using custom pb type for expression error

[mohit nagpal]

trying below for custome pb type for expression does not work

with env creation error: unsupported type: *gatewaypb.NoteRequest

import gatewaypb "gogoproto/xxxxx"

req := gatewaypb.NoteRequest{

Note: &gatewaypb.Note{

Note: &google_protobuf2.StringValue{Value: "noteval"},

},

}

// Step 2: Set up the go-cel environment

env, err := cel.NewEnv(

cel.Types(&gatewaypb.NoteRequest{}, &gatewaypb.Note{}),

cel.Declarations(

decls.NewVar("req", decls.NewObjectType("gatewaypb.NoteRequest")),

),

)

if err != nil {

fmt.Println("env creation error:", err)

return

}

// Step 3: Create and evaluate a go-cel expression

ast, iss := env.Compile(`req.Note.Note.Value == "noteval"`)

if iss.Err() != nil {

fmt.Println("compile error:", iss.Err())

return

}

prg, err := env.Program(ast)

if err != nil {

fmt.Println("program creation error:", err)

return

}

// Evaluate the expression

out, _, err := prg.Eval(map[string]interface{}{

"req": req,

})

if err != nil {

fmt.Println("evaluation error:", err)

return

}

fmt.Println("Evaluation result:", out)

[Tristan Swadell]

Hi Mohit,

Could you provide the error message you're getting? My guess is that `.Value` is getting flagged as not defined since google.protobuf.StringValue is treated like a nullable string rather than a proto object.

-Tristan

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[mohit nagpal]

Error is : 

env creation error:unsupported type: *gatewaypb.AddUserNoteRequest

Thanks,

Mohit Nagpal

 

[Tristan Swadell]

Hi Mohit,

The error message and the test setup don't appear to be quite the same. The type referenced is a gatewaypb.AddUserNoteRequest, but I don't see this declared to CEL. It's also possible that this is a difference between how protobuf-golang handles types and gogoproto does. I think we've seen some compatibility issues in the past with gogoproto, so I'd recommend trying protobuf golang instead.

-Tristan

On Wed, Jul 24, 2024 at 8:51 PM mohit nagpal <mht.n...@gmail.com> wrote:

any clue why type is not getting registered or anything missing in registration.

Thanks,

Mohit Nagpal