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# frozen_string_literal: true
module Paperclip
module AttachmentExtensions
# We overwrite this method to support delayed processing in
# Sidekiq. Since we process the original file to reduce disk
# usage, and we still want to generate thumbnails straight
# away, it's the only style we need to exclude
def process_style?(style_name, style_args)
if style_name == :original && instance.respond_to?(:delay_processing_for_attachment?) && instance.delay_processing_for_attachment?(name)
false
else
style_args.empty? || style_args.include?(style_name)
end
end
def storage_schema_version
instance_read(:storage_schema_version) || 0
end
def assign_attributes
super
instance_write(:storage_schema_version, 1)
end
def variant?(other_filename)
return true if original_filename == other_filename
return false if original_filename.nil?
formats = styles.values.map(&:format).compact
return false if formats.empty?
other_extension = File.extname(other_filename)
formats.include?(other_extension.delete('.')) && File.basename(other_filename, other_extension) == File.basename(original_filename, File.extname(original_filename))
end
def default_url(style_name = default_style)
@url_generator.for_as_default(style_name)
end
STOPLIGHT_THRESHOLD = 10
STOPLIGHT_COOLDOWN = 30
# We overwrite this method to put a circuit breaker around
# calls to object storage, to stop hitting APIs that are slow
# to respond or don't respond at all and as such minimize the
# impact of object storage outages on application throughput
def save
Stoplight('object-storage') { super }.with_threshold(STOPLIGHT_THRESHOLD).with_cool_off_time(STOPLIGHT_COOLDOWN).with_error_handler do |error, handle|
if error.is_a?(Seahorse::Client::NetworkingError)
handle.call(error)
else
raise error
end
end.run
end
end
end
Paperclip::Attachment.prepend(Paperclip::AttachmentExtensions)
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