ParameterToSet Feature?

[Sharon Lin]

Hi all,

I have been using Yamcs and have seen two conversations about the XTCE ParameterToSet tag. Are there any plans of implementing this in Yamcs sometime? It would be quite useful to have for implementing a command transaction id that is used to match responses, at least in our case. Is there a different way to go about this in the meantime?

Thanks,

Sharon

[Nicolae Mihalache]

The way some command verifiers work is to set the value of a command history parameters in a custom command post-processor. Then a verifier can use it to match command responses.

We may implement the ParameterToSet option at some point but I see an issue with it being used the way you propose: if you have two pending commands both setting the same parameter, they will overwrite each other's value.

Unless we do a trick and set a command history parameter  similarly with what the post-processors do - those parameters are contextualized to the particular command sent so multiple of them can coexist in parallel. 

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