feat(conformance): Add HTTPRouteMultipleRulesDifferentPools test

conformance/resources/manifests/manifests.yaml

@@ -4,57 +4,45 @@
 # individual test files or other resource directories (e.g., sample_backends).
 
 ---
-# Namespace for core infrastructure like Gateways.
 apiVersion: v1
 kind: Namespace
 metadata:
   name: gateway-conformance-infra
   labels:
     gateway-conformance: infra
 ---
-# Namespace for application backends (potentially simulating model servers
-# or where InferencePools might reside in some tests).
 apiVersion: v1
 kind: Namespace
 metadata:
   name: gateway-conformance-app-backend
   labels:
     gateway-conformance: backend
 ---
-# Namespace for simple web server backends. This is expected by
-# the upstream conformance suite's Setup method.
 apiVersion: v1
 kind: Namespace
 metadata:
   name: gateway-conformance-web-backend
   labels:
     gateway-conformance: web-backend
 ---
-# A basic Gateway resource that allows HTTPRoutes from the same namespace.
-# Tests can use this as a parent reference for routes that target InferencePools.
 apiVersion: gateway.networking.k8s.io/v1
 kind: Gateway
 metadata:
   name: conformance-gateway
   namespace: gateway-conformance-infra
 spec:
-  # The conformance suite runner will replace this placeholder
-  # with the actual GatewayClass name provided via flags.
   gatewayClassName: "{GATEWAY_CLASS_NAME}"
   listeners:
-  - name: http # Standard listener name
+  - name: http
     port: 80
     protocol: HTTP
     allowedRoutes:
       namespaces:
         from: All
       kinds:
-      # Allows HTTPRoutes to attach, which can then reference InferencePools.
       - group: gateway.networking.k8s.io
         kind: HTTPRoute
 ---
-# --- Conformance Secondary Gateway Definition ---
-# A second generic Gateway resource for tests requiring multiple Gateways.
 apiVersion: gateway.networking.k8s.io/v1
 kind: Gateway
 metadata:
@@ -66,7 +54,95 @@ spec:
   - name: http
     port: 80
     protocol: HTTP
-    hostname: "secondary.example.com" # Distinct hostname to differentiate from conformance-gateway
+    hostname: "secondary.example.com"
     allowedRoutes:
       namespaces:
         from: All
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: inference-model-1
+  namespace: gateway-conformance-app-backend
+  labels:
+    app: inference-model-1
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: inference-model-1
+  template:
+    metadata:
+      labels:
+        app: inference-model-1
+    spec:
+      containers:
+      - name: echo-basic-1
+        image: gcr.io/k8s-staging-gateway-api/echo-basic:v20240412-v1.0.0-394-g40c666fd
+        ports:
+        - name: http
+          containerPort: 3000
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 3000
+          initialDelaySeconds: 3
+          periodSeconds: 5
+          failureThreshold: 2
+        env:
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: POD_IP
+          valueFrom:
+            fieldRef:
+              fieldPath: status.podIP
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: inference-model-2
+  namespace: gateway-conformance-app-backend
+  labels:
+    app: inference-model-2
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: inference-model-2
+  template:
+    metadata:
+      labels:
+        app: inference-model-2
+    spec:
+      containers:
+      - name: echo-basic-2
+        image: gcr.io/k8s-staging-gateway-api/echo-basic:v20240412-v1.0.0-394-g40c666fd
+        ports:
+        - name: http
+          containerPort: 3000
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 3000
+          initialDelaySeconds: 3
+          periodSeconds: 5
+          failureThreshold: 2
+        env:
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+        - name: POD_IP
+          valueFrom:
+            fieldRef:
+              fieldPath: status.podIP

conformance/tests/basic/inferencepool_multiple_rules_different_pools.go

@@ -0,0 +1,91 @@
+/*
+Copyright 2025 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package basic
+
+import (
+	"testing"
+
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/gateway-api/conformance/utils/suite"
+	"sigs.k8s.io/gateway-api/pkg/features"
+
+	"sigs.k8s.io/gateway-api-inference-extension/conformance/tests"
+	k8sutils "sigs.k8s.io/gateway-api-inference-extension/conformance/utils/kubernetes"
+	trafficutils "sigs.k8s.io/gateway-api-inference-extension/conformance/utils/traffic"
+)
+
+func init() {
+	tests.ConformanceTests = append(tests.ConformanceTests, HTTPRouteMultipleRulesDifferentPools)
+}
+
+var HTTPRouteMultipleRulesDifferentPools = suite.ConformanceTest{
+	ShortName:   "HTTPRouteMultipleRulesDifferentPools",
+	Description: "An HTTPRoute with two rules routing to two different InferencePools",
+	Manifests:   []string{"tests/basic/inferencepool_multiple_rules_different_pools.yaml"},
+	Features: []features.FeatureName{
+		features.SupportGateway,
+		features.SupportHTTPRoute,
+		features.FeatureName("SupportInferencePool"),
+	},
+	Test: func(t *testing.T, s *suite.ConformanceTestSuite) {
+		const (
+			appBackendNamespace = "gateway-conformance-app-backend"
+			infraNamespace      = "gateway-conformance-infra"
+
+			poolPrimaryName   = "pool-primary"
+			poolSecondaryName = "pool-secondary"
+			routeName         = "httproute-multiple-rules-different-pools"
+			gatewayName       = "conformance-gateway"
+
+			backendPrimaryLabelValue   = "inference-model-1"
+			backendSecondaryLabelValue = "inference-model-2"
+			backendAppLabelKey         = "app"
+
+			primaryPath   = "/primary"
+			secondaryPath = "/secondary"
+		)
+
+		primaryPoolNN := types.NamespacedName{Name: poolPrimaryName, Namespace: appBackendNamespace}
+		secondaryPoolNN := types.NamespacedName{Name: poolSecondaryName, Namespace: appBackendNamespace}
+		routeNN := types.NamespacedName{Name: routeName, Namespace: appBackendNamespace}
+		gatewayNN := types.NamespacedName{Name: gatewayName, Namespace: infraNamespace}
+
+		t.Run("Wait for resources to be accepted", func(t *testing.T) {
+			k8sutils.HTTPRouteAndInferencePoolMustBeAcceptedAndRouteAccepted(t, s.Client, routeNN, gatewayNN, primaryPoolNN)
+			k8sutils.HTTPRouteAndInferencePoolMustBeAcceptedAndRouteAccepted(t, s.Client, routeNN, gatewayNN, secondaryPoolNN)
+		})
+
+		t.Run("Traffic should be routed to the correct pool based on path", func(t *testing.T) {
+			primarySelector := labels.SelectorFromSet(labels.Set{backendAppLabelKey: backendPrimaryLabelValue})
+			secondarySelector := labels.SelectorFromSet(labels.Set{backendAppLabelKey: backendSecondaryLabelValue})
+
+			primaryPod := k8sutils.GetPod(t, s.Client, appBackendNamespace, primarySelector, s.TimeoutConfig.RequestTimeout)
+			secondaryPod := k8sutils.GetPod(t, s.Client, appBackendNamespace, secondarySelector, s.TimeoutConfig.RequestTimeout)
+
+			gwAddr := k8sutils.GetGatewayEndpoint(t, s.Client, s.TimeoutConfig, gatewayNN)
+
+			t.Run("request to primary pool", func(t *testing.T) {
+				trafficutils.MakeRequestAndExpectResponseFromPod(t, s.RoundTripper, s.TimeoutConfig, gwAddr, primaryPath, primaryPod)
+			})
+
+			t.Run("request to secondary pool", func(t *testing.T) {
+				trafficutils.MakeRequestAndExpectResponseFromPod(t, s.RoundTripper, s.TimeoutConfig, gwAddr, secondaryPath, secondaryPod)
+			})
+		})
+	},
+}

conformance/tests/basic/inferencepool_multiple_rules_different_pools.yaml

@@ -0,0 +1,150 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: pool-primary-epp
+  namespace: gateway-conformance-app-backend
+spec:
+  selector:
+    app: pool-primary-epp
+  ports:
+  - name: grpc
+    port: 9002
+    targetPort: 9002
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: pool-primary-epp
+  namespace: gateway-conformance-app-backend
+  labels:
+    app: pool-primary-epp
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: pool-primary-epp
+  template:
+    metadata:
+      labels:
+        app: pool-primary-epp
+    spec:
+      containers:
+      - name: epp
+        # TODO(#996) Switch to use a released version of the image instead of epp:main
+        image: us-central1-docker.pkg.dev/k8s-staging-images/gateway-api-inference-extension/epp:main
+        imagePullPolicy: Always
+        env:
+        - name: ENABLE_REQ_HEADER_BASED_SCHEDULER_FOR_TESTING
+          value: "true"
+        args:
+        - "-poolName"
+        - "pool-primary"
+        - "-poolNamespace"
+        - "gateway-conformance-app-backend"
+        - -grpcPort
+        - "9002"
+        - -grpcHealthPort
+        - "9003"
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: pool-secondary-epp
+  namespace: gateway-conformance-app-backend
+spec:
+  selector:
+    app: pool-secondary-epp
+  ports:
+  - name: grpc
+    port: 9002
+    targetPort: 9002
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: pool-secondary-epp
+  namespace: gateway-conformance-app-backend
+  labels:
+    app: pool-secondary-epp
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: pool-secondary-epp
+  template:
+    metadata:
+      labels:
+        app: pool-secondary-epp
+    spec:
+      containers:
+      - name: epp
+        image: us-central1-docker.pkg.dev/k8s-staging-images/gateway-api-inference-extension/epp:main
+        imagePullPolicy: Always
+        env:
+        - name: ENABLE_REQ_HEADER_BASED_SCHEDULER_FOR_TESTING
+          value: "true"
+        args:
+        - "-poolName"
+        - "pool-secondary"
+        - "-poolNamespace"
+        - "gateway-conformance-app-backend"
+        - -grpcPort
+        - "9002"
+        - -grpcHealthPort
+        - "9003"
+---
+apiVersion: inference.networking.x-k8s.io/v1alpha2
+kind: InferencePool
+metadata:
+  name: pool-primary
+  namespace: gateway-conformance-app-backend
+spec:
+  selector:
+    app: inference-model-1
+  targetPortNumber: 3000
+  extensionRef:
+    name: pool-primary-epp
+    portNumber: 9002
+---
+apiVersion: inference.networking.x-k8s.io/v1alpha2
+kind: InferencePool
+metadata:
+  name: pool-secondary
+  namespace: gateway-conformance-app-backend
+spec:
+  selector:
+    app: inference-model-2
+  targetPortNumber: 3000
+  extensionRef:
+    name: pool-secondary-epp
+    portNumber: 9002
+---
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: httproute-multiple-rules-different-pools
+  namespace: gateway-conformance-app-backend
+spec:
+  parentRefs:
+    - name: conformance-gateway
+      namespace: gateway-conformance-infra
+  rules:
+    - matches:
+        - path:
+            type: PathPrefix
+            value: /primary
+      backendRefs:
+        - name: pool-primary
+          kind: InferencePool
+          group: inference.networking.x-k8s.io
+          port: 80
+    - matches:
+        - path:
+            type: PathPrefix
+            value: /secondary
+      backendRefs:
+        - name: pool-secondary
+          kind: InferencePool
+          group: inference.networking.x-k8s.io
+          port: 80