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attachment_upload_status.rb
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# frozen_string_literal: true # Copyright (C) 2019 - present Instructure, Inc. # # This file is part of Canvas. # # Canvas is free software: you can redistribute it and/or modify it under # the terms of the GNU Affero General Public License as published by the Free # Software Foundation, version 3 of the License. # # Canvas is distributed in the hope that it will be useful, but WITHOUT ANY # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR # A PARTICULAR PURPOSE. See the GNU Affero General Public License for more # details. # # You should have received a copy of the GNU Affero General Public License along # with this program. If not, see <http://www.gnu.org/licenses/>. # class AttachmentUploadStatus < ApplicationRecord belongs_to :attachment validates :attachment, :error, presence: true def self.cache_key(attachment) "attachment_upload:#{attachment.global_id}:status" end def self.pending!(attachment) Rails.cache.write(cache_key(attachment), "pending", expires_in: 1.day) end def self.success!(attachment) Rails.cache.delete(cache_key(attachment)) end def self.failed!(attachment, error) attachment.shard.activate do create!( attachment:, error: ).tap { Rails.cache.delete(cache_key(attachment)) } end end # If Rails.cache has a status, use that. Otherwise check for AttachmentUploadStatus in db. # If everything is empty, means the upload was a success. def self.upload_status(attachment) if attachment.created_at > 1.day.ago # seems like we can skip the cache check if it's old enough status = Rails.cache.read(cache_key(attachment)) return status if status end failed = if attachment.attachment_upload_statuses.loaded? attachment.attachment_upload_statuses.any? else attachment.attachment_upload_statuses.exists? end return "failed" if failed "success" end end