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# frozen_string_literal: true
module BulkImports
class TreeExportService
def initialize(portable, export_path, relation)
@portable = portable
@export_path = export_path
@relation = relation
@config = FileTransfer.config_for(portable)
end
def execute
return serializer.serialize_root(config.class::SELF_RELATION) if self_relation?
relation_definition = config.tree_relation_definition_for(relation)
raise BulkImports::Error, 'Unsupported relation export type' unless relation_definition
serializer.serialize_relation(relation_definition)
end
def exported_filename
return "#{relation}.json" if self_relation?
"#{relation}.ndjson"
end
private
attr_reader :export_path, :portable, :relation, :config
# rubocop: disable CodeReuse/Serializer
def serializer
::Gitlab::ImportExport::Json::StreamingSerializer.new(
portable,
config.portable_tree,
json_writer,
exportable_path: ''
)
end
# rubocop: enable CodeReuse/Serializer
def json_writer
::Gitlab::ImportExport::Json::NdjsonWriter.new(export_path)
end
def self_relation?
relation == config.class::SELF_RELATION
end
end
end
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