dixingxing0 opened a new issue, #1967:
URL: https://github.com/apache/dubbo-go/issues/1967
**What would you like to be added**:
protoc-gen-dubbo should support optional fields.
We run this command:
`protoc -I ./ AdItemFeature.proto --dubbo_out=plugins=grpc+dubbo:.`
and we meet this error:
```
/usr/bin/make -f /IdeaProjects/feature-service/protobuf/Makefile -C
/IdeaProjects/feature-service/protobuf dubbo-gen
WARNING: Package "github.com/golang/protobuf/protoc-gen-go/generator" is
deprecated.
A future release of golang/protobuf will delete this package,
which has long been excluded from the compatibility promise.
AdItemFeature.proto: is a proto3 file that contains optional fields, but
code generator protoc-gen-dubbo hasn't been updated to support optional fields
in proto3. Please ask the owner of this code generator to support proto3
optional.--dubbo_out:
make: *** [dubbo-gen] Error
```
**Why is this needed**:
In our protobuffer definition, there are lot of optional fields, i think
protoc-gen-dubbo should support them.
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