239fdc78b1
It gathers list of file paths to delete before destroying the parent object. Then after the parent_object is destroyed these paths are scheduled for deletion asynchronously. Carrierwave needed associated model for deleting upload file. To avoid this requirement, simple Fog/File layer is used directly for file deletion, this allows us to use just a simple list of paths.
127 lines
3 KiB
Ruby
127 lines
3 KiB
Ruby
# frozen_string_literal: true
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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 # rubocop:disable Cop/PolymorphicAssociations
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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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scope :with_files_stored_locally, -> { where(store: ObjectStorage::Store::LOCAL) }
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scope :with_files_stored_remotely, -> { where(store: ObjectStorage::Store::REMOTE) }
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before_save :calculate_checksum!, if: :foreground_checksummable?
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after_commit :schedule_checksum, if: :checksummable?
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# as the FileUploader is not mounted, the default CarrierWave ActiveRecord
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# hooks are not executed and the file will not be deleted
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after_destroy :delete_file!, if: -> { uploader_class <= FileUploader }
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def self.hexdigest(path)
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Digest::SHA256.file(path).hexdigest
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end
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class << self
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##
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# FastDestroyAll concerns
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def begin_fast_destroy
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{
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Uploads::Local => Uploads::Local.new.keys(with_files_stored_locally),
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Uploads::Fog => Uploads::Fog.new.keys(with_files_stored_remotely)
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}
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end
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##
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# FastDestroyAll concerns
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def finalize_fast_destroy(keys)
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keys.each do |store_class, paths|
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store_class.new.delete_keys_async(paths)
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end
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end
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end
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def absolute_path
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raise ObjectStorage::RemoteStoreError, "Remote object has no absolute path." unless local?
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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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self.checksum = nil
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return unless checksummable?
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self.checksum = Digest::SHA256.file(absolute_path).hexdigest
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end
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def build_uploader(mounted_as = nil)
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uploader_class.new(model, mounted_as || mount_point).tap do |uploader|
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uploader.upload = self
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uploader.retrieve_from_store!(identifier)
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end
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end
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def exist?
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exist = File.exist?(absolute_path)
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# Help sysadmins find missing upload files
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if persisted? && !exist
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if Gitlab::Sentry.enabled?
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Raven.capture_message("Upload file does not exist", extra: self.attributes)
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end
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Gitlab::Metrics.counter(:upload_file_does_not_exist_total, 'The number of times an upload record could not find its file').increment
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end
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exist
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end
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def uploader_context
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{
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identifier: identifier,
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secret: secret
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}.compact
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end
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def local?
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store == ObjectStorage::Store::LOCAL
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end
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private
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def delete_file!
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build_uploader.remove!
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end
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def checksummable?
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checksum.nil? && local? && exist?
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end
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def foreground_checksummable?
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checksummable? && 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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def identifier
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File.basename(path)
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end
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def mount_point
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super&.to_sym
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end
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end
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