kafka TopicCommand 源码
kafka TopicCommand 代码
文件路径：/core/src/main/scala/kafka/admin/TopicCommand.scala
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* 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
*
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* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
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package kafka.admin
import java.util
import java.util.{Collections, Properties}
import joptsimple._
import kafka.common.AdminCommandFailedException
import kafka.log.LogConfig
import kafka.utils._
import org.apache.kafka.clients.CommonClientConfigs
import org.apache.kafka.clients.admin.CreatePartitionsOptions
import org.apache.kafka.clients.admin.CreateTopicsOptions
import org.apache.kafka.clients.admin.DeleteTopicsOptions
import org.apache.kafka.clients.admin.{Admin, ListTopicsOptions, NewPartitions, NewTopic, PartitionReassignment, Config => JConfig}
import org.apache.kafka.common.{TopicCollection, TopicPartition, TopicPartitionInfo, Uuid}
import org.apache.kafka.common.config.ConfigResource.Type
import org.apache.kafka.common.config.{ConfigResource, TopicConfig}
import org.apache.kafka.common.errors.{ClusterAuthorizationException, TopicExistsException, UnsupportedVersionException}
import org.apache.kafka.common.internals.Topic
import org.apache.kafka.common.utils.Utils
import scala.annotation.nowarn
import scala.jdk.CollectionConverters._
import scala.collection._
import scala.compat.java8.OptionConverters._
import scala.concurrent.ExecutionException
object TopicCommand extends Logging {
def main(args: Array[String]): Unit = {
val opts = new TopicCommandOptions(args)
opts.checkArgs()
val topicService = TopicService(opts.commandConfig, opts.bootstrapServer)
var exitCode = 0
try {
if (opts.hasCreateOption)
topicService.createTopic(opts)
else if (opts.hasAlterOption)
topicService.alterTopic(opts)
else if (opts.hasListOption)
topicService.listTopics(opts)
else if (opts.hasDescribeOption)
topicService.describeTopic(opts)
else if (opts.hasDeleteOption)
topicService.deleteTopic(opts)
} catch {
case e: ExecutionException =>
if (e.getCause != null)
printException(e.getCause)
else
printException(e)
exitCode = 1
case e: Throwable =>
printException(e)
exitCode = 1
} finally {
topicService.close()
Exit.exit(exitCode)
}
}
private def printException(e: Throwable): Unit = {
println("Error while executing topic command : " + e.getMessage)
error(Utils.stackTrace(e))
}
class CommandTopicPartition(opts: TopicCommandOptions) {
val name = opts.topic.get
val partitions = opts.partitions
val replicationFactor = opts.replicationFactor
val replicaAssignment = opts.replicaAssignment
val configsToAdd = parseTopicConfigsToBeAdded(opts)
val configsToDelete = parseTopicConfigsToBeDeleted(opts)
val rackAwareMode = opts.rackAwareMode
def hasReplicaAssignment: Boolean = replicaAssignment.isDefined
def hasPartitions: Boolean = partitions.isDefined
def ifTopicDoesntExist(): Boolean = opts.ifNotExists
}
case class TopicDescription(topic: String,
topicId: Uuid,
numPartitions: Int,
replicationFactor: Int,
config: JConfig,
markedForDeletion: Boolean) {
def printDescription(): Unit = {
val configsAsString = config.entries.asScala.filter(!_.isDefault).map { ce => s"${ce.name}=${ce.value}" }.mkString(",")
print(s"Topic: $topic")
if(topicId != Uuid.ZERO_UUID) print(s"\tTopicId: $topicId")
print(s"\tPartitionCount: $numPartitions")
print(s"\tReplicationFactor: $replicationFactor")
print(s"\tConfigs: $configsAsString")
print(if (markedForDeletion) "\tMarkedForDeletion: true" else "")
println()
}
}
case class PartitionDescription(topic: String,
info: TopicPartitionInfo,
config: Option[JConfig],
markedForDeletion: Boolean,
reassignment: Option[PartitionReassignment]) {
private def minIsrCount: Option[Int] = {
config.map(_.get(TopicConfig.MIN_IN_SYNC_REPLICAS_CONFIG).value.toInt)
}
def isUnderReplicated: Boolean = {
getReplicationFactor(info, reassignment) - info.isr.size > 0
}
private def hasLeader: Boolean = {
info.leader != null
}
def isUnderMinIsr: Boolean = {
!hasLeader || minIsrCount.exists(info.isr.size < _)
}
def isAtMinIsrPartitions: Boolean = {
minIsrCount.contains(info.isr.size)
}
def hasUnavailablePartitions(liveBrokers: Set[Int]): Boolean = {
!hasLeader || !liveBrokers.contains(info.leader.id)
}
def printDescription(): Unit = {
print("\tTopic: " + topic)
print("\tPartition: " + info.partition)
print("\tLeader: " + (if (hasLeader) info.leader.id else "none"))
print("\tReplicas: " + info.replicas.asScala.map(_.id).mkString(","))
print("\tIsr: " + info.isr.asScala.map(_.id).mkString(","))
if (reassignment.nonEmpty) {
print("\tAdding Replicas: " + reassignment.get.addingReplicas().asScala.mkString(","))
print("\tRemoving Replicas: " + reassignment.get.removingReplicas().asScala.mkString(","))
}
print(if (markedForDeletion) "\tMarkedForDeletion: true" else "")
println()
}
}
class DescribeOptions(opts: TopicCommandOptions, liveBrokers: Set[Int]) {
val describeConfigs =
!opts.reportUnavailablePartitions &&
!opts.reportUnderReplicatedPartitions &&
!opts.reportUnderMinIsrPartitions &&
!opts.reportAtMinIsrPartitions
val describePartitions = !opts.reportOverriddenConfigs
private def shouldPrintUnderReplicatedPartitions(partitionDescription: PartitionDescription): Boolean = {
opts.reportUnderReplicatedPartitions && partitionDescription.isUnderReplicated
}
private def shouldPrintUnavailablePartitions(partitionDescription: PartitionDescription): Boolean = {
opts.reportUnavailablePartitions && partitionDescription.hasUnavailablePartitions(liveBrokers)
}
private def shouldPrintUnderMinIsrPartitions(partitionDescription: PartitionDescription): Boolean = {
opts.reportUnderMinIsrPartitions && partitionDescription.isUnderMinIsr
}
private def shouldPrintAtMinIsrPartitions(partitionDescription: PartitionDescription): Boolean = {
opts.reportAtMinIsrPartitions && partitionDescription.isAtMinIsrPartitions
}
private def shouldPrintTopicPartition(partitionDesc: PartitionDescription): Boolean = {
describeConfigs ||
shouldPrintUnderReplicatedPartitions(partitionDesc) ||
shouldPrintUnavailablePartitions(partitionDesc) ||
shouldPrintUnderMinIsrPartitions(partitionDesc) ||
shouldPrintAtMinIsrPartitions(partitionDesc)
}
def maybePrintPartitionDescription(desc: PartitionDescription): Unit = {
if (shouldPrintTopicPartition(desc))
desc.printDescription()
}
}
object TopicService {
def createAdminClient(commandConfig: Properties, bootstrapServer: Option[String]): Admin = {
bootstrapServer match {
case Some(serverList) => commandConfig.put(CommonClientConfigs.BOOTSTRAP_SERVERS_CONFIG, serverList)
case None =>
}
Admin.create(commandConfig)
}
def apply(commandConfig: Properties, bootstrapServer: Option[String]): TopicService =
new TopicService(createAdminClient(commandConfig, bootstrapServer))
}
case class TopicService private (adminClient: Admin) extends AutoCloseable {
def createTopic(opts: TopicCommandOptions): Unit = {
val topic = new CommandTopicPartition(opts)
if (Topic.hasCollisionChars(topic.name))
println("WARNING: Due to limitations in metric names, topics with a period ('.') or underscore ('_') could " +
"collide. To avoid issues it is best to use either, but not both.")
createTopic(topic)
}
def createTopic(topic: CommandTopicPartition): Unit = {
if (topic.replicationFactor.exists(rf => rf > Short.MaxValue || rf < 1))
throw new IllegalArgumentException(s"The replication factor must be between 1 and ${Short.MaxValue} inclusive")
if (topic.partitions.exists(partitions => partitions < 1))
throw new IllegalArgumentException(s"The partitions must be greater than 0")
try {
val newTopic = if (topic.hasReplicaAssignment)
new NewTopic(topic.name, asJavaReplicaReassignment(topic.replicaAssignment.get))
else {
new NewTopic(
topic.name,
topic.partitions.asJava,
topic.replicationFactor.map(_.toShort).map(Short.box).asJava)
}
val configsMap = topic.configsToAdd.stringPropertyNames()
.asScala
.map(name => name -> topic.configsToAdd.getProperty(name))
.toMap.asJava
newTopic.configs(configsMap)
val createResult = adminClient.createTopics(Collections.singleton(newTopic),
new CreateTopicsOptions().retryOnQuotaViolation(false))
createResult.all().get()
println(s"Created topic ${topic.name}.")
} catch {
case e : ExecutionException =>
if (e.getCause == null)
throw e
if (!(e.getCause.isInstanceOf[TopicExistsException] && topic.ifTopicDoesntExist()))
throw e.getCause
}
}
def listTopics(opts: TopicCommandOptions): Unit = {
println(getTopics(opts.topic, opts.excludeInternalTopics).mkString("\n"))
}
def alterTopic(opts: TopicCommandOptions): Unit = {
val topic = new CommandTopicPartition(opts)
val topics = getTopics(opts.topic, opts.excludeInternalTopics)
ensureTopicExists(topics, opts.topic, !opts.ifExists)
if (topics.nonEmpty) {
val topicsInfo = adminClient.describeTopics(topics.asJavaCollection).topicNameValues()
val newPartitions = topics.map { topicName =>
if (topic.hasReplicaAssignment) {
val startPartitionId = topicsInfo.get(topicName).get().partitions().size()
val newAssignment = {
val replicaMap = topic.replicaAssignment.get.drop(startPartitionId)
new util.ArrayList(replicaMap.map(p => p._2.asJava).asJavaCollection).asInstanceOf[util.List[util.List[Integer]]]
}
topicName -> NewPartitions.increaseTo(topic.partitions.get, newAssignment)
} else {
topicName -> NewPartitions.increaseTo(topic.partitions.get)
}
}.toMap
adminClient.createPartitions(newPartitions.asJava,
new CreatePartitionsOptions().retryOnQuotaViolation(false)).all().get()
}
}
def listAllReassignments(topicPartitions: util.Set[TopicPartition]): Map[TopicPartition, PartitionReassignment] = {
try {
adminClient.listPartitionReassignments(topicPartitions).reassignments().get().asScala
} catch {
case e: ExecutionException =>
e.getCause match {
case ex @ (_: UnsupportedVersionException | _: ClusterAuthorizationException) =>
logger.debug(s"Couldn't query reassignments through the AdminClient API: ${ex.getMessage}", ex)
Map()
case t => throw t
}
}
}
def describeTopic(opts: TopicCommandOptions): Unit = {
// If topicId is provided and not zero, will use topicId regardless of topic name
val inputTopicId = opts.topicId.map(Uuid.fromString).filter(uuid => uuid != Uuid.ZERO_UUID)
val useTopicId = inputTopicId.nonEmpty
val (topicIds, topics) = if (useTopicId)
(getTopicIds(inputTopicId, opts.excludeInternalTopics), Seq())
else
(Seq(), getTopics(opts.topic, opts.excludeInternalTopics))
// Only check topic name when topicId is not provided
if (useTopicId)
ensureTopicIdExists(topicIds, inputTopicId, !opts.ifExists)
else
ensureTopicExists(topics, opts.topic, !opts.ifExists)
val topicDescriptions = if (topicIds.nonEmpty) {
adminClient.describeTopics(TopicCollection.ofTopicIds(topicIds.toSeq.asJavaCollection)).allTopicIds().get().values().asScala
} else if (topics.nonEmpty) {
adminClient.describeTopics(TopicCollection.ofTopicNames(topics.asJavaCollection)).allTopicNames().get().values().asScala
} else {
Seq()
}
val topicNames = topicDescriptions.map(_.name())
val allConfigs = adminClient.describeConfigs(topicNames.map(new ConfigResource(Type.TOPIC, _)).asJavaCollection).values()
val liveBrokers = adminClient.describeCluster().nodes().get().asScala.map(_.id())
val describeOptions = new DescribeOptions(opts, liveBrokers.toSet)
val topicPartitions = topicDescriptions
.flatMap(td => td.partitions.iterator().asScala.map(p => new TopicPartition(td.name(), p.partition())))
.toSet.asJava
val reassignments = listAllReassignments(topicPartitions)
for (td <- topicDescriptions) {
val topicName = td.name
val topicId = td.topicId()
val config = allConfigs.get(new ConfigResource(Type.TOPIC, topicName)).get()
val sortedPartitions = td.partitions.asScala.sortBy(_.partition)
if (describeOptions.describeConfigs) {
val hasNonDefault = config.entries().asScala.exists(!_.isDefault)
if (!opts.reportOverriddenConfigs || hasNonDefault) {
val numPartitions = td.partitions().size
val firstPartition = td.partitions.iterator.next()
val reassignment = reassignments.get(new TopicPartition(td.name, firstPartition.partition))
val topicDesc = TopicDescription(topicName, topicId, numPartitions, getReplicationFactor(firstPartition, reassignment), config, markedForDeletion = false)
topicDesc.printDescription()
}
}
if (describeOptions.describePartitions) {
for (partition <- sortedPartitions) {
val reassignment = reassignments.get(new TopicPartition(td.name, partition.partition))
val partitionDesc = PartitionDescription(topicName, partition, Some(config), markedForDeletion = false, reassignment)
describeOptions.maybePrintPartitionDescription(partitionDesc)
}
}
}
}
def deleteTopic(opts: TopicCommandOptions): Unit = {
val topics = getTopics(opts.topic, opts.excludeInternalTopics)
ensureTopicExists(topics, opts.topic, !opts.ifExists)
adminClient.deleteTopics(topics.asJavaCollection, new DeleteTopicsOptions().retryOnQuotaViolation(false))
.all().get()
}
def getTopics(topicIncludeList: Option[String], excludeInternalTopics: Boolean = false): Seq[String] = {
val allTopics = if (excludeInternalTopics) {
adminClient.listTopics()
} else {
adminClient.listTopics(new ListTopicsOptions().listInternal(true))
}
doGetTopics(allTopics.names().get().asScala.toSeq.sorted, topicIncludeList, excludeInternalTopics)
}
def getTopicIds(topicIdIncludeList: Option[Uuid], excludeInternalTopics: Boolean = false): Seq[Uuid] = {
val allTopics = if (excludeInternalTopics) {
adminClient.listTopics()
} else {
adminClient.listTopics(new ListTopicsOptions().listInternal(true))
}
val allTopicIds = allTopics.listings().get().asScala.map(_.topicId()).toSeq.sorted
topicIdIncludeList.filter(allTopicIds.contains).toSeq
}
def close(): Unit = adminClient.close()
}
/**
* ensures topic existence and throws exception if topic doesn't exist
*
* @param foundTopics Topics that were found to match the requested topic name.
* @param requestedTopic Name of the topic that was requested.
* @param requireTopicExists Indicates if the topic needs to exist for the operation to be successful.
* If set to true, the command will throw an exception if the topic with the
* requested name does not exist.
*/
private def ensureTopicExists(foundTopics: Seq[String], requestedTopic: Option[String], requireTopicExists: Boolean): Unit = {
// If no topic name was mentioned, do not need to throw exception.
if (requestedTopic.isDefined && requireTopicExists && foundTopics.isEmpty) {
// If given topic doesn't exist then throw exception
throw new IllegalArgumentException(s"Topic '${requestedTopic.get}' does not exist as expected")
}
}
/**
* ensures topic existence and throws exception if topic doesn't exist
*
* @param foundTopicIds Topics that were found to match the requested topic id.
* @param requestedTopicId Id of the topic that was requested.
* @param requireTopicIdExists Indicates if the topic needs to exist for the operation to be successful.
* If set to true, the command will throw an exception if the topic with the
* requested id does not exist.
*/
private def ensureTopicIdExists(foundTopicIds: Seq[Uuid], requestedTopicId: Option[Uuid], requireTopicIdExists: Boolean): Unit = {
// If no topic id was mentioned, do not need to throw exception.
if (requestedTopicId.isDefined && requireTopicIdExists && foundTopicIds.isEmpty) {
// If given topicId doesn't exist then throw exception
throw new IllegalArgumentException(s"TopicId '${requestedTopicId.get}' does not exist as expected")
}
}
private def doGetTopics(allTopics: Seq[String], topicIncludeList: Option[String], excludeInternalTopics: Boolean): Seq[String] = {
if (topicIncludeList.isDefined) {
val topicsFilter = IncludeList(topicIncludeList.get)
allTopics.filter(topicsFilter.isTopicAllowed(_, excludeInternalTopics))
} else
allTopics.filterNot(Topic.isInternal(_) && excludeInternalTopics)
}
@nowarn("cat=deprecation")
def parseTopicConfigsToBeAdded(opts: TopicCommandOptions): Properties = {
val configsToBeAdded = opts.topicConfig.getOrElse(Collections.emptyList()).asScala.map(_.split("""\s*=\s*"""))
require(configsToBeAdded.forall(config => config.length == 2),
"Invalid topic config: all configs to be added must be in the format \"key=val\".")
val props = new Properties
configsToBeAdded.foreach(pair => props.setProperty(pair(0).trim, pair(1).trim))
LogConfig.validate(props)
if (props.containsKey(LogConfig.MessageFormatVersionProp)) {
println(s"WARNING: The configuration ${LogConfig.MessageFormatVersionProp}=${props.getProperty(LogConfig.MessageFormatVersionProp)} is specified. " +
"This configuration will be ignored if the version is newer than the inter.broker.protocol.version specified in the broker or " +
"if the inter.broker.protocol.version is 3.0 or newer. This configuration is deprecated and it will be removed in Apache Kafka 4.0.")
}
props
}
def parseTopicConfigsToBeDeleted(opts: TopicCommandOptions): Seq[String] = {
val configsToBeDeleted = opts.configsToDelete.getOrElse(Collections.emptyList()).asScala.map(_.trim())
val propsToBeDeleted = new Properties
configsToBeDeleted.foreach(propsToBeDeleted.setProperty(_, ""))
LogConfig.validateNames(propsToBeDeleted)
configsToBeDeleted
}
def parseReplicaAssignment(replicaAssignmentList: String): Map[Int, List[Int]] = {
val partitionList = replicaAssignmentList.split(",")
val ret = new mutable.LinkedHashMap[Int, List[Int]]()
for (i <- 0 until partitionList.size) {
val brokerList = partitionList(i).split(":").map(s => s.trim().toInt)
val duplicateBrokers = CoreUtils.duplicates(brokerList)
if (duplicateBrokers.nonEmpty)
throw new AdminCommandFailedException(s"Partition replica lists may not contain duplicate entries: ${duplicateBrokers.mkString(",")}")
ret.put(i, brokerList.toList)
if (ret(i).size != ret(0).size)
throw new AdminOperationException("Partition " + i + " has different replication factor: " + brokerList)
}
ret
}
def asJavaReplicaReassignment(original: Map[Int, List[Int]]): util.Map[Integer, util.List[Integer]] = {
original.map(f => Integer.valueOf(f._1) -> f._2.map(e => Integer.valueOf(e)).asJava).asJava
}
private def getReplicationFactor(tpi: TopicPartitionInfo, reassignment: Option[PartitionReassignment]): Int = {
// It is possible for a reassignment to complete between the time we have fetched its state and the time
// we fetch partition metadata. In ths case, we ignore the reassignment when determining replication factor.
def isReassignmentInProgress(ra: PartitionReassignment): Boolean = {
// Reassignment is still in progress as long as the removing and adding replicas are still present
val allReplicaIds = tpi.replicas.asScala.map(_.id).toSet
val changingReplicaIds = ra.removingReplicas.asScala.map(_.intValue).toSet ++ ra.addingReplicas.asScala.map(_.intValue).toSet
allReplicaIds.exists(changingReplicaIds.contains)
}
reassignment match {
case Some(ra) if isReassignmentInProgress(ra) => ra.replicas.asScala.diff(ra.addingReplicas.asScala).size
case _=> tpi.replicas.size
}
}
class TopicCommandOptions(args: Array[String]) extends CommandDefaultOptions(args) {
private val bootstrapServerOpt = parser.accepts("bootstrap-server", "REQUIRED: The Kafka server to connect to.")
.withRequiredArg
.describedAs("server to connect to")
.ofType(classOf[String])
private val commandConfigOpt = parser.accepts("command-config", "Property file containing configs to be passed to Admin Client. " +
"This is used only with --bootstrap-server option for describing and altering broker configs.")
.withRequiredArg
.describedAs("command config property file")
.ofType(classOf[String])
private val listOpt = parser.accepts("list", "List all available topics.")
private val createOpt = parser.accepts("create", "Create a new topic.")
private val deleteOpt = parser.accepts("delete", "Delete a topic")
private val alterOpt = parser.accepts("alter", "Alter the number of partitions, replica assignment, and/or configuration for the topic.")
private val describeOpt = parser.accepts("describe", "List details for the given topics.")
private val topicOpt = parser.accepts("topic", "The topic to create, alter, describe or delete. It also accepts a regular " +
"expression, except for --create option. Put topic name in double quotes and use the '\\' prefix " +
"to escape regular expression symbols; e.g. \"test\\.topic\".")
.withRequiredArg
.describedAs("topic")
.ofType(classOf[String])
private val topicIdOpt = parser.accepts("topic-id", "The topic-id to describe." +
"This is used only with --bootstrap-server option for describing topics.")
.withRequiredArg
.describedAs("topic-id")
.ofType(classOf[String])
private val nl = System.getProperty("line.separator")
private val kafkaConfigsCanAlterTopicConfigsViaBootstrapServer =
" (the kafka-configs CLI supports altering topic configs with a --bootstrap-server option)"
private val configOpt = parser.accepts("config", "A topic configuration override for the topic being created or altered." +
" The following is a list of valid configurations: " + nl + LogConfig.configNames.map("\t" + _).mkString(nl) + nl +
"See the Kafka documentation for full details on the topic configs." +
" It is supported only in combination with --create if --bootstrap-server option is used" +
kafkaConfigsCanAlterTopicConfigsViaBootstrapServer + ".")
.withRequiredArg
.describedAs("name=value")
.ofType(classOf[String])
private val deleteConfigOpt = parser.accepts("delete-config", "A topic configuration override to be removed for an existing topic (see the list of configurations under the --config option). " +
"Not supported with the --bootstrap-server option.")
.withRequiredArg
.describedAs("name")
.ofType(classOf[String])
private val partitionsOpt = parser.accepts("partitions", "The number of partitions for the topic being created or " +
"altered (WARNING: If partitions are increased for a topic that has a key, the partition logic or ordering of the messages will be affected). If not supplied for create, defaults to the cluster default.")
.withRequiredArg
.describedAs("# of partitions")
.ofType(classOf[java.lang.Integer])
private val replicationFactorOpt = parser.accepts("replication-factor", "The replication factor for each partition in the topic being created. If not supplied, defaults to the cluster default.")
.withRequiredArg
.describedAs("replication factor")
.ofType(classOf[java.lang.Integer])
private val replicaAssignmentOpt = parser.accepts("replica-assignment", "A list of manual partition-to-broker assignments for the topic being created or altered.")
.withRequiredArg
.describedAs("broker_id_for_part1_replica1 : broker_id_for_part1_replica2 , " +
"broker_id_for_part2_replica1 : broker_id_for_part2_replica2 , ...")
.ofType(classOf[String])
private val reportUnderReplicatedPartitionsOpt = parser.accepts("under-replicated-partitions",
"if set when describing topics, only show under replicated partitions")
private val reportUnavailablePartitionsOpt = parser.accepts("unavailable-partitions",
"if set when describing topics, only show partitions whose leader is not available")
private val reportUnderMinIsrPartitionsOpt = parser.accepts("under-min-isr-partitions",
"if set when describing topics, only show partitions whose isr count is less than the configured minimum.")
private val reportAtMinIsrPartitionsOpt = parser.accepts("at-min-isr-partitions",
"if set when describing topics, only show partitions whose isr count is equal to the configured minimum.")
private val topicsWithOverridesOpt = parser.accepts("topics-with-overrides",
"if set when describing topics, only show topics that have overridden configs")
private val ifExistsOpt = parser.accepts("if-exists",
"if set when altering or deleting or describing topics, the action will only execute if the topic exists.")
private val ifNotExistsOpt = parser.accepts("if-not-exists",
"if set when creating topics, the action will only execute if the topic does not already exist.")
private val disableRackAware = parser.accepts("disable-rack-aware", "Disable rack aware replica assignment")
private val excludeInternalTopicOpt = parser.accepts("exclude-internal",
"exclude internal topics when running list or describe command. The internal topics will be listed by default")
options = parser.parse(args : _*)
private val allTopicLevelOpts = immutable.Set[OptionSpec[_]](alterOpt, createOpt, describeOpt, listOpt, deleteOpt)
private val allReplicationReportOpts = Set(reportUnderReplicatedPartitionsOpt, reportUnderMinIsrPartitionsOpt, reportAtMinIsrPartitionsOpt, reportUnavailablePartitionsOpt)
def has(builder: OptionSpec[_]): Boolean = options.has(builder)
def valueAsOption[A](option: OptionSpec[A], defaultValue: Option[A] = None): Option[A] = if (has(option)) Some(options.valueOf(option)) else defaultValue
def valuesAsOption[A](option: OptionSpec[A], defaultValue: Option[util.List[A]] = None): Option[util.List[A]] = if (has(option)) Some(options.valuesOf(option)) else defaultValue
def hasCreateOption: Boolean = has(createOpt)
def hasAlterOption: Boolean = has(alterOpt)
def hasListOption: Boolean = has(listOpt)
def hasDescribeOption: Boolean = has(describeOpt)
def hasDeleteOption: Boolean = has(deleteOpt)
def bootstrapServer: Option[String] = valueAsOption(bootstrapServerOpt)
def commandConfig: Properties = if (has(commandConfigOpt)) Utils.loadProps(options.valueOf(commandConfigOpt)) else new Properties()
def topic: Option[String] = valueAsOption(topicOpt)
def topicId: Option[String] = valueAsOption(topicIdOpt)
def partitions: Option[Integer] = valueAsOption(partitionsOpt)
def replicationFactor: Option[Integer] = valueAsOption(replicationFactorOpt)
def replicaAssignment: Option[Map[Int, List[Int]]] =
if (has(replicaAssignmentOpt) && !Option(options.valueOf(replicaAssignmentOpt)).getOrElse("").isEmpty)
Some(parseReplicaAssignment(options.valueOf(replicaAssignmentOpt)))
else
None
def rackAwareMode: RackAwareMode = if (has(disableRackAware)) RackAwareMode.Disabled else RackAwareMode.Enforced
def reportUnderReplicatedPartitions: Boolean = has(reportUnderReplicatedPartitionsOpt)
def reportUnavailablePartitions: Boolean = has(reportUnavailablePartitionsOpt)
def reportUnderMinIsrPartitions: Boolean = has(reportUnderMinIsrPartitionsOpt)
def reportAtMinIsrPartitions: Boolean = has(reportAtMinIsrPartitionsOpt)
def reportOverriddenConfigs: Boolean = has(topicsWithOverridesOpt)
def ifExists: Boolean = has(ifExistsOpt)
def ifNotExists: Boolean = has(ifNotExistsOpt)
def excludeInternalTopics: Boolean = has(excludeInternalTopicOpt)
def topicConfig: Option[util.List[String]] = valuesAsOption(configOpt)
def configsToDelete: Option[util.List[String]] = valuesAsOption(deleteConfigOpt)
def checkArgs(): Unit = {
if (args.length == 0)
CommandLineUtils.printUsageAndDie(parser, "Create, delete, describe, or change a topic.")
CommandLineUtils.printHelpAndExitIfNeeded(this, "This tool helps to create, delete, describe, or change a topic.")
// should have exactly one action
val actions = Seq(createOpt, listOpt, alterOpt, describeOpt, deleteOpt).count(options.has)
if (actions != 1)
CommandLineUtils.printUsageAndDie(parser, "Command must include exactly one action: --list, --describe, --create, --alter or --delete")
// check required args
if (!has(bootstrapServerOpt))
throw new IllegalArgumentException("--bootstrap-server must be specified")
if (has(describeOpt) && has(ifExistsOpt)) {
if (!has(topicOpt) && !has(topicIdOpt))
CommandLineUtils.printUsageAndDie(parser, "--topic or --topic-id is required to describe a topic")
if (has(topicOpt) && has(topicIdOpt))
println("Only topic id will be used when both --topic and --topic-id are specified and topicId is not Uuid.ZERO_UUID")
}
if (!has(listOpt) && !has(describeOpt))
CommandLineUtils.checkRequiredArgs(parser, options, topicOpt)
if (has(alterOpt)) {
CommandLineUtils.checkInvalidArgsSet(parser, options, Set(bootstrapServerOpt, configOpt), Set(alterOpt),
Some(kafkaConfigsCanAlterTopicConfigsViaBootstrapServer))
CommandLineUtils.checkRequiredArgs(parser, options, partitionsOpt)
}
// check invalid args
CommandLineUtils.checkInvalidArgs(parser, options, configOpt, allTopicLevelOpts -- Set(alterOpt, createOpt))
CommandLineUtils.checkInvalidArgs(parser, options, deleteConfigOpt, allTopicLevelOpts -- Set(alterOpt) ++ Set(bootstrapServerOpt))
CommandLineUtils.checkInvalidArgs(parser, options, partitionsOpt, allTopicLevelOpts -- Set(alterOpt, createOpt))
CommandLineUtils.checkInvalidArgs(parser, options, replicationFactorOpt, allTopicLevelOpts -- Set(createOpt))
CommandLineUtils.checkInvalidArgs(parser, options, replicaAssignmentOpt, allTopicLevelOpts -- Set(createOpt,alterOpt))
if(options.has(createOpt))
CommandLineUtils.checkInvalidArgs(parser, options, replicaAssignmentOpt, Set(partitionsOpt, replicationFactorOpt))
CommandLineUtils.checkInvalidArgs(parser, options, reportUnderReplicatedPartitionsOpt,
allTopicLevelOpts -- Set(describeOpt) ++ allReplicationReportOpts - reportUnderReplicatedPartitionsOpt + topicsWithOverridesOpt)
CommandLineUtils.checkInvalidArgs(parser, options, reportUnderMinIsrPartitionsOpt,
allTopicLevelOpts -- Set(describeOpt) ++ allReplicationReportOpts - reportUnderMinIsrPartitionsOpt + topicsWithOverridesOpt)
CommandLineUtils.checkInvalidArgs(parser, options, reportAtMinIsrPartitionsOpt,
allTopicLevelOpts -- Set(describeOpt) ++ allReplicationReportOpts - reportAtMinIsrPartitionsOpt + topicsWithOverridesOpt)
CommandLineUtils.checkInvalidArgs(parser, options, reportUnavailablePartitionsOpt,
allTopicLevelOpts -- Set(describeOpt) ++ allReplicationReportOpts - reportUnavailablePartitionsOpt + topicsWithOverridesOpt)
CommandLineUtils.checkInvalidArgs(parser, options, topicsWithOverridesOpt,
allTopicLevelOpts -- Set(describeOpt) ++ allReplicationReportOpts)
CommandLineUtils.checkInvalidArgs(parser, options, ifExistsOpt, allTopicLevelOpts -- Set(alterOpt, deleteOpt, describeOpt))
CommandLineUtils.checkInvalidArgs(parser, options, ifNotExistsOpt, allTopicLevelOpts -- Set(createOpt))
CommandLineUtils.checkInvalidArgs(parser, options, excludeInternalTopicOpt, allTopicLevelOpts -- Set(listOpt, describeOpt))
}
}
}
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