)
  end

  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