/
md.go
60 lines (52 loc) · 1.27 KB
/
md.go
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package auth
import (
"context"
"github.com/golang/protobuf/jsonpb"
pb "github.com/omecodes/store/gen/go/proto"
"google.golang.org/grpc/metadata"
)
const (
mdUser = "auth.user"
mdApp = "auth.app"
)
func ContextWithMeta(parent context.Context) (context.Context, error) {
md := metadata.MD{}
marshaler := &jsonpb.Marshaler{EnumsAsInts: true}
user := Get(parent)
if user != nil {
encoded, err := marshaler.MarshalToString(user)
if err != nil {
return nil, err
}
md.Set(mdUser, encoded)
}
client := App(parent)
if client != nil {
encoded, err := marshaler.MarshalToString(user)
if err != nil {
return nil, err
}
md.Set(mdApp, encoded)
}
return metadata.NewOutgoingContext(parent, md), nil
}
func ParseMetaInNewContext(ctx context.Context) (context.Context, error) {
md, ok := metadata.FromIncomingContext(ctx)
if ok {
user := &pb.User{}
userValues := md.Get(mdUser)
err := jsonpb.UnmarshalString(userValues[0], user)
if err != nil {
return nil, err
}
clientApp := &pb.ClientApp{}
userValues = md.Get(mdApp)
err = jsonpb.UnmarshalString(userValues[0], clientApp)
if err != nil {
return nil, err
}
newCtx := context.WithValue(ctx, ctxUser{}, user)
return context.WithValue(newCtx, ctxApp{}, clientApp), nil
}
return ctx, nil
}