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99 lines
3.6 KiB
Ruby
99 lines
3.6 KiB
Ruby
# frozen_string_literal: true
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module Paperclip
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module AttachmentExtensions
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def meta
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instance_read(:meta)
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end
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# monkey-patch to avoid unlinking too avoid unlinking source file too early
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# see https://github.com/kreeti/kt-paperclip/issues/64
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def post_process_style(name, style) #:nodoc:
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raise "Style #{name} has no processors defined." if style.processors.blank?
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intermediate_files = []
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original = @queued_for_write[:original]
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# if we're processing the original, close + unlink the source tempfile
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intermediate_files << original if name == :original
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@queued_for_write[name] = style.processors.
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inject(original) do |file, processor|
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file = Paperclip.processor(processor).make(file, style.processor_options, self)
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intermediate_files << file unless file == original
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file
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end
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unadapted_file = @queued_for_write[name]
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@queued_for_write[name] = Paperclip.io_adapters.
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for(@queued_for_write[name], @options[:adapter_options])
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unadapted_file.close if unadapted_file.respond_to?(:close)
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@queued_for_write[name]
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rescue Paperclip::Errors::NotIdentifiedByImageMagickError => e
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log("An error was received while processing: #{e.inspect}")
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(@errors[:processing] ||= []) << e.message if @options[:whiny]
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ensure
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unlink_files(intermediate_files)
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end
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# We overwrite this method to support delayed processing in
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# Sidekiq. Since we process the original file to reduce disk
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# usage, and we still want to generate thumbnails straight
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# away, it's the only style we need to exclude
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def process_style?(style_name, style_args)
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if style_name == :original && instance.respond_to?(:delay_processing_for_attachment?) && instance.delay_processing_for_attachment?(name)
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false
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else
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style_args.empty? || style_args.include?(style_name)
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end
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end
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def storage_schema_version
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instance_read(:storage_schema_version) || 0
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end
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def assign_attributes
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super
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instance_write(:storage_schema_version, 1)
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end
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def variant?(other_filename)
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return true if original_filename == other_filename
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return false if original_filename.nil?
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formats = styles.values.filter_map(&:format)
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return false if formats.empty?
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other_extension = File.extname(other_filename)
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formats.include?(other_extension.delete('.')) && File.basename(other_filename, other_extension) == File.basename(original_filename, File.extname(original_filename))
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end
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def default_url(style_name = default_style)
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@url_generator.for_as_default(style_name)
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end
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STOPLIGHT_THRESHOLD = 10
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STOPLIGHT_COOLDOWN = 30
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# We overwrite this method to put a circuit breaker around
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# calls to object storage, to stop hitting APIs that are slow
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# to respond or don't respond at all and as such minimize the
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# impact of object storage outages on application throughput
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def save
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# Don't go through Stoplight if we don't have anything object-storage-oriented to do
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return super if @queued_for_delete.empty? && @queued_for_write.empty? && !dirty?
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Stoplight('object-storage') { super }.with_threshold(STOPLIGHT_THRESHOLD).with_cool_off_time(STOPLIGHT_COOLDOWN).with_error_handler do |error, handle|
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if error.is_a?(Seahorse::Client::NetworkingError)
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handle.call(error)
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else
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raise error
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end
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end.run
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end
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end
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end
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Paperclip::Attachment.prepend(Paperclip::AttachmentExtensions)
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