KAFKA-19618 the `record-size` and `throughput`arguments don't work in TestRaftServer (#20379)

The `record-size` and `throughput` arguments don’t work in
`TestRaftServer`. The `recordsPerSec` and `recordSize` values are always
hard-coded.

- Fix `recordsPerSec` and `recordSize` values hard-coded issue
- Add "Required" description to command-line options to make it clear to
users.

Reviewers: Chia-Ping Tsai <chia7712@gmail.com>

core/src/main/scala/kafka/tools/TestRaftServer.scala

@@ -25,7 +25,6 @@ import kafka.network.SocketServer
 import kafka.raft.{DefaultExternalKRaftMetrics, KafkaRaftManager, RaftManager}
 import kafka.server.{KafkaConfig, KafkaRequestHandlerPool}
 import kafka.utils.{CoreUtils, Logging}
-import org.apache.kafka.common.errors.InvalidConfigurationException
 import org.apache.kafka.common.message.ApiMessageType.ListenerType
 import org.apache.kafka.common.metrics.Metrics
 import org.apache.kafka.common.metrics.stats.Percentiles.BucketSizing
@@ -115,8 +114,8 @@ class TestRaftServer(
     workloadGenerator = new RaftWorkloadGenerator(
       raftManager,
       time,
-      recordsPerSec = 20000,
-      recordSize = 256
+      recordsPerSec = throughput,
+      recordSize = recordSize
     )
 
     val requestHandler = new TestRaftRequestHandler(
@@ -428,7 +427,7 @@ object TestRaftServer extends Logging {
   }
 
   private class TestRaftServerOptions(args: Array[String]) extends CommandDefaultOptions(args) {
-    val configOpt: OptionSpec[String] = parser.accepts("config", "Required configured file")
+    val configOpt: OptionSpec[String] = parser.accepts("config", "REQUIRED: The configured file")
       .withRequiredArg
       .describedAs("filename")
       .ofType(classOf[String])
@@ -446,12 +445,14 @@ object TestRaftServer extends Logging {
       .ofType(classOf[Int])
       .defaultsTo(256)
 
-    val directoryId: OptionSpec[String] = parser.accepts("replica-directory-id", "The directory id of the replica")
+    val directoryId: OptionSpec[String] = parser.accepts("replica-directory-id", "REQUIRED: The directory id of the replica")
       .withRequiredArg
       .describedAs("directory id")
       .ofType(classOf[String])
 
     options = parser.parse(args : _*)
+
+    def checkArgs(): Unit = CommandLineUtils.checkRequiredArgs(parser, options, configOpt, directoryId)
   }
 
   def main(args: Array[String]): Unit = {
@@ -459,16 +460,11 @@ object TestRaftServer extends Logging {
     try {
       CommandLineUtils.maybePrintHelpOrVersion(opts,
         "Standalone raft server for performance testing")
+      opts.checkArgs()
 
       val configFile = opts.options.valueOf(opts.configOpt)
-      if (configFile == null) {
-        throw new InvalidConfigurationException("Missing configuration file. Should specify with '--config'")
-      }
-
       val directoryIdAsString = opts.options.valueOf(opts.directoryId)
-      if (directoryIdAsString == null) {
-        throw new InvalidConfigurationException("Missing replica directory id. Should specify with --replica-directory-id")
-      }
+
       val serverProps = Utils.loadProps(configFile)
 
       // KafkaConfig requires either `process.roles` or `zookeeper.connect`. Neither are