package meta

import (
	"context"
	"google.golang.org/grpc/metadata"
)

func GetUid(ctx context.Context, key string) (string, bool) {
	md, ok := metadata.FromIncomingContext(ctx)
	if !ok {
		return "", false
	}
	vals := md.Get(key)
	if len(vals) == 0 {
		return "", false
	}
	return vals[len(vals)-1], true
}