ci: re-trigger e2e

Author: noyitz

pkg/controller/externalmodel/reconciler.go

@@ -38,6 +38,7 @@ import (
 
 	inferencev1alpha1 "github.com/opendatahub-io/ai-gateway-payload-processing/api/inference/v1alpha1"
 	ctrlcommon "github.com/opendatahub-io/ai-gateway-payload-processing/pkg/controller/common"
+	providerresolver "github.com/opendatahub-io/ai-gateway-payload-processing/pkg/plugins/model-provider-resolver"
 )
 
 const (
@@ -269,8 +270,8 @@ func commonLabels(modelName string) map[string]string {
 	}
 }
 
-// selectedProviderHeader is the header the ext_proc sets to drive routing.
-const selectedProviderHeader = "x-ipp-selected-provider"
+// selectedProviderHeader is the canonical header name from the plugin package.
+const selectedProviderHeader = gatewayapiv1.HTTPHeaderName(providerresolver.SelectedProviderHeader)
 
 func buildHTTPRoute(refs []resolvedRef, modelName, namespace string, port int32, gatewayName, gatewayNamespace, routeTimeout string, labels map[string]string) *gatewayapiv1.HTTPRoute {
 	gwNamespace := gatewayapiv1.Namespace(gatewayNamespace)

pkg/plugins/model-provider-resolver/plugin.go

@@ -176,6 +176,9 @@ func (p *ModelProviderResolverPlugin) ProcessRequest(ctx context.Context, cycleS
 	}
 
 	ref := selectByWeight(modelInfo.refs)
+	if ref == nil {
+		return errcommon.Error{Code: errcommon.BadRequest, Msg: "all providers for model " + modelName + " are disabled (weight 0)"}
+	}
 
 	// Drive Envoy routing to the selected provider's backend.
 	request.SetHeader(SelectedProviderHeader, ref.providerName)
@@ -215,10 +218,8 @@ func detectInputAPIFormat(path string) apiformat.APIFormat {
 }
 
 // selectByWeight picks a provider ref using weighted random selection.
-// With a single ref, returns it directly (no randomness).
-// selectByWeight picks a provider ref using weighted random selection.
-// Refs with weight <= 0 are skipped (disabled). With a single eligible
-// ref, returns it directly (no randomness).
+// Refs with weight <= 0 are skipped (disabled). Returns nil when all
+// refs have zero weight (all disabled).
 func selectByWeight(refs []*resolvedProviderRef) *resolvedProviderRef {
 	totalWeight := 0
 	for _, ref := range refs {
@@ -227,7 +228,7 @@ func selectByWeight(refs []*resolvedProviderRef) *resolvedProviderRef {
 		}
 	}
 	if totalWeight == 0 {
-		return refs[0]
+		return nil
 	}
 	r := rand.IntN(totalWeight)
 	for _, ref := range refs {