Part of the validation code is not generated

[dorlolo]

Description

I am testing the code in the 'example' directory. After using the 'buf generate proto' command, in the 'example.pb.validate.go' file, validation code has been generated for only a few fields. The validation code for fields like 'Id', 'Email', and 'Name' is empty. and the 'Home' field has not generated the primary validation code.

func (m *Person) validate(all bool) error {
	if m == nil {
		return nil
	}

	var errors []error

	// no validation rules for Id

	// no validation rules for Email

	// no validation rules for Name

	if all {
		switch v := interface{}(m.GetHome()).(type) {
		case interface{ ValidateAll() error }:
			if err := v.ValidateAll(); err != nil {
				errors = append(errors, PersonValidationError{
					field:  "Home",
					reason: "embedded message failed validation",
					cause:  err,
				})
			}
		case interface{ Validate() error }:
			if err := v.Validate(); err != nil {
				errors = append(errors, PersonValidationError{
					field:  "Home",
					reason: "embedded message failed validation",
					cause:  err,
				})
			}
		}
	} else if v, ok := interface{}(m.GetHome()).(interface{ Validate() error }); ok {
		if err := v.Validate(); err != nil {
			return PersonValidationError{
				field:  "Home",
				reason: "embedded message failed validation",
				cause:  err,
			}
		}
	}

	if len(errors) > 0 {
		return PersonMultiError(errors)
	}

	return nil
}

this is my buf.gen.yaml :

version: v1
managed:
  enabled: true
  go_package_prefix:
    default: tests.example.v1

plugins:
  - plugin: buf.build/protocolbuffers/go
    out: gen
    opt: paths=source_relative

  - plugin: buf.build/bufbuild/validate-go:v1.0.2
    out: gen
    opt:
      - paths=source_relative

Environment

• Operating System: Windows 11
• Compiler/Toolchain: go version go1.20.7 windows/amd64
• Protobuf Compiler & Version: buf v1.27.1, protoc libprotoc 22.0-rc2
• Protoc-gen-validate Version: 1.0.2
• Protovalidate Version: v1.0.2

TestCode

validatetest.zip

[gopkg-dev]

buf.gen.yaml

version: v1
managed:
  enabled: true
  go_package_prefix:
    default: tests.example.v1

plugins:
  - plugin: buf.build/protocolbuffers/go
    out: gen
    opt: paths=source_relative

protovalidate-go/README.md

Lines 9 to 16 in 60a89b5

	`protovalidate-go` is the Go language implementation
	of [`protovalidate`](https://github.com/bufbuild/protovalidate) designed
	to validate Protobuf messages at runtime based on user-defined validation constraints.
	Powered by Google's Common Expression Language ([CEL](https://github.com/google/cel-spec)), it provides a
	flexible and efficient foundation for defining and evaluating custom validation
	rules.
	The primary goal of `protovalidate` is to help developers ensure data
	consistency and integrity across the network without requiring generated code.

example

https://github.com/bufbuild/protovalidate-go#example

https://github.com/gopkg-demo/protovalidate-go-test

[rodaine]

Hi, @dorlolo! The protovalidate project does not have a code-generation component, the validation rules are determined at runtime via proto reflection by the libraries. The buf.build/bufbuild/validate-go plugin is a generator for protoc-gen-validate which is the predecessor of this project.

The README documentation on protovalidate and protovalidate-go walks through the process of using this project. Let me know if this helps!