Method: Puppet::FileBucket::Dipper#diff

Defined in:
lib/puppet/file_bucket/dipper.rb

#diff(checksum_a, checksum_b, file_a, file_b) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Diffs two filebucket files identified by their sums

Raises:

  • (RuntimeError) 


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# File 'lib/puppet/file_bucket/dipper.rb', line 61

def diff(checksum_a, checksum_b, file_a, file_b)
  raise RuntimeError, _("Diff is not supported on this platform") if Puppet[:diff] == ""
  if checksum_a
    source_path = "#{@rest_path}#{@checksum_type}/#{checksum_a}"
    if checksum_b
      file_diff = Puppet::FileBucket::File.indirection.find(
        source_path,
        :bucket_path => @local_path,
        :diff_with => checksum_b)
    elsif file_b
      tmp_file = ::Tempfile.new('diff')
      begin
        restore(tmp_file.path, checksum_a)
        file_diff = Puppet::Util::Diff.diff(tmp_file.path, file_b)
      ensure
        tmp_file.close
        tmp_file.unlink
      end
    else
      raise Puppet::Error, _("Please provide a file or checksum to diff with")
    end
  elsif file_a
    if checksum_b
      tmp_file = ::Tempfile.new('diff')
      begin
        restore(tmp_file.path, checksum_b)
        file_diff = Puppet::Util::Diff.diff(file_a, tmp_file.path)
      ensure
        tmp_file.close
        tmp_file.unlink
      end
    elsif file_b
      file_diff = Puppet::Util::Diff.diff(file_a, file_b)
    end
  end
  raise Puppet::Error, _("Failed to diff files") unless file_diff
  file_diff.to_s
end