Class: Plugin::Thumbnailer::Service
- Inherits:
-
Object
- Object
- Plugin::Thumbnailer::Service
- Extended by:
- Stats
- Includes:
- ClassLogging
- Defined in:
- lib/httpthumbnailer/plugin/thumbnailer.rb
Class Method Summary collapse
Instance Method Summary collapse
-
#initialize(options = {}) ⇒ Service
constructor
A new instance of Service.
- #load(io, options = {}) ⇒ Object
- #processing_method(method, &impl) ⇒ Object
- #set_limit(limit, value) ⇒ Object
Constructor Details
#initialize(options = {}) ⇒ Service
Returns a new instance of Service.
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# File 'lib/httpthumbnailer/plugin/thumbnailer.rb', line 232 def initialize( = {}) @processing_methods = {} @options = @images_loaded = 0 log.info "initializing thumbnailer: #{self.class.rmagick_version} #{self.class.magick_version}" set_limit(:area, [:limit_area]) if .member?(:limit_area) set_limit(:memory, [:limit_memory]) if .member?(:limit_memory) set_limit(:map, [:limit_map]) if .member?(:limit_map) set_limit(:disk, [:limit_disk]) if .member?(:limit_disk) Magick.trace_proc = lambda do |which, description, id, method| case which when :c Service.stats.incr_images_loaded @images_loaded += 1 Service.stats.max_images_loaded = Service.stats.images_loaded if Service.stats.images_loaded > Service.stats.max_images_loaded Service.stats.max_images_loaded_worker = @images_loaded if @images_loaded > Service.stats.max_images_loaded_worker Service.stats.incr_total_images_created case method when :from_blob Service.stats.incr_total_images_created_from_blob when :initialize Service.stats.incr_total_images_created_initialize when :resize Service.stats.incr_total_images_created_resize when :resize! Service.stats.incr_total_images_created_resize when :crop Service.stats.incr_total_images_created_crop when :crop! Service.stats.incr_total_images_created_crop when :sample Service.stats.incr_total_images_created_sample else log.warn "uncounted image creation method: #{method}" end when :d Service.stats.decr_images_loaded @images_loaded -= 1 Service.stats.incr_total_images_destroyed end log.debug{"image event: #{which}, #{description}, #{id}, #{method}: loaded images: #{Service.stats.images_loaded}"} end end |
Class Method Details
.input_formats ⇒ Object
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# File 'lib/httpthumbnailer/plugin/thumbnailer.rb', line 212 def self.input_formats Magick.formats.select do |name, mode| mode.include? 'r' end.keys.map(&:downcase) end |
.magick_version ⇒ Object
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# File 'lib/httpthumbnailer/plugin/thumbnailer.rb', line 228 def self.magick_version Magick::Magick_version end |
.output_formats ⇒ Object
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# File 'lib/httpthumbnailer/plugin/thumbnailer.rb', line 218 def self.output_formats Magick.formats.select do |name, mode| mode.include? 'w' end.keys.map(&:downcase) end |
.rmagick_version ⇒ Object
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# File 'lib/httpthumbnailer/plugin/thumbnailer.rb', line 224 def self.rmagick_version Magick::Version end |
Instance Method Details
#load(io, options = {}) ⇒ Object
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# File 'lib/httpthumbnailer/plugin/thumbnailer.rb', line 279 def load(io, = {}) mw = [:max_width] mh = [:max_height] if mw and mh mw = mw.to_i mh = mh.to_i log.info "using max size hint of: #{mw}x#{mh}" end begin blob = io.read old_memory_limit = nil borrowed_memory_limit = nil if .member?(:limit_memory) borrowed_memory_limit = [:limit_memory].borrow([:limit_memory].limit, 'image magick') old_memory_limit = set_limit(:memory, borrowed_memory_limit) end images = Magick::Image.from_blob(blob) do |info| if mw and mh define('jpeg', 'size', "#{mw*2}x#{mh*2}") define('jbig', 'size', "#{mw*2}x#{mh*2}") end end image = images.first if image.columns > image.base_columns or image.rows > image.base_rows and not [:no_reload] log.warn "input image got upscaled from: #{image.base_columns}x#{image.base_rows} to #{image.columns}x#{image.rows}: reloading without max size hint!" images.each do |other| other.destroy! end images = Magick::Image.from_blob(blob) Service.stats.incr_total_images_reloaded end blob = nil images.shift.replace do |image| images.each do |other| other.destroy! end log.info "loaded image: #{image.inspect}" Service.stats.incr_total_images_loaded # clean up the image image.strip! image.properties do |key, value| log.debug "deleting user propertie '#{key}'" image[key] = nil end image end.replace do |image| if mw and mh and not [:no_downscale] f = image.find_downscale_factor(mw, mh) if f > 1 image = image.downscale(f) log.info "downscaled image by factor of #{f}: #{image.inspect}" Service.stats.incr_total_images_downscaled end end InputImage.new(image, @processing_methods) end rescue Magick::ImageMagickError => error raise ImageTooLargeError, error if error. =~ /cache resources exhausted/ raise UnsupportedMediaTypeError, error ensure if old_memory_limit set_limit(:memory, old_memory_limit) [:limit_memory].return(borrowed_memory_limit, 'image magick') end end end |
#processing_method(method, &impl) ⇒ Object
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# File 'lib/httpthumbnailer/plugin/thumbnailer.rb', line 353 def processing_method(method, &impl) @processing_methods[method] = impl end |
#set_limit(limit, value) ⇒ Object
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# File 'lib/httpthumbnailer/plugin/thumbnailer.rb', line 357 def set_limit(limit, value) old = Magick.limit_resource(limit, value) log.info "changed #{limit} limit from #{old} to #{value} bytes" old end |