io.wizzie.normalizer.funcs

Class MapperFunction

java.lang.Object

io.wizzie.normalizer.funcs.MapperFunction

All Implemented Interfaces:

Function<org.apache.kafka.streams.KeyValue<String,Map<String,Object>>>, org.apache.kafka.streams.kstream.KeyValueMapper<String,Map<String,Object>,org.apache.kafka.streams.KeyValue<String,Map<String,Object>>>

Direct Known Subclasses:

ArithmeticMapper, ArrayDecompositionMapper, ClassificationMapper, FieldMapper, FieldTypeConverterMapper, JoinMapper, LogMapper, MaxValueMapper, MessagesMeanRateMapper, MinValueMapper, RegexMapper, RenameMapper, ReplaceMapper, SimpleArrayMapper, SimpleMapper, StringReplaceMapper, StringSplitterMapper, TimeMapper

public abstract class MapperFunction
extends Object
implements Function<org.apache.kafka.streams.KeyValue<String,Map<String,Object>>>, org.apache.kafka.streams.kstream.KeyValueMapper<String,Map<String,Object>,org.apache.kafka.streams.KeyValue<String,Map<String,Object>>>

This class is used implement mapper process where you can transform one message into other

Constructor Summary

Constructors

Constructor and Description
MapperFunction()

Method Summary

Modifier and Type	Method and Description
org.apache.kafka.streams.KeyValue<String,Map<String,Object>>	apply(String key, Map<String,Object> value) Apply mapper function to Key-Value Kafka message
void	init(Map<String,Object> properties, io.wizzie.metrics.MetricsManager metricsManager) Initialize mapper function

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.wizzie.normalizer.funcs.Function

prepare, process, stop

Constructor Detail

MapperFunction

public MapperFunction()

Method Detail

init

public void init(Map<String,Object> properties,
                 io.wizzie.metrics.MetricsManager metricsManager)

Initialize mapper function

Specified by:

init in interface Function<org.apache.kafka.streams.KeyValue<String,Map<String,Object>>>

Parameters:

properties - Properties for mapper function

metricsManager - MetricsManager object for mapper function

apply

public org.apache.kafka.streams.KeyValue<String,Map<String,Object>> apply(String key,
                                                                          Map<String,Object> value)

Apply mapper function to Key-Value Kafka message

Specified by:

apply in interface org.apache.kafka.streams.kstream.KeyValueMapper<String,Map<String,Object>,org.apache.kafka.streams.KeyValue<String,Map<String,Object>>>

Parameters:

key - The key of Kafka message

value - The value of Kafka message

Returns:

A Key-Value object after apply mapper function