Emitter (druid-processing 30.0.1 API)

All Superinterfaces:

AutoCloseable, Closeable, Flushable

All Known Implementing Classes:

ComposingEmitter, HttpPostEmitter, LoggingEmitter, NoopEmitter, ParametrizedUriEmitter, ServiceEmitter, SwitchingEmitter
```
public interface Emitter
extends Closeable, Flushable
```

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void close()
  
  void emit(Event event)
  Emit an event.
  
  void flush()
  
  void start()

- Method Detail
  - start
```
void start()
```
  - emit
```
void emit(Event event)
```
    Emit an event. This method must not throw exceptions or block. If an implementation receives too many events and internal queues fill up, it should drop events rather than blocking or consuming excessive memory. If an implementation receives input it considers to be invalid, or has an internal problem, it should deal with that by logging a warning rather than throwing an exception. Implementations that log warnings should consider throttling warnings to avoid excessive logs, since a busy Druid cluster can emit a high volume of metric events.
  - flush
```
void flush()
    throws IOException
```
    Specified by:
    
    flush in interface Flushable
    
    Throws:
    
    IOException
  - close
```
void close()
    throws IOException
```
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Closeable
    
    Throws:
    
    IOException