org.apache.kafka.streams.processor

Class WallclockTimestampExtractor

java.lang.Object

org.apache.kafka.streams.processor.WallclockTimestampExtractor

All Implemented Interfaces:

TimestampExtractor

public class WallclockTimestampExtractor
extends java.lang.Object
implements TimestampExtractor

Retrieves current wall clock timestamps as System.currentTimeMillis(). Using this extractor effectively provides processing-time semantics. If you need event-time semantics, use ConsumerRecordTimestampExtractor with built-in CreateTime or LogAppendTime timestamp (see KIP-32: Add timestamps to Kafka message for details).

Constructor Summary

Constructors

Constructor and Description
WallclockTimestampExtractor()

Method Summary

Methods

Modifier and Type	Method and Description
long	extract(org.apache.kafka.clients.consumer.ConsumerRecord<java.lang.Object,java.lang.Object> record) Return the current wall clock time as timestamp.

Methods inherited from class java.lang.Object

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

Constructor Detail

WallclockTimestampExtractor

public WallclockTimestampExtractor()

Method Detail

extract

public long extract(org.apache.kafka.clients.consumer.ConsumerRecord<java.lang.Object,java.lang.Object> record)

Return the current wall clock time as timestamp.

Specified by:

extract in interface TimestampExtractor

Parameters:

record - a data record

Returns:

the current wall clock time, expressed in milliseconds since midnight, January 1, 1970 UTC