io.wizzie.normalizer.funcs.impl

Class DiffCounterStoreMapper

java.lang.Object

io.wizzie.normalizer.funcs.MapperStoreFunction

io.wizzie.normalizer.funcs.impl.DiffCounterStoreMapper

All Implemented Interfaces:

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

public class DiffCounterStoreMapper
extends MapperStoreFunction

Constructor Summary

Constructors

Constructor and Description
DiffCounterStoreMapper()

Method Summary

Modifier and Type	Method and Description
void	prepare(Map<String,Object> properties, io.wizzie.metrics.MetricsManager metricsManager) Initialize function, this method is implemented by the users to for example: initiate variables, load config, open DB connections.
org.apache.kafka.streams.KeyValue<String,Map<String,Object>>	process(String key, Map<String,Object> value) Main logic of function
void	stop() Stop function, this method is implemented by the users to for example: close DB connection
String	toString()
org.apache.kafka.streams.KeyValue<String,Map<String,Object>>	window(long timestamp) This method allow implement window calls

Methods inherited from class io.wizzie.normalizer.funcs.MapperStoreFunction

close, getAvailableStores, getStore, init, init, punctuate, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

DiffCounterStoreMapper

public DiffCounterStoreMapper()

Method Detail

prepare

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

Description copied from interface: Function

Initialize function, this method is implemented by the users to for example: initiate variables, load config, open DB connections.

Parameters:

properties - Properties for function

metricsManager - MetricsManager object for function

process

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

Description copied from interface: Function

Main logic of function

Parameters:

key - The key of Kafka message

value - The value of Kafka message

Returns:

Returned value

stop

public void stop()

Description copied from interface: Function

Stop function, this method is implemented by the users to for example: close DB connection

toString

public String toString()

Overrides:

toString in class Object

window

public org.apache.kafka.streams.KeyValue<String,Map<String,Object>> window(long timestamp)

Description copied from class: MapperStoreFunction

This method allow implement window calls

Specified by:

window in class MapperStoreFunction

Parameters:

timestamp - where the window must be called

Returns:

A messages that are added to the current stream