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eclipse-uprotocol / up-spec

uProtocol Specifications
Apache License 2.0
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Usefulness of the _PENDING states #189

Closed AnotherDaniel closed 2 months ago

AnotherDaniel commented 2 months ago

Implementing test scenarios for my fledgling usubscription-rust implementation, I've run into meaning-of-life questions regarding the SUBSCRIBED_PENDING und UNSUBSCRIBED_PENDING States.

I get where the idea came from - i.e. have some interactivity/liveliness to show during a remote-topic subscription process.

But: what is the actual value of these states? What would any client really do with the _PENDING information? I mean, a subscribing client cares about whether his (un)subscription request went through ok nor not ok. The _PENDING states really don't do anything to help with that, do they?

Is there a good reason that I'm missing? Or might it be an opportunity to simplify things a bit?

AnotherDaniel commented 2 months ago

Apparently (takeaeay from community call), the _PENDING states are especially needed in vehicle-cloud scenarios, and will not go away. Closing this...