Description
Server side metrics registered via the Yammer library are currently exposed via the KafkaMetricsReporter interface. This is configured by setting kafka.metrics.reporters in the server configuration.
However the interface is defined in Scala in the core module so it is not part of the public API. This API also assumes implementations can access KafkaYammerMetrics.defaultRegistry(), which is also not part of the public API, in order to report metrics.
Also this API should support reconfigurable configurations.