Package io.fluxcapacitor.javaclient.tracking

Class DefaultTracking

java.lang.Object

io.fluxcapacitor.javaclient.tracking.DefaultTracking

All Implemented Interfaces:

Tracking, AutoCloseable

public class DefaultTracking
extends Object
implements Tracking

Default implementation of the Tracking interface that coordinates message tracking for a specific MessageType.

This class is responsible for:

• Assigning handler objects to appropriate ConsumerConfigurations based on declared filters
• Creating and managing Tracker instances for those consumers and their associated topics
• Ensuring messages are deserialized, dispatched, and (if applicable) responded to with proper error handling
• Invoking handlers using the provided HandlerFactory and HandlerInvoker
• Integrating with ResultGateway to send back command/query/web responses when needed

Supports per-consumer batch interceptors and general batch processing logic, including:

• Functional and technical exception management with retry hooks
• Tracking exclusivity to prevent handlers from being assigned to multiple consumers simultaneously
• Internal shutdown coordination and pending message flushes via close()

Typical Usage

This class is used internally when starting a FluxCapacitor.registerHandlers(List) invocation for a given MessageType, and typically shouldn't be used directly by application developers.

See Also:

• Tracking
• ConsumerConfiguration
• Tracker
• ResultGateway

Constructor Summary

Constructors

Constructor	Description
DefaultTracking()

Method Summary

Modifier and Type	Method	Description
void	close()	Shuts down all started trackers and waits briefly for asynchronous results (e.g. command responses) to complete.
protected Consumer<List<SerializedMessage>>	createConsumer(ConsumerConfiguration config, List<Handler<DeserializingMessage>> handlers)
protected Optional<HandlerInvoker>	getInvoker(DeserializingMessage message, Handler<DeserializingMessage> handler, ConsumerConfiguration config)
protected Object	handle(DeserializingMessage message, HandlerInvoker h, Handler<DeserializingMessage> handler, ConsumerConfiguration config)
protected Object	processError(Throwable e, DeserializingMessage message, HandlerInvoker h, Handler<DeserializingMessage> handler, ConsumerConfiguration config)
protected void	reportResult(Object result, HandlerInvoker h, DeserializingMessage message, ConsumerConfiguration config)
protected boolean	shouldSendResponse(HandlerInvoker invoker, DeserializingMessage request, Object result, ConsumerConfiguration config)
Registration	start(FluxCapacitor fluxCapacitor, List<?> handlers)	Starts tracking by assigning the given handlers to configured consumers and creating topic-specific or shared trackers.
protected Registration	startTracking(ConsumerConfiguration configuration, List<Handler<DeserializingMessage>> handlers, FluxCapacitor fluxCapacitor)
protected void	stopTracker(DeserializingMessage message, Handler<DeserializingMessage> handler, Throwable e)
protected void	tryHandle(DeserializingMessage message, Handler<DeserializingMessage> handler, ConsumerConfiguration config, boolean reportResult)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.fluxcapacitor.javaclient.tracking.Tracking

start

Constructor Details

DefaultTracking

public DefaultTracking()

Method Details

start

public Registration start(FluxCapacitor fluxCapacitor,
 List<?> handlers)

Starts tracking by assigning the given handlers to configured consumers and creating topic-specific or shared trackers.

Throws a TrackingException if handlers can't be matched to consumers or if a consumer has already been started previously.

Specified by:

start in interface Tracking

Parameters:

fluxCapacitor - the owning FluxCapacitor instance

handlers - the handler instances to assign and activate

Returns:

a Registration that can be used to stop all created trackers

Throws:

TrackingException - if no consumer is found for a handler or if tracking has already been started

startTracking

protected Registration startTracking(ConsumerConfiguration configuration,
 List<Handler<DeserializingMessage>> handlers,
 FluxCapacitor fluxCapacitor)

createConsumer

protected Consumer<List<SerializedMessage>> createConsumer(ConsumerConfiguration config,
 List<Handler<DeserializingMessage>> handlers)

tryHandle

protected void tryHandle(DeserializingMessage message,
 Handler<DeserializingMessage> handler,
 ConsumerConfiguration config,
 boolean reportResult)

getInvoker

protected Optional<HandlerInvoker> getInvoker(DeserializingMessage message,
 Handler<DeserializingMessage> handler,
 ConsumerConfiguration config)

handle

protected Object handle(DeserializingMessage message,
 HandlerInvoker h,
 Handler<DeserializingMessage> handler,
 ConsumerConfiguration config)

processError

protected Object processError(Throwable e,
 DeserializingMessage message,
 HandlerInvoker h,
 Handler<DeserializingMessage> handler,
 ConsumerConfiguration config)

reportResult

protected void reportResult(Object result,
 HandlerInvoker h,
 DeserializingMessage message,
 ConsumerConfiguration config)

shouldSendResponse

protected boolean shouldSendResponse(HandlerInvoker invoker,
 DeserializingMessage request,
 Object result,
 ConsumerConfiguration config)

stopTracker

protected void stopTracker(DeserializingMessage message,
 Handler<DeserializingMessage> handler,
 Throwable e)

close

public void close()

Shuts down all started trackers and waits briefly for asynchronous results (e.g. command responses) to complete.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Tracking