115 lines
3.3 KiB
Ruby
115 lines
3.3 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class AttachmentBatch
|
|
# Maximum amount of objects you can delete in an S3 API call. It's
|
|
# important to remember that this does not correspond to the number
|
|
# of records in the batch, since records can have multiple attachments
|
|
LIMIT = 1_000
|
|
|
|
# Attributes generated and maintained by Paperclip (not all of them
|
|
# are always used on every class, however)
|
|
NULLABLE_ATTRIBUTES = %w(
|
|
file_name
|
|
content_type
|
|
file_size
|
|
fingerprint
|
|
created_at
|
|
updated_at
|
|
).freeze
|
|
|
|
# Styles that are always present even when not explicitly defined
|
|
BASE_STYLES = %i(original).freeze
|
|
|
|
attr_reader :klass, :records, :storage_mode
|
|
|
|
def initialize(klass, records)
|
|
@klass = klass
|
|
@records = records
|
|
@storage_mode = Paperclip::Attachment.default_options[:storage]
|
|
@attachment_names = klass.attachment_definitions.keys
|
|
end
|
|
|
|
def delete
|
|
remove_files
|
|
batch.delete_all
|
|
end
|
|
|
|
def clear
|
|
remove_files
|
|
batch.update_all(nullified_attributes) # rubocop:disable Rails/SkipsModelValidations
|
|
end
|
|
|
|
private
|
|
|
|
def batch
|
|
klass.where(id: records.map(&:id))
|
|
end
|
|
|
|
def remove_files
|
|
keys = []
|
|
|
|
logger.debug { "Preparing to delete attachments for #{records.size} records" }
|
|
|
|
records.each do |record|
|
|
@attachment_names.each do |attachment_name|
|
|
attachment = record.public_send(attachment_name)
|
|
styles = BASE_STYLES | attachment.styles.keys
|
|
|
|
next if attachment.blank?
|
|
|
|
styles.each do |style|
|
|
case @storage_mode
|
|
when :s3
|
|
logger.debug { "Adding #{attachment.path(style)} to batch for deletion" }
|
|
keys << attachment.style_name_as_path(style)
|
|
when :filesystem
|
|
logger.debug { "Deleting #{attachment.path(style)}" }
|
|
path = attachment.path(style)
|
|
FileUtils.remove_file(path, true)
|
|
|
|
begin
|
|
FileUtils.rmdir(File.dirname(path), parents: true)
|
|
rescue Errno::EEXIST, Errno::ENOTEMPTY, Errno::ENOENT, Errno::EINVAL, Errno::ENOTDIR, Errno::EACCES
|
|
# Ignore failure to delete a directory, with the same ignored errors
|
|
# as Paperclip
|
|
end
|
|
when :fog
|
|
logger.debug { "Deleting #{attachment.path(style)}" }
|
|
attachment.directory.files.new(key: attachment.path(style)).destroy
|
|
when :azure
|
|
logger.debug { "Deleting #{attachment.path(style)}" }
|
|
attachment.destroy
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
return unless storage_mode == :s3
|
|
|
|
# We can batch deletes over S3, but there is a limit of how many
|
|
# objects can be processed at once, so we have to potentially
|
|
# separate them into multiple calls.
|
|
|
|
keys.each_slice(LIMIT) do |keys_slice|
|
|
logger.debug { "Deleting #{keys_slice.size} objects" }
|
|
|
|
bucket.delete_objects(delete: {
|
|
objects: keys_slice.map { |key| { key: key } },
|
|
quiet: true,
|
|
})
|
|
end
|
|
end
|
|
|
|
def bucket
|
|
@bucket ||= records.first.public_send(@attachment_names.first).s3_bucket
|
|
end
|
|
|
|
def nullified_attributes
|
|
@attachment_names.flat_map { |attachment_name| NULLABLE_ATTRIBUTES.map { |attribute| "#{attachment_name}_#{attribute}" } & klass.column_names }.index_with(nil)
|
|
end
|
|
|
|
def logger
|
|
Rails.logger
|
|
end
|
|
end
|