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   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
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   *
   *     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,
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  package org.apache.cassandra.tools.nodetool;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.cassandra.tools.NodeProbe;
  import org.apache.cassandra.tools.nodetool.layout.CassandraUsage;
  import picocli.CommandLine.Command;
  import picocli.CommandLine.Option;
  import picocli.CommandLine.Parameters;
  
  import static org.apache.cassandra.tools.nodetool.CommandUtils.parseOptionalKeyspace;
  import static org.apache.cassandra.tools.nodetool.CommandUtils.parseOptionalTables;
  import static org.apache.commons.lang3.StringUtils.EMPTY;
  
  // TODO CASSANDRA-20793 Types of input aguments shouldn't be mixed in the same command. The keyspace, table and SSTable file arguments should have their own commands.
  @Command(name = "compact", description = "Force a (major) compaction on one or more tables or user-defined compaction on given SSTables")
  public class Compact extends AbstractCommand
  {
      @CassandraUsage(usage = "[<keyspace> <tables>...] or <SSTable file>...",
                      description = "The keyspace followed by one or many tables or list of SSTable data files when using --user-defined")
      @Parameters(index = "0..*", description = "The keyspace followed by one or many tables or " +
                                                "list of SSTable data files when using --user-defined")
      private List<String> args = new ArrayList<>();
  
      @Option(paramLabel = "split_output", names = { "-s", "--split-output" }, description = "Use -s to not create a single big file")
      private boolean splitOutput = false;
  
      @Option(paramLabel = "user_defined", names = { "--user-defined" }, description = "Use --user-defined to submit listed files for user-defined compaction")
      private boolean userDefined = false;
  
      @Option(paramLabel = "start_token", names = { "-st", "--start-token" }, description = "Use -st to specify a token at which the compaction range starts (inclusive)")
      private String startToken = EMPTY;
  
      @Option(paramLabel = "end_token", names = { "-et", "--end-token" }, description = "Use -et to specify a token at which compaction range ends (inclusive)")
      private String endToken = EMPTY;
  
      @Option(paramLabel = "partition_key", names = { "--partition" }, description = "String representation of the partition key")
      private String partitionKey = EMPTY;
  
      @Option(paramLabel = "jobs",
              names = {"-j", "--jobs"},
              description = "Use -j to specify the maximum number of threads to use for parallel compaction. " +
                            "If not set, up to half the compaction threads will be used. " +
                            "If set to 0, the major compaction will use all threads and will not permit other compactions to run until it completes (use with caution).")
      private Integer parallelism = null;
  
      @Override
      public void execute(NodeProbe probe)
      {
          final boolean startEndTokenProvided = !(startToken.isEmpty() && endToken.isEmpty());
          final boolean partitionKeyProvided = !partitionKey.isEmpty();
          final boolean tokenProvided = startEndTokenProvided || partitionKeyProvided;
          if (splitOutput && (userDefined || tokenProvided))
          {
              throw new RuntimeException("Invalid option combination: Can not use split-output here");
          }
          if (userDefined && tokenProvided)
          {
              throw new RuntimeException("Invalid option combination: Can not provide tokens when using user-defined");
          }
  
          if (userDefined)
          {
              try
              {
                  String userDefinedFiles = String.join(",", args);
                  probe.forceUserDefinedCompaction(userDefinedFiles);
              } catch (Exception e) {
                  throw new RuntimeException("Error occurred during user defined compaction", e);
              }
              return;
          }
  
          List<String> keyspaces = parseOptionalKeyspace(args, probe);
          String[] tableNames = parseOptionalTables(args);
  
          for (String keyspace : keyspaces)
          {
              try
              {
                  if (startEndTokenProvided)
                  {
                      probe.forceKeyspaceCompactionForTokenRange(keyspace, startToken, endToken, tableNames);
                  }
                  else if (partitionKeyProvided)
                  {
                      probe.forceKeyspaceCompactionForPartitionKey(keyspace, partitionKey, tableNames);
                  }
                  else
                  {
                      if (parallelism != null)
                          probe.forceKeyspaceCompaction(splitOutput, parallelism, keyspace, tableNames);
                      else // avoid referring to the new method to work with older versions
                          probe.forceKeyspaceCompaction(splitOutput, keyspace, tableNames);
                  }
              } catch (Exception e)
              {
                  throw new RuntimeException("Error occurred during compaction", e);
              }
          }
      }
  }
  