content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.cassandra.tools.nodetool;
  
  import org.apache.cassandra.tools.NodeProbe;
  import org.apache.cassandra.tools.nodetool.stats.GcStatsHolder;
  import org.apache.cassandra.tools.nodetool.stats.GcStatsPrinter;
  import picocli.CommandLine.Command;
  import picocli.CommandLine.Option;
  
  @Command(name = "gcstats", description = "Print GC Statistics")
  public class GcStats extends AbstractCommand
  {
      @Option(paramLabel = "format",
              names = { "-F", "--format" },
              description = "Output format (json, yaml, table)")
      private String outputFormat = "";
  
      @Option(paramLabel = "human_readable",
              names = { "-H", "--human-readable" },
              description = "Display gcstats with human-readable units")
      private boolean humanReadable = false;
  
      @Override
      public void execute(NodeProbe probe)
      {
          if (!outputFormat.isEmpty() && !"json".equals(outputFormat) && !"yaml".equals(outputFormat) && !"table".equals(outputFormat))
              throw new IllegalArgumentException("arguments for -F are json, yaml, table only.");
  
          GcStatsPrinter.from(outputFormat).print(new GcStatsHolder(probe, humanReadable), probe.output().out);
      }
  }