Package io.camunda.zeebe.engine.processing.streamprocessor

Class ProcessingStateMachine

java.lang.Object

io.camunda.zeebe.engine.processing.streamprocessor.ProcessingStateMachine

public final class ProcessingStateMachine
extends Object

Represents the processing state machine, which is executed on normal processing.

 +-----------------+             +--------------------+
 |                 |             |                    |      exception
 | readNextEvent() |------------>|   processEvent()   |------------------+
 |                 |             |                    |                  v
 +-----------------+             +--------------------+            +---------------+
           ^                             |                         |               |------+
           |                             |         +-------------->|   onError()   |      | exception
           |                             |         |  exception    |               |<-----+
           |                     +-------v-------------+           +---------------+
           |                     |                     |                 |
           |                     |    writeEvent()     |                 |
           |                     |                     |<----------------+
 +----------------------+        +---------------------+
 |                      |                 |
 | executeSideEffects() |                 v
 |                      |       +----------------------+
 +----------------------+       |                      |
           ^                    |     updateState()    |
           +--------------------|                      |
                                +----------------------+
                                       ^      |
                                       |      | exception
                                       |      |
                                    +---------v----+
                                    |              |
                                    |   onError()  |
                                    |              |
                                    +--------------+
                                       ^     |
                                       |     |  exception
                                       +-----+

 

Constructor Summary

Constructors

Constructor	Description
ProcessingStateMachine(ProcessingContext context, BooleanSupplier shouldProcessNext)

Method Summary

Modifier and Type	Method	Description
long	getLastSuccessfulProcessedEventPosition()
long	getLastWrittenEventPosition()
boolean	isMakingProgress()
void	setSideEffectProducer(SideEffectProducer sideEffectProducer)
void	startProcessing(long lastProcessedPosition)

Methods inherited from class java.lang.Object

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

Constructor Detail

ProcessingStateMachine

public ProcessingStateMachine(ProcessingContext context,
                              BooleanSupplier shouldProcessNext)

Method Detail

setSideEffectProducer

public void setSideEffectProducer(SideEffectProducer sideEffectProducer)

getLastSuccessfulProcessedEventPosition

public long getLastSuccessfulProcessedEventPosition()

getLastWrittenEventPosition

public long getLastWrittenEventPosition()

isMakingProgress

public boolean isMakingProgress()

startProcessing

public void startProcessing(long lastProcessedPosition)