Validate messages

[JamesNK]

Provide a way to validate messages, similar to ASP.NET Core MVC's model validation - https://docs.microsoft.com/aspnet/core/mvc/models/validation

Potential solution: https://github.com/envoyproxy/protoc-gen-validate. Either code generation of validation, or runtime validation.

[AnthonyGiretti]

I have a temporary solution for now.

I forked a repo and improved it to make efficient validation. It's based on FluentValidation that injects
Validator in the DI and the validation is processed within an interceptor.
The client can get the error list from a strongly-typed model. Works only with gRPC, Have to improve this for gRPC-web.

Hope it could help!

https://github.com/AnthonyGiretti/grpc-aspnetcore-validator

[ansarizafar]

@JamesNK Is there any update on this issue? Code generated validation with https://github.com/envoyproxy/protoc-gen-validate is badly needed.

[JamesNK]

No. This isn't a high priority at the moment.

There is nothing stopping anyone from writing a library that inspects validation options defined in a proto file and uses them to validate Protobuf messages.

[Xaeco]

I’m keen to assist with this issue.

In my Blazor WebAssembly projects I need to be able to validate user input against my proto3 models at runtime. Preferably using the EditForm component and DataAnnotationValidator.

Currently none of the projects I’ve seen work to that degree or they are missing dotnet support.

I haven’t contributed to GitHub repos before so will require some assistance on getting started and would appreciate help planning out what work would be involved.

[AnthonyGiretti]

Hi, I’m writing a client library which has the same behavior as my server validation library based on fluentValidation: https://github.com/AnthonyGiretti/grpc-aspnetcore-validator Keep posted! Anthony Le jeu. 17 déc. 2020 à 13:43, Xaeco <notifications@github.com> a écrit :

I’m keen to assist with this issue. In my Blazor WebAssembly projects I need to be able to validate user input against my proto3 models at runtime. Preferably using the EditForm component and DataAnnotationValidator. Currently none of the projects I’ve seen work to that degree or they are missing dotnet support. I haven’t contributed to GitHub repos before so will require some assistance on getting started and would appreciate help planning out what work would be involved. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#741 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFBX2JZVPO4IMPHC3TYLEQTSVJGOHANCNFSM4KM5TUIQ> .

-- *Anthony Giretti* *Blogger, Speaker | MVP, MCSD* *m:* +1 514 557 1380 <+1+514+557+1380> *s: *anthonygiretti.com *e: *anthony.giretti@gmail.com

[Xaeco]

Thanks @AnthonyGiretti for your response.
I think decorating proto message declarations with validation conditions is a good way forward. Is this your approach?

[AnthonyGiretti]

I define rules on messages with fluentValidation. It’s unit testable. There is no data annotation on messages. Le jeu. 17 déc. 2020 à 19:12, Matthew Hill <notifications@github.com> a écrit :

Thanks @AnthonyGiretti <https://github.com/AnthonyGiretti> for your response. I think decorating proto message declarations with validation conditions is a good way forward. Is this your approach? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#741 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AFBX2J2LRUYURKL6LYCXS5LSVKNATANCNFSM4KM5TUIQ> .

-- *Anthony Giretti* *Blogger, Speaker | MVP, MCSD* *m:* +1 514 557 1380 <+1+514+557+1380> *s: *anthonygiretti.com *e: *anthony.giretti@gmail.com

[leblancmeneses]

One of the benefits of decorating proto message with validation annotations is the metadata will be available to other languages. There is probably already a set of open source annotations where we just need to implement some glue code for .net.

[Xaeco]

As mentioned by @ansarizafar the https://github.com/envoyproxy/protoc-gen-validate repo is a great start. Just need to see if/how it can be extended for asp.net core and this repo.

[ziaulhasanhamim]

any updates on validation support?

[SIGAN]

any update on validation support (8 months later, to keep the issue open)

[dystopiandev]

This really could use standardization.