junrao commented on code in PR #14767:
URL: https://github.com/apache/kafka/pull/14767#discussion_r1410140939
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core/src/main/scala/kafka/server/KafkaApis.scala:
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@@ -3697,16 +3698,60 @@ class KafkaApis(val requestChannel: RequestChannel,
CompletableFuture.completedFuture[Unit](())
}
- // Just a place holder for now.
def handleGetTelemetrySubscriptionsRequest(request: RequestChannel.Request):
Unit = {
- requestHelper.sendMaybeThrottle(request,
request.body[GetTelemetrySubscriptionsRequest].getErrorResponse(Errors.UNSUPPORTED_VERSION.exception))
- CompletableFuture.completedFuture[Unit](())
+ val subscriptionRequest = request.body[GetTelemetrySubscriptionsRequest]
+
+ if (ClientMetricsReceiverPlugin.instance.isEmpty) {
+ info("Received get telemetry client request, no metrics receiver plugin
configured or running with ZK")
+ requestHelper.sendResponseMaybeThrottle(request, requestThrottleMs =>
+ subscriptionRequest.getErrorResponse(requestThrottleMs,
Errors.UNSUPPORTED_VERSION.exception))
Review Comment:
@apoorvmittal10 : ApiVersionResponse is defined to include all new types of
requests supported on the server. So, there is no need to have a separate KIP.
There is no need to add clientTelemetryEnabled in ApiVersionResponse. If
clientTelemetryEnabled is false on the server, we can just exclude telemetry
related API keys from ApiVersionResponse.
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