/*
 * 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);
    }
}