On Sat, 2021-05-15 at 04:47 -0700, cpu...@gmail.com wrote:
> In my local code, I'm using things like
>
> if errors.Is(err, api.ErrMustRetry) { ... }
>
> How would I achieve the same on errors returned by the gRCP
> interface? I've noticed these are wrapped:
>
> rpc error: code = Unknown desc = must retry rpc error: code = Unknown
> desc = must retry
>
> I assume the errors package won't work here as type information is
> not carried across gRPC: What is the best practice here: unwrap the
> root error from the RPC result (how) and perform string comparison?
>

There is the status package which provides tools for examining the gRPC
errors, https://pkg.go.dev/google.golang.org/grpc/status.


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