hbase-shell/src/main/ruby/shell/commands/list_labels.rb

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module Shell
  module Commands
    class ListLabels < Command
      def help
        return <<-EOF
List the visibility labels defined in the system.
Optional regular expression parameter could be used to filter the labels being returned.
Syntax : list_labels

For example:

    hbase> list_labels 'secret.*'
    hbase> list_labels
EOF
      end

      def command(regex = ".*")
        format_simple_command do
          list = visibility_labels_admin.list_labels(regex)
          list.each do |label|
            formatter.row([org.apache.hadoop.hbase.util.Bytes::toStringBinary(label.toByteArray)])
          end
        end
      end
    end
  end
end