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# frozen_string_literal: true
module Gitlab
module ImportExport
class LfsRestorer
include Gitlab::Utils::StrongMemoize
attr_accessor :project, :shared
def initialize(project:, shared:)
@project = project
@shared = shared
end
def restore
return true if lfs_file_paths.empty?
lfs_file_paths.each do |file_path|
link_or_create_lfs_object!(file_path)
end
true
rescue => e
shared.error(e)
false
end
private
def link_or_create_lfs_object!(path)
size = File.size(path)
oid = LfsObject.calculate_oid(path)
lfs_object = LfsObject.find_or_initialize_by(oid: oid, size: size)
lfs_object.file = File.open(path) unless lfs_object.file&.exists?
lfs_object.save! if lfs_object.changed?
repository_types(oid).each do |repository_type|
LfsObjectsProject.create!(
project: project,
lfs_object: lfs_object,
repository_type: repository_type
)
end
end
def repository_types(oid)
# We allow support for imports created before the `lfs-objects.json`
# file was generated. In this case, the restorer will link an LFS object
# with a single `lfs_objects_projects` relation.
#
# This allows us backwards-compatibility without version bumping.
# See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/30830#note_192608870
return ['project'] unless has_lfs_json?
lfs_json[oid]
end
def lfs_file_paths
@lfs_file_paths ||= Dir.glob("#{lfs_storage_path}/*")
end
def has_lfs_json?
strong_memoize(:has_lfs_json) do
File.exist?(lfs_json_path)
end
end
def lfs_json
return {} unless has_lfs_json?
@lfs_json ||=
begin
json = IO.read(lfs_json_path)
ActiveSupport::JSON.decode(json)
rescue
raise Gitlab::ImportExport::Error.new('Incorrect JSON format')
end
end
def lfs_storage_path
File.join(shared.export_path, ImportExport.lfs_objects_storage)
end
def lfs_json_path
File.join(shared.export_path, ImportExport.lfs_objects_filename)
end
end
end
end
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