govalidator VS validator

If you just want to assert that certain strings are convertible into certain types, https://github.com/asaskevich/govalidator contains a lot of handy functions to do just that.

Input check by go-playground/validator

Thanks, it basically bunch of battle-tested tools like viper, defaults, validators put together

Gin uses go-playground/validator/v10 for validation. Check the full docs on tags usage here.

I am using this validator: https://github.com/go-playground/validator

and gRPC CreateOrder handler does the same as http handler, validate request and call command. For validation used validator because of implements value validations for structs and individual fields based on tags.

We need to use the binding struct tag to define our validation rules inside the PrintJob struct. Gin uses go-playground/validator for the internal binding validator implementation. The above validation definition accepts inputs based on the following rules:

A different language, most likely. I'd use Python for this if the work being done isn't too CPU-intensive and I can afford to make big tradeoffs.

If you want to do data validation like this but for something with better performance while still retaining the benefits of a high-level GC'd language, then I'd try something like https://github.com/go-playground/validator for Go.

Go Validator

And in golang we have some libraries that help us with this purpose and in this article we are going to use the validator library, which besides being perhaps the most popular, is the one that contains a good number of resources for us to learn on the internet.

I'm actually not familiar with this style of decoding, sorry. But my point still stands. Assuming you can successfully decode the data from the request into the struct, you need to have the struct set up in a way that will allow https://github.com/go-playground/validator to validate it. I strongly recommend using `*bool` for your use case: