63 lines
1.3 KiB
Ruby
63 lines
1.3 KiB
Ruby
class Upload < ActiveRecord::Base
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# Upper limit for foreground checksum processing
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CHECKSUM_THRESHOLD = 100.megabytes
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belongs_to :model, polymorphic: true
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validates :size, presence: true
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validates :path, presence: true
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validates :model, presence: true
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validates :uploader, presence: true
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before_save :calculate_checksum, if: :foreground_checksum?
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after_commit :schedule_checksum, unless: :foreground_checksum?
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def self.remove_path(path)
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where(path: path).destroy_all
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end
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def self.record(uploader)
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remove_path(uploader.relative_path)
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create(
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size: uploader.file.size,
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path: uploader.relative_path,
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model: uploader.model,
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uploader: uploader.class.to_s
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)
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end
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def absolute_path
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return path unless relative_path?
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uploader_class.absolute_path(self)
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end
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def calculate_checksum
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return unless exist?
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self.checksum = Digest::SHA256.file(absolute_path).hexdigest
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end
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def exist?
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File.exist?(absolute_path)
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end
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private
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def foreground_checksum?
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size <= CHECKSUM_THRESHOLD
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end
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def schedule_checksum
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UploadChecksumWorker.perform_async(id)
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end
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def relative_path?
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!path.start_with?('/')
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end
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def uploader_class
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Object.const_get(uploader)
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end
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end
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