Class: Configuration::OutputImage

Inherits:
HandlerStatement show all
Includes:
ClassLogging, ImageName, LocalConfiguration, PerfStats
Defined in:
lib/httpimagestore/configuration/output.rb

Direct Known Subclasses

OutputDataURIImage

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Scope

node_parsers, #parse, register_node_parser

Constructor Details

#initialize(name, cache_control) ⇒ OutputImage

Returns a new instance of OutputImage.



107
108
109
110
111
 
# File 'lib/httpimagestore/configuration/output.rb', line 107

def initialize(name, cache_control)
	@name = name
	@cache_control = cache_control
	with_image_name(name)
end

Class Method Details

.match(node) ⇒ Object 



96
97
98
 
# File 'lib/httpimagestore/configuration/output.rb', line 96

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

.parse(configuration, node) ⇒ Object 



100
101
102
103
104
105
 
# File 'lib/httpimagestore/configuration/output.rb', line 100

def self.parse(configuration, node)
	configuration.output and raise StatementCollisionError.new(node, 'output')
	image_name = node.grab_values('image name').first
	cache_control = node.grab_attributes('cache-control').first
	configuration.output = self.new(image_name, cache_control)
end

Instance Method Details

#realize(request_state) ⇒ Object 



113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
 
# File 'lib/httpimagestore/configuration/output.rb', line 113

def realize(request_state)
	image = request_state.images[@name]
	mime_type =
		if image.mime_type
			image.mime_type
		else
			log.warn "image '#{@name}' has no mime type; sending 'application/octet-stream' content type"
			'application/octet-stream'
		end

	cache_control = @cache_control
	_context = self
	request_state.output do
		_context.measure "sending response image data", "mime type: #{mime_type} (image #{image.data.bytesize} bytes)" do
			res['Cache-Control'] = cache_control if cache_control
			write 200, mime_type, image.data
		end
	end
end