KEDA operator crashes on nil memory panic if the eventhub connectionstring for Azure Eventhub Scaler contains an invalid character

[christle]

Report

The Azure Eventhub Scaler creates a storage path with url.parse() based on information from an eventhub connection string. If this connection string contains invalid characters like newline, the url.parse raise an error. This error is unhandled, so the operator crashes with a panic.

Invalid characters usually appear if the connectionstring contains an incorrect base64 encoding.

Expected Behavior

the Azure Eventhub Scaler should log an error message, which contains informations about the incorrect connectionstring

Actual Behavior

the keda operator get a panic

Steps to Reproduce the Problem

1. add an Azure Eventhub scaler
2. add an Azure Eventhub connectionstring with a newline character
3. the keda operator crash with a panic

Logs from KEDA operator

No response

KEDA Version

2.7.1

Kubernetes Version

No response

Platform

No response

Scaler Details

Eventhub Scaler

Anything else?

No response

[v-shenoy]

Should this be closed after #3080?

[zroubalik]

Fixed in #3080