Package com.hivemq.extension.sdk.api.interceptor.pubrec

Interface PubrecInboundInterceptor

All Superinterfaces:

Interceptor

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 PubrecInboundInterceptor
extends Interceptor

Interface for the inbound PUBREC interception.

Interceptors are always called by the same Thread for all messages from the same client.

If the same instance is shared between multiple clients it can be called in different Threads and must therefore be thread-safe.

When the method onInboundPubrec(PubrecInboundInput, PubrecInboundOutput) throws an exception or a call to PubrecInboundOutput.async(Duration) times out with TimeoutFallback.FAILURE, HiveMQ will ignore this interceptor and will:

1. Log the exception
2. Revert the changes to the ModifiablePubrecPacket made by the interceptor
3. Call the next PubrecInboundInterceptor or send the PUBREC to the server if no interceptor is left

Since:

4.3.0, CE 2020.1

Method Summary

Modifier and Type	Method	Description
void	onInboundPubrec(@NotNull PubrecInboundInput pubrecInboundInput, @NotNull PubrecInboundOutput pubrecInboundOutput)	When a PubrecInboundInterceptor is set through any extension, this method gets called for every inbound PUBREC packet from any MQTT client.

Method Details

onInboundPubrec

void onInboundPubrec(@NotNull PubrecInboundInput pubrecInboundInput, @NotNull PubrecInboundOutput pubrecInboundOutput)

When a PubrecInboundInterceptor is set through any extension, this method gets called for every inbound PUBREC packet from any MQTT client.

When the extension is enabled after HiveMQ is already running, this method will also be called for future PUBRECs of clients that are already connected.

Parameters:

pubrecInboundInput - The PubrecInboundInput parameter.

pubrecInboundOutput - The PubrecInboundOutput parameter.

Since:

4.3.0, CE 2020.1