KafkaSinkCluster - routing error handling #1659
Merged
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The kafka cluster has a lot of state that shotover must keep track of for routing purposes.
This includes things like which brokers are holding which partitions.
Currently shotover populates its internal records of this state but it has no way to invalidate these records.
This PR implements this missing invalidation.
To handle changes to the cluster we need to handle routing errors as these indicate that the cluster has changed.
This PR handles the 3 kinds of routing errors as follows:
This PR ensures that every request type that we perform routing also has a response handler that invalidates the routing state when we get a routing error.