Package io.github.javactrl.kafka

Class WorkflowProcessor

java.lang.Object

io.github.javactrl.kafka.WorkflowProcessor

All Implemented Interfaces:

org.apache.kafka.streams.processor.api.Processor<String,String,String,String>

public class WorkflowProcessor
extends Object
implements org.apache.kafka.streams.processor.api.Processor<String,String,String,String>

This is the implementation of Apache Kafka Streams org.apache.kafka.streams.processor.api.Processor This Processor expects a single source with its key and value strings. And key-value store (which is called "store") for storing the workflow's state. It's recommended to use WorkflowProcessorSupplier, which already adds a store. The store must have string keys and byte[] values. Each sink to which the workflow writes must be added as a sink to this Processor.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	NEW_THREAD_PREFIX	A prefix for messages on resumption thread which starts a new worklow

Constructor Summary

Constructors

Constructor	Description
WorkflowProcessor(Workflow workflow)	Constructor

Method Summary

Modifier and Type	Method	Description
void	init(org.apache.kafka.streams.processor.api.ProcessorContext<String,String> context)
void	process(org.apache.kafka.streams.processor.api.Record<String,String> record)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.kafka.streams.processor.api.Processor

close

Field Details

NEW_THREAD_PREFIX

public static final String NEW_THREAD_PREFIX

A prefix for messages on resumption thread which starts a new worklow

See Also:

• Constant Field Values

Constructor Details

WorkflowProcessor

public WorkflowProcessor(Workflow workflow)

Constructor

Parameters:

workflow - the workflow function to run on this Processor

Method Details

init

public void init(org.apache.kafka.streams.processor.api.ProcessorContext<String,String> context)

Specified by:

init in interface org.apache.kafka.streams.processor.api.Processor<String,String,String,String>

process

public void process(org.apache.kafka.streams.processor.api.Record<String,String> record)

Specified by:

process in interface org.apache.kafka.streams.processor.api.Processor<String,String,String,String>