Package io.fluxcapacitor.javaclient.publishing

Interface DispatchInterceptor

All Known Implementing Classes:

AdhocDispatchInterceptor, AuthenticatingInterceptor, CorrelatingInterceptor, DataProtectionInterceptor, MessageRoutingInterceptor, SchedulingInterceptor, WebResponseCompressingInterceptor, WebsocketResponseInterceptor

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface DispatchInterceptor

Mechanism that enables modification of a message before it is dispatched to local handlers or Flux Capacitor. Also can be used to monitor outgoing messages or block message publication altogether.

Field Summary

Fields

Modifier and Type	Field	Description
static final DispatchInterceptor	noOp

Method Summary

Modifier and Type	Method	Description
default DispatchInterceptor	andThen(DispatchInterceptor nextInterceptor)
Message	interceptDispatch(Message message, MessageType messageType)	Intercepts the publication of a message.
default SerializedMessage	modifySerializedMessage(SerializedMessage serializedMessage, Message message, MessageType messageType)	Enables modification of the SerializedMessage before it is published.

Field Details

noOp

static final DispatchInterceptor noOp

Method Details

interceptDispatch

Message interceptDispatch(Message message,
 MessageType messageType)

Intercepts the publication of a message. Implementers can use this to modify the contents of a message or block the publication altogether.

Return null or throw an exception to prevent publication of the message.

modifySerializedMessage

default SerializedMessage modifySerializedMessage(SerializedMessage serializedMessage,
 Message message,
 MessageType messageType)

Enables modification of the SerializedMessage before it is published.

This method is typically invoked by message gateways right before publication of a message (so after interceptDispatch(io.fluxcapacitor.javaclient.common.Message, io.fluxcapacitor.common.MessageType) is invoked).

Although message publication is stopped when null is returned or an exception is thrown, it is preferable to use interceptDispatch(io.fluxcapacitor.javaclient.common.Message, io.fluxcapacitor.common.MessageType) for that.

andThen

default DispatchInterceptor andThen(DispatchInterceptor nextInterceptor)