Package org.apache.druid.java.util.emitter.core

Class LoggingEmitter

java.lang.Object

org.apache.druid.java.util.emitter.core.LoggingEmitter

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, Emitter

public class LoggingEmitter
extends Object
implements Emitter

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	LoggingEmitter.Level

Constructor Summary

Constructors

Constructor	Description
LoggingEmitter(Logger log, LoggingEmitter.Level level, com.fasterxml.jackson.databind.ObjectMapper jsonMapper)
LoggingEmitter(Logger log, LoggingEmitter.Level level, com.fasterxml.jackson.databind.ObjectMapper jsonMapper, boolean shouldFilterMetrics, String allowedMetricsPath)
LoggingEmitter(LoggingEmitterConfig config, com.fasterxml.jackson.databind.ObjectMapper jsonMapper)

Method Summary

Modifier and Type	Method	Description
void	close()
void	emit(Event event)	Emit an event.
void	flush()
void	start()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

LoggingEmitter

public LoggingEmitter(LoggingEmitterConfig config,
 com.fasterxml.jackson.databind.ObjectMapper jsonMapper)

LoggingEmitter

public LoggingEmitter(Logger log,
 LoggingEmitter.Level level,
 com.fasterxml.jackson.databind.ObjectMapper jsonMapper)

LoggingEmitter

public LoggingEmitter(Logger log,
 LoggingEmitter.Level level,
 com.fasterxml.jackson.databind.ObjectMapper jsonMapper,
 boolean shouldFilterMetrics,
 @Nullable
 String allowedMetricsPath)

Method Details

start

public void start()

Specified by:

start in interface Emitter

emit

public void emit(Event event)

Description copied from interface: Emitter

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.

Specified by:

emit in interface Emitter

flush

public void flush()

Specified by:

flush in interface Emitter

Specified by:

flush in interface Flushable

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface Emitter

toString

public String toString()

Overrides:

toString in class Object