fix(gateway): make MeshHTTPRoute-based routing available to plugins (#…

…8916)

Signed-off-by: Mike Beaumont <[email protected]>

pkg/plugins/policies/meshhttproute/plugin/v1alpha1/plugin.go

@@ -120,7 +120,8 @@ func ApplyToGateway(
 		return nil
 	}
 
-	for _, info := range plugin_gateway.ExtractGatewayListeners(proxy) {
+	listeners := plugin_gateway.ExtractGatewayListeners(proxy)
+	for listenerIndex, info := range listeners {
 		address := proxy.Dataplane.Spec.GetNetworking().Address
 		port := info.Listener.Port
 		inboundListener := rules.InboundListener{
@@ -187,6 +188,10 @@ func ApplyToGateway(
 			return hostInfos[i].Host.Hostname > hostInfos[j].Host.Hostname
 		})
 
+		info.HostInfos = hostInfos
+		listeners[listenerIndex] = info
+		plugin_gateway.SetGatewayListeners(proxy, listeners)
+
 		cdsResources, err := generateGatewayClusters(ctx, xdsCtx, info, hostInfos)
 		if err != nil {
 			return err

pkg/plugins/runtime/gateway/plugin.go

@@ -62,6 +62,10 @@ func ExtractGatewayListeners(proxy *core_xds.Proxy) []GatewayListenerInfo {
 	return ext.([]GatewayListenerInfo)
 }
 
+func SetGatewayListeners(proxy *core_xds.Proxy, infos []GatewayListenerInfo) {
+	proxy.RuntimeExtensions[metadata.PluginName] = infos
+}
+
 func (p *plugin) AfterBootstrap(context *core_plugins.MutablePluginContext, config core_plugins.PluginConfig) error {
 	// Insert our resolver before the default so that we can intercept
 	// builtin gateway dataplanes.