Interface PubrelOutboundInterceptor
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- 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 PubrelOutboundInterceptor extends Interceptor
Interface for the outbound PUBREL 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
onOutboundPubrel(PubrelOutboundInput, PubrelOutboundOutput)
throws an exception or a call toPubrelOutboundOutput.async(Duration)
times out withTimeoutFallback.FAILURE
, HiveMQ will ignore this interceptor and will:- Log the exception
- Revert the changes to the
ModifiablePubrelPacket
made by the interceptor - Call the next
PubrelOutboundInterceptor
or send the PUBREL to the client if no interceptor is left
- Since:
- 4.3.0, CE 2020.1
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description void
onOutboundPubrel(@NotNull PubrelOutboundInput pubrelOutboundInput, @NotNull PubrelOutboundOutput pubrelOutboundOutput)
When aPubrelOutboundInterceptor
is set through any extension, this method gets called for every outgoing PUBREL packet for any MQTT client.
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Method Detail
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onOutboundPubrel
void onOutboundPubrel(@NotNull PubrelOutboundInput pubrelOutboundInput, @NotNull PubrelOutboundOutput pubrelOutboundOutput)
When aPubrelOutboundInterceptor
is set through any extension, this method gets called for every outgoing PUBREL packet for any MQTT client.When the extension is enabled after HiveMQ is already running, this method will also be called for future PUBRELs for clients that are already connected.
- Parameters:
pubrelOutboundInput
- ThePubrelOutboundInput
parameter.pubrelOutboundOutput
- ThePubrelOutboundOutput
parameter.- Since:
- 4.3.0, CE 2020.1
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