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1fd8f6df5f
When building the `scss_load_paths`, we were creating a full export of the theme (including uploads), and not cleaning it up. With many uploads, this can be extremely slow (because it downloads every upload from S3), and the lack of cleanup could cause a disk to fill up over time. This commit updates the ZipExporter to provide a `with_export_dir` API, which takes care of cleanup. It also adds a kwarg which allows exporting only extra_scss fields. This should make things much faster for themes with many uploads.
80 lines
2.2 KiB
Ruby
80 lines
2.2 KiB
Ruby
# frozen_string_literal: true
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require_dependency 'compression/zip'
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module ThemeStore; end
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class ThemeStore::ZipExporter
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def initialize(theme)
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@theme = theme
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@temp_folder = "#{Pathname.new(Dir.tmpdir).realpath}/discourse_theme_#{SecureRandom.hex}"
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@export_name = @theme.name.downcase.gsub(/[^0-9a-z.\-]/, '-')
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@export_name = "discourse-#{@export_name}" unless @export_name.starts_with?("discourse")
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end
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def export_name
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@export_name
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end
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def package_filename
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export_package
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end
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def cleanup!
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FileUtils.rm_rf(@temp_folder)
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end
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def with_export_dir(**kwargs)
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export_to_folder(**kwargs)
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yield File.join(@temp_folder, @export_name)
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ensure
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cleanup!
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end
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private
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def export_to_folder(extra_scss_only: false)
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destination_folder = File.join(@temp_folder, @export_name)
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FileUtils.mkdir_p(destination_folder)
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@theme.theme_fields.each do |field|
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next if extra_scss_only && !field.extra_scss_field?
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next unless path = field.file_path
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# Belt and braces approach here. All the user input should already be
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# sanitized, but check for attempts to leave the temp directory anyway
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pathname = Pathname.new(File.join(destination_folder, path))
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folder_path = pathname.parent.cleanpath
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raise RuntimeError.new("Theme exporter tried to leave directory") unless folder_path.to_s.starts_with?(destination_folder)
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pathname.parent.mkpath
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path = pathname.realdirpath
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raise RuntimeError.new("Theme exporter tried to leave directory") unless path.to_s.starts_with?(destination_folder)
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if ThemeField.types[field.type_id] == :theme_upload_var
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filename = Discourse.store.path_for(field.upload)
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content = filename ? File.read(filename) : Discourse.store.download(field.upload).read
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else
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content = field.value
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end
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File.write(path, content)
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end
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if !extra_scss_only
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File.write(
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File.join(destination_folder, "about.json"),
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JSON.pretty_generate(@theme.generate_metadata_hash)
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)
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end
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@temp_folder
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end
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def export_package
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export_to_folder
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Compression::Zip.new.compress(@temp_folder, @export_name)
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end
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end
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