temporal: always set temporal-namespace header on requests (#7079) (#7080)

* temporal: always set temporal-namespace header on requests (#7079)

Signed-off-by: Robert Cao <robert.cao@relativity.com>

* changelog

Signed-off-by: Robert Cao <robert.cao@relativity.com>

* fix: reorder changelog

Signed-off-by: Robert Cao <robert.cao@relativity.com>

---------

Signed-off-by: Robert Cao <robert.cao@relativity.com>
Signed-off-by: Zbynek Roubalik <zroubalik@gmail.com>
Co-authored-by: Zbynek Roubalik <zroubalik@gmail.com>

Author: robcao

CHANGELOG.md

@@ -92,6 +92,7 @@ To learn more about active deprecations, we recommend checking [GitHub Discussio
 - **Github Scaler**: Add support to control unlabeled job/runner matching ([#6900](https://github.com/kedacore/keda/issues/6900))
 - **Metrics API Scaler**: Support AuthParams for authMode ([#6939](https://github.com/kedacore/keda/issues/6939))
 - **Metrics API Scaler**: Support multiple auth methods simultaneously ([#6642](https://github.com/kedacore/keda/issues/6642))
+- **Temporal Scaler**: Always set `temporal-namespace` header on requests([#7079](https://github.com/kedacore/keda/issues/7079))
 - **Temporal Scaler**: Support custom tlsServerName ([#6820](https://github.com/kedacore/keda/pull/6820))
 
 ### Fixes

pkg/scalers/temporal_scaler.go

@@ -210,23 +210,24 @@ func getTemporalClient(ctx context.Context, meta *temporalMetadata, log logr.Log
 		}),
 	}
 
+	dialOptions = append(dialOptions, grpc.WithUnaryInterceptor(
+		func(ctx context.Context, method string, req any, reply any,
+			cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption,
+		) error {
+			return invoker(
+				metadata.AppendToOutgoingContext(ctx, "temporal-namespace", meta.Namespace),
+				method,
+				req,
+				reply,
+				cc,
+				opts...,
+			)
+		},
+	))
+
 	var tlsConfig *tls.Config
 
 	if meta.APIKey != "" {
-		dialOptions = append(dialOptions, grpc.WithUnaryInterceptor(
-			func(ctx context.Context, method string, req any, reply any,
-				cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption,
-			) error {
-				return invoker(
-					metadata.AppendToOutgoingContext(ctx, "temporal-namespace", meta.Namespace),
-					method,
-					req,
-					reply,
-					cc,
-					opts...,
-				)
-			},
-		))
 		options.Credentials = sdk.NewAPIKeyStaticCredentials(meta.APIKey)
 		tlsConfig = &tls.Config{
 			MinVersion: kedautil.GetMinTLSVersion(),