Method: Ufo::Docker::Cleaner#delete_list

Defined in:
lib/ufo/docker/cleaner.rb

#delete_list ⇒ Object 



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# File 'lib/ufo/docker/cleaner.rb', line 24

def delete_list
  return @delete_list if @delete_list

  out = execute("docker images", live: true) # live to override the noop cli options
  name_regexp = Regexp.new(@docker_image_name)
  # Example tag: ufo-2016-10-19T00-36-47-211b63a
  tag_string = "#{@tag_prefix}-\\d{4}-\\d{2}-\\d{2}T\\d{2}-\\d{2}-\\d{2}-.{7}"
  tag_regexp = Regexp.new(tag_string)
  filtered_out = out.split("\n").select do |line|
    name,tag = line.split(' ')
    name =~ name_regexp && tag =~ tag_regexp
  end

  tags = filtered_out.map { |l| l.split(' ')[1] } # 2nd column is tag
  tags = tags.sort.reverse  # ordered by most recent images first
  delete_tags = tags[@keep..-1]
  if delete_tags.nil?
    @delete_list = []
  else
    @delete_list = delete_tags.map { |t| "#{@docker_image_name}:#{t}" }.join(' ')
  end
end