rondagostino commented on code in PR #14083:
URL: https://github.com/apache/kafka/pull/14083#discussion_r1298706120
##########
core/src/main/scala/kafka/server/KafkaApis.scala:
##########
@@ -2999,7 +2999,38 @@ class KafkaApis(val requestChannel: RequestChannel,
}
def handleCreateTokenRequest(request: RequestChannel.Request): Unit = {
+ val createTokenRequest = request.body[CreateDelegationTokenRequest]
+
+ val requester = request.context.principal
+ val ownerPrincipalName = createTokenRequest.data.ownerPrincipalName
+ val owner = if (ownerPrincipalName == null || ownerPrincipalName.isEmpty) {
+ request.context.principal
+ } else {
+ new KafkaPrincipal(createTokenRequest.data.ownerPrincipalType,
ownerPrincipalName)
+ }
+ val renewerList =
createTokenRequest.data.renewers.asScala.toList.map(entry =>
+ new KafkaPrincipal(entry.principalType, entry.principalName))
+
+ 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 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 {
+ maybeForwardToController(request, handleCreateTokenRequestZk)
+ }
+ }
+
+ def handleCreateTokenRequestZk(request: RequestChannel.Request): Unit = {
Review Comment:
I wonder if this is a broader problem. Are there other RPCs that mutate
Zookeeper that need to check that they are the active controller when migration
is enabled? It is likely a short window of time, but there does seem to be a
possibility that an RPC could make it to a broker and end up mutating Zookeeper
when in fact the active controller is a KRaft controller. @mumrah WDYT?
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