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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
*
* 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 kafka.server
import kafka.admin.AdminUtils
import kafka.api.ElectLeadersRequestOps
import kafka.common.OffsetAndMetadata
import kafka.controller.ReplicaAssignment
import kafka.coordinator.group._
import kafka.coordinator.transaction.{InitProducerIdResult, TransactionCoordinator}
import kafka.log.AppendOrigin
import kafka.message.ZStdCompressionCodec
import kafka.network.RequestChannel
import kafka.server.QuotaFactory.{QuotaManagers, UnboundedQuota}
import kafka.server.metadata.ConfigRepository
import kafka.utils.Implicits._
import kafka.utils.{CoreUtils, Logging}
import org.apache.kafka.clients.admin.AlterConfigOp.OpType
import org.apache.kafka.clients.admin.{AlterConfigOp, ConfigEntry}
import org.apache.kafka.common.acl.AclOperation._
import org.apache.kafka.common.acl.AclOperation
import org.apache.kafka.common.config.ConfigResource
import org.apache.kafka.common.errors._
import org.apache.kafka.common.internals.Topic.{GROUP_METADATA_TOPIC_NAME, TRANSACTION_STATE_TOPIC_NAME, isInternal}
import org.apache.kafka.common.internals.{FatalExitError, Topic}
import org.apache.kafka.common.message.AlterConfigsResponseData.AlterConfigsResourceResponse
import org.apache.kafka.common.message.AlterPartitionReassignmentsResponseData.{ReassignablePartitionResponse, ReassignableTopicResponse}
import org.apache.kafka.common.message.CreatePartitionsResponseData.CreatePartitionsTopicResult
import org.apache.kafka.common.message.CreateTopicsRequestData.CreatableTopic
import org.apache.kafka.common.message.CreateTopicsResponseData.{CreatableTopicResult, CreatableTopicResultCollection}
import org.apache.kafka.common.message.DeleteGroupsResponseData.{DeletableGroupResult, DeletableGroupResultCollection}
import org.apache.kafka.common.message.DeleteRecordsResponseData.{DeleteRecordsPartitionResult, DeleteRecordsTopicResult}
import org.apache.kafka.common.message.DeleteTopicsResponseData.{DeletableTopicResult, DeletableTopicResultCollection}
import org.apache.kafka.common.message.ElectLeadersResponseData.{PartitionResult, ReplicaElectionResult}
import org.apache.kafka.common.message.LeaveGroupResponseData.MemberResponse
import org.apache.kafka.common.message.ListOffsetsRequestData.ListOffsetsPartition
import org.apache.kafka.common.message.ListOffsetsResponseData.{ListOffsetsPartitionResponse, ListOffsetsTopicResponse}
import org.apache.kafka.common.message.MetadataResponseData.{MetadataResponsePartition, MetadataResponseTopic}
import org.apache.kafka.common.message.OffsetForLeaderEpochRequestData.OffsetForLeaderTopic
import org.apache.kafka.common.message.OffsetForLeaderEpochResponseData.{EpochEndOffset, OffsetForLeaderTopicResult, OffsetForLeaderTopicResultCollection}
import org.apache.kafka.common.message._
import org.apache.kafka.common.metrics.Metrics
import org.apache.kafka.common.network.{ListenerName, Send}
import org.apache.kafka.common.protocol.{ApiKeys, ApiMessage, Errors}
import org.apache.kafka.common.record._
import org.apache.kafka.common.replica.ClientMetadata
import org.apache.kafka.common.replica.ClientMetadata.DefaultClientMetadata
import org.apache.kafka.common.requests.FindCoordinatorRequest.CoordinatorType
import org.apache.kafka.common.requests.OffsetFetchResponse.PartitionData
import org.apache.kafka.common.requests.ProduceResponse.PartitionResponse
import org.apache.kafka.common.requests._
import org.apache.kafka.common.resource.Resource.CLUSTER_NAME
import org.apache.kafka.common.resource.ResourceType._
import org.apache.kafka.common.resource.{Resource, ResourceType}
import org.apache.kafka.common.security.auth.{KafkaPrincipal, SecurityProtocol}
import org.apache.kafka.common.security.token.delegation.{DelegationToken, TokenInformation}
import org.apache.kafka.common.utils.{ProducerIdAndEpoch, Time}
import org.apache.kafka.common.{Node, TopicIdPartition, TopicPartition, Uuid}
import org.apache.kafka.server.authorizer._
import java.lang.{Long => JLong}
import java.nio.ByteBuffer
import java.util
import java.util.concurrent.ConcurrentHashMap
import java.util.concurrent.atomic.AtomicInteger
import java.util.{Collections, Optional}
import org.apache.kafka.server.common.MetadataVersion
import org.apache.kafka.server.common.MetadataVersion.{IBP_0_11_0_IV0, IBP_2_3_IV0}
import scala.annotation.nowarn
import scala.collection.{Map, Seq, Set, immutable, mutable}
import scala.jdk.CollectionConverters._
import scala.util.{Failure, Success, Try}
/**
* Logic to handle the various Kafka requests
*/
class KafkaApis(val requestChannel: RequestChannel,
val metadataSupport: MetadataSupport,
val replicaManager: ReplicaManager,
val groupCoordinator: GroupCoordinator,
val txnCoordinator: TransactionCoordinator,
val autoTopicCreationManager: AutoTopicCreationManager,
val brokerId: Int,
val config: KafkaConfig,
val configRepository: ConfigRepository,
val metadataCache: MetadataCache,
val metrics: Metrics,
val authorizer: Option[Authorizer],
val quotas: QuotaManagers,
val fetchManager: FetchManager,
brokerTopicStats: BrokerTopicStats,
val clusterId: String,
time: Time,
val tokenManager: DelegationTokenManager,
val apiVersionManager: ApiVersionManager) extends ApiRequestHandler with Logging {
type FetchResponseStats = Map[TopicPartition, RecordConversionStats]
this.logIdent = "[KafkaApi-%d] ".format(brokerId)
val configHelper = new ConfigHelper(metadataCache, config, configRepository)
val authHelper = new AuthHelper(authorizer)
val requestHelper = new RequestHandlerHelper(requestChannel, quotas, time)
val aclApis = new AclApis(authHelper, authorizer, requestHelper, "broker", config)
val configManager = new ConfigAdminManager(brokerId, config, configRepository)
def close(): Unit = {
aclApis.close()
info("Shutdown complete.")
}
private def isForwardingEnabled(request: RequestChannel.Request): Boolean = {
metadataSupport.forwardingManager.isDefined && request.context.principalSerde.isPresent
}
private def maybeForwardToController(
request: RequestChannel.Request,
handler: RequestChannel.Request => Unit
): Unit = {
def responseCallback(responseOpt: Option[AbstractResponse]): Unit = {
responseOpt match {
case Some(response) => requestHelper.sendForwardedResponse(request, response)
case None => handleInvalidVersionsDuringForwarding(request)
}
}
metadataSupport.maybeForward(request, handler, responseCallback)
}
private def handleInvalidVersionsDuringForwarding(request: RequestChannel.Request): Unit = {
info(s"The client connection will be closed due to controller responded " +
s"unsupported version exception during $request forwarding. " +
s"This could happen when the controller changed after the connection was established.")
requestChannel.closeConnection(request, Collections.emptyMap())
}
private def forwardToControllerOrFail(
request: RequestChannel.Request
): Unit = {
def errorHandler(request: RequestChannel.Request): Unit = {
throw new IllegalStateException(s"Unable to forward $request to the controller")
}
maybeForwardToController(request, errorHandler)
}
/**
* Top-level method that handles all requests and multiplexes to the right api
*/
override def handle(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
try {
trace(s"Handling request:${request.requestDesc(true)} from connection ${request.context.connectionId};" +
s"securityProtocol:${request.context.securityProtocol},principal:${request.context.principal}")
if (!apiVersionManager.isApiEnabled(request.header.apiKey)) {
// The socket server will reject APIs which are not exposed in this scope and close the connection
// before handing them to the request handler, so this path should not be exercised in practice
throw new IllegalStateException(s"API ${request.header.apiKey} is not enabled")
}
request.header.apiKey match {
case ApiKeys.PRODUCE => handleProduceRequest(request, requestLocal)
case ApiKeys.FETCH => handleFetchRequest(request)
case ApiKeys.LIST_OFFSETS => handleListOffsetRequest(request)
case ApiKeys.METADATA => handleTopicMetadataRequest(request)
case ApiKeys.LEADER_AND_ISR => handleLeaderAndIsrRequest(request)
case ApiKeys.STOP_REPLICA => handleStopReplicaRequest(request)
case ApiKeys.UPDATE_METADATA => handleUpdateMetadataRequest(request, requestLocal)
case ApiKeys.CONTROLLED_SHUTDOWN => handleControlledShutdownRequest(request)
case ApiKeys.OFFSET_COMMIT => handleOffsetCommitRequest(request, requestLocal)
case ApiKeys.OFFSET_FETCH => handleOffsetFetchRequest(request)
case ApiKeys.FIND_COORDINATOR => handleFindCoordinatorRequest(request)
case ApiKeys.JOIN_GROUP => handleJoinGroupRequest(request, requestLocal)
case ApiKeys.HEARTBEAT => handleHeartbeatRequest(request)
case ApiKeys.LEAVE_GROUP => handleLeaveGroupRequest(request)
case ApiKeys.SYNC_GROUP => handleSyncGroupRequest(request, requestLocal)
case ApiKeys.DESCRIBE_GROUPS => handleDescribeGroupRequest(request)
case ApiKeys.LIST_GROUPS => handleListGroupsRequest(request)
case ApiKeys.SASL_HANDSHAKE => handleSaslHandshakeRequest(request)
case ApiKeys.API_VERSIONS => handleApiVersionsRequest(request)
case ApiKeys.CREATE_TOPICS => maybeForwardToController(request, handleCreateTopicsRequest)
case ApiKeys.DELETE_TOPICS => maybeForwardToController(request, handleDeleteTopicsRequest)
case ApiKeys.DELETE_RECORDS => handleDeleteRecordsRequest(request)
case ApiKeys.INIT_PRODUCER_ID => handleInitProducerIdRequest(request, requestLocal)
case ApiKeys.OFFSET_FOR_LEADER_EPOCH => handleOffsetForLeaderEpochRequest(request)
case ApiKeys.ADD_PARTITIONS_TO_TXN => handleAddPartitionToTxnRequest(request, requestLocal)
case ApiKeys.ADD_OFFSETS_TO_TXN => handleAddOffsetsToTxnRequest(request, requestLocal)
case ApiKeys.END_TXN => handleEndTxnRequest(request, requestLocal)
case ApiKeys.WRITE_TXN_MARKERS => handleWriteTxnMarkersRequest(request, requestLocal)
case ApiKeys.TXN_OFFSET_COMMIT => handleTxnOffsetCommitRequest(request, requestLocal)
case ApiKeys.DESCRIBE_ACLS => handleDescribeAcls(request)
case ApiKeys.CREATE_ACLS => maybeForwardToController(request, handleCreateAcls)
case ApiKeys.DELETE_ACLS => maybeForwardToController(request, handleDeleteAcls)
case ApiKeys.ALTER_CONFIGS => handleAlterConfigsRequest(request)
case ApiKeys.DESCRIBE_CONFIGS => handleDescribeConfigsRequest(request)
case ApiKeys.ALTER_REPLICA_LOG_DIRS => handleAlterReplicaLogDirsRequest(request)
case ApiKeys.DESCRIBE_LOG_DIRS => handleDescribeLogDirsRequest(request)
case ApiKeys.SASL_AUTHENTICATE => handleSaslAuthenticateRequest(request)
case ApiKeys.CREATE_PARTITIONS => maybeForwardToController(request, handleCreatePartitionsRequest)
case ApiKeys.CREATE_DELEGATION_TOKEN => maybeForwardToController(request, handleCreateTokenRequest)
case ApiKeys.RENEW_DELEGATION_TOKEN => maybeForwardToController(request, handleRenewTokenRequest)
case ApiKeys.EXPIRE_DELEGATION_TOKEN => maybeForwardToController(request, handleExpireTokenRequest)
case ApiKeys.DESCRIBE_DELEGATION_TOKEN => handleDescribeTokensRequest(request)
case ApiKeys.DELETE_GROUPS => handleDeleteGroupsRequest(request, requestLocal)
case ApiKeys.ELECT_LEADERS => maybeForwardToController(request, handleElectLeaders)
case ApiKeys.INCREMENTAL_ALTER_CONFIGS => handleIncrementalAlterConfigsRequest(request)
case ApiKeys.ALTER_PARTITION_REASSIGNMENTS => maybeForwardToController(request, handleAlterPartitionReassignmentsRequest)
case ApiKeys.LIST_PARTITION_REASSIGNMENTS => maybeForwardToController(request, handleListPartitionReassignmentsRequest)
case ApiKeys.OFFSET_DELETE => handleOffsetDeleteRequest(request, requestLocal)
case ApiKeys.DESCRIBE_CLIENT_QUOTAS => handleDescribeClientQuotasRequest(request)
case ApiKeys.ALTER_CLIENT_QUOTAS => maybeForwardToController(request, handleAlterClientQuotasRequest)
case ApiKeys.DESCRIBE_USER_SCRAM_CREDENTIALS => handleDescribeUserScramCredentialsRequest(request)
case ApiKeys.ALTER_USER_SCRAM_CREDENTIALS => maybeForwardToController(request, handleAlterUserScramCredentialsRequest)
case ApiKeys.ALTER_PARTITION => handleAlterPartitionRequest(request)
case ApiKeys.UPDATE_FEATURES => maybeForwardToController(request, handleUpdateFeatures)
case ApiKeys.ENVELOPE => handleEnvelope(request, requestLocal)
case ApiKeys.DESCRIBE_CLUSTER => handleDescribeCluster(request)
case ApiKeys.DESCRIBE_PRODUCERS => handleDescribeProducersRequest(request)
case ApiKeys.UNREGISTER_BROKER => forwardToControllerOrFail(request)
case ApiKeys.DESCRIBE_TRANSACTIONS => handleDescribeTransactionsRequest(request)
case ApiKeys.LIST_TRANSACTIONS => handleListTransactionsRequest(request)
case ApiKeys.ALLOCATE_PRODUCER_IDS => handleAllocateProducerIdsRequest(request)
case ApiKeys.DESCRIBE_QUORUM => forwardToControllerOrFail(request)
case _ => throw new IllegalStateException(s"No handler for request api key ${request.header.apiKey}")
}
} catch {
case e: FatalExitError => throw e
case e: Throwable =>
error(s"Unexpected error handling request ${request.requestDesc(true)} " +
s"with context ${request.context}", e)
requestHelper.handleError(request, e)
} finally {
// try to complete delayed action. In order to avoid conflicting locking, the actions to complete delayed requests
// are kept in a queue. We add the logic to check the ReplicaManager queue at the end of KafkaApis.handle() and the
// expiration thread for certain delayed operations (e.g. DelayedJoin)
replicaManager.tryCompleteActions()
// The local completion time may be set while processing the request. Only record it if it's unset.
if (request.apiLocalCompleteTimeNanos < 0)
request.apiLocalCompleteTimeNanos = time.nanoseconds
}
}
def handleLeaderAndIsrRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldNeverReceive(request))
// ensureTopicExists is only for client facing requests
// We can't have the ensureTopicExists check here since the controller sends it as an advisory to all brokers so they
// stop serving data to clients for the topic being deleted
val correlationId = request.header.correlationId
val leaderAndIsrRequest = request.body[LeaderAndIsrRequest]
authHelper.authorizeClusterOperation(request, CLUSTER_ACTION)
if (isBrokerEpochStale(zkSupport, leaderAndIsrRequest.brokerEpoch)) {
// When the broker restarts very quickly, it is possible for this broker to receive request intended
// for its previous generation so the broker should skip the stale request.
info("Received LeaderAndIsr request with broker epoch " +
s"${leaderAndIsrRequest.brokerEpoch} smaller than the current broker epoch ${zkSupport.controller.brokerEpoch}")
requestHelper.sendResponseExemptThrottle(request, leaderAndIsrRequest.getErrorResponse(0, Errors.STALE_BROKER_EPOCH.exception))
} else {
val response = replicaManager.becomeLeaderOrFollower(correlationId, leaderAndIsrRequest,
RequestHandlerHelper.onLeadershipChange(groupCoordinator, txnCoordinator, _, _))
requestHelper.sendResponseExemptThrottle(request, response)
}
}
def handleStopReplicaRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldNeverReceive(request))
// ensureTopicExists is only for client facing requests
// We can't have the ensureTopicExists check here since the controller sends it as an advisory to all brokers so they
// stop serving data to clients for the topic being deleted
val stopReplicaRequest = request.body[StopReplicaRequest]
authHelper.authorizeClusterOperation(request, CLUSTER_ACTION)
if (isBrokerEpochStale(zkSupport, stopReplicaRequest.brokerEpoch)) {
// When the broker restarts very quickly, it is possible for this broker to receive request intended
// for its previous generation so the broker should skip the stale request.
info("Received StopReplica request with broker epoch " +
s"${stopReplicaRequest.brokerEpoch} smaller than the current broker epoch ${zkSupport.controller.brokerEpoch}")
requestHelper.sendResponseExemptThrottle(request, new StopReplicaResponse(
new StopReplicaResponseData().setErrorCode(Errors.STALE_BROKER_EPOCH.code)))
} else {
val partitionStates = stopReplicaRequest.partitionStates().asScala
val (result, error) = replicaManager.stopReplicas(
request.context.correlationId,
stopReplicaRequest.controllerId,
stopReplicaRequest.controllerEpoch,
partitionStates)
// Clear the coordinator caches in case we were the leader. In the case of a reassignment, we
// cannot rely on the LeaderAndIsr API for this since it is only sent to active replicas.
result.forKeyValue { (topicPartition, error) =>
if (error == Errors.NONE) {
val partitionState = partitionStates(topicPartition)
if (topicPartition.topic == GROUP_METADATA_TOPIC_NAME
&& partitionState.deletePartition) {
val leaderEpoch = if (partitionState.leaderEpoch >= 0)
Some(partitionState.leaderEpoch)
else
None
groupCoordinator.onResignation(topicPartition.partition, leaderEpoch)
} else if (topicPartition.topic == TRANSACTION_STATE_TOPIC_NAME
&& partitionState.deletePartition) {
val leaderEpoch = if (partitionState.leaderEpoch >= 0)
Some(partitionState.leaderEpoch)
else
None
txnCoordinator.onResignation(topicPartition.partition, coordinatorEpoch = leaderEpoch)
}
}
}
def toStopReplicaPartition(tp: TopicPartition, error: Errors) =
new StopReplicaResponseData.StopReplicaPartitionError()
.setTopicName(tp.topic)
.setPartitionIndex(tp.partition)
.setErrorCode(error.code)
requestHelper.sendResponseExemptThrottle(request, new StopReplicaResponse(new StopReplicaResponseData()
.setErrorCode(error.code)
.setPartitionErrors(result.map {
case (tp, error) => toStopReplicaPartition(tp, error)
}.toBuffer.asJava)))
}
CoreUtils.swallow(replicaManager.replicaFetcherManager.shutdownIdleFetcherThreads(), this)
}
def handleUpdateMetadataRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldNeverReceive(request))
val correlationId = request.header.correlationId
val updateMetadataRequest = request.body[UpdateMetadataRequest]
authHelper.authorizeClusterOperation(request, CLUSTER_ACTION)
if (isBrokerEpochStale(zkSupport, updateMetadataRequest.brokerEpoch)) {
// When the broker restarts very quickly, it is possible for this broker to receive request intended
// for its previous generation so the broker should skip the stale request.
info("Received update metadata request with broker epoch " +
s"${updateMetadataRequest.brokerEpoch} smaller than the current broker epoch ${zkSupport.controller.brokerEpoch}")
requestHelper.sendResponseExemptThrottle(request,
new UpdateMetadataResponse(new UpdateMetadataResponseData().setErrorCode(Errors.STALE_BROKER_EPOCH.code)))
} else {
val deletedPartitions = replicaManager.maybeUpdateMetadataCache(correlationId, updateMetadataRequest)
if (deletedPartitions.nonEmpty)
groupCoordinator.handleDeletedPartitions(deletedPartitions, requestLocal)
if (zkSupport.adminManager.hasDelayedTopicOperations) {
updateMetadataRequest.partitionStates.forEach { partitionState =>
zkSupport.adminManager.tryCompleteDelayedTopicOperations(partitionState.topicName)
}
}
quotas.clientQuotaCallback.foreach { callback =>
if (callback.updateClusterMetadata(metadataCache.getClusterMetadata(clusterId, request.context.listenerName))) {
quotas.fetch.updateQuotaMetricConfigs()
quotas.produce.updateQuotaMetricConfigs()
quotas.request.updateQuotaMetricConfigs()
quotas.controllerMutation.updateQuotaMetricConfigs()
}
}
if (replicaManager.hasDelayedElectionOperations) {
updateMetadataRequest.partitionStates.forEach { partitionState =>
val tp = new TopicPartition(partitionState.topicName, partitionState.partitionIndex)
replicaManager.tryCompleteElection(TopicPartitionOperationKey(tp))
}
}
requestHelper.sendResponseExemptThrottle(request, new UpdateMetadataResponse(
new UpdateMetadataResponseData().setErrorCode(Errors.NONE.code)))
}
}
def handleControlledShutdownRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldNeverReceive(request))
// ensureTopicExists is only for client facing requests
// We can't have the ensureTopicExists check here since the controller sends it as an advisory to all brokers so they
// stop serving data to clients for the topic being deleted
val controlledShutdownRequest = request.body[ControlledShutdownRequest]
authHelper.authorizeClusterOperation(request, CLUSTER_ACTION)
def controlledShutdownCallback(controlledShutdownResult: Try[Set[TopicPartition]]): Unit = {
val response = controlledShutdownResult match {
case Success(partitionsRemaining) =>
ControlledShutdownResponse.prepareResponse(Errors.NONE, partitionsRemaining.asJava)
case Failure(throwable) =>
controlledShutdownRequest.getErrorResponse(throwable)
}
requestHelper.sendResponseExemptThrottle(request, response)
}
zkSupport.controller.controlledShutdown(controlledShutdownRequest.data.brokerId, controlledShutdownRequest.data.brokerEpoch, controlledShutdownCallback)
}
/**
* Handle an offset commit request
*/
def handleOffsetCommitRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val header = request.header
val offsetCommitRequest = request.body[OffsetCommitRequest]
val unauthorizedTopicErrors = mutable.Map[TopicPartition, Errors]()
val nonExistingTopicErrors = mutable.Map[TopicPartition, Errors]()
// the callback for sending an offset commit response
def sendResponseCallback(commitStatus: Map[TopicPartition, Errors]): Unit = {
val combinedCommitStatus = commitStatus ++ unauthorizedTopicErrors ++ nonExistingTopicErrors
if (isDebugEnabled)
combinedCommitStatus.forKeyValue { (topicPartition, error) =>
if (error != Errors.NONE) {
debug(s"Offset commit request with correlation id ${header.correlationId} from client ${header.clientId} " +
s"on partition $topicPartition failed due to ${error.exceptionName}")
}
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new OffsetCommitResponse(requestThrottleMs, combinedCommitStatus.asJava))
}
// reject the request if not authorized to the group
if (!authHelper.authorize(request.context, READ, GROUP, offsetCommitRequest.data.groupId)) {
val error = Errors.GROUP_AUTHORIZATION_FAILED
val responseTopicList = OffsetCommitRequest.getErrorResponseTopics(
offsetCommitRequest.data.topics,
error)
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => new OffsetCommitResponse(
new OffsetCommitResponseData()
.setTopics(responseTopicList)
.setThrottleTimeMs(requestThrottleMs)
))
} else if (offsetCommitRequest.data.groupInstanceId != null && config.interBrokerProtocolVersion.isLessThan(IBP_2_3_IV0)) {
// Only enable static membership when IBP >= 2.3, because it is not safe for the broker to use the static member logic
// until we are sure that all brokers support it. If static group being loaded by an older coordinator, it will discard
// the group.instance.id field, so static members could accidentally become "dynamic", which leads to wrong states.
val errorMap = new mutable.HashMap[TopicPartition, Errors]
for (topicData <- offsetCommitRequest.data.topics.asScala) {
for (partitionData <- topicData.partitions.asScala) {
val topicPartition = new TopicPartition(topicData.name, partitionData.partitionIndex)
errorMap += topicPartition -> Errors.UNSUPPORTED_VERSION
}
}
sendResponseCallback(errorMap.toMap)
} else {
val authorizedTopicRequestInfoBldr = immutable.Map.newBuilder[TopicPartition, OffsetCommitRequestData.OffsetCommitRequestPartition]
val topics = offsetCommitRequest.data.topics.asScala
val authorizedTopics = authHelper.filterByAuthorized(request.context, READ, TOPIC, topics)(_.name)
for (topicData <- topics) {
for (partitionData <- topicData.partitions.asScala) {
val topicPartition = new TopicPartition(topicData.name, partitionData.partitionIndex)
if (!authorizedTopics.contains(topicData.name))
unauthorizedTopicErrors += (topicPartition -> Errors.TOPIC_AUTHORIZATION_FAILED)
else if (!metadataCache.contains(topicPartition))
nonExistingTopicErrors += (topicPartition -> Errors.UNKNOWN_TOPIC_OR_PARTITION)
else
authorizedTopicRequestInfoBldr += (topicPartition -> partitionData)
}
}
val authorizedTopicRequestInfo = authorizedTopicRequestInfoBldr.result()
if (authorizedTopicRequestInfo.isEmpty)
sendResponseCallback(Map.empty)
else if (header.apiVersion == 0) {
// for version 0 always store offsets to ZK
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.unsupported("Version 0 offset commit requests"))
val responseInfo = authorizedTopicRequestInfo.map {
case (topicPartition, partitionData) =>
try {
if (partitionData.committedMetadata() != null
&& partitionData.committedMetadata().length > config.offsetMetadataMaxSize)
(topicPartition, Errors.OFFSET_METADATA_TOO_LARGE)
else {
zkSupport.zkClient.setOrCreateConsumerOffset(
offsetCommitRequest.data.groupId,
topicPartition,
partitionData.committedOffset)
(topicPartition, Errors.NONE)
}
} catch {
case e: Throwable => (topicPartition, Errors.forException(e))
}
}
sendResponseCallback(responseInfo)
} else {
// for version 1 and beyond store offsets in offset manager
// "default" expiration timestamp is now + retention (and retention may be overridden if v2)
// expire timestamp is computed differently for v1 and v2.
// - If v1 and no explicit commit timestamp is provided we treat it the same as v5.
// - If v1 and explicit retention time is provided we calculate expiration timestamp based on that
// - If v2/v3/v4 (no explicit commit timestamp) we treat it the same as v5.
// - For v5 and beyond there is no per partition expiration timestamp, so this field is no longer in effect
val currentTimestamp = time.milliseconds
val partitionData = authorizedTopicRequestInfo.map { case (k, partitionData) =>
val metadata = if (partitionData.committedMetadata == null)
OffsetAndMetadata.NoMetadata
else
partitionData.committedMetadata
val leaderEpochOpt = if (partitionData.committedLeaderEpoch == RecordBatch.NO_PARTITION_LEADER_EPOCH)
Optional.empty[Integer]
else
Optional.of[Integer](partitionData.committedLeaderEpoch)
k -> new OffsetAndMetadata(
offset = partitionData.committedOffset,
leaderEpoch = leaderEpochOpt,
metadata = metadata,
commitTimestamp = partitionData.commitTimestamp match {
case OffsetCommitRequest.DEFAULT_TIMESTAMP => currentTimestamp
case customTimestamp => customTimestamp
},
expireTimestamp = offsetCommitRequest.data.retentionTimeMs match {
case OffsetCommitRequest.DEFAULT_RETENTION_TIME => None
case retentionTime => Some(currentTimestamp + retentionTime)
}
)
}
// call coordinator to handle commit offset
groupCoordinator.handleCommitOffsets(
offsetCommitRequest.data.groupId,
offsetCommitRequest.data.memberId,
Option(offsetCommitRequest.data.groupInstanceId),
offsetCommitRequest.data.generationId,
partitionData,
sendResponseCallback,
requestLocal)
}
}
}
/**
* Handle a produce request
*/
def handleProduceRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val produceRequest = request.body[ProduceRequest]
val requestSize = request.sizeInBytes
if (RequestUtils.hasTransactionalRecords(produceRequest)) {
val isAuthorizedTransactional = produceRequest.transactionalId != null &&
authHelper.authorize(request.context, WRITE, TRANSACTIONAL_ID, produceRequest.transactionalId)
if (!isAuthorizedTransactional) {
requestHelper.sendErrorResponseMaybeThrottle(request, Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED.exception)
return
}
}
val unauthorizedTopicResponses = mutable.Map[TopicPartition, PartitionResponse]()
val nonExistingTopicResponses = mutable.Map[TopicPartition, PartitionResponse]()
val invalidRequestResponses = mutable.Map[TopicPartition, PartitionResponse]()
val authorizedRequestInfo = mutable.Map[TopicPartition, MemoryRecords]()
// cache the result to avoid redundant authorization calls
val authorizedTopics = authHelper.filterByAuthorized(request.context, WRITE, TOPIC,
produceRequest.data().topicData().asScala)(_.name())
produceRequest.data.topicData.forEach(topic => topic.partitionData.forEach { partition =>
val topicPartition = new TopicPartition(topic.name, partition.index)
// This caller assumes the type is MemoryRecords and that is true on current serialization
// We cast the type to avoid causing big change to code base.
// https://issues.apache.org/jira/browse/KAFKA-10698
val memoryRecords = partition.records.asInstanceOf[MemoryRecords]
if (!authorizedTopics.contains(topicPartition.topic))
unauthorizedTopicResponses += topicPartition -> new PartitionResponse(Errors.TOPIC_AUTHORIZATION_FAILED)
else if (!metadataCache.contains(topicPartition))
nonExistingTopicResponses += topicPartition -> new PartitionResponse(Errors.UNKNOWN_TOPIC_OR_PARTITION)
else
try {
ProduceRequest.validateRecords(request.header.apiVersion, memoryRecords)
authorizedRequestInfo += (topicPartition -> memoryRecords)
} catch {
case e: ApiException =>
invalidRequestResponses += topicPartition -> new PartitionResponse(Errors.forException(e))
}
})
// the callback for sending a produce response
// The construction of ProduceResponse is able to accept auto-generated protocol data so
// KafkaApis#handleProduceRequest should apply auto-generated protocol to avoid extra conversion.
// https://issues.apache.org/jira/browse/KAFKA-10730
@nowarn("cat=deprecation")
def sendResponseCallback(responseStatus: Map[TopicPartition, PartitionResponse]): Unit = {
val mergedResponseStatus = responseStatus ++ unauthorizedTopicResponses ++ nonExistingTopicResponses ++ invalidRequestResponses
var errorInResponse = false
mergedResponseStatus.forKeyValue { (topicPartition, status) =>
if (status.error != Errors.NONE) {
errorInResponse = true
debug("Produce request with correlation id %d from client %s on partition %s failed due to %s".format(
request.header.correlationId,
request.header.clientId,
topicPartition,
status.error.exceptionName))
}
}
// Record both bandwidth and request quota-specific values and throttle by muting the channel if any of the quotas
// have been violated. If both quotas have been violated, use the max throttle time between the two quotas. Note
// that the request quota is not enforced if acks == 0.
val timeMs = time.milliseconds()
val bandwidthThrottleTimeMs = quotas.produce.maybeRecordAndGetThrottleTimeMs(request, requestSize, timeMs)
val requestThrottleTimeMs =
if (produceRequest.acks == 0) 0
else quotas.request.maybeRecordAndGetThrottleTimeMs(request, timeMs)
val maxThrottleTimeMs = Math.max(bandwidthThrottleTimeMs, requestThrottleTimeMs)
if (maxThrottleTimeMs > 0) {
request.apiThrottleTimeMs = maxThrottleTimeMs
if (bandwidthThrottleTimeMs > requestThrottleTimeMs) {
requestHelper.throttle(quotas.produce, request, bandwidthThrottleTimeMs)
} else {
requestHelper.throttle(quotas.request, request, requestThrottleTimeMs)
}
}
// Send the response immediately. In case of throttling, the channel has already been muted.
if (produceRequest.acks == 0) {
// no operation needed if producer request.required.acks = 0; however, if there is any error in handling
// the request, since no response is expected by the producer, the server will close socket server so that
// the producer client will know that some error has happened and will refresh its metadata
if (errorInResponse) {
val exceptionsSummary = mergedResponseStatus.map { case (topicPartition, status) =>
topicPartition -> status.error.exceptionName
}.mkString(", ")
info(
s"Closing connection due to error during produce request with correlation id ${request.header.correlationId} " +
s"from client id ${request.header.clientId} with ack=0\n" +
s"Topic and partition to exceptions: $exceptionsSummary"
)
requestChannel.closeConnection(request, new ProduceResponse(mergedResponseStatus.asJava).errorCounts)
} else {
// Note that although request throttling is exempt for acks == 0, the channel may be throttled due to
// bandwidth quota violation.
requestHelper.sendNoOpResponseExemptThrottle(request)
}
} else {
requestChannel.sendResponse(request, new ProduceResponse(mergedResponseStatus.asJava, maxThrottleTimeMs), None)
}
}
def processingStatsCallback(processingStats: FetchResponseStats): Unit = {
processingStats.forKeyValue { (tp, info) =>
updateRecordConversionStats(request, tp, info)
}
}
if (authorizedRequestInfo.isEmpty)
sendResponseCallback(Map.empty)
else {
val internalTopicsAllowed = request.header.clientId == AdminUtils.AdminClientId
// call the replica manager to append messages to the replicas
replicaManager.appendRecords(
timeout = produceRequest.timeout.toLong,
requiredAcks = produceRequest.acks,
internalTopicsAllowed = internalTopicsAllowed,
origin = AppendOrigin.Client,
entriesPerPartition = authorizedRequestInfo,
requestLocal = requestLocal,
responseCallback = sendResponseCallback,
recordConversionStatsCallback = processingStatsCallback)
// if the request is put into the purgatory, it will have a held reference and hence cannot be garbage collected;
// hence we clear its data here in order to let GC reclaim its memory since it is already appended to log
produceRequest.clearPartitionRecords()
}
}
/**
* Handle a fetch request
*/
def handleFetchRequest(request: RequestChannel.Request): Unit = {
val versionId = request.header.apiVersion
val clientId = request.header.clientId
val fetchRequest = request.body[FetchRequest]
val topicNames =
if (fetchRequest.version() >= 13)
metadataCache.topicIdsToNames()
else
Collections.emptyMap[Uuid, String]()
val fetchData = fetchRequest.fetchData(topicNames)
val forgottenTopics = fetchRequest.forgottenTopics(topicNames)
val fetchContext = fetchManager.newContext(
fetchRequest.version,
fetchRequest.metadata,
fetchRequest.isFromFollower,
fetchData,
forgottenTopics,
topicNames)
val erroneous = mutable.ArrayBuffer[(TopicIdPartition, FetchResponseData.PartitionData)]()
val interesting = mutable.ArrayBuffer[(TopicIdPartition, FetchRequest.PartitionData)]()
if (fetchRequest.isFromFollower) {
// The follower must have ClusterAction on ClusterResource in order to fetch partition data.
if (authHelper.authorize(request.context, CLUSTER_ACTION, CLUSTER, CLUSTER_NAME)) {
fetchContext.foreachPartition { (topicIdPartition, data) =>
if (topicIdPartition.topic == null)
erroneous += topicIdPartition -> FetchResponse.partitionResponse(topicIdPartition, Errors.UNKNOWN_TOPIC_ID)
else if (!metadataCache.contains(topicIdPartition.topicPartition))
erroneous += topicIdPartition -> FetchResponse.partitionResponse(topicIdPartition, Errors.UNKNOWN_TOPIC_OR_PARTITION)
else
interesting += topicIdPartition -> data
}
} else {
fetchContext.foreachPartition { (topicIdPartition, _) =>
erroneous += topicIdPartition -> FetchResponse.partitionResponse(topicIdPartition, Errors.TOPIC_AUTHORIZATION_FAILED)
}
}
} else {
// Regular Kafka consumers need READ permission on each partition they are fetching.
val partitionDatas = new mutable.ArrayBuffer[(TopicIdPartition, FetchRequest.PartitionData)]
fetchContext.foreachPartition { (topicIdPartition, partitionData) =>
if (topicIdPartition.topic == null)
erroneous += topicIdPartition -> FetchResponse.partitionResponse(topicIdPartition, Errors.UNKNOWN_TOPIC_ID)
else
partitionDatas += topicIdPartition -> partitionData
}
val authorizedTopics = authHelper.filterByAuthorized(request.context, READ, TOPIC, partitionDatas)(_._1.topicPartition.topic)
partitionDatas.foreach { case (topicIdPartition, data) =>
if (!authorizedTopics.contains(topicIdPartition.topic))
erroneous += topicIdPartition -> FetchResponse.partitionResponse(topicIdPartition, Errors.TOPIC_AUTHORIZATION_FAILED)
else if (!metadataCache.contains(topicIdPartition.topicPartition))
erroneous += topicIdPartition -> FetchResponse.partitionResponse(topicIdPartition, Errors.UNKNOWN_TOPIC_OR_PARTITION)
else
interesting += topicIdPartition -> data
}
}
def maybeDownConvertStorageError(error: Errors): Errors = {
// If consumer sends FetchRequest V5 or earlier, the client library is not guaranteed to recognize the error code
// for KafkaStorageException. In this case the client library will translate KafkaStorageException to
// UnknownServerException which is not retriable. We can ensure that consumer will update metadata and retry
// by converting the KafkaStorageException to NotLeaderOrFollowerException in the response if FetchRequest version <= 5
if (error == Errors.KAFKA_STORAGE_ERROR && versionId <= 5) {
Errors.NOT_LEADER_OR_FOLLOWER
} else {
error
}
}
def maybeConvertFetchedData(tp: TopicIdPartition,
partitionData: FetchResponseData.PartitionData): FetchResponseData.PartitionData = {
// We will never return a logConfig when the topic is unresolved and the name is null. This is ok since we won't have any records to convert.
val logConfig = replicaManager.getLogConfig(tp.topicPartition)
if (logConfig.exists(_.compressionType == ZStdCompressionCodec.name) && versionId < 10) {
trace(s"Fetching messages is disabled for ZStandard compressed partition $tp. Sending unsupported version response to $clientId.")
FetchResponse.partitionResponse(tp, Errors.UNSUPPORTED_COMPRESSION_TYPE)
} else {
// Down-conversion of fetched records is needed when the on-disk magic value is greater than what is
// supported by the fetch request version.
// If the inter-broker protocol version is `3.0` or higher, the log config message format version is
// always `3.0` (i.e. magic value is `v2`). As a result, we always go through the down-conversion
// path if the fetch version is 3 or lower (in rare cases the down-conversion may not be needed, but
// it's not worth optimizing for them).
// If the inter-broker protocol version is lower than `3.0`, we rely on the log config message format
// version as a proxy for the on-disk magic value to maintain the long-standing behavior originally
// introduced in Kafka 0.10.0. An important implication is that it's unsafe to downgrade the message
// format version after a single message has been produced (the broker would return the message(s)
// without down-conversion irrespective of the fetch version).
val unconvertedRecords = FetchResponse.recordsOrFail(partitionData)
val downConvertMagic =
logConfig.map(_.recordVersion.value).flatMap { magic =>
if (magic > RecordBatch.MAGIC_VALUE_V0 && versionId <= 1)
Some(RecordBatch.MAGIC_VALUE_V0)
else if (magic > RecordBatch.MAGIC_VALUE_V1 && versionId <= 3)
Some(RecordBatch.MAGIC_VALUE_V1)
else
None
}
downConvertMagic match {
case Some(magic) =>
// For fetch requests from clients, check if down-conversion is disabled for the particular partition
if (!fetchRequest.isFromFollower && !logConfig.forall(_.messageDownConversionEnable)) {
trace(s"Conversion to message format ${downConvertMagic.get} is disabled for partition $tp. Sending unsupported version response to $clientId.")
FetchResponse.partitionResponse(tp, Errors.UNSUPPORTED_VERSION)
} else {
try {
trace(s"Down converting records from partition $tp to message format version $magic for fetch request from $clientId")
// Because down-conversion is extremely memory intensive, we want to try and delay the down-conversion as much
// as possible. With KIP-283, we have the ability to lazily down-convert in a chunked manner. The lazy, chunked
// down-conversion always guarantees that at least one batch of messages is down-converted and sent out to the
// client.
new FetchResponseData.PartitionData()
.setPartitionIndex(tp.partition)
.setErrorCode(maybeDownConvertStorageError(Errors.forCode(partitionData.errorCode)).code)
.setHighWatermark(partitionData.highWatermark)
.setLastStableOffset(partitionData.lastStableOffset)
.setLogStartOffset(partitionData.logStartOffset)
.setAbortedTransactions(partitionData.abortedTransactions)
.setRecords(new LazyDownConversionRecords(tp.topicPartition, unconvertedRecords, magic, fetchContext.getFetchOffset(tp).get, time))
.setPreferredReadReplica(partitionData.preferredReadReplica())
} catch {
case e: UnsupportedCompressionTypeException =>
trace("Received unsupported compression type error during down-conversion", e)
FetchResponse.partitionResponse(tp, Errors.UNSUPPORTED_COMPRESSION_TYPE)
}
}
case None =>
new FetchResponseData.PartitionData()
.setPartitionIndex(tp.partition)
.setErrorCode(maybeDownConvertStorageError(Errors.forCode(partitionData.errorCode)).code)
.setHighWatermark(partitionData.highWatermark)
.setLastStableOffset(partitionData.lastStableOffset)
.setLogStartOffset(partitionData.logStartOffset)
.setAbortedTransactions(partitionData.abortedTransactions)
.setRecords(unconvertedRecords)
.setPreferredReadReplica(partitionData.preferredReadReplica)
.setDivergingEpoch(partitionData.divergingEpoch)
}
}
}
// the callback for process a fetch response, invoked before throttling
def processResponseCallback(responsePartitionData: Seq[(TopicIdPartition, FetchPartitionData)]): Unit = {
val partitions = new util.LinkedHashMap[TopicIdPartition, FetchResponseData.PartitionData]
val reassigningPartitions = mutable.Set[TopicIdPartition]()
responsePartitionData.foreach { case (tp, data) =>
val abortedTransactions = data.abortedTransactions.map(_.asJava).orNull
val lastStableOffset = data.lastStableOffset.getOrElse(FetchResponse.INVALID_LAST_STABLE_OFFSET)
if (data.isReassignmentFetch) reassigningPartitions.add(tp)
val partitionData = new FetchResponseData.PartitionData()
.setPartitionIndex(tp.partition)
.setErrorCode(maybeDownConvertStorageError(data.error).code)
.setHighWatermark(data.highWatermark)
.setLastStableOffset(lastStableOffset)
.setLogStartOffset(data.logStartOffset)
.setAbortedTransactions(abortedTransactions)
.setRecords(data.records)
.setPreferredReadReplica(data.preferredReadReplica.getOrElse(FetchResponse.INVALID_PREFERRED_REPLICA_ID))
data.divergingEpoch.foreach(partitionData.setDivergingEpoch)
partitions.put(tp, partitionData)
}
erroneous.foreach { case (tp, data) => partitions.put(tp, data) }
var unconvertedFetchResponse: FetchResponse = null
def createResponse(throttleTimeMs: Int): FetchResponse = {
// Down-convert messages for each partition if required
val convertedData = new util.LinkedHashMap[TopicIdPartition, FetchResponseData.PartitionData]
unconvertedFetchResponse.data().responses().forEach { topicResponse =>
topicResponse.partitions().forEach { unconvertedPartitionData =>
val tp = new TopicIdPartition(topicResponse.topicId, new TopicPartition(topicResponse.topic, unconvertedPartitionData.partitionIndex()))
val error = Errors.forCode(unconvertedPartitionData.errorCode)
if (error != Errors.NONE)
debug(s"Fetch request with correlation id ${request.header.correlationId} from client $clientId " +
s"on partition $tp failed due to ${error.exceptionName}")
convertedData.put(tp, maybeConvertFetchedData(tp, unconvertedPartitionData))
}
}
// Prepare fetch response from converted data
val response =
FetchResponse.of(unconvertedFetchResponse.error, throttleTimeMs, unconvertedFetchResponse.sessionId, convertedData)
// record the bytes out metrics only when the response is being sent
response.data.responses.forEach { topicResponse =>
topicResponse.partitions.forEach { data =>
// If the topic name was not known, we will have no bytes out.
if (topicResponse.topic != null) {
val tp = new TopicIdPartition(topicResponse.topicId, new TopicPartition(topicResponse.topic, data.partitionIndex))
brokerTopicStats.updateBytesOut(tp.topic, fetchRequest.isFromFollower, reassigningPartitions.contains(tp), FetchResponse.recordsSize(data))
}
}
}
response
}
def updateConversionStats(send: Send): Unit = {
send match {
case send: MultiRecordsSend if send.recordConversionStats != null =>
send.recordConversionStats.asScala.toMap.foreach {
case (tp, stats) => updateRecordConversionStats(request, tp, stats)
}
case _ =>
}
}
if (fetchRequest.isFromFollower) {
// We've already evaluated against the quota and are good to go. Just need to record it now.
unconvertedFetchResponse = fetchContext.updateAndGenerateResponseData(partitions)
val responseSize = KafkaApis.sizeOfThrottledPartitions(versionId, unconvertedFetchResponse, quotas.leader)
quotas.leader.record(responseSize)
val responsePartitionsSize = unconvertedFetchResponse.data().responses().stream().mapToInt(_.partitions().size()).sum()
trace(s"Sending Fetch response with partitions.size=$responsePartitionsSize, " +
s"metadata=${unconvertedFetchResponse.sessionId}")
requestHelper.sendResponseExemptThrottle(request, createResponse(0), Some(updateConversionStats))
} else {
// Fetch size used to determine throttle time is calculated before any down conversions.
// This may be slightly different from the actual response size. But since down conversions
// result in data being loaded into memory, we should do this only when we are not going to throttle.
//
// Record both bandwidth and request quota-specific values and throttle by muting the channel if any of the
// quotas have been violated. If both quotas have been violated, use the max throttle time between the two
// quotas. When throttled, we unrecord the recorded bandwidth quota value
val responseSize = fetchContext.getResponseSize(partitions, versionId)
val timeMs = time.milliseconds()
val requestThrottleTimeMs = quotas.request.maybeRecordAndGetThrottleTimeMs(request, timeMs)
val bandwidthThrottleTimeMs = quotas.fetch.maybeRecordAndGetThrottleTimeMs(request, responseSize, timeMs)
val maxThrottleTimeMs = math.max(bandwidthThrottleTimeMs, requestThrottleTimeMs)
if (maxThrottleTimeMs > 0) {
request.apiThrottleTimeMs = maxThrottleTimeMs
// Even if we need to throttle for request quota violation, we should "unrecord" the already recorded value
// from the fetch quota because we are going to return an empty response.
quotas.fetch.unrecordQuotaSensor(request, responseSize, timeMs)
if (bandwidthThrottleTimeMs > requestThrottleTimeMs) {
requestHelper.throttle(quotas.fetch, request, bandwidthThrottleTimeMs)
} else {
requestHelper.throttle(quotas.request, request, requestThrottleTimeMs)
}
// If throttling is required, return an empty response.
unconvertedFetchResponse = fetchContext.getThrottledResponse(maxThrottleTimeMs)
} else {
// Get the actual response. This will update the fetch context.
unconvertedFetchResponse = fetchContext.updateAndGenerateResponseData(partitions)
val responsePartitionsSize = unconvertedFetchResponse.data().responses().stream().mapToInt(_.partitions().size()).sum()
trace(s"Sending Fetch response with partitions.size=$responsePartitionsSize, " +
s"metadata=${unconvertedFetchResponse.sessionId}")
}
// Send the response immediately.
requestChannel.sendResponse(request, createResponse(maxThrottleTimeMs), Some(updateConversionStats))
}
}
if (interesting.isEmpty) {
processResponseCallback(Seq.empty)
} else {
// for fetch from consumer, cap fetchMaxBytes to the maximum bytes that could be fetched without being throttled given
// no bytes were recorded in the recent quota window
// trying to fetch more bytes would result in a guaranteed throttling potentially blocking consumer progress
val maxQuotaWindowBytes = if (fetchRequest.isFromFollower)
Int.MaxValue
else
quotas.fetch.getMaxValueInQuotaWindow(request.session, clientId).toInt
val fetchMaxBytes = Math.min(Math.min(fetchRequest.maxBytes, config.fetchMaxBytes), maxQuotaWindowBytes)
val fetchMinBytes = Math.min(fetchRequest.minBytes, fetchMaxBytes)
val clientMetadata: Option[ClientMetadata] = if (versionId >= 11) {
// Fetch API version 11 added preferred replica logic
Some(new DefaultClientMetadata(
fetchRequest.rackId,
clientId,
request.context.clientAddress,
request.context.principal,
request.context.listenerName.value))
} else {
None
}
val params = FetchParams(
requestVersion = versionId,
replicaId = fetchRequest.replicaId,
maxWaitMs = fetchRequest.maxWait,
minBytes = fetchMinBytes,
maxBytes = fetchMaxBytes,
isolation = FetchIsolation(fetchRequest),
clientMetadata = clientMetadata
)
// call the replica manager to fetch messages from the local replica
replicaManager.fetchMessages(
params = params,
fetchInfos = interesting,
quota = replicationQuota(fetchRequest),
responseCallback = processResponseCallback,
)
}
}
def replicationQuota(fetchRequest: FetchRequest): ReplicaQuota =
if (fetchRequest.isFromFollower) quotas.leader else UnboundedQuota
def handleListOffsetRequest(request: RequestChannel.Request): Unit = {
val version = request.header.apiVersion
val topics = if (version == 0)
handleListOffsetRequestV0(request)
else
handleListOffsetRequestV1AndAbove(request)
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => new ListOffsetsResponse(new ListOffsetsResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setTopics(topics.asJava)))
}
private def handleListOffsetRequestV0(request : RequestChannel.Request) : List[ListOffsetsTopicResponse] = {
val correlationId = request.header.correlationId
val clientId = request.header.clientId
val offsetRequest = request.body[ListOffsetsRequest]
val (authorizedRequestInfo, unauthorizedRequestInfo) = authHelper.partitionSeqByAuthorized(request.context,
DESCRIBE, TOPIC, offsetRequest.topics.asScala.toSeq)(_.name)
val unauthorizedResponseStatus = unauthorizedRequestInfo.map(topic =>
new ListOffsetsTopicResponse()
.setName(topic.name)
.setPartitions(topic.partitions.asScala.map(partition =>
new ListOffsetsPartitionResponse()
.setPartitionIndex(partition.partitionIndex)
.setErrorCode(Errors.TOPIC_AUTHORIZATION_FAILED.code)).asJava)
)
val responseTopics = authorizedRequestInfo.map { topic =>
val responsePartitions = topic.partitions.asScala.map { partition =>
val topicPartition = new TopicPartition(topic.name, partition.partitionIndex)
try {
val offsets = replicaManager.legacyFetchOffsetsForTimestamp(
topicPartition = topicPartition,
timestamp = partition.timestamp,
maxNumOffsets = partition.maxNumOffsets,
isFromConsumer = offsetRequest.replicaId == ListOffsetsRequest.CONSUMER_REPLICA_ID,
fetchOnlyFromLeader = offsetRequest.replicaId != ListOffsetsRequest.DEBUGGING_REPLICA_ID)
new ListOffsetsPartitionResponse()
.setPartitionIndex(partition.partitionIndex)
.setErrorCode(Errors.NONE.code)
.setOldStyleOffsets(offsets.map(JLong.valueOf).asJava)
} catch {
// NOTE: UnknownTopicOrPartitionException and NotLeaderOrFollowerException are special cases since these error messages
// are typically transient and there is no value in logging the entire stack trace for the same
case e @ (_ : UnknownTopicOrPartitionException |
_ : NotLeaderOrFollowerException |
_ : KafkaStorageException) =>
debug("Offset request with correlation id %d from client %s on partition %s failed due to %s".format(
correlationId, clientId, topicPartition, e.getMessage))
new ListOffsetsPartitionResponse()
.setPartitionIndex(partition.partitionIndex)
.setErrorCode(Errors.forException(e).code)
case e: Throwable =>
error("Error while responding to offset request", e)
new ListOffsetsPartitionResponse()
.setPartitionIndex(partition.partitionIndex)
.setErrorCode(Errors.forException(e).code)
}
}
new ListOffsetsTopicResponse().setName(topic.name).setPartitions(responsePartitions.asJava)
}
(responseTopics ++ unauthorizedResponseStatus).toList
}
private def handleListOffsetRequestV1AndAbove(request : RequestChannel.Request): List[ListOffsetsTopicResponse] = {
val correlationId = request.header.correlationId
val clientId = request.header.clientId
val offsetRequest = request.body[ListOffsetsRequest]
val version = request.header.apiVersion
def buildErrorResponse(e: Errors, partition: ListOffsetsPartition): ListOffsetsPartitionResponse = {
new ListOffsetsPartitionResponse()
.setPartitionIndex(partition.partitionIndex)
.setErrorCode(e.code)
.setTimestamp(ListOffsetsResponse.UNKNOWN_TIMESTAMP)
.setOffset(ListOffsetsResponse.UNKNOWN_OFFSET)
}
val (authorizedRequestInfo, unauthorizedRequestInfo) = authHelper.partitionSeqByAuthorized(request.context,
DESCRIBE, TOPIC, offsetRequest.topics.asScala.toSeq)(_.name)
val unauthorizedResponseStatus = unauthorizedRequestInfo.map(topic =>
new ListOffsetsTopicResponse()
.setName(topic.name)
.setPartitions(topic.partitions.asScala.map(partition =>
buildErrorResponse(Errors.TOPIC_AUTHORIZATION_FAILED, partition)).asJava)
)
val responseTopics = authorizedRequestInfo.map { topic =>
val responsePartitions = topic.partitions.asScala.map { partition =>
val topicPartition = new TopicPartition(topic.name, partition.partitionIndex)
if (offsetRequest.duplicatePartitions.contains(topicPartition)) {
debug(s"OffsetRequest with correlation id $correlationId from client $clientId on partition $topicPartition " +
s"failed because the partition is duplicated in the request.")
buildErrorResponse(Errors.INVALID_REQUEST, partition)
} else {
try {
val fetchOnlyFromLeader = offsetRequest.replicaId != ListOffsetsRequest.DEBUGGING_REPLICA_ID
val isClientRequest = offsetRequest.replicaId == ListOffsetsRequest.CONSUMER_REPLICA_ID
val isolationLevelOpt = if (isClientRequest)
Some(offsetRequest.isolationLevel)
else
None
val foundOpt = replicaManager.fetchOffsetForTimestamp(topicPartition,
partition.timestamp,
isolationLevelOpt,
if (partition.currentLeaderEpoch == ListOffsetsResponse.UNKNOWN_EPOCH) Optional.empty() else Optional.of(partition.currentLeaderEpoch),
fetchOnlyFromLeader)
val response = foundOpt match {
case Some(found) =>
val partitionResponse = new ListOffsetsPartitionResponse()
.setPartitionIndex(partition.partitionIndex)
.setErrorCode(Errors.NONE.code)
.setTimestamp(found.timestamp)
.setOffset(found.offset)
if (found.leaderEpoch.isPresent && version >= 4)
partitionResponse.setLeaderEpoch(found.leaderEpoch.get)
partitionResponse
case None =>
buildErrorResponse(Errors.NONE, partition)
}
response
} catch {
// NOTE: These exceptions are special cases since these error messages are typically transient or the client
// would have received a clear exception and there is no value in logging the entire stack trace for the same
case e @ (_ : UnknownTopicOrPartitionException |
_ : NotLeaderOrFollowerException |
_ : UnknownLeaderEpochException |
_ : FencedLeaderEpochException |
_ : KafkaStorageException |
_ : UnsupportedForMessageFormatException) =>
debug(s"Offset request with correlation id $correlationId from client $clientId on " +
s"partition $topicPartition failed due to ${e.getMessage}")
buildErrorResponse(Errors.forException(e), partition)
// Only V5 and newer ListOffset calls should get OFFSET_NOT_AVAILABLE
case e: OffsetNotAvailableException =>
if (request.header.apiVersion >= 5) {
buildErrorResponse(Errors.forException(e), partition)
} else {
buildErrorResponse(Errors.LEADER_NOT_AVAILABLE, partition)
}
case e: Throwable =>
error("Error while responding to offset request", e)
buildErrorResponse(Errors.forException(e), partition)
}
}
}
new ListOffsetsTopicResponse().setName(topic.name).setPartitions(responsePartitions.asJava)
}
(responseTopics ++ unauthorizedResponseStatus).toList
}
private def metadataResponseTopic(error: Errors,
topic: String,
topicId: Uuid,
isInternal: Boolean,
partitionData: util.List[MetadataResponsePartition]): MetadataResponseTopic = {
new MetadataResponseTopic()
.setErrorCode(error.code)
.setName(topic)
.setTopicId(topicId)
.setIsInternal(isInternal)
.setPartitions(partitionData)
}
private def getTopicMetadata(
request: RequestChannel.Request,
fetchAllTopics: Boolean,
allowAutoTopicCreation: Boolean,
topics: Set[String],
listenerName: ListenerName,
errorUnavailableEndpoints: Boolean,
errorUnavailableListeners: Boolean
): Seq[MetadataResponseTopic] = {
val topicResponses = metadataCache.getTopicMetadata(topics, listenerName,
errorUnavailableEndpoints, errorUnavailableListeners)
if (topics.isEmpty || topicResponses.size == topics.size || fetchAllTopics) {
topicResponses
} else {
val nonExistingTopics = topics.diff(topicResponses.map(_.name).toSet)
val nonExistingTopicResponses = if (allowAutoTopicCreation) {
val controllerMutationQuota = quotas.controllerMutation.newPermissiveQuotaFor(request)
autoTopicCreationManager.createTopics(nonExistingTopics, controllerMutationQuota, Some(request.context))
} else {
nonExistingTopics.map { topic =>
val error = try {
Topic.validate(topic)
Errors.UNKNOWN_TOPIC_OR_PARTITION
} catch {
case _: InvalidTopicException =>
Errors.INVALID_TOPIC_EXCEPTION
}
metadataResponseTopic(
error,
topic,
metadataCache.getTopicId(topic),
Topic.isInternal(topic),
util.Collections.emptyList()
)
}
}
topicResponses ++ nonExistingTopicResponses
}
}
def handleTopicMetadataRequest(request: RequestChannel.Request): Unit = {
val metadataRequest = request.body[MetadataRequest]
val requestVersion = request.header.apiVersion
// Topic IDs are not supported for versions 10 and 11. Topic names can not be null in these versions.
if (!metadataRequest.isAllTopics) {
metadataRequest.data.topics.forEach{ topic =>
if (topic.name == null && metadataRequest.version < 12) {
throw new InvalidRequestException(s"Topic name can not be null for version ${metadataRequest.version}")
} else if (topic.topicId != Uuid.ZERO_UUID && metadataRequest.version < 12) {
throw new InvalidRequestException(s"Topic IDs are not supported in requests for version ${metadataRequest.version}")
}
}
}
// Check if topicId is presented firstly.
val topicIds = metadataRequest.topicIds.asScala.toSet.filterNot(_ == Uuid.ZERO_UUID)
val useTopicId = topicIds.nonEmpty
// Only get topicIds and topicNames when supporting topicId
val unknownTopicIds = topicIds.filter(metadataCache.getTopicName(_).isEmpty)
val knownTopicNames = topicIds.flatMap(metadataCache.getTopicName)
val unknownTopicIdsTopicMetadata = unknownTopicIds.map(topicId =>
metadataResponseTopic(Errors.UNKNOWN_TOPIC_ID, null, topicId, false, util.Collections.emptyList())).toSeq
val topics = if (metadataRequest.isAllTopics)
metadataCache.getAllTopics()
else if (useTopicId)
knownTopicNames
else
metadataRequest.topics.asScala.toSet
val authorizedForDescribeTopics = authHelper.filterByAuthorized(request.context, DESCRIBE, TOPIC,
topics, logIfDenied = !metadataRequest.isAllTopics)(identity)
var (authorizedTopics, unauthorizedForDescribeTopics) = topics.partition(authorizedForDescribeTopics.contains)
var unauthorizedForCreateTopics = Set[String]()
if (authorizedTopics.nonEmpty) {
val nonExistingTopics = authorizedTopics.filterNot(metadataCache.contains)
if (metadataRequest.allowAutoTopicCreation && config.autoCreateTopicsEnable && nonExistingTopics.nonEmpty) {
if (!authHelper.authorize(request.context, CREATE, CLUSTER, CLUSTER_NAME, logIfDenied = false)) {
val authorizedForCreateTopics = authHelper.filterByAuthorized(request.context, CREATE, TOPIC,
nonExistingTopics)(identity)
unauthorizedForCreateTopics = nonExistingTopics.diff(authorizedForCreateTopics)
authorizedTopics = authorizedTopics.diff(unauthorizedForCreateTopics)
}
}
}
val unauthorizedForCreateTopicMetadata = unauthorizedForCreateTopics.map(topic =>
// Set topicId to zero since we will never create topic which topicId
metadataResponseTopic(Errors.TOPIC_AUTHORIZATION_FAILED, topic, Uuid.ZERO_UUID, isInternal(topic), util.Collections.emptyList()))
// do not disclose the existence of topics unauthorized for Describe, so we've not even checked if they exist or not
val unauthorizedForDescribeTopicMetadata =
// In case of all topics, don't include topics unauthorized for Describe
if ((requestVersion == 0 && (metadataRequest.topics == null || metadataRequest.topics.isEmpty)) || metadataRequest.isAllTopics)
Set.empty[MetadataResponseTopic]
else if (useTopicId) {
// Topic IDs are not considered sensitive information, so returning TOPIC_AUTHORIZATION_FAILED is OK
unauthorizedForDescribeTopics.map(topic =>
metadataResponseTopic(Errors.TOPIC_AUTHORIZATION_FAILED, null, metadataCache.getTopicId(topic), false, util.Collections.emptyList()))
} else {
// We should not return topicId when on unauthorized error, so we return zero uuid.
unauthorizedForDescribeTopics.map(topic =>
metadataResponseTopic(Errors.TOPIC_AUTHORIZATION_FAILED, topic, Uuid.ZERO_UUID, false, util.Collections.emptyList()))
}
// In version 0, we returned an error when brokers with replicas were unavailable,
// while in higher versions we simply don't include the broker in the returned broker list
val errorUnavailableEndpoints = requestVersion == 0
// In versions 5 and below, we returned LEADER_NOT_AVAILABLE if a matching listener was not found on the leader.
// From version 6 onwards, we return LISTENER_NOT_FOUND to enable diagnosis of configuration errors.
val errorUnavailableListeners = requestVersion >= 6
val allowAutoCreation = config.autoCreateTopicsEnable && metadataRequest.allowAutoTopicCreation && !metadataRequest.isAllTopics
val topicMetadata = getTopicMetadata(request, metadataRequest.isAllTopics, allowAutoCreation, authorizedTopics,
request.context.listenerName, errorUnavailableEndpoints, errorUnavailableListeners)
var clusterAuthorizedOperations = Int.MinValue // Default value in the schema
if (requestVersion >= 8) {
// get cluster authorized operations
if (requestVersion <= 10) {
if (metadataRequest.data.includeClusterAuthorizedOperations) {
if (authHelper.authorize(request.context, DESCRIBE, CLUSTER, CLUSTER_NAME))
clusterAuthorizedOperations = authHelper.authorizedOperations(request, Resource.CLUSTER)
else
clusterAuthorizedOperations = 0
}
}
// get topic authorized operations
if (metadataRequest.data.includeTopicAuthorizedOperations) {
def setTopicAuthorizedOperations(topicMetadata: Seq[MetadataResponseTopic]): Unit = {
topicMetadata.foreach { topicData =>
topicData.setTopicAuthorizedOperations(authHelper.authorizedOperations(request, new Resource(ResourceType.TOPIC, topicData.name)))
}
}
setTopicAuthorizedOperations(topicMetadata)
}
}
val completeTopicMetadata = unknownTopicIdsTopicMetadata ++
topicMetadata ++ unauthorizedForCreateTopicMetadata ++ unauthorizedForDescribeTopicMetadata
val brokers = metadataCache.getAliveBrokerNodes(request.context.listenerName)
trace("Sending topic metadata %s and brokers %s for correlation id %d to client %s".format(completeTopicMetadata.mkString(","),
brokers.mkString(","), request.header.correlationId, request.header.clientId))
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
MetadataResponse.prepareResponse(
requestVersion,
requestThrottleMs,
brokers.toList.asJava,
clusterId,
metadataCache.getControllerId.getOrElse(MetadataResponse.NO_CONTROLLER_ID),
completeTopicMetadata.asJava,
clusterAuthorizedOperations
))
}
/**
* Handle an offset fetch request
*/
def handleOffsetFetchRequest(request: RequestChannel.Request): Unit = {
val version = request.header.apiVersion
if (version == 0) {
// reading offsets from ZK
handleOffsetFetchRequestV0(request)
} else if (version >= 1 && version <= 7) {
// reading offsets from Kafka
handleOffsetFetchRequestBetweenV1AndV7(request)
} else {
// batching offset reads for multiple groups starts with version 8 and greater
handleOffsetFetchRequestV8AndAbove(request)
}
}
private def handleOffsetFetchRequestV0(request: RequestChannel.Request): Unit = {
val header = request.header
val offsetFetchRequest = request.body[OffsetFetchRequest]
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val offsetFetchResponse =
// reject the request if not authorized to the group
if (!authHelper.authorize(request.context, DESCRIBE, GROUP, offsetFetchRequest.groupId))
offsetFetchRequest.getErrorResponse(requestThrottleMs, Errors.GROUP_AUTHORIZATION_FAILED)
else {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.unsupported("Version 0 offset fetch requests"))
val (authorizedPartitions, unauthorizedPartitions) = partitionByAuthorized(
offsetFetchRequest.partitions.asScala, request.context)
// version 0 reads offsets from ZK
val authorizedPartitionData = authorizedPartitions.map { topicPartition =>
try {
if (!metadataCache.contains(topicPartition))
(topicPartition, OffsetFetchResponse.UNKNOWN_PARTITION)
else {
val payloadOpt = zkSupport.zkClient.getConsumerOffset(offsetFetchRequest.groupId, topicPartition)
payloadOpt match {
case Some(payload) =>
(topicPartition, new OffsetFetchResponse.PartitionData(payload,
Optional.empty(), OffsetFetchResponse.NO_METADATA, Errors.NONE))
case None =>
(topicPartition, OffsetFetchResponse.UNKNOWN_PARTITION)
}
}
} catch {
case e: Throwable =>
(topicPartition, new OffsetFetchResponse.PartitionData(OffsetFetchResponse.INVALID_OFFSET,
Optional.empty(), OffsetFetchResponse.NO_METADATA, Errors.forException(e)))
}
}.toMap
val unauthorizedPartitionData = unauthorizedPartitions.map(_ -> OffsetFetchResponse.UNAUTHORIZED_PARTITION).toMap
new OffsetFetchResponse(requestThrottleMs, Errors.NONE, (authorizedPartitionData ++ unauthorizedPartitionData).asJava)
}
trace(s"Sending offset fetch response $offsetFetchResponse for correlation id ${header.correlationId} to client ${header.clientId}.")
offsetFetchResponse
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
private def handleOffsetFetchRequestBetweenV1AndV7(request: RequestChannel.Request): Unit = {
val header = request.header
val offsetFetchRequest = request.body[OffsetFetchRequest]
val groupId = offsetFetchRequest.groupId()
val (error, partitionData) = fetchOffsets(groupId, offsetFetchRequest.isAllPartitions,
offsetFetchRequest.requireStable, offsetFetchRequest.partitions, request.context)
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val offsetFetchResponse =
if (error != Errors.NONE) {
offsetFetchRequest.getErrorResponse(requestThrottleMs, error)
} else {
new OffsetFetchResponse(requestThrottleMs, Errors.NONE, partitionData.asJava)
}
trace(s"Sending offset fetch response $offsetFetchResponse for correlation id ${header.correlationId} to client ${header.clientId}.")
offsetFetchResponse
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
private def handleOffsetFetchRequestV8AndAbove(request: RequestChannel.Request): Unit = {
val header = request.header
val offsetFetchRequest = request.body[OffsetFetchRequest]
val groupIds = offsetFetchRequest.groupIds().asScala
val groupToErrorMap = mutable.Map.empty[String, Errors]
val groupToPartitionData = mutable.Map.empty[String, util.Map[TopicPartition, PartitionData]]
val groupToTopicPartitions = offsetFetchRequest.groupIdsToPartitions()
groupIds.foreach(g => {
val (error, partitionData) = fetchOffsets(g,
offsetFetchRequest.isAllPartitionsForGroup(g),
offsetFetchRequest.requireStable(),
groupToTopicPartitions.get(g), request.context)
groupToErrorMap += (g -> error)
groupToPartitionData += (g -> partitionData.asJava)
})
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val offsetFetchResponse = new OffsetFetchResponse(requestThrottleMs,
groupToErrorMap.asJava, groupToPartitionData.asJava)
trace(s"Sending offset fetch response $offsetFetchResponse for correlation id ${header.correlationId} to client ${header.clientId}.")
offsetFetchResponse
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
private def fetchOffsets(groupId: String, isAllPartitions: Boolean, requireStable: Boolean,
partitions: util.List[TopicPartition], context: RequestContext): (Errors, Map[TopicPartition, OffsetFetchResponse.PartitionData]) = {
if (!authHelper.authorize(context, DESCRIBE, GROUP, groupId)) {
(Errors.GROUP_AUTHORIZATION_FAILED, Map.empty)
} else {
if (isAllPartitions) {
val (error, allPartitionData) = groupCoordinator.handleFetchOffsets(groupId, requireStable)
if (error != Errors.NONE) {
(error, allPartitionData)
} else {
// clients are not allowed to see offsets for topics that are not authorized for Describe
val (authorizedPartitionData, _) = authHelper.partitionMapByAuthorized(context,
DESCRIBE, TOPIC, allPartitionData)(_.topic)
(Errors.NONE, authorizedPartitionData)
}
} else {
val (authorizedPartitions, unauthorizedPartitions) = partitionByAuthorized(
partitions.asScala, context)
val (error, authorizedPartitionData) = groupCoordinator.handleFetchOffsets(groupId,
requireStable, Some(authorizedPartitions))
if (error != Errors.NONE) {
(error, authorizedPartitionData)
} else {
val unauthorizedPartitionData = unauthorizedPartitions.map(_ -> OffsetFetchResponse.UNAUTHORIZED_PARTITION).toMap
(Errors.NONE, authorizedPartitionData ++ unauthorizedPartitionData)
}
}
}
}
private def partitionByAuthorized(seq: Seq[TopicPartition], context: RequestContext):
(Seq[TopicPartition], Seq[TopicPartition]) =
authHelper.partitionSeqByAuthorized(context, DESCRIBE, TOPIC, seq)(_.topic)
def handleFindCoordinatorRequest(request: RequestChannel.Request): Unit = {
val version = request.header.apiVersion
if (version < 4) {
handleFindCoordinatorRequestLessThanV4(request)
} else {
handleFindCoordinatorRequestV4AndAbove(request)
}
}
private def handleFindCoordinatorRequestV4AndAbove(request: RequestChannel.Request): Unit = {
val findCoordinatorRequest = request.body[FindCoordinatorRequest]
val coordinators = findCoordinatorRequest.data.coordinatorKeys.asScala.map { key =>
val (error, node) = getCoordinator(request, findCoordinatorRequest.data.keyType, key)
new FindCoordinatorResponseData.Coordinator()
.setKey(key)
.setErrorCode(error.code)
.setHost(node.host)
.setNodeId(node.id)
.setPort(node.port)
}
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val response = new FindCoordinatorResponse(
new FindCoordinatorResponseData()
.setCoordinators(coordinators.asJava)
.setThrottleTimeMs(requestThrottleMs))
trace("Sending FindCoordinator response %s for correlation id %d to client %s."
.format(response, request.header.correlationId, request.header.clientId))
response
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
private def handleFindCoordinatorRequestLessThanV4(request: RequestChannel.Request): Unit = {
val findCoordinatorRequest = request.body[FindCoordinatorRequest]
val (error, node) = getCoordinator(request, findCoordinatorRequest.data.keyType, findCoordinatorRequest.data.key)
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val responseBody = new FindCoordinatorResponse(
new FindCoordinatorResponseData()
.setErrorCode(error.code)
.setErrorMessage(error.message())
.setNodeId(node.id)
.setHost(node.host)
.setPort(node.port)
.setThrottleTimeMs(requestThrottleMs))
trace("Sending FindCoordinator response %s for correlation id %d to client %s."
.format(responseBody, request.header.correlationId, request.header.clientId))
responseBody
}
if (error == Errors.NONE) {
requestHelper.sendResponseMaybeThrottle(request, createResponse)
} else {
requestHelper.sendErrorResponseMaybeThrottle(request, error.exception)
}
}
private def getCoordinator(request: RequestChannel.Request, keyType: Byte, key: String): (Errors, Node) = {
if (keyType == CoordinatorType.GROUP.id &&
!authHelper.authorize(request.context, DESCRIBE, GROUP, key))
(Errors.GROUP_AUTHORIZATION_FAILED, Node.noNode)
else if (keyType == CoordinatorType.TRANSACTION.id &&
!authHelper.authorize(request.context, DESCRIBE, TRANSACTIONAL_ID, key))
(Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED, Node.noNode)
else {
val (partition, internalTopicName) = CoordinatorType.forId(keyType) match {
case CoordinatorType.GROUP =>
(groupCoordinator.partitionFor(key), GROUP_METADATA_TOPIC_NAME)
case CoordinatorType.TRANSACTION =>
(txnCoordinator.partitionFor(key), TRANSACTION_STATE_TOPIC_NAME)
}
val topicMetadata = metadataCache.getTopicMetadata(Set(internalTopicName), request.context.listenerName)
if (topicMetadata.headOption.isEmpty) {
val controllerMutationQuota = quotas.controllerMutation.newPermissiveQuotaFor(request)
autoTopicCreationManager.createTopics(Seq(internalTopicName).toSet, controllerMutationQuota, None)
(Errors.COORDINATOR_NOT_AVAILABLE, Node.noNode)
} else {
if (topicMetadata.head.errorCode != Errors.NONE.code) {
(Errors.COORDINATOR_NOT_AVAILABLE, Node.noNode)
} else {
val coordinatorEndpoint = topicMetadata.head.partitions.asScala
.find(_.partitionIndex == partition)
.filter(_.leaderId != MetadataResponse.NO_LEADER_ID)
.flatMap(metadata => metadataCache.
getAliveBrokerNode(metadata.leaderId, request.context.listenerName))
coordinatorEndpoint match {
case Some(endpoint) =>
(Errors.NONE, endpoint)
case _ =>
(Errors.COORDINATOR_NOT_AVAILABLE, Node.noNode)
}
}
}
}
}
def handleDescribeGroupRequest(request: RequestChannel.Request): Unit = {
def sendResponseCallback(describeGroupsResponseData: DescribeGroupsResponseData): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
describeGroupsResponseData.setThrottleTimeMs(requestThrottleMs)
new DescribeGroupsResponse(describeGroupsResponseData)
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
val describeRequest = request.body[DescribeGroupsRequest]
val describeGroupsResponseData = new DescribeGroupsResponseData()
describeRequest.data.groups.forEach { groupId =>
if (!authHelper.authorize(request.context, DESCRIBE, GROUP, groupId)) {
describeGroupsResponseData.groups.add(DescribeGroupsResponse.forError(groupId, Errors.GROUP_AUTHORIZATION_FAILED))
} else {
val (error, summary) = groupCoordinator.handleDescribeGroup(groupId)
val members = summary.members.map { member =>
new DescribeGroupsResponseData.DescribedGroupMember()
.setMemberId(member.memberId)
.setGroupInstanceId(member.groupInstanceId.orNull)
.setClientId(member.clientId)
.setClientHost(member.clientHost)
.setMemberAssignment(member.assignment)
.setMemberMetadata(member.metadata)
}
val describedGroup = new DescribeGroupsResponseData.DescribedGroup()
.setErrorCode(error.code)
.setGroupId(groupId)
.setGroupState(summary.state)
.setProtocolType(summary.protocolType)
.setProtocolData(summary.protocol)
.setMembers(members.asJava)
if (request.header.apiVersion >= 3) {
if (error == Errors.NONE && describeRequest.data.includeAuthorizedOperations) {
describedGroup.setAuthorizedOperations(authHelper.authorizedOperations(request, new Resource(ResourceType.GROUP, groupId)))
}
}
describeGroupsResponseData.groups.add(describedGroup)
}
}
sendResponseCallback(describeGroupsResponseData)
}
def handleListGroupsRequest(request: RequestChannel.Request): Unit = {
val listGroupsRequest = request.body[ListGroupsRequest]
val states = if (listGroupsRequest.data.statesFilter == null)
// Handle a null array the same as empty
immutable.Set[String]()
else
listGroupsRequest.data.statesFilter.asScala.toSet
def createResponse(throttleMs: Int, groups: List[GroupOverview], error: Errors): AbstractResponse = {
new ListGroupsResponse(new ListGroupsResponseData()
.setErrorCode(error.code)
.setGroups(groups.map { group =>
val listedGroup = new ListGroupsResponseData.ListedGroup()
.setGroupId(group.groupId)
.setProtocolType(group.protocolType)
.setGroupState(group.state)
listedGroup
}.asJava)
.setThrottleTimeMs(throttleMs)
)
}
val (error, groups) = groupCoordinator.handleListGroups(states)
if (authHelper.authorize(request.context, DESCRIBE, CLUSTER, CLUSTER_NAME))
// With describe cluster access all groups are returned. We keep this alternative for backward compatibility.
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
createResponse(requestThrottleMs, groups, error))
else {
val filteredGroups = groups.filter(group => authHelper.authorize(request.context, DESCRIBE, GROUP, group.groupId))
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
createResponse(requestThrottleMs, filteredGroups, error))
}
}
def handleJoinGroupRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val joinGroupRequest = request.body[JoinGroupRequest]
// the callback for sending a join-group response
def sendResponseCallback(joinResult: JoinGroupResult): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val protocolName = if (request.context.apiVersion() >= 7)
joinResult.protocolName.orNull
else
joinResult.protocolName.getOrElse(GroupCoordinator.NoProtocol)
val responseBody = new JoinGroupResponse(
new JoinGroupResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setErrorCode(joinResult.error.code)
.setGenerationId(joinResult.generationId)
.setProtocolType(joinResult.protocolType.orNull)
.setProtocolName(protocolName)
.setLeader(joinResult.leaderId)
.setSkipAssignment(joinResult.skipAssignment)
.setMemberId(joinResult.memberId)
.setMembers(joinResult.members.asJava)
)
trace("Sending join group response %s for correlation id %d to client %s."
.format(responseBody, request.header.correlationId, request.header.clientId))
responseBody
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
if (joinGroupRequest.data.groupInstanceId != null && config.interBrokerProtocolVersion.isLessThan(IBP_2_3_IV0)) {
// Only enable static membership when IBP >= 2.3, because it is not safe for the broker to use the static member logic
// until we are sure that all brokers support it. If static group being loaded by an older coordinator, it will discard
// the group.instance.id field, so static members could accidentally become "dynamic", which leads to wrong states.
sendResponseCallback(JoinGroupResult(JoinGroupRequest.UNKNOWN_MEMBER_ID, Errors.UNSUPPORTED_VERSION))
} else if (!authHelper.authorize(request.context, READ, GROUP, joinGroupRequest.data.groupId)) {
sendResponseCallback(JoinGroupResult(JoinGroupRequest.UNKNOWN_MEMBER_ID, Errors.GROUP_AUTHORIZATION_FAILED))
} else {
val groupInstanceId = Option(joinGroupRequest.data.groupInstanceId)
// Only return MEMBER_ID_REQUIRED error if joinGroupRequest version is >= 4
// and groupInstanceId is configured to unknown.
val requireKnownMemberId = joinGroupRequest.version >= 4 && groupInstanceId.isEmpty
// let the coordinator handle join-group
val protocols = joinGroupRequest.data.protocols.valuesList.asScala.map { protocol =>
(protocol.name, protocol.metadata)
}.toList
val supportSkippingAssignment = joinGroupRequest.version >= 9
groupCoordinator.handleJoinGroup(
joinGroupRequest.data.groupId,
joinGroupRequest.data.memberId,
groupInstanceId,
requireKnownMemberId,
supportSkippingAssignment,
request.header.clientId,
request.context.clientAddress.toString,
joinGroupRequest.data.rebalanceTimeoutMs,
joinGroupRequest.data.sessionTimeoutMs,
joinGroupRequest.data.protocolType,
protocols,
sendResponseCallback,
Option(joinGroupRequest.data.reason),
requestLocal)
}
}
def handleSyncGroupRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val syncGroupRequest = request.body[SyncGroupRequest]
def sendResponseCallback(syncGroupResult: SyncGroupResult): Unit = {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new SyncGroupResponse(
new SyncGroupResponseData()
.setErrorCode(syncGroupResult.error.code)
.setProtocolType(syncGroupResult.protocolType.orNull)
.setProtocolName(syncGroupResult.protocolName.orNull)
.setAssignment(syncGroupResult.memberAssignment)
.setThrottleTimeMs(requestThrottleMs)
))
}
if (syncGroupRequest.data.groupInstanceId != null && config.interBrokerProtocolVersion.isLessThan(IBP_2_3_IV0)) {
// Only enable static membership when IBP >= 2.3, because it is not safe for the broker to use the static member logic
// until we are sure that all brokers support it. If static group being loaded by an older coordinator, it will discard
// the group.instance.id field, so static members could accidentally become "dynamic", which leads to wrong states.
sendResponseCallback(SyncGroupResult(Errors.UNSUPPORTED_VERSION))
} else if (!syncGroupRequest.areMandatoryProtocolTypeAndNamePresent()) {
// Starting from version 5, ProtocolType and ProtocolName fields are mandatory.
sendResponseCallback(SyncGroupResult(Errors.INCONSISTENT_GROUP_PROTOCOL))
} else if (!authHelper.authorize(request.context, READ, GROUP, syncGroupRequest.data.groupId)) {
sendResponseCallback(SyncGroupResult(Errors.GROUP_AUTHORIZATION_FAILED))
} else {
val assignmentMap = immutable.Map.newBuilder[String, Array[Byte]]
syncGroupRequest.data.assignments.forEach { assignment =>
assignmentMap += (assignment.memberId -> assignment.assignment)
}
groupCoordinator.handleSyncGroup(
syncGroupRequest.data.groupId,
syncGroupRequest.data.generationId,
syncGroupRequest.data.memberId,
Option(syncGroupRequest.data.protocolType),
Option(syncGroupRequest.data.protocolName),
Option(syncGroupRequest.data.groupInstanceId),
assignmentMap.result(),
sendResponseCallback,
requestLocal
)
}
}
def handleDeleteGroupsRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val deleteGroupsRequest = request.body[DeleteGroupsRequest]
val groups = deleteGroupsRequest.data.groupsNames.asScala.distinct
val (authorizedGroups, unauthorizedGroups) = authHelper.partitionSeqByAuthorized(request.context, DELETE, GROUP,
groups)(identity)
val groupDeletionResult = groupCoordinator.handleDeleteGroups(authorizedGroups.toSet, requestLocal) ++
unauthorizedGroups.map(_ -> Errors.GROUP_AUTHORIZATION_FAILED)
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => {
val deletionCollections = new DeletableGroupResultCollection()
groupDeletionResult.forKeyValue { (groupId, error) =>
deletionCollections.add(new DeletableGroupResult()
.setGroupId(groupId)
.setErrorCode(error.code)
)
}
new DeleteGroupsResponse(new DeleteGroupsResponseData()
.setResults(deletionCollections)
.setThrottleTimeMs(requestThrottleMs)
)
})
}
def handleHeartbeatRequest(request: RequestChannel.Request): Unit = {
val heartbeatRequest = request.body[HeartbeatRequest]
// the callback for sending a heartbeat response
def sendResponseCallback(error: Errors): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val response = new HeartbeatResponse(
new HeartbeatResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setErrorCode(error.code))
trace("Sending heartbeat response %s for correlation id %d to client %s."
.format(response, request.header.correlationId, request.header.clientId))
response
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
if (heartbeatRequest.data.groupInstanceId != null && config.interBrokerProtocolVersion.isLessThan(IBP_2_3_IV0)) {
// Only enable static membership when IBP >= 2.3, because it is not safe for the broker to use the static member logic
// until we are sure that all brokers support it. If static group being loaded by an older coordinator, it will discard
// the group.instance.id field, so static members could accidentally become "dynamic", which leads to wrong states.
sendResponseCallback(Errors.UNSUPPORTED_VERSION)
} else if (!authHelper.authorize(request.context, READ, GROUP, heartbeatRequest.data.groupId)) {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new HeartbeatResponse(
new HeartbeatResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setErrorCode(Errors.GROUP_AUTHORIZATION_FAILED.code)))
} else {
// let the coordinator to handle heartbeat
groupCoordinator.handleHeartbeat(
heartbeatRequest.data.groupId,
heartbeatRequest.data.memberId,
Option(heartbeatRequest.data.groupInstanceId),
heartbeatRequest.data.generationId,
sendResponseCallback)
}
}
def handleLeaveGroupRequest(request: RequestChannel.Request): Unit = {
val leaveGroupRequest = request.body[LeaveGroupRequest]
val members = leaveGroupRequest.members.asScala.toList
if (!authHelper.authorize(request.context, READ, GROUP, leaveGroupRequest.data.groupId)) {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => {
new LeaveGroupResponse(new LeaveGroupResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setErrorCode(Errors.GROUP_AUTHORIZATION_FAILED.code)
)
})
} else {
def sendResponseCallback(leaveGroupResult : LeaveGroupResult): Unit = {
val memberResponses = leaveGroupResult.memberResponses.map(
leaveGroupResult =>
new MemberResponse()
.setErrorCode(leaveGroupResult.error.code)
.setMemberId(leaveGroupResult.memberId)
.setGroupInstanceId(leaveGroupResult.groupInstanceId.orNull)
)
def createResponse(requestThrottleMs: Int): AbstractResponse = {
new LeaveGroupResponse(
memberResponses.asJava,
leaveGroupResult.topLevelError,
requestThrottleMs,
leaveGroupRequest.version)
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
groupCoordinator.handleLeaveGroup(
leaveGroupRequest.data.groupId,
members,
sendResponseCallback)
}
}
def handleSaslHandshakeRequest(request: RequestChannel.Request): Unit = {
val responseData = new SaslHandshakeResponseData().setErrorCode(Errors.ILLEGAL_SASL_STATE.code)
requestHelper.sendResponseMaybeThrottle(request, _ => new SaslHandshakeResponse(responseData))
}
def handleSaslAuthenticateRequest(request: RequestChannel.Request): Unit = {
val responseData = new SaslAuthenticateResponseData()
.setErrorCode(Errors.ILLEGAL_SASL_STATE.code)
.setErrorMessage("SaslAuthenticate request received after successful authentication")
requestHelper.sendResponseMaybeThrottle(request, _ => new SaslAuthenticateResponse(responseData))
}
def handleApiVersionsRequest(request: RequestChannel.Request): Unit = {
// Note that broker returns its full list of supported ApiKeys and versions regardless of current
// authentication state (e.g., before SASL authentication on an SASL listener, do note that no
// Kafka protocol requests may take place on an SSL listener before the SSL handshake is finished).
// If this is considered to leak information about the broker version a workaround is to use SSL
// with client authentication which is performed at an earlier stage of the connection where the
// ApiVersionRequest is not available.
def createResponseCallback(requestThrottleMs: Int): ApiVersionsResponse = {
val apiVersionRequest = request.body[ApiVersionsRequest]
if (apiVersionRequest.hasUnsupportedRequestVersion) {
apiVersionRequest.getErrorResponse(requestThrottleMs, Errors.UNSUPPORTED_VERSION.exception)
} else if (!apiVersionRequest.isValid) {
apiVersionRequest.getErrorResponse(requestThrottleMs, Errors.INVALID_REQUEST.exception)
} else {
apiVersionManager.apiVersionResponse(requestThrottleMs)
}
}
requestHelper.sendResponseMaybeThrottle(request, createResponseCallback)
}
def handleCreateTopicsRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val controllerMutationQuota = quotas.controllerMutation.newQuotaFor(request, strictSinceVersion = 6)
def sendResponseCallback(results: CreatableTopicResultCollection): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val responseData = new CreateTopicsResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setTopics(results)
val responseBody = new CreateTopicsResponse(responseData)
trace(s"Sending create topics response $responseData for correlation id " +
s"${request.header.correlationId} to client ${request.header.clientId}.")
responseBody
}
requestHelper.sendResponseMaybeThrottleWithControllerQuota(controllerMutationQuota, request, createResponse)
}
val createTopicsRequest = request.body[CreateTopicsRequest]
val results = new CreatableTopicResultCollection(createTopicsRequest.data.topics.size)
if (!zkSupport.controller.isActive) {
createTopicsRequest.data.topics.forEach { topic =>
results.add(new CreatableTopicResult().setName(topic.name)
.setErrorCode(Errors.NOT_CONTROLLER.code))
}
sendResponseCallback(results)
} else {
createTopicsRequest.data.topics.forEach { topic =>
results.add(new CreatableTopicResult().setName(topic.name))
}
val hasClusterAuthorization = authHelper.authorize(request.context, CREATE, CLUSTER, CLUSTER_NAME,
logIfDenied = false)
val topics = createTopicsRequest.data.topics.asScala.map(_.name)
val authorizedTopics =
if (hasClusterAuthorization) topics.toSet
else authHelper.filterByAuthorized(request.context, CREATE, TOPIC, topics)(identity)
val authorizedForDescribeConfigs = authHelper.filterByAuthorized(request.context, DESCRIBE_CONFIGS, TOPIC,
topics, logIfDenied = false)(identity).map(name => name -> results.find(name)).toMap
results.forEach { topic =>
if (results.findAll(topic.name).size > 1) {
topic.setErrorCode(Errors.INVALID_REQUEST.code)
topic.setErrorMessage("Found multiple entries for this topic.")
} else if (!authorizedTopics.contains(topic.name)) {
topic.setErrorCode(Errors.TOPIC_AUTHORIZATION_FAILED.code)
topic.setErrorMessage("Authorization failed.")
}
if (!authorizedForDescribeConfigs.contains(topic.name)) {
topic.setTopicConfigErrorCode(Errors.TOPIC_AUTHORIZATION_FAILED.code)
}
}
val toCreate = mutable.Map[String, CreatableTopic]()
createTopicsRequest.data.topics.forEach { topic =>
if (results.find(topic.name).errorCode == Errors.NONE.code) {
toCreate += topic.name -> topic
}
}
def handleCreateTopicsResults(errors: Map[String, ApiError]): Unit = {
errors.foreach { case (topicName, error) =>
val result = results.find(topicName)
result.setErrorCode(error.error.code)
.setErrorMessage(error.message)
// Reset any configs in the response if Create failed
if (error != ApiError.NONE) {
result.setConfigs(List.empty.asJava)
.setNumPartitions(-1)
.setReplicationFactor(-1)
.setTopicConfigErrorCode(Errors.NONE.code)
}
}
sendResponseCallback(results)
}
zkSupport.adminManager.createTopics(
createTopicsRequest.data.timeoutMs,
createTopicsRequest.data.validateOnly,
toCreate,
authorizedForDescribeConfigs,
controllerMutationQuota,
handleCreateTopicsResults)
}
}
def handleCreatePartitionsRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val createPartitionsRequest = request.body[CreatePartitionsRequest]
val controllerMutationQuota = quotas.controllerMutation.newQuotaFor(request, strictSinceVersion = 3)
def sendResponseCallback(results: Map[String, ApiError]): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val createPartitionsResults = results.map {
case (topic, error) => new CreatePartitionsTopicResult()
.setName(topic)
.setErrorCode(error.error.code)
.setErrorMessage(error.message)
}.toSeq
val responseBody = new CreatePartitionsResponse(new CreatePartitionsResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setResults(createPartitionsResults.asJava))
trace(s"Sending create partitions response $responseBody for correlation id ${request.header.correlationId} to " +
s"client ${request.header.clientId}.")
responseBody
}
requestHelper.sendResponseMaybeThrottleWithControllerQuota(controllerMutationQuota, request, createResponse)
}
if (!zkSupport.controller.isActive) {
val result = createPartitionsRequest.data.topics.asScala.map { topic =>
(topic.name, new ApiError(Errors.NOT_CONTROLLER, null))
}.toMap
sendResponseCallback(result)
} else {
// Special handling to add duplicate topics to the response
val topics = createPartitionsRequest.data.topics.asScala.toSeq
val dupes = topics.groupBy(_.name)
.filter { _._2.size > 1 }
.keySet
val notDuped = topics.filterNot(topic => dupes.contains(topic.name))
val (authorized, unauthorized) = authHelper.partitionSeqByAuthorized(request.context, ALTER, TOPIC,
notDuped)(_.name)
val (queuedForDeletion, valid) = authorized.partition { topic =>
zkSupport.controller.isTopicQueuedForDeletion(topic.name)
}
val errors = dupes.map(_ -> new ApiError(Errors.INVALID_REQUEST, "Duplicate topic in request.")) ++
unauthorized.map(_.name -> new ApiError(Errors.TOPIC_AUTHORIZATION_FAILED, "The topic authorization is failed.")) ++
queuedForDeletion.map(_.name -> new ApiError(Errors.INVALID_TOPIC_EXCEPTION, "The topic is queued for deletion."))
zkSupport.adminManager.createPartitions(
createPartitionsRequest.data.timeoutMs,
valid,
createPartitionsRequest.data.validateOnly,
controllerMutationQuota,
result => sendResponseCallback(result ++ errors))
}
}
def handleDeleteTopicsRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val controllerMutationQuota = quotas.controllerMutation.newQuotaFor(request, strictSinceVersion = 5)
def sendResponseCallback(results: DeletableTopicResultCollection): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val responseData = new DeleteTopicsResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setResponses(results)
val responseBody = new DeleteTopicsResponse(responseData)
trace(s"Sending delete topics response $responseBody for correlation id ${request.header.correlationId} to client ${request.header.clientId}.")
responseBody
}
requestHelper.sendResponseMaybeThrottleWithControllerQuota(controllerMutationQuota, request, createResponse)
}
val deleteTopicRequest = request.body[DeleteTopicsRequest]
val results = new DeletableTopicResultCollection(deleteTopicRequest.numberOfTopics())
val toDelete = mutable.Set[String]()
if (!zkSupport.controller.isActive) {
deleteTopicRequest.topics().forEach { topic =>
results.add(new DeletableTopicResult()
.setName(topic.name())
.setTopicId(topic.topicId())
.setErrorCode(Errors.NOT_CONTROLLER.code))
}
sendResponseCallback(results)
} else if (!config.deleteTopicEnable) {
val error = if (request.context.apiVersion < 3) Errors.INVALID_REQUEST else Errors.TOPIC_DELETION_DISABLED
deleteTopicRequest.topics().forEach { topic =>
results.add(new DeletableTopicResult()
.setName(topic.name())
.setTopicId(topic.topicId())
.setErrorCode(error.code))
}
sendResponseCallback(results)
} else {
val topicIdsFromRequest = deleteTopicRequest.topicIds().asScala.filter(topicId => topicId != Uuid.ZERO_UUID).toSet
deleteTopicRequest.topics().forEach { topic =>
if (topic.name() != null && topic.topicId() != Uuid.ZERO_UUID)
throw new InvalidRequestException("Topic name and topic ID can not both be specified.")
val name = if (topic.topicId() == Uuid.ZERO_UUID) topic.name()
else zkSupport.controller.controllerContext.topicName(topic.topicId).orNull
results.add(new DeletableTopicResult()
.setName(name)
.setTopicId(topic.topicId()))
}
val authorizedDescribeTopics = authHelper.filterByAuthorized(request.context, DESCRIBE, TOPIC,
results.asScala.filter(result => result.name() != null))(_.name)
val authorizedDeleteTopics = authHelper.filterByAuthorized(request.context, DELETE, TOPIC,
results.asScala.filter(result => result.name() != null))(_.name)
results.forEach { topic =>
val unresolvedTopicId = topic.topicId() != Uuid.ZERO_UUID && topic.name() == null
if (unresolvedTopicId) {
topic.setErrorCode(Errors.UNKNOWN_TOPIC_ID.code)
} else if (topicIdsFromRequest.contains(topic.topicId) && !authorizedDescribeTopics.contains(topic.name)) {
// Because the client does not have Describe permission, the name should
// not be returned in the response. Note, however, that we do not consider
// the topicId itself to be sensitive, so there is no reason to obscure
// this case with `UNKNOWN_TOPIC_ID`.
topic.setName(null)
topic.setErrorCode(Errors.TOPIC_AUTHORIZATION_FAILED.code)
} else if (!authorizedDeleteTopics.contains(topic.name)) {
topic.setErrorCode(Errors.TOPIC_AUTHORIZATION_FAILED.code)
} else if (!metadataCache.contains(topic.name)) {
topic.setErrorCode(Errors.UNKNOWN_TOPIC_OR_PARTITION.code)
} else {
toDelete += topic.name
}
}
// If no authorized topics return immediately
if (toDelete.isEmpty)
sendResponseCallback(results)
else {
def handleDeleteTopicsResults(errors: Map[String, Errors]): Unit = {
errors.foreach {
case (topicName, error) =>
results.find(topicName)
.setErrorCode(error.code)
}
sendResponseCallback(results)
}
zkSupport.adminManager.deleteTopics(
deleteTopicRequest.data.timeoutMs,
toDelete,
controllerMutationQuota,
handleDeleteTopicsResults
)
}
}
}
def handleDeleteRecordsRequest(request: RequestChannel.Request): Unit = {
val deleteRecordsRequest = request.body[DeleteRecordsRequest]
val unauthorizedTopicResponses = mutable.Map[TopicPartition, DeleteRecordsPartitionResult]()
val nonExistingTopicResponses = mutable.Map[TopicPartition, DeleteRecordsPartitionResult]()
val authorizedForDeleteTopicOffsets = mutable.Map[TopicPartition, Long]()
val topics = deleteRecordsRequest.data.topics.asScala
val authorizedTopics = authHelper.filterByAuthorized(request.context, DELETE, TOPIC, topics)(_.name)
val deleteTopicPartitions = topics.flatMap { deleteTopic =>
deleteTopic.partitions.asScala.map { deletePartition =>
new TopicPartition(deleteTopic.name, deletePartition.partitionIndex) -> deletePartition.offset
}
}
for ((topicPartition, offset) <- deleteTopicPartitions) {
if (!authorizedTopics.contains(topicPartition.topic))
unauthorizedTopicResponses += topicPartition -> new DeleteRecordsPartitionResult()
.setLowWatermark(DeleteRecordsResponse.INVALID_LOW_WATERMARK)
.setErrorCode(Errors.TOPIC_AUTHORIZATION_FAILED.code)
else if (!metadataCache.contains(topicPartition))
nonExistingTopicResponses += topicPartition -> new DeleteRecordsPartitionResult()
.setLowWatermark(DeleteRecordsResponse.INVALID_LOW_WATERMARK)
.setErrorCode(Errors.UNKNOWN_TOPIC_OR_PARTITION.code)
else
authorizedForDeleteTopicOffsets += (topicPartition -> offset)
}
// the callback for sending a DeleteRecordsResponse
def sendResponseCallback(authorizedTopicResponses: Map[TopicPartition, DeleteRecordsPartitionResult]): Unit = {
val mergedResponseStatus = authorizedTopicResponses ++ unauthorizedTopicResponses ++ nonExistingTopicResponses
mergedResponseStatus.forKeyValue { (topicPartition, status) =>
if (status.errorCode != Errors.NONE.code) {
debug("DeleteRecordsRequest with correlation id %d from client %s on partition %s failed due to %s".format(
request.header.correlationId,
request.header.clientId,
topicPartition,
Errors.forCode(status.errorCode).exceptionName))
}
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new DeleteRecordsResponse(new DeleteRecordsResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setTopics(new DeleteRecordsResponseData.DeleteRecordsTopicResultCollection(mergedResponseStatus.groupBy(_._1.topic).map { case (topic, partitionMap) =>
new DeleteRecordsTopicResult()
.setName(topic)
.setPartitions(new DeleteRecordsResponseData.DeleteRecordsPartitionResultCollection(partitionMap.map { case (topicPartition, partitionResult) =>
new DeleteRecordsPartitionResult().setPartitionIndex(topicPartition.partition)
.setLowWatermark(partitionResult.lowWatermark)
.setErrorCode(partitionResult.errorCode)
}.toList.asJava.iterator()))
}.toList.asJava.iterator()))))
}
if (authorizedForDeleteTopicOffsets.isEmpty)
sendResponseCallback(Map.empty)
else {
// call the replica manager to append messages to the replicas
replicaManager.deleteRecords(
deleteRecordsRequest.data.timeoutMs.toLong,
authorizedForDeleteTopicOffsets,
sendResponseCallback)
}
}
def handleInitProducerIdRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val initProducerIdRequest = request.body[InitProducerIdRequest]
val transactionalId = initProducerIdRequest.data.transactionalId
if (transactionalId != null) {
if (!authHelper.authorize(request.context, WRITE, TRANSACTIONAL_ID, transactionalId)) {
requestHelper.sendErrorResponseMaybeThrottle(request, Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED.exception)
return
}
} else if (!authHelper.authorize(request.context, IDEMPOTENT_WRITE, CLUSTER, CLUSTER_NAME, true, false)
&& !authHelper.authorizeByResourceType(request.context, AclOperation.WRITE, ResourceType.TOPIC)) {
requestHelper.sendErrorResponseMaybeThrottle(request, Errors.CLUSTER_AUTHORIZATION_FAILED.exception)
return
}
def sendResponseCallback(result: InitProducerIdResult): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val finalError =
if (initProducerIdRequest.version < 4 && result.error == Errors.PRODUCER_FENCED) {
// For older clients, they could not understand the new PRODUCER_FENCED error code,
// so we need to return the INVALID_PRODUCER_EPOCH to have the same client handling logic.
Errors.INVALID_PRODUCER_EPOCH
} else {
result.error
}
val responseData = new InitProducerIdResponseData()
.setProducerId(result.producerId)
.setProducerEpoch(result.producerEpoch)
.setThrottleTimeMs(requestThrottleMs)
.setErrorCode(finalError.code)
val responseBody = new InitProducerIdResponse(responseData)
trace(s"Completed $transactionalId's InitProducerIdRequest with result $result from client ${request.header.clientId}.")
responseBody
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
val producerIdAndEpoch = (initProducerIdRequest.data.producerId, initProducerIdRequest.data.producerEpoch) match {
case (RecordBatch.NO_PRODUCER_ID, RecordBatch.NO_PRODUCER_EPOCH) => Right(None)
case (RecordBatch.NO_PRODUCER_ID, _) | (_, RecordBatch.NO_PRODUCER_EPOCH) => Left(Errors.INVALID_REQUEST)
case (_, _) => Right(Some(new ProducerIdAndEpoch(initProducerIdRequest.data.producerId, initProducerIdRequest.data.producerEpoch)))
}
producerIdAndEpoch match {
case Right(producerIdAndEpoch) => txnCoordinator.handleInitProducerId(transactionalId, initProducerIdRequest.data.transactionTimeoutMs,
producerIdAndEpoch, sendResponseCallback, requestLocal)
case Left(error) => requestHelper.sendErrorResponseMaybeThrottle(request, error.exception)
}
}
def handleEndTxnRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
ensureInterBrokerVersion(IBP_0_11_0_IV0)
val endTxnRequest = request.body[EndTxnRequest]
val transactionalId = endTxnRequest.data.transactionalId
if (authHelper.authorize(request.context, WRITE, TRANSACTIONAL_ID, transactionalId)) {
def sendResponseCallback(error: Errors): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val finalError =
if (endTxnRequest.version < 2 && error == Errors.PRODUCER_FENCED) {
// For older clients, they could not understand the new PRODUCER_FENCED error code,
// so we need to return the INVALID_PRODUCER_EPOCH to have the same client handling logic.
Errors.INVALID_PRODUCER_EPOCH
} else {
error
}
val responseBody = new EndTxnResponse(new EndTxnResponseData()
.setErrorCode(finalError.code)
.setThrottleTimeMs(requestThrottleMs))
trace(s"Completed ${endTxnRequest.data.transactionalId}'s EndTxnRequest " +
s"with committed: ${endTxnRequest.data.committed}, " +
s"errors: $error from client ${request.header.clientId}.")
responseBody
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
txnCoordinator.handleEndTransaction(endTxnRequest.data.transactionalId,
endTxnRequest.data.producerId,
endTxnRequest.data.producerEpoch,
endTxnRequest.result(),
sendResponseCallback,
requestLocal)
} else
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new EndTxnResponse(new EndTxnResponseData()
.setErrorCode(Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED.code)
.setThrottleTimeMs(requestThrottleMs))
)
}
def handleWriteTxnMarkersRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
ensureInterBrokerVersion(IBP_0_11_0_IV0)
authHelper.authorizeClusterOperation(request, CLUSTER_ACTION)
val writeTxnMarkersRequest = request.body[WriteTxnMarkersRequest]
val errors = new ConcurrentHashMap[java.lang.Long, util.Map[TopicPartition, Errors]]()
val markers = writeTxnMarkersRequest.markers
val numAppends = new AtomicInteger(markers.size)
if (numAppends.get == 0) {
requestHelper.sendResponseExemptThrottle(request, new WriteTxnMarkersResponse(errors))
return
}
def updateErrors(producerId: Long, currentErrors: ConcurrentHashMap[TopicPartition, Errors]): Unit = {
val previousErrors = errors.putIfAbsent(producerId, currentErrors)
if (previousErrors != null)
previousErrors.putAll(currentErrors)
}
/**
* This is the call back invoked when a log append of transaction markers succeeds. This can be called multiple
* times when handling a single WriteTxnMarkersRequest because there is one append per TransactionMarker in the
* request, so there could be multiple appends of markers to the log. The final response will be sent only
* after all appends have returned.
*/
def maybeSendResponseCallback(producerId: Long, result: TransactionResult)(responseStatus: Map[TopicPartition, PartitionResponse]): Unit = {
trace(s"End transaction marker append for producer id $producerId completed with status: $responseStatus")
val currentErrors = new ConcurrentHashMap[TopicPartition, Errors](responseStatus.map { case (k, v) => k -> v.error }.asJava)
updateErrors(producerId, currentErrors)
val successfulOffsetsPartitions = responseStatus.filter { case (topicPartition, partitionResponse) =>
topicPartition.topic == GROUP_METADATA_TOPIC_NAME && partitionResponse.error == Errors.NONE
}.keys
if (successfulOffsetsPartitions.nonEmpty) {
// as soon as the end transaction marker has been written for a transactional offset commit,
// call to the group coordinator to materialize the offsets into the cache
try {
groupCoordinator.scheduleHandleTxnCompletion(producerId, successfulOffsetsPartitions, result)
} catch {
case e: Exception =>
error(s"Received an exception while trying to update the offsets cache on transaction marker append", e)
val updatedErrors = new ConcurrentHashMap[TopicPartition, Errors]()
successfulOffsetsPartitions.foreach(updatedErrors.put(_, Errors.UNKNOWN_SERVER_ERROR))
updateErrors(producerId, updatedErrors)
}
}
if (numAppends.decrementAndGet() == 0)
requestHelper.sendResponseExemptThrottle(request, new WriteTxnMarkersResponse(errors))
}
// TODO: The current append API makes doing separate writes per producerId a little easier, but it would
// be nice to have only one append to the log. This requires pushing the building of the control records
// into Log so that we only append those having a valid producer epoch, and exposing a new appendControlRecord
// API in ReplicaManager. For now, we've done the simpler approach
var skippedMarkers = 0
for (marker <- markers.asScala) {
val producerId = marker.producerId
val partitionsWithCompatibleMessageFormat = new mutable.ArrayBuffer[TopicPartition]
val currentErrors = new ConcurrentHashMap[TopicPartition, Errors]()
marker.partitions.forEach { partition =>
replicaManager.getMagic(partition) match {
case Some(magic) =>
if (magic < RecordBatch.MAGIC_VALUE_V2)
currentErrors.put(partition, Errors.UNSUPPORTED_FOR_MESSAGE_FORMAT)
else
partitionsWithCompatibleMessageFormat += partition
case None =>
currentErrors.put(partition, Errors.UNKNOWN_TOPIC_OR_PARTITION)
}
}
if (!currentErrors.isEmpty)
updateErrors(producerId, currentErrors)
if (partitionsWithCompatibleMessageFormat.isEmpty) {
numAppends.decrementAndGet()
skippedMarkers += 1
} else {
val controlRecords = partitionsWithCompatibleMessageFormat.map { partition =>
val controlRecordType = marker.transactionResult match {
case TransactionResult.COMMIT => ControlRecordType.COMMIT
case TransactionResult.ABORT => ControlRecordType.ABORT
}
val endTxnMarker = new EndTransactionMarker(controlRecordType, marker.coordinatorEpoch)
partition -> MemoryRecords.withEndTransactionMarker(producerId, marker.producerEpoch, endTxnMarker)
}.toMap
replicaManager.appendRecords(
timeout = config.requestTimeoutMs.toLong,
requiredAcks = -1,
internalTopicsAllowed = true,
origin = AppendOrigin.Coordinator,
entriesPerPartition = controlRecords,
requestLocal = requestLocal,
responseCallback = maybeSendResponseCallback(producerId, marker.transactionResult))
}
}
// No log appends were written as all partitions had incorrect log format
// so we need to send the error response
if (skippedMarkers == markers.size)
requestHelper.sendResponseExemptThrottle(request, new WriteTxnMarkersResponse(errors))
}
def ensureInterBrokerVersion(version: MetadataVersion): Unit = {
if (config.interBrokerProtocolVersion.isLessThan(version))
throw new UnsupportedVersionException(s"inter.broker.protocol.version: ${config.interBrokerProtocolVersion.version} is less than the required version: ${version.version}")
}
def handleAddPartitionToTxnRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
ensureInterBrokerVersion(IBP_0_11_0_IV0)
val addPartitionsToTxnRequest = request.body[AddPartitionsToTxnRequest]
val transactionalId = addPartitionsToTxnRequest.data.transactionalId
val partitionsToAdd = addPartitionsToTxnRequest.partitions.asScala
if (!authHelper.authorize(request.context, WRITE, TRANSACTIONAL_ID, transactionalId))
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
addPartitionsToTxnRequest.getErrorResponse(requestThrottleMs, Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED.exception))
else {
val unauthorizedTopicErrors = mutable.Map[TopicPartition, Errors]()
val nonExistingTopicErrors = mutable.Map[TopicPartition, Errors]()
val authorizedPartitions = mutable.Set[TopicPartition]()
val authorizedTopics = authHelper.filterByAuthorized(request.context, WRITE, TOPIC,
partitionsToAdd.filterNot(tp => Topic.isInternal(tp.topic)))(_.topic)
for (topicPartition <- partitionsToAdd) {
if (!authorizedTopics.contains(topicPartition.topic))
unauthorizedTopicErrors += topicPartition -> Errors.TOPIC_AUTHORIZATION_FAILED
else if (!metadataCache.contains(topicPartition))
nonExistingTopicErrors += topicPartition -> Errors.UNKNOWN_TOPIC_OR_PARTITION
else
authorizedPartitions.add(topicPartition)
}
if (unauthorizedTopicErrors.nonEmpty || nonExistingTopicErrors.nonEmpty) {
// Any failed partition check causes the entire request to fail. We send the appropriate error codes for the
// partitions which failed, and an 'OPERATION_NOT_ATTEMPTED' error code for the partitions which succeeded
// the authorization check to indicate that they were not added to the transaction.
val partitionErrors = unauthorizedTopicErrors ++ nonExistingTopicErrors ++
authorizedPartitions.map(_ -> Errors.OPERATION_NOT_ATTEMPTED)
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new AddPartitionsToTxnResponse(requestThrottleMs, partitionErrors.asJava))
} else {
def sendResponseCallback(error: Errors): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val finalError =
if (addPartitionsToTxnRequest.version < 2 && error == Errors.PRODUCER_FENCED) {
// For older clients, they could not understand the new PRODUCER_FENCED error code,
// so we need to return the old INVALID_PRODUCER_EPOCH to have the same client handling logic.
Errors.INVALID_PRODUCER_EPOCH
} else {
error
}
val responseBody: AddPartitionsToTxnResponse = new AddPartitionsToTxnResponse(requestThrottleMs,
partitionsToAdd.map{tp => (tp, finalError)}.toMap.asJava)
trace(s"Completed $transactionalId's AddPartitionsToTxnRequest with partitions $partitionsToAdd: errors: $error from client ${request.header.clientId}")
responseBody
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
txnCoordinator.handleAddPartitionsToTransaction(transactionalId,
addPartitionsToTxnRequest.data.producerId,
addPartitionsToTxnRequest.data.producerEpoch,
authorizedPartitions,
sendResponseCallback,
requestLocal)
}
}
}
def handleAddOffsetsToTxnRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
ensureInterBrokerVersion(IBP_0_11_0_IV0)
val addOffsetsToTxnRequest = request.body[AddOffsetsToTxnRequest]
val transactionalId = addOffsetsToTxnRequest.data.transactionalId
val groupId = addOffsetsToTxnRequest.data.groupId
val offsetTopicPartition = new TopicPartition(GROUP_METADATA_TOPIC_NAME, groupCoordinator.partitionFor(groupId))
if (!authHelper.authorize(request.context, WRITE, TRANSACTIONAL_ID, transactionalId))
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new AddOffsetsToTxnResponse(new AddOffsetsToTxnResponseData()
.setErrorCode(Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED.code)
.setThrottleTimeMs(requestThrottleMs)))
else if (!authHelper.authorize(request.context, READ, GROUP, groupId))
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new AddOffsetsToTxnResponse(new AddOffsetsToTxnResponseData()
.setErrorCode(Errors.GROUP_AUTHORIZATION_FAILED.code)
.setThrottleTimeMs(requestThrottleMs))
)
else {
def sendResponseCallback(error: Errors): Unit = {
def createResponse(requestThrottleMs: Int): AbstractResponse = {
val finalError =
if (addOffsetsToTxnRequest.version < 2 && error == Errors.PRODUCER_FENCED) {
// For older clients, they could not understand the new PRODUCER_FENCED error code,
// so we need to return the old INVALID_PRODUCER_EPOCH to have the same client handling logic.
Errors.INVALID_PRODUCER_EPOCH
} else {
error
}
val responseBody: AddOffsetsToTxnResponse = new AddOffsetsToTxnResponse(
new AddOffsetsToTxnResponseData()
.setErrorCode(finalError.code)
.setThrottleTimeMs(requestThrottleMs))
trace(s"Completed $transactionalId's AddOffsetsToTxnRequest for group $groupId on partition " +
s"$offsetTopicPartition: errors: $error from client ${request.header.clientId}")
responseBody
}
requestHelper.sendResponseMaybeThrottle(request, createResponse)
}
txnCoordinator.handleAddPartitionsToTransaction(transactionalId,
addOffsetsToTxnRequest.data.producerId,
addOffsetsToTxnRequest.data.producerEpoch,
Set(offsetTopicPartition),
sendResponseCallback,
requestLocal)
}
}
def handleTxnOffsetCommitRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
ensureInterBrokerVersion(IBP_0_11_0_IV0)
val header = request.header
val txnOffsetCommitRequest = request.body[TxnOffsetCommitRequest]
// authorize for the transactionalId and the consumer group. Note that we skip producerId authorization
// since it is implied by transactionalId authorization
if (!authHelper.authorize(request.context, WRITE, TRANSACTIONAL_ID, txnOffsetCommitRequest.data.transactionalId))
requestHelper.sendErrorResponseMaybeThrottle(request, Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED.exception)
else if (!authHelper.authorize(request.context, READ, GROUP, txnOffsetCommitRequest.data.groupId))
requestHelper.sendErrorResponseMaybeThrottle(request, Errors.GROUP_AUTHORIZATION_FAILED.exception)
else {
val unauthorizedTopicErrors = mutable.Map[TopicPartition, Errors]()
val nonExistingTopicErrors = mutable.Map[TopicPartition, Errors]()
val authorizedTopicCommittedOffsets = mutable.Map[TopicPartition, TxnOffsetCommitRequest.CommittedOffset]()
val committedOffsets = txnOffsetCommitRequest.offsets.asScala
val authorizedTopics = authHelper.filterByAuthorized(request.context, READ, TOPIC, committedOffsets)(_._1.topic)
for ((topicPartition, commitedOffset) <- committedOffsets) {
if (!authorizedTopics.contains(topicPartition.topic))
unauthorizedTopicErrors += topicPartition -> Errors.TOPIC_AUTHORIZATION_FAILED
else if (!metadataCache.contains(topicPartition))
nonExistingTopicErrors += topicPartition -> Errors.UNKNOWN_TOPIC_OR_PARTITION
else
authorizedTopicCommittedOffsets += (topicPartition -> commitedOffset)
}
// the callback for sending an offset commit response
def sendResponseCallback(authorizedTopicErrors: Map[TopicPartition, Errors]): Unit = {
val combinedCommitStatus = mutable.Map() ++= authorizedTopicErrors ++= unauthorizedTopicErrors ++= nonExistingTopicErrors
if (isDebugEnabled)
combinedCommitStatus.forKeyValue { (topicPartition, error) =>
if (error != Errors.NONE) {
debug(s"TxnOffsetCommit with correlation id ${header.correlationId} from client ${header.clientId} " +
s"on partition $topicPartition failed due to ${error.exceptionName}")
}
}
// We need to replace COORDINATOR_LOAD_IN_PROGRESS with COORDINATOR_NOT_AVAILABLE
// for older producer client from 0.11 to prior 2.0, which could potentially crash due
// to unexpected loading error. This bug is fixed later by KAFKA-7296. Clients using
// txn commit protocol >= 2 (version 2.3 and onwards) are guaranteed to have
// the fix to check for the loading error.
if (txnOffsetCommitRequest.version < 2) {
combinedCommitStatus ++= combinedCommitStatus.collect {
case (tp, error) if error == Errors.COORDINATOR_LOAD_IN_PROGRESS => tp -> Errors.COORDINATOR_NOT_AVAILABLE
}
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new TxnOffsetCommitResponse(requestThrottleMs, combinedCommitStatus.asJava))
}
if (authorizedTopicCommittedOffsets.isEmpty)
sendResponseCallback(Map.empty)
else {
val offsetMetadata = convertTxnOffsets(authorizedTopicCommittedOffsets.toMap)
groupCoordinator.handleTxnCommitOffsets(
txnOffsetCommitRequest.data.groupId,
txnOffsetCommitRequest.data.producerId,
txnOffsetCommitRequest.data.producerEpoch,
txnOffsetCommitRequest.data.memberId,
Option(txnOffsetCommitRequest.data.groupInstanceId),
txnOffsetCommitRequest.data.generationId,
offsetMetadata,
sendResponseCallback,
requestLocal)
}
}
}
private def convertTxnOffsets(offsetsMap: immutable.Map[TopicPartition, TxnOffsetCommitRequest.CommittedOffset]): immutable.Map[TopicPartition, OffsetAndMetadata] = {
val currentTimestamp = time.milliseconds
offsetsMap.map { case (topicPartition, partitionData) =>
val metadata = if (partitionData.metadata == null) OffsetAndMetadata.NoMetadata else partitionData.metadata
topicPartition -> new OffsetAndMetadata(
offset = partitionData.offset,
leaderEpoch = partitionData.leaderEpoch,
metadata = metadata,
commitTimestamp = currentTimestamp,
expireTimestamp = None)
}
}
def handleDescribeAcls(request: RequestChannel.Request): Unit = {
aclApis.handleDescribeAcls(request)
}
def handleCreateAcls(request: RequestChannel.Request): Unit = {
metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
aclApis.handleCreateAcls(request)
}
def handleDeleteAcls(request: RequestChannel.Request): Unit = {
metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
aclApis.handleDeleteAcls(request)
}
def handleOffsetForLeaderEpochRequest(request: RequestChannel.Request): Unit = {
val offsetForLeaderEpoch = request.body[OffsetsForLeaderEpochRequest]
val topics = offsetForLeaderEpoch.data.topics.asScala.toSeq
// The OffsetsForLeaderEpoch API was initially only used for inter-broker communication and required
// cluster permission. With KIP-320, the consumer now also uses this API to check for log truncation
// following a leader change, so we also allow topic describe permission.
val (authorizedTopics, unauthorizedTopics) =
if (authHelper.authorize(request.context, CLUSTER_ACTION, CLUSTER, CLUSTER_NAME, logIfDenied = false))
(topics, Seq.empty[OffsetForLeaderTopic])
else authHelper.partitionSeqByAuthorized(request.context, DESCRIBE, TOPIC, topics)(_.topic)
val endOffsetsForAuthorizedPartitions = replicaManager.lastOffsetForLeaderEpoch(authorizedTopics)
val endOffsetsForUnauthorizedPartitions = unauthorizedTopics.map { offsetForLeaderTopic =>
val partitions = offsetForLeaderTopic.partitions.asScala.map { offsetForLeaderPartition =>
new EpochEndOffset()
.setPartition(offsetForLeaderPartition.partition)
.setErrorCode(Errors.TOPIC_AUTHORIZATION_FAILED.code)
}
new OffsetForLeaderTopicResult()
.setTopic(offsetForLeaderTopic.topic)
.setPartitions(partitions.toList.asJava)
}
val endOffsetsForAllTopics = new OffsetForLeaderTopicResultCollection(
(endOffsetsForAuthorizedPartitions ++ endOffsetsForUnauthorizedPartitions).asJava.iterator
)
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new OffsetsForLeaderEpochResponse(new OffsetForLeaderEpochResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setTopics(endOffsetsForAllTopics)))
}
def handleAlterConfigsRequest(request: RequestChannel.Request): Unit = {
val original = request.body[AlterConfigsRequest]
val preprocessingResponses = configManager.preprocess(original.data())
val remaining = ConfigAdminManager.copyWithoutPreprocessed(original.data(), preprocessingResponses)
def sendResponse(secondPart: Option[ApiMessage]): Unit = {
secondPart match {
case Some(result: AlterConfigsResponseData) =>
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new AlterConfigsResponse(ConfigAdminManager.reassembleLegacyResponse(
original.data(),
preprocessingResponses,
result).setThrottleTimeMs(requestThrottleMs)))
case _ => handleInvalidVersionsDuringForwarding(request)
}
}
if (remaining.resources().isEmpty) {
sendResponse(Some(new AlterConfigsResponseData()))
} else if ((!request.isForwarded) && metadataSupport.canForward()) {
metadataSupport.forwardingManager.get.forwardRequest(request,
new AlterConfigsRequest(remaining, request.header.apiVersion()),
response => sendResponse(response.map(_.data())))
} else {
sendResponse(Some(processLegacyAlterConfigsRequest(request, remaining)))
}
}
def processLegacyAlterConfigsRequest(
originalRequest: RequestChannel.Request,
data: AlterConfigsRequestData
): AlterConfigsResponseData = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(originalRequest))
val alterConfigsRequest = new AlterConfigsRequest(data, originalRequest.header.apiVersion())
val (authorizedResources, unauthorizedResources) = alterConfigsRequest.configs.asScala.toMap.partition { case (resource, _) =>
resource.`type` match {
case ConfigResource.Type.BROKER_LOGGER =>
throw new InvalidRequestException(s"AlterConfigs is deprecated and does not support the resource type ${ConfigResource.Type.BROKER_LOGGER}")
case ConfigResource.Type.BROKER =>
authHelper.authorize(originalRequest.context, ALTER_CONFIGS, CLUSTER, CLUSTER_NAME)
case ConfigResource.Type.TOPIC =>
authHelper.authorize(originalRequest.context, ALTER_CONFIGS, TOPIC, resource.name)
case rt => throw new InvalidRequestException(s"Unexpected resource type $rt")
}
}
val authorizedResult = zkSupport.adminManager.alterConfigs(authorizedResources, alterConfigsRequest.validateOnly)
val unauthorizedResult = unauthorizedResources.keys.map { resource =>
resource -> configsAuthorizationApiError(resource)
}
val response = new AlterConfigsResponseData()
(authorizedResult ++ unauthorizedResult).foreach { case (resource, error) =>
response.responses().add(new AlterConfigsResourceResponse()
.setErrorCode(error.error.code)
.setErrorMessage(error.message)
.setResourceName(resource.name)
.setResourceType(resource.`type`.id))
}
response
}
def handleAlterPartitionReassignmentsRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
authHelper.authorizeClusterOperation(request, ALTER)
val alterPartitionReassignmentsRequest = request.body[AlterPartitionReassignmentsRequest]
def sendResponseCallback(result: Either[Map[TopicPartition, ApiError], ApiError]): Unit = {
val responseData = result match {
case Right(topLevelError) =>
new AlterPartitionReassignmentsResponseData().setErrorMessage(topLevelError.message).setErrorCode(topLevelError.error.code)
case Left(assignments) =>
val topicResponses = assignments.groupBy(_._1.topic).map {
case (topic, reassignmentsByTp) =>
val partitionResponses = reassignmentsByTp.map {
case (topicPartition, error) =>
new ReassignablePartitionResponse().setPartitionIndex(topicPartition.partition)
.setErrorCode(error.error.code).setErrorMessage(error.message)
}
new ReassignableTopicResponse().setName(topic).setPartitions(partitionResponses.toList.asJava)
}
new AlterPartitionReassignmentsResponseData().setResponses(topicResponses.toList.asJava)
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new AlterPartitionReassignmentsResponse(responseData.setThrottleTimeMs(requestThrottleMs))
)
}
val reassignments = alterPartitionReassignmentsRequest.data.topics.asScala.flatMap {
reassignableTopic => reassignableTopic.partitions.asScala.map {
reassignablePartition =>
val tp = new TopicPartition(reassignableTopic.name, reassignablePartition.partitionIndex)
if (reassignablePartition.replicas == null)
tp -> None // revert call
else
tp -> Some(reassignablePartition.replicas.asScala.map(_.toInt))
}
}.toMap
zkSupport.controller.alterPartitionReassignments(reassignments, sendResponseCallback)
}
def handleListPartitionReassignmentsRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
authHelper.authorizeClusterOperation(request, DESCRIBE)
val listPartitionReassignmentsRequest = request.body[ListPartitionReassignmentsRequest]
def sendResponseCallback(result: Either[Map[TopicPartition, ReplicaAssignment], ApiError]): Unit = {
val responseData = result match {
case Right(error) => new ListPartitionReassignmentsResponseData().setErrorMessage(error.message).setErrorCode(error.error.code)
case Left(assignments) =>
val topicReassignments = assignments.groupBy(_._1.topic).map {
case (topic, reassignmentsByTp) =>
val partitionReassignments = reassignmentsByTp.map {
case (topicPartition, assignment) =>
new ListPartitionReassignmentsResponseData.OngoingPartitionReassignment()
.setPartitionIndex(topicPartition.partition)
.setAddingReplicas(assignment.addingReplicas.toList.asJava.asInstanceOf[java.util.List[java.lang.Integer]])
.setRemovingReplicas(assignment.removingReplicas.toList.asJava.asInstanceOf[java.util.List[java.lang.Integer]])
.setReplicas(assignment.replicas.toList.asJava.asInstanceOf[java.util.List[java.lang.Integer]])
}.toList
new ListPartitionReassignmentsResponseData.OngoingTopicReassignment().setName(topic)
.setPartitions(partitionReassignments.asJava)
}.toList
new ListPartitionReassignmentsResponseData().setTopics(topicReassignments.asJava)
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new ListPartitionReassignmentsResponse(responseData.setThrottleTimeMs(requestThrottleMs))
)
}
val partitionsOpt = listPartitionReassignmentsRequest.data.topics match {
case topics: Any =>
Some(topics.iterator().asScala.flatMap { topic =>
topic.partitionIndexes.iterator().asScala
.map { tp => new TopicPartition(topic.name(), tp) }
}.toSet)
case _ => None
}
zkSupport.controller.listPartitionReassignments(partitionsOpt, sendResponseCallback)
}
private def configsAuthorizationApiError(resource: ConfigResource): ApiError = {
val error = resource.`type` match {
case ConfigResource.Type.BROKER | ConfigResource.Type.BROKER_LOGGER => Errors.CLUSTER_AUTHORIZATION_FAILED
case ConfigResource.Type.TOPIC => Errors.TOPIC_AUTHORIZATION_FAILED
case rt => throw new InvalidRequestException(s"Unexpected resource type $rt for resource ${resource.name}")
}
new ApiError(error, null)
}
def handleIncrementalAlterConfigsRequest(request: RequestChannel.Request): Unit = {
val original = request.body[IncrementalAlterConfigsRequest]
val preprocessingResponses = configManager.preprocess(original.data(),
(rType, rName) => authHelper.authorize(request.context, ALTER_CONFIGS, rType, rName))
val remaining = ConfigAdminManager.copyWithoutPreprocessed(original.data(), preprocessingResponses)
def sendResponse(secondPart: Option[ApiMessage]): Unit = {
secondPart match {
case Some(result: IncrementalAlterConfigsResponseData) =>
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new IncrementalAlterConfigsResponse(ConfigAdminManager.reassembleIncrementalResponse(
original.data(),
preprocessingResponses,
result).setThrottleTimeMs(requestThrottleMs)))
case _ => handleInvalidVersionsDuringForwarding(request)
}
}
if (remaining.resources().isEmpty) {
sendResponse(Some(new IncrementalAlterConfigsResponseData()))
} else if ((!request.isForwarded) && metadataSupport.canForward()) {
metadataSupport.forwardingManager.get.forwardRequest(request,
new IncrementalAlterConfigsRequest(remaining, request.header.apiVersion()),
response => sendResponse(response.map(_.data())))
} else {
sendResponse(Some(processIncrementalAlterConfigsRequest(request, remaining)))
}
}
def processIncrementalAlterConfigsRequest(
originalRequest: RequestChannel.Request,
data: IncrementalAlterConfigsRequestData
): IncrementalAlterConfigsResponseData = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(originalRequest))
val configs = data.resources.iterator.asScala.map { alterConfigResource =>
val configResource = new ConfigResource(ConfigResource.Type.forId(alterConfigResource.resourceType),
alterConfigResource.resourceName)
configResource -> alterConfigResource.configs.iterator.asScala.map {
alterConfig => new AlterConfigOp(new ConfigEntry(alterConfig.name, alterConfig.value),
OpType.forId(alterConfig.configOperation))
}.toBuffer
}.toMap
val (authorizedResources, unauthorizedResources) = configs.partition { case (resource, _) =>
resource.`type` match {
case ConfigResource.Type.BROKER | ConfigResource.Type.BROKER_LOGGER =>
authHelper.authorize(originalRequest.context, ALTER_CONFIGS, CLUSTER, CLUSTER_NAME)
case ConfigResource.Type.TOPIC =>
authHelper.authorize(originalRequest.context, ALTER_CONFIGS, TOPIC, resource.name)
case rt => throw new InvalidRequestException(s"Unexpected resource type $rt")
}
}
val authorizedResult = zkSupport.adminManager.incrementalAlterConfigs(authorizedResources, data.validateOnly)
val unauthorizedResult = unauthorizedResources.keys.map { resource =>
resource -> configsAuthorizationApiError(resource)
}
new IncrementalAlterConfigsResponse(0, (authorizedResult ++ unauthorizedResult).asJava).data()
}
def handleDescribeConfigsRequest(request: RequestChannel.Request): Unit = {
val describeConfigsRequest = request.body[DescribeConfigsRequest]
val (authorizedResources, unauthorizedResources) = describeConfigsRequest.data.resources.asScala.partition { resource =>
ConfigResource.Type.forId(resource.resourceType) match {
case ConfigResource.Type.BROKER | ConfigResource.Type.BROKER_LOGGER =>
authHelper.authorize(request.context, DESCRIBE_CONFIGS, CLUSTER, CLUSTER_NAME)
case ConfigResource.Type.TOPIC =>
authHelper.authorize(request.context, DESCRIBE_CONFIGS, TOPIC, resource.resourceName)
case rt => throw new InvalidRequestException(s"Unexpected resource type $rt for resource ${resource.resourceName}")
}
}
val authorizedConfigs = configHelper.describeConfigs(authorizedResources.toList, describeConfigsRequest.data.includeSynonyms, describeConfigsRequest.data.includeDocumentation)
val unauthorizedConfigs = unauthorizedResources.map { resource =>
val error = ConfigResource.Type.forId(resource.resourceType) match {
case ConfigResource.Type.BROKER | ConfigResource.Type.BROKER_LOGGER => Errors.CLUSTER_AUTHORIZATION_FAILED
case ConfigResource.Type.TOPIC => Errors.TOPIC_AUTHORIZATION_FAILED
case rt => throw new InvalidRequestException(s"Unexpected resource type $rt for resource ${resource.resourceName}")
}
new DescribeConfigsResponseData.DescribeConfigsResult().setErrorCode(error.code)
.setErrorMessage(error.message)
.setConfigs(Collections.emptyList[DescribeConfigsResponseData.DescribeConfigsResourceResult])
.setResourceName(resource.resourceName)
.setResourceType(resource.resourceType)
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new DescribeConfigsResponse(new DescribeConfigsResponseData().setThrottleTimeMs(requestThrottleMs)
.setResults((authorizedConfigs ++ unauthorizedConfigs).asJava)))
}
def handleAlterReplicaLogDirsRequest(request: RequestChannel.Request): Unit = {
val alterReplicaDirsRequest = request.body[AlterReplicaLogDirsRequest]
if (authHelper.authorize(request.context, ALTER, CLUSTER, CLUSTER_NAME)) {
val result = replicaManager.alterReplicaLogDirs(alterReplicaDirsRequest.partitionDirs.asScala)
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new AlterReplicaLogDirsResponse(new AlterReplicaLogDirsResponseData()
.setResults(result.groupBy(_._1.topic).map {
case (topic, errors) => new AlterReplicaLogDirsResponseData.AlterReplicaLogDirTopicResult()
.setTopicName(topic)
.setPartitions(errors.map {
case (tp, error) => new AlterReplicaLogDirsResponseData.AlterReplicaLogDirPartitionResult()
.setPartitionIndex(tp.partition)
.setErrorCode(error.code)
}.toList.asJava)
}.toList.asJava)
.setThrottleTimeMs(requestThrottleMs)))
} else {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
alterReplicaDirsRequest.getErrorResponse(requestThrottleMs, Errors.CLUSTER_AUTHORIZATION_FAILED.exception))
}
}
def handleDescribeLogDirsRequest(request: RequestChannel.Request): Unit = {
val describeLogDirsDirRequest = request.body[DescribeLogDirsRequest]
val (logDirInfos, error) = {
if (authHelper.authorize(request.context, DESCRIBE, CLUSTER, CLUSTER_NAME)) {
val partitions =
if (describeLogDirsDirRequest.isAllTopicPartitions)
replicaManager.logManager.allLogs.map(_.topicPartition).toSet
else
describeLogDirsDirRequest.data.topics.asScala.flatMap(
logDirTopic => logDirTopic.partitions.asScala.map(partitionIndex =>
new TopicPartition(logDirTopic.topic, partitionIndex))).toSet
(replicaManager.describeLogDirs(partitions), Errors.NONE)
} else {
(List.empty[DescribeLogDirsResponseData.DescribeLogDirsResult], Errors.CLUSTER_AUTHORIZATION_FAILED)
}
}
requestHelper.sendResponseMaybeThrottle(request, throttleTimeMs => new DescribeLogDirsResponse(new DescribeLogDirsResponseData()
.setThrottleTimeMs(throttleTimeMs)
.setResults(logDirInfos.asJava)
.setErrorCode(error.code)))
}
def handleCreateTokenRequest(request: RequestChannel.Request): Unit = {
metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val createTokenRequest = request.body[CreateDelegationTokenRequest]
// the callback for sending a create token response
def sendResponseCallback(createResult: CreateTokenResult): Unit = {
trace(s"Sending create token response for correlation id ${request.header.correlationId} " +
s"to client ${request.header.clientId}.")
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
CreateDelegationTokenResponse.prepareResponse(request.context.requestVersion, requestThrottleMs, createResult.error, createResult.owner,
createResult.tokenRequester, createResult.issueTimestamp, createResult.expiryTimestamp, createResult.maxTimestamp, createResult.tokenId,
ByteBuffer.wrap(createResult.hmac)))
}
val ownerPrincipalName = createTokenRequest.data.ownerPrincipalName
val owner = if (ownerPrincipalName == null || ownerPrincipalName.isEmpty) {
request.context.principal
} else {
new KafkaPrincipal(createTokenRequest.data.ownerPrincipalType, ownerPrincipalName)
}
val requester = request.context.principal
if (!allowTokenRequests(request)) {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
CreateDelegationTokenResponse.prepareResponse(request.context.requestVersion, requestThrottleMs,
Errors.DELEGATION_TOKEN_REQUEST_NOT_ALLOWED, owner, requester))
} else if (!owner.equals(requester) && !authHelper.authorize(request.context, CREATE_TOKENS, USER, owner.toString)) {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
CreateDelegationTokenResponse.prepareResponse(request.context.requestVersion, requestThrottleMs,
Errors.DELEGATION_TOKEN_AUTHORIZATION_FAILED, owner, requester))
} else {
val renewerList = createTokenRequest.data.renewers.asScala.toList.map(entry =>
new KafkaPrincipal(entry.principalType, entry.principalName))
if (renewerList.exists(principal => principal.getPrincipalType != KafkaPrincipal.USER_TYPE)) {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
CreateDelegationTokenResponse.prepareResponse(request.context.requestVersion, requestThrottleMs,
Errors.INVALID_PRINCIPAL_TYPE, owner, requester))
}
else {
tokenManager.createToken(
owner,
requester,
renewerList,
createTokenRequest.data.maxLifetimeMs,
sendResponseCallback
)
}
}
}
def handleRenewTokenRequest(request: RequestChannel.Request): Unit = {
metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val renewTokenRequest = request.body[RenewDelegationTokenRequest]
// the callback for sending a renew token response
def sendResponseCallback(error: Errors, expiryTimestamp: Long): Unit = {
trace("Sending renew token response for correlation id %d to client %s."
.format(request.header.correlationId, request.header.clientId))
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new RenewDelegationTokenResponse(
new RenewDelegationTokenResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setErrorCode(error.code)
.setExpiryTimestampMs(expiryTimestamp)))
}
if (!allowTokenRequests(request))
sendResponseCallback(Errors.DELEGATION_TOKEN_REQUEST_NOT_ALLOWED, DelegationTokenManager.ErrorTimestamp)
else {
tokenManager.renewToken(
request.context.principal,
ByteBuffer.wrap(renewTokenRequest.data.hmac),
renewTokenRequest.data.renewPeriodMs,
sendResponseCallback
)
}
}
def handleExpireTokenRequest(request: RequestChannel.Request): Unit = {
metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val expireTokenRequest = request.body[ExpireDelegationTokenRequest]
// the callback for sending a expire token response
def sendResponseCallback(error: Errors, expiryTimestamp: Long): Unit = {
trace("Sending expire token response for correlation id %d to client %s."
.format(request.header.correlationId, request.header.clientId))
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new ExpireDelegationTokenResponse(
new ExpireDelegationTokenResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setErrorCode(error.code)
.setExpiryTimestampMs(expiryTimestamp)))
}
if (!allowTokenRequests(request))
sendResponseCallback(Errors.DELEGATION_TOKEN_REQUEST_NOT_ALLOWED, DelegationTokenManager.ErrorTimestamp)
else {
tokenManager.expireToken(
request.context.principal,
expireTokenRequest.hmac(),
expireTokenRequest.expiryTimePeriod(),
sendResponseCallback
)
}
}
def handleDescribeTokensRequest(request: RequestChannel.Request): Unit = {
val describeTokenRequest = request.body[DescribeDelegationTokenRequest]
// the callback for sending a describe token response
def sendResponseCallback(error: Errors, tokenDetails: List[DelegationToken]): Unit = {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new DescribeDelegationTokenResponse(request.context.requestVersion(), requestThrottleMs, error, tokenDetails.asJava))
trace("Sending describe token response for correlation id %d to client %s."
.format(request.header.correlationId, request.header.clientId))
}
if (!allowTokenRequests(request))
sendResponseCallback(Errors.DELEGATION_TOKEN_REQUEST_NOT_ALLOWED, List.empty)
else if (!config.tokenAuthEnabled)
sendResponseCallback(Errors.DELEGATION_TOKEN_AUTH_DISABLED, List.empty)
else {
val requestPrincipal = request.context.principal
if (describeTokenRequest.ownersListEmpty()) {
sendResponseCallback(Errors.NONE, List())
}
else {
val owners = if (describeTokenRequest.data.owners == null)
None
else
Some(describeTokenRequest.data.owners.asScala.map(p => new KafkaPrincipal(p.principalType(), p.principalName)).toList)
def authorizeToken(tokenId: String) = authHelper.authorize(request.context, DESCRIBE, DELEGATION_TOKEN, tokenId)
def authorizeRequester(owner: KafkaPrincipal) = authHelper.authorize(request.context, DESCRIBE_TOKENS, USER, owner.toString)
def eligible(token: TokenInformation) = DelegationTokenManager
.filterToken(requestPrincipal, owners, token, authorizeToken, authorizeRequester)
val tokens = tokenManager.getTokens(eligible)
sendResponseCallback(Errors.NONE, tokens)
}
}
}
def allowTokenRequests(request: RequestChannel.Request): Boolean = {
val protocol = request.context.securityProtocol
if (request.context.principal.tokenAuthenticated ||
protocol == SecurityProtocol.PLAINTEXT ||
// disallow requests from 1-way SSL
(protocol == SecurityProtocol.SSL && request.context.principal == KafkaPrincipal.ANONYMOUS))
false
else
true
}
def handleElectLeaders(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val electionRequest = request.body[ElectLeadersRequest]
def sendResponseCallback(
error: ApiError
)(
results: Map[TopicPartition, ApiError]
): Unit = {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => {
val adjustedResults = if (electionRequest.data.topicPartitions == null) {
/* When performing elections across all of the partitions we should only return
* partitions for which there was an election or resulted in an error. In other
* words, partitions that didn't need election because they ready have the correct
* leader are not returned to the client.
*/
results.filter { case (_, error) =>
error.error != Errors.ELECTION_NOT_NEEDED
}
} else results
val electionResults = new util.ArrayList[ReplicaElectionResult]()
adjustedResults
.groupBy { case (tp, _) => tp.topic }
.forKeyValue { (topic, ps) =>
val electionResult = new ReplicaElectionResult()
electionResult.setTopic(topic)
ps.forKeyValue { (topicPartition, error) =>
val partitionResult = new PartitionResult()
partitionResult.setPartitionId(topicPartition.partition)
partitionResult.setErrorCode(error.error.code)
partitionResult.setErrorMessage(error.message)
electionResult.partitionResult.add(partitionResult)
}
electionResults.add(electionResult)
}
new ElectLeadersResponse(
requestThrottleMs,
error.error.code,
electionResults,
electionRequest.version
)
})
}
if (!authHelper.authorize(request.context, ALTER, CLUSTER, CLUSTER_NAME)) {
val error = new ApiError(Errors.CLUSTER_AUTHORIZATION_FAILED, null)
val partitionErrors: Map[TopicPartition, ApiError] =
electionRequest.topicPartitions.iterator.map(partition => partition -> error).toMap
sendResponseCallback(error)(partitionErrors)
} else {
val partitions = if (electionRequest.data.topicPartitions == null) {
metadataCache.getAllTopics().flatMap(metadataCache.getTopicPartitions)
} else {
electionRequest.topicPartitions
}
replicaManager.electLeaders(
zkSupport.controller,
partitions,
electionRequest.electionType,
sendResponseCallback(ApiError.NONE),
electionRequest.data.timeoutMs
)
}
}
def handleOffsetDeleteRequest(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val offsetDeleteRequest = request.body[OffsetDeleteRequest]
val groupId = offsetDeleteRequest.data.groupId
if (authHelper.authorize(request.context, DELETE, GROUP, groupId)) {
val topics = offsetDeleteRequest.data.topics.asScala
val authorizedTopics = authHelper.filterByAuthorized(request.context, READ, TOPIC, topics)(_.name)
val topicPartitionErrors = mutable.Map[TopicPartition, Errors]()
val topicPartitions = mutable.ArrayBuffer[TopicPartition]()
for (topic <- topics) {
for (partition <- topic.partitions.asScala) {
val tp = new TopicPartition(topic.name, partition.partitionIndex)
if (!authorizedTopics.contains(topic.name))
topicPartitionErrors(tp) = Errors.TOPIC_AUTHORIZATION_FAILED
else if (!metadataCache.contains(tp))
topicPartitionErrors(tp) = Errors.UNKNOWN_TOPIC_OR_PARTITION
else
topicPartitions += tp
}
}
val (groupError, authorizedTopicPartitionsErrors) = groupCoordinator.handleDeleteOffsets(
groupId, topicPartitions, requestLocal)
topicPartitionErrors ++= authorizedTopicPartitionsErrors
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => {
if (groupError != Errors.NONE)
offsetDeleteRequest.getErrorResponse(requestThrottleMs, groupError)
else {
val topics = new OffsetDeleteResponseData.OffsetDeleteResponseTopicCollection
topicPartitionErrors.groupBy(_._1.topic).forKeyValue { (topic, topicPartitions) =>
val partitions = new OffsetDeleteResponseData.OffsetDeleteResponsePartitionCollection
topicPartitions.forKeyValue { (topicPartition, error) =>
partitions.add(
new OffsetDeleteResponseData.OffsetDeleteResponsePartition()
.setPartitionIndex(topicPartition.partition)
.setErrorCode(error.code)
)
}
topics.add(new OffsetDeleteResponseData.OffsetDeleteResponseTopic()
.setName(topic)
.setPartitions(partitions))
}
new OffsetDeleteResponse(new OffsetDeleteResponseData()
.setTopics(topics)
.setThrottleTimeMs(requestThrottleMs))
}
})
} else {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
offsetDeleteRequest.getErrorResponse(requestThrottleMs, Errors.GROUP_AUTHORIZATION_FAILED))
}
}
def handleDescribeClientQuotasRequest(request: RequestChannel.Request): Unit = {
val describeClientQuotasRequest = request.body[DescribeClientQuotasRequest]
if (!authHelper.authorize(request.context, DESCRIBE_CONFIGS, CLUSTER, CLUSTER_NAME)) {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
describeClientQuotasRequest.getErrorResponse(requestThrottleMs, Errors.CLUSTER_AUTHORIZATION_FAILED.exception))
} else {
metadataSupport match {
case ZkSupport(adminManager, controller, zkClient, forwardingManager, metadataCache) =>
val result = adminManager.describeClientQuotas(describeClientQuotasRequest.filter)
val entriesData = result.iterator.map { case (quotaEntity, quotaValues) =>
val entityData = quotaEntity.entries.asScala.iterator.map { case (entityType, entityName) =>
new DescribeClientQuotasResponseData.EntityData()
.setEntityType(entityType)
.setEntityName(entityName)
}.toBuffer
val valueData = quotaValues.iterator.map { case (key, value) =>
new DescribeClientQuotasResponseData.ValueData()
.setKey(key)
.setValue(value)
}.toBuffer
new DescribeClientQuotasResponseData.EntryData()
.setEntity(entityData.asJava)
.setValues(valueData.asJava)
}.toBuffer
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new DescribeClientQuotasResponse(new DescribeClientQuotasResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setEntries(entriesData.asJava)))
case RaftSupport(_, metadataCache) =>
val result = metadataCache.describeClientQuotas(describeClientQuotasRequest.data())
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => {
result.setThrottleTimeMs(requestThrottleMs)
new DescribeClientQuotasResponse(result)
})
}
}
}
def handleAlterClientQuotasRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val alterClientQuotasRequest = request.body[AlterClientQuotasRequest]
if (authHelper.authorize(request.context, ALTER_CONFIGS, CLUSTER, CLUSTER_NAME)) {
val result = zkSupport.adminManager.alterClientQuotas(alterClientQuotasRequest.entries.asScala,
alterClientQuotasRequest.validateOnly)
val entriesData = result.iterator.map { case (quotaEntity, apiError) =>
val entityData = quotaEntity.entries.asScala.iterator.map { case (key, value) =>
new AlterClientQuotasResponseData.EntityData()
.setEntityType(key)
.setEntityName(value)
}.toBuffer
new AlterClientQuotasResponseData.EntryData()
.setErrorCode(apiError.error.code)
.setErrorMessage(apiError.message)
.setEntity(entityData.asJava)
}.toBuffer
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new AlterClientQuotasResponse(new AlterClientQuotasResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setEntries(entriesData.asJava)))
} else {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
alterClientQuotasRequest.getErrorResponse(requestThrottleMs, Errors.CLUSTER_AUTHORIZATION_FAILED.exception))
}
}
def handleDescribeUserScramCredentialsRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.notYetSupported(request))
val describeUserScramCredentialsRequest = request.body[DescribeUserScramCredentialsRequest]
if (authHelper.authorize(request.context, DESCRIBE, CLUSTER, CLUSTER_NAME)) {
val result = zkSupport.adminManager.describeUserScramCredentials(
Option(describeUserScramCredentialsRequest.data.users).map(_.asScala.map(_.name).toList))
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new DescribeUserScramCredentialsResponse(result.setThrottleTimeMs(requestThrottleMs)))
} else {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
describeUserScramCredentialsRequest.getErrorResponse(requestThrottleMs, Errors.CLUSTER_AUTHORIZATION_FAILED.exception))
}
}
def handleAlterUserScramCredentialsRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val alterUserScramCredentialsRequest = request.body[AlterUserScramCredentialsRequest]
if (!zkSupport.controller.isActive) {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
alterUserScramCredentialsRequest.getErrorResponse(requestThrottleMs, Errors.NOT_CONTROLLER.exception))
} else if (authHelper.authorize(request.context, ALTER, CLUSTER, CLUSTER_NAME)) {
val result = zkSupport.adminManager.alterUserScramCredentials(
alterUserScramCredentialsRequest.data.upsertions().asScala, alterUserScramCredentialsRequest.data.deletions().asScala)
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new AlterUserScramCredentialsResponse(result.setThrottleTimeMs(requestThrottleMs)))
} else {
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
alterUserScramCredentialsRequest.getErrorResponse(requestThrottleMs, Errors.CLUSTER_AUTHORIZATION_FAILED.exception))
}
}
def handleAlterPartitionRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldNeverReceive(request))
val alterPartitionRequest = request.body[AlterPartitionRequest]
authHelper.authorizeClusterOperation(request, CLUSTER_ACTION)
if (!zkSupport.controller.isActive)
requestHelper.sendResponseExemptThrottle(request, alterPartitionRequest.getErrorResponse(
AbstractResponse.DEFAULT_THROTTLE_TIME, Errors.NOT_CONTROLLER.exception))
else
zkSupport.controller.alterPartitions(alterPartitionRequest.data, request.context.apiVersion, alterPartitionResp =>
requestHelper.sendResponseExemptThrottle(request, new AlterPartitionResponse(alterPartitionResp)))
}
def handleUpdateFeatures(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldAlwaysForward(request))
val updateFeaturesRequest = request.body[UpdateFeaturesRequest]
def sendResponseCallback(errors: Either[ApiError, Map[String, ApiError]]): Unit = {
def createResponse(throttleTimeMs: Int): UpdateFeaturesResponse = {
errors match {
case Left(topLevelError) =>
UpdateFeaturesResponse.createWithErrors(
topLevelError,
Collections.emptyMap(),
throttleTimeMs)
case Right(featureUpdateErrors) =>
UpdateFeaturesResponse.createWithErrors(
ApiError.NONE,
featureUpdateErrors.asJava,
throttleTimeMs)
}
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => createResponse(requestThrottleMs))
}
if (!authHelper.authorize(request.context, ALTER, CLUSTER, CLUSTER_NAME)) {
sendResponseCallback(Left(new ApiError(Errors.CLUSTER_AUTHORIZATION_FAILED)))
} else if (!zkSupport.controller.isActive) {
sendResponseCallback(Left(new ApiError(Errors.NOT_CONTROLLER)))
} else if (!config.isFeatureVersioningSupported) {
sendResponseCallback(Left(new ApiError(Errors.INVALID_REQUEST, "Feature versioning system is disabled.")))
} else {
zkSupport.controller.updateFeatures(updateFeaturesRequest, sendResponseCallback)
}
}
def handleDescribeCluster(request: RequestChannel.Request): Unit = {
val describeClusterRequest = request.body[DescribeClusterRequest]
var clusterAuthorizedOperations = Int.MinValue // Default value in the schema
// get cluster authorized operations
if (describeClusterRequest.data.includeClusterAuthorizedOperations) {
if (authHelper.authorize(request.context, DESCRIBE, CLUSTER, CLUSTER_NAME))
clusterAuthorizedOperations = authHelper.authorizedOperations(request, Resource.CLUSTER)
else
clusterAuthorizedOperations = 0
}
val brokers = metadataCache.getAliveBrokerNodes(request.context.listenerName)
val controllerId = metadataCache.getControllerId.getOrElse(MetadataResponse.NO_CONTROLLER_ID)
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs => {
val data = new DescribeClusterResponseData()
.setThrottleTimeMs(requestThrottleMs)
.setClusterId(clusterId)
.setControllerId(controllerId)
.setClusterAuthorizedOperations(clusterAuthorizedOperations)
brokers.foreach { broker =>
data.brokers.add(new DescribeClusterResponseData.DescribeClusterBroker()
.setBrokerId(broker.id)
.setHost(broker.host)
.setPort(broker.port)
.setRack(broker.rack))
}
new DescribeClusterResponse(data)
})
}
def handleEnvelope(request: RequestChannel.Request, requestLocal: RequestLocal): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldNeverReceive(request))
// If forwarding is not yet enabled or this request has been received on an invalid endpoint,
// then we treat the request as unparsable and close the connection.
if (!isForwardingEnabled(request)) {
info(s"Closing connection ${request.context.connectionId} because it sent an `Envelope` " +
"request even though forwarding has not been enabled")
requestChannel.closeConnection(request, Collections.emptyMap())
return
} else if (!request.context.fromPrivilegedListener) {
info(s"Closing connection ${request.context.connectionId} from listener ${request.context.listenerName} " +
s"because it sent an `Envelope` request, which is only accepted on the inter-broker listener " +
s"${config.interBrokerListenerName}.")
requestChannel.closeConnection(request, Collections.emptyMap())
return
} else if (!authHelper.authorize(request.context, CLUSTER_ACTION, CLUSTER, CLUSTER_NAME)) {
requestHelper.sendErrorResponseMaybeThrottle(request, new ClusterAuthorizationException(
s"Principal ${request.context.principal} does not have required CLUSTER_ACTION for envelope"))
return
} else if (!zkSupport.controller.isActive) {
requestHelper.sendErrorResponseMaybeThrottle(request, new NotControllerException(
s"Broker $brokerId is not the active controller"))
return
}
EnvelopeUtils.handleEnvelopeRequest(request, requestChannel.metrics, handle(_, requestLocal))
}
def handleDescribeProducersRequest(request: RequestChannel.Request): Unit = {
val describeProducersRequest = request.body[DescribeProducersRequest]
def partitionError(
topicPartition: TopicPartition,
apiError: ApiError
): DescribeProducersResponseData.PartitionResponse = {
new DescribeProducersResponseData.PartitionResponse()
.setPartitionIndex(topicPartition.partition)
.setErrorCode(apiError.error.code)
.setErrorMessage(apiError.message)
}
val response = new DescribeProducersResponseData()
describeProducersRequest.data.topics.forEach { topicRequest =>
val topicResponse = new DescribeProducersResponseData.TopicResponse()
.setName(topicRequest.name)
val invalidTopicError = checkValidTopic(topicRequest.name)
val topicError = invalidTopicError.orElse {
if (!authHelper.authorize(request.context, READ, TOPIC, topicRequest.name)) {
Some(new ApiError(Errors.TOPIC_AUTHORIZATION_FAILED))
} else if (!metadataCache.contains(topicRequest.name))
Some(new ApiError(Errors.UNKNOWN_TOPIC_OR_PARTITION))
else {
None
}
}
topicRequest.partitionIndexes.forEach { partitionId =>
val topicPartition = new TopicPartition(topicRequest.name, partitionId)
val partitionResponse = topicError match {
case Some(error) => partitionError(topicPartition, error)
case None => replicaManager.activeProducerState(topicPartition)
}
topicResponse.partitions.add(partitionResponse)
}
response.topics.add(topicResponse)
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new DescribeProducersResponse(response.setThrottleTimeMs(requestThrottleMs)))
}
private def checkValidTopic(topic: String): Option[ApiError] = {
try {
Topic.validate(topic)
None
} catch {
case e: Throwable => Some(ApiError.fromThrowable(e))
}
}
def handleDescribeTransactionsRequest(request: RequestChannel.Request): Unit = {
val describeTransactionsRequest = request.body[DescribeTransactionsRequest]
val response = new DescribeTransactionsResponseData()
describeTransactionsRequest.data.transactionalIds.forEach { transactionalId =>
val transactionState = if (!authHelper.authorize(request.context, DESCRIBE, TRANSACTIONAL_ID, transactionalId)) {
new DescribeTransactionsResponseData.TransactionState()
.setTransactionalId(transactionalId)
.setErrorCode(Errors.TRANSACTIONAL_ID_AUTHORIZATION_FAILED.code)
} else {
txnCoordinator.handleDescribeTransactions(transactionalId)
}
// Include only partitions which the principal is authorized to describe
val topicIter = transactionState.topics.iterator()
while (topicIter.hasNext) {
val topic = topicIter.next().topic
if (!authHelper.authorize(request.context, DESCRIBE, TOPIC, topic)) {
topicIter.remove()
}
}
response.transactionStates.add(transactionState)
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new DescribeTransactionsResponse(response.setThrottleTimeMs(requestThrottleMs)))
}
def handleListTransactionsRequest(request: RequestChannel.Request): Unit = {
val listTransactionsRequest = request.body[ListTransactionsRequest]
val filteredProducerIds = listTransactionsRequest.data.producerIdFilters.asScala.map(Long.unbox).toSet
val filteredStates = listTransactionsRequest.data.stateFilters.asScala.toSet
val response = txnCoordinator.handleListTransactions(filteredProducerIds, filteredStates)
// The response should contain only transactionalIds that the principal
// has `Describe` permission to access.
val transactionStateIter = response.transactionStates.iterator()
while (transactionStateIter.hasNext) {
val transactionState = transactionStateIter.next()
if (!authHelper.authorize(request.context, DESCRIBE, TRANSACTIONAL_ID, transactionState.transactionalId)) {
transactionStateIter.remove()
}
}
requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
new ListTransactionsResponse(response.setThrottleTimeMs(requestThrottleMs)))
}
def handleAllocateProducerIdsRequest(request: RequestChannel.Request): Unit = {
val zkSupport = metadataSupport.requireZkOrThrow(KafkaApis.shouldNeverReceive(request))
authHelper.authorizeClusterOperation(request, CLUSTER_ACTION)
val allocateProducerIdsRequest = request.body[AllocateProducerIdsRequest]
if (!zkSupport.controller.isActive)
requestHelper.sendResponseMaybeThrottle(request, throttleTimeMs =>
allocateProducerIdsRequest.getErrorResponse(throttleTimeMs, Errors.NOT_CONTROLLER.exception))
else
zkSupport.controller.allocateProducerIds(allocateProducerIdsRequest.data, producerIdsResponse =>
requestHelper.sendResponseMaybeThrottle(request, throttleTimeMs =>
new AllocateProducerIdsResponse(producerIdsResponse.setThrottleTimeMs(throttleTimeMs)))
)
}
private def updateRecordConversionStats(request: RequestChannel.Request,
tp: TopicPartition,
conversionStats: RecordConversionStats): Unit = {
val conversionCount = conversionStats.numRecordsConverted
if (conversionCount > 0) {
request.header.apiKey match {
case ApiKeys.PRODUCE =>
brokerTopicStats.topicStats(tp.topic).produceMessageConversionsRate.mark(conversionCount)
brokerTopicStats.allTopicsStats.produceMessageConversionsRate.mark(conversionCount)
case ApiKeys.FETCH =>
brokerTopicStats.topicStats(tp.topic).fetchMessageConversionsRate.mark(conversionCount)
brokerTopicStats.allTopicsStats.fetchMessageConversionsRate.mark(conversionCount)
case _ =>
throw new IllegalStateException("Message conversion info is recorded only for Produce/Fetch requests")
}
request.messageConversionsTimeNanos = conversionStats.conversionTimeNanos
}
request.temporaryMemoryBytes = conversionStats.temporaryMemoryBytes
}
private def isBrokerEpochStale(zkSupport: ZkSupport, brokerEpochInRequest: Long): Boolean = {
// Broker epoch in LeaderAndIsr/UpdateMetadata/StopReplica request is unknown
// if the controller hasn't been upgraded to use KIP-380
if (brokerEpochInRequest == AbstractControlRequest.UNKNOWN_BROKER_EPOCH) false
else {
// brokerEpochInRequest > controller.brokerEpoch is possible in rare scenarios where the controller gets notified
// about the new broker epoch and sends a control request with this epoch before the broker learns about it
brokerEpochInRequest < zkSupport.controller.brokerEpoch
}
}
}
object KafkaApis {
// Traffic from both in-sync and out of sync replicas are accounted for in replication quota to ensure total replication
// traffic doesn't exceed quota.
// TODO: remove resolvedResponseData method when sizeOf can take a data object.
private[server] def sizeOfThrottledPartitions(versionId: Short,
unconvertedResponse: FetchResponse,
quota: ReplicationQuotaManager): Int = {
val responseData = new util.LinkedHashMap[TopicIdPartition, FetchResponseData.PartitionData]
unconvertedResponse.data.responses().forEach(topicResponse =>
topicResponse.partitions().forEach(partition =>
responseData.put(new TopicIdPartition(topicResponse.topicId, new TopicPartition(topicResponse.topic(), partition.partitionIndex)), partition)))
FetchResponse.sizeOf(versionId, responseData.entrySet
.iterator.asScala.filter(element => element.getKey.topicPartition.topic != null && quota.isThrottled(element.getKey.topicPartition)).asJava)
}
// visible for testing
private[server] def shouldNeverReceive(request: RequestChannel.Request): Exception = {
new UnsupportedVersionException(s"Should never receive when using a Raft-based metadata quorum: ${request.header.apiKey()}")
}
// visible for testing
private[server] def shouldAlwaysForward(request: RequestChannel.Request): Exception = {
new UnsupportedVersionException(s"Should always be forwarded to the Active Controller when using a Raft-based metadata quorum: ${request.header.apiKey}")
}
private def unsupported(text: String): Exception = {
new UnsupportedVersionException(s"Unsupported when using a Raft-based metadata quorum: $text")
}
private def notYetSupported(request: RequestChannel.Request): Exception = {
notYetSupported(request.header.apiKey().toString)
}
private def notYetSupported(text: String): Exception = {
new UnsupportedVersionException(s"Not yet supported when using a Raft-based metadata quorum: $text")
}
}
