Fix lint: add checked type assertion and allow protobuf/proto in depguard

Author: mostafa

.golangci.yaml

@@ -39,5 +39,5 @@ linters-settings:
           - "github.com/getsentry/sentry-go"
           - "github.com/spf13/cast"
           - "github.com/go-co-op/gocron"
-          - "google.golang.org/protobuf/types/known/emptypb"
+          - "google.golang.org/protobuf"
           - "google.golang.org/grpc"

plugin/plugin.go

@@ -297,7 +297,9 @@ func (p *Plugin) OnTrafficFromServer(
 	_ context.Context, resp *v1.Struct,
 ) (*v1.Struct, error) {
 	p.Logger.Debug("Traffic is coming from the server side")
-	p.UpdateCacheChannel <- proto.Clone(resp).(*v1.Struct)
+	if cloned, ok := proto.Clone(resp).(*v1.Struct); ok {
+		p.UpdateCacheChannel <- cloned
+	}
 	return resp, nil
 }