We’re using `wire` to generate Kotlin classes fro...

# squarelibraries

[Yannick Pulver]

We’re using wire to generate Kotlin classes from proto in our KMP project. We got this construct to pass in Uuid’s:

message UuidValue {
  string value = 1;
}

Is there a way to parse this construct to kotlin.uuid.Uuid (or similar)?. Mainly to prevent saving non-valid uuid’s. I saw the option to pass in a schemaHandlerFactoryClass, but adapting the default Kotlin Proto Parser might not be straightforward (maybe not recommended?)

[Benoit Quenaudon]

There's no way right now to do so.
With some plumberies, you could write a specific schema handler only for this type and leave the rest to Wire

[Benoit Quenaudon]

I'm actually not sure it would work but I'm thinking you could do something like

wire {
  custom {
    // This one would only generate the message for Uuid and claim it so that the other targets don't generate it
  }
  kotlin {
    // Generates the rest. Not sure how it would know to use the right class when a field is of type `UuidValue`
  }
}

[Yannick Pulver]

got it, thanks. I’ll have a look If I can get something to work

[jw]

It would be more efficient to encode a UUID as two 64-bit uints

[jw]

The string form is a human-readable version of that 128-bit number, but you should not store or transfer a UUID in that form

[Yannick Pulver]

good input, thanks!