hometown/app/models/concerns/account_header.rb
Akihiko Odaki 40e5d2303b Validate HTTP response length while receiving (#6891)
to_s method of HTTP::Response keeps blocking while it receives the whole
content, no matter how it is big. This means it may waste time to receive
unacceptably large files. It may also consume memory and disk in the
process. This solves the inefficency by checking response length while
receiving.
2018-03-26 14:02:10 +02:00

35 lines
1.0 KiB
Ruby

# frozen_string_literal: true
module AccountHeader
extend ActiveSupport::Concern
IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif'].freeze
LIMIT = 2.megabytes
class_methods do
def header_styles(file)
styles = { original: { geometry: '700x335#', file_geometry_parser: FastGeometryParser } }
styles[:static] = { geometry: '700x335#', format: 'png', convert_options: '-coalesce', file_geometry_parser: FastGeometryParser } if file.content_type == 'image/gif'
styles
end
private :header_styles
end
included do
# Header upload
has_attached_file :header, styles: ->(f) { header_styles(f) }, convert_options: { all: '-strip' }, processors: [:lazy_thumbnail]
validates_attachment_content_type :header, content_type: IMAGE_MIME_TYPES
validates_attachment_size :header, less_than: LIMIT
remotable_attachment :header, LIMIT
end
def header_original_url
header.url(:original)
end
def header_static_url
header_content_type == 'image/gif' ? header.url(:static) : header_original_url
end
end