Class: RosettAi::Backup::TarGzCompressor

Inherits:
Compressor
  • Object
show all
Defined in:
lib/rosett_ai/backup/compressor.rb

Overview

tar.gz compression using Ruby stdlib

Constant Summary

Constants inherited from Compressor

Compressor::ALGORITHMS

Instance Method Summary collapse

Methods inherited from Compressor

for

Instance Method Details

#available? ⇒ Boolean

Returns always true (uses Ruby stdlib).

Returns:

  • (Boolean) —

    always true (uses Ruby stdlib)



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# File 'lib/rosett_ai/backup/compressor.rb', line 98

def available?
  true
end

#compress(files, _base_dirs, output_path, level: nil) ⇒ String

Returns the output path.

Parameters:

  • files (Array<Hash>) —

    entries with :full_path and :archive_path keys

  • _base_dirs (Array<String>) —

    unused

  • output_path (String) —

    destination path for the archive

  • level (Integer, nil) (defaults to: nil) —

    Zlib compression level (nil for default)

Returns:

  • (String) —

    the output path



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# File 'lib/rosett_ai/backup/compressor.rb', line 112

def compress(files, _base_dirs, output_path, level: nil)
  gz_level = level || Zlib::DEFAULT_COMPRESSION

  File.open(output_path, 'wb', 0o644) do |file|
    Zlib::GzipWriter.wrap(file, gz_level) do |gz|
      Gem::Package::TarWriter.new(gz) do |tar|
        files.each do |entry|
          content = File.read(entry[:full_path])
          tar.add_file_simple(entry[:archive_path], 0o644, content.bytesize) do |io|
            io.write(content)
          end
        end
      end
    end
  end

  output_path
end

#extension ⇒ String

Returns ".tar.gz".

Returns:

  • (String) —

    ".tar.gz"



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# File 'lib/rosett_ai/backup/compressor.rb', line 103

def extension
  '.tar.gz'
end