grpc error

https://github.com/grpc-ecosystem/grpc-gateway/blob/v1.14.8/runtime/errors.go

import (
“google.golang.org/grpc/codes”
“google.golang.org/grpc/status”
….
)

return nil, status.Error(codes.PermissionDenied, “PERMISSION_DENIED_TEXT”)

// client
assignvar, err := s.MyFunctionCall(ctx, …)
if err != nil {
if e, ok := status.FromError(err); ok {
switch e.Code() {
case codes.PermissionDenied:
fmt.Println(e.Message()) // this will print PERMISSION_DENIED_TEST
case codes.Internal:
fmt.Println(“Has Internal Error”)
case codes.Aborted:
fmt.Println(“gRPC Aborted the call”)
default:
fmt.Println(e.Code(), e.Message())
}
}
else {
fmt.Printf(“not able to parse error returned %v”, err)
}
}

https://stackoverflow.com/questions/52969205/how-to-assert-grpc-error-codes-client-side-in-go/52972944

https://diabloneo.github.io/2018/12/10/golang-grpc-error-code/

https://jbrandhorst.com/post/grpc-errors/