Account archive download (#6460)
* Fix #201: Account archive download * Export actor and private key in the archive * Optimize BackupService - Add conversation to cached associations of status, because somehow it was forgotten and is source of N+1 queries - Explicitly call GC between batches of records being fetched (Model class allocations are the worst offender) - Stream media files into the tar in 1MB chunks (Do not allocate media file (up to 8MB) as string into memory) - Use #bytesize instead of #size to calculate file size for JSON (Fix FileOverflow error) - Segment media into subfolders by status ID because apparently GIF-to-MP4 media are all named "media.mp4" for some reason * Keep uniquely generated filename in Paperclip::GifTranscoder * Ensure dumped files do not overwrite each other by maintaing directory partitions * Give tar archives a good name * Add scheduler to remove week-old backups * Fix code style issueth-downstream
Eugen Rochko
7 years ago
committed by
GitHub
parent
9ff2739fb5
commit
f6884555d7
@ -1,11 +1,23 @@
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# frozen_string_literal: true
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class Settings::ExportsController < ApplicationController
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include Authorization
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layout 'admin'
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before_action :authenticate_user!
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def show
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@export = Export.new(current_account)
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@backups = current_user.backups
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end
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def create
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authorize :backup, :create?
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backup = current_user.backups.create!
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BackupWorker.perform_async(backup.id)
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redirect_to settings_export_path
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end
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end
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After Width: | Height: | Size: 205 B |
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After Width: | Height: | Size: 271 B |
@ -0,0 +1,22 @@
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# frozen_string_literal: true
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# == Schema Information
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#
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# Table name: backups
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#
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# id :integer not null, primary key
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# user_id :integer
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# dump_file_name :string
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# dump_content_type :string
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# dump_file_size :integer
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# dump_updated_at :datetime
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# processed :boolean default(FALSE), not null
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# created_at :datetime not null
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# updated_at :datetime not null
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#
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class Backup < ApplicationRecord
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belongs_to :user, inverse_of: :backups
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has_attached_file :dump
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do_not_validate_attachment_file_type :dump
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end
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@ -0,0 +1,9 @@
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# frozen_string_literal: true
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class BackupPolicy < ApplicationPolicy
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MIN_AGE = 1.week
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def create?
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user_signed_in? && current_user.backups.where('created_at >= ?', MIN_AGE.ago).count.zero?
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end
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end
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@ -0,0 +1,128 @@
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# frozen_string_literal: true
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require 'rubygems/package'
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class BackupService < BaseService
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attr_reader :account, :backup, :collection
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def call(backup)
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@backup = backup
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@account = backup.user.account
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build_json!
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build_archive!
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end
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private
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def build_json!
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@collection = serialize(collection_presenter, ActivityPub::CollectionSerializer)
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account.statuses.with_includes.find_in_batches do |statuses|
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statuses.each do |status|
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item = serialize(status, ActivityPub::ActivitySerializer)
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item.delete(:'@context')
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unless item[:type] == 'Announce' || item[:object][:attachment].blank?
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item[:object][:attachment].each do |attachment|
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attachment[:url] = Addressable::URI.parse(attachment[:url]).path.gsub(/\A\/system\//, '')
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end
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end
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@collection[:orderedItems] << item
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end
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GC.start
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end
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end
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def build_archive!
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tmp_file = Tempfile.new(%w(archive .tar.gz))
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File.open(tmp_file, 'wb') do |file|
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Zlib::GzipWriter.wrap(file) do |gz|
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Gem::Package::TarWriter.new(gz) do |tar|
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dump_media_attachments!(tar)
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dump_outbox!(tar)
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dump_actor!(tar)
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end
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end
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end
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archive_filename = ['archive', Time.now.utc.strftime('%Y%m%d%H%M%S'), SecureRandom.hex(2)].join('-') + '.tar.gz'
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@backup.dump = ActionDispatch::Http::UploadedFile.new(tempfile: tmp_file, filename: archive_filename)
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@backup.processed = true
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@backup.save!
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ensure
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tmp_file.close
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tmp_file.unlink
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end
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def dump_media_attachments!(tar)
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MediaAttachment.attached.where(account: account).find_in_batches do |media_attachments|
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media_attachments.each do |m|
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download_to_tar(tar, m.file, m.file.path)
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end
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GC.start
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end
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end
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def dump_outbox!(tar)
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json = Oj.dump(collection)
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tar.add_file_simple('outbox.json', 0o444, json.bytesize) do |io|
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io.write(json)
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end
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end
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def dump_actor!(tar)
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actor = serialize(account, ActivityPub::ActorSerializer)
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actor[:icon][:url] = 'avatar' + File.extname(actor[:icon][:url]) if actor[:icon]
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actor[:image][:url] = 'header' + File.extname(actor[:image][:url]) if actor[:image]
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download_to_tar(tar, account.avatar, 'avatar' + File.extname(account.avatar.path)) if account.avatar.exists?
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download_to_tar(tar, account.header, 'header' + File.extname(account.header.path)) if account.header.exists?
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json = Oj.dump(actor)
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tar.add_file_simple('actor.json', 0o444, json.bytesize) do |io|
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io.write(json)
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end
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tar.add_file_simple('key.pem', 0o444, account.private_key.bytesize) do |io|
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io.write(account.private_key)
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end
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end
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def collection_presenter
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ActivityPub::CollectionPresenter.new(
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id: account_outbox_url(account),
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type: :ordered,
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size: account.statuses_count,
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items: []
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)
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end
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def serialize(object, serializer)
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ActiveModelSerializers::SerializableResource.new(
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object,
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serializer: serializer,
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adapter: ActivityPub::Adapter
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).as_json
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end
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CHUNK_SIZE = 1.megabyte
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def download_to_tar(tar, attachment, filename)
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adapter = Paperclip.io_adapters.for(attachment)
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tar.add_file_simple(filename, 0o444, adapter.size) do |io|
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while (buffer = adapter.read(CHUNK_SIZE))
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io.write(buffer)
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end
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end
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end
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end
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@ -0,0 +1,59 @@
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%table.email-table{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.email-body
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.email-container
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%table.content-section{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.content-cell.hero
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.email-row
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.col-6
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%table.column{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.column-cell.text-center.padded
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%table.hero-icon{ align: 'center', cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td
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= image_tag full_pack_url('icon_file_download.png'), alt: ''
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%h1= t 'user_mailer.backup_ready.title'
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%table.email-table{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.email-body
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.email-container
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%table.content-section{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.content-cell.content-start
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.email-row
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.col-6
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%table.column{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.column-cell.text-center
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%p= t 'user_mailer.backup_ready.explanation'
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%table.email-table{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.email-body
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.email-container
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%table.content-section{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.content-cell
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%table.column{ cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.column-cell.button-cell
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%table.button{ align: 'center', cellspacing: 0, cellpadding: 0 }
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%tbody
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%tr
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%td.button-primary
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= link_to full_asset_url(@backup.dump.url) do
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%span= t 'exports.archive_takeout.download'
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@ -0,0 +1,7 @@
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<%= t 'user_mailer.backup_ready.title' %>
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===
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<%= t 'user_mailer.backup_ready.explanation' %>
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=> <%= full_asset_url(@backup.dump.url) %>
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@ -0,0 +1,17 @@
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# frozen_string_literal: true
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class BackupWorker
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include Sidekiq::Worker
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sidekiq_options queue: 'pull'
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def perform(backup_id)
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backup = Backup.find(backup_id)
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user = backup.user
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BackupService.new.call(backup)
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user.backups.where.not(id: backup.id).destroy_all
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UserMailer.backup_ready(user, backup).deliver_later
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end
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end
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@ -0,0 +1,16 @@
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# frozen_string_literal: true
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require 'sidekiq-scheduler'
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class Scheduler::BackupCleanupScheduler
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include Sidekiq::Worker
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def perform
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old_backups.find_each(&:destroy!)
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end
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private
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def old_backups
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Backup.where('created_at < ?', 7.days.ago)
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end
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end
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@ -0,0 +1,11 @@
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class CreateBackups < ActiveRecord::Migration[5.1]
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def change
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create_table :backups do |t|
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t.references :user, foreign_key: { on_delete: :nullify }
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t.attachment :dump
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t.boolean :processed, null: false, default: false
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t.timestamps
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end
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end
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end
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@ -0,0 +1,3 @@
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Fabricator(:backup) do
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user
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end
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@ -0,0 +1,5 @@
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require 'rails_helper'
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RSpec.describe Backup, type: :model do
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end
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