[v1.73] Fix issues with gateway-badging in graph (#6770)

* Fix issues with gateway-badging in graph (#6747)
- Fix server-side issue in gateway detection

Backport for #6740

.gitignore

@@ -55,6 +55,8 @@ operator
 # Do not commit helm-charts code to this repo
 helm-charts
 
+# Ignore ansible if a dev has installed it under kiali for convenience
+ansible
 
 ############################################
 #                FRONTEND                  #

frontend/src/components/CytoscapeGraph/graphs/GraphStyles.ts

@@ -267,6 +267,7 @@ export class GraphStyles {
       if (node.hasWorkloadEntry) {
         badges = `<span class="${NodeIconWorkloadEntry} ${badgeMargin(badges)}"></span> ${badges}`;
       }
+
       if (node.isRoot) {
         if (
           node.isGateway?.ingressInfo?.hostnames?.length !== undefined ||

graph/telemetry/istio/appender/istio_details.go

@@ -334,7 +334,8 @@ func (a IstioAppender) decorateGateways(trafficMap graph.TrafficMap, globalInfo
 	if len(ingressNodeMapping) != 0 || len(egressNodeMapping) != 0 {
 		gatewaysCrds := a.getIstioGatewayResources(globalInfo)
 
-		for cluster, gwCrds := range gatewaysCrds {
+		for accessibleNamespaceKey, gwCrds := range gatewaysCrds {
+			cluster := strings.Split(accessibleNamespaceKey, ":")[0]
 			for _, gwCrd := range gwCrds {
 				decorateMatchingGateways(cluster, gwCrd, ingressNodeMapping, graph.IsIngressGateway)
 				decorateMatchingGateways(cluster, gwCrd, egressNodeMapping, graph.IsEgressGateway)
@@ -346,7 +347,8 @@ func (a IstioAppender) decorateGateways(trafficMap graph.TrafficMap, globalInfo
 	if len(gatewayAPINodeMapping) != 0 {
 		gatewaysCrds := a.getGatewayAPIResources(globalInfo)
 
-		for cluster, gwCrds := range gatewaysCrds {
+		for accessibleNamespaceKey, gwCrds := range gatewaysCrds {
+			cluster := strings.Split(accessibleNamespaceKey, ":")[0]
 			for _, gwCrd := range gwCrds {
 				decorateMatchingAPIGateways(cluster, gwCrd, gatewayAPINodeMapping, graph.IsGatewayAPI)
 			}