| Interface | Description | 
|---|---|
| IEventLogger | EventLogger interface for logging the event info to a sink like log file or db for inspecting the events via UI for debugging. | 
| Class | Description | 
|---|---|
| ClusterMetricsConsumerExecutor | |
| EventLoggerBolt | |
| FileBasedEventLogger | |
| IEventLogger.EventInfo | A wrapper for the fields that we would log. | 
| LoggingClusterMetricsConsumer | Listens for cluster related metrics, dumps them to log | 
| LoggingMetricsConsumer | Listens for all metrics, dumps them to log | 
| MetricsConsumerBolt | |
| StormMetricsRegistry | |
| SystemBolt | 
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