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| 1 | +/* |
| 2 | +Copyright 2025 The Kubernetes Authors. |
| 3 | +
|
| 4 | +Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +you may not use this file except in compliance with the License. |
| 6 | +You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | +Unless required by applicable law or agreed to in writing, software |
| 11 | +distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +See the License for the specific language governing permissions and |
| 14 | +limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +package tests |
| 18 | + |
| 19 | +import ( |
| 20 | + "net/http" |
| 21 | + "testing" |
| 22 | + |
| 23 | + "github.com/stretchr/testify/require" |
| 24 | + "k8s.io/apimachinery/pkg/types" |
| 25 | + gwhttp "sigs.k8s.io/gateway-api/conformance/utils/http" |
| 26 | + "sigs.k8s.io/gateway-api/conformance/utils/suite" |
| 27 | + "sigs.k8s.io/gateway-api/pkg/features" |
| 28 | + |
| 29 | + "sigs.k8s.io/gateway-api-inference-extension/conformance/resources" |
| 30 | + k8sutils "sigs.k8s.io/gateway-api-inference-extension/conformance/utils/kubernetes" |
| 31 | + "sigs.k8s.io/gateway-api-inference-extension/pkg/epp/requestcontrol/plugins/test" |
| 32 | + testscheduling "sigs.k8s.io/gateway-api-inference-extension/pkg/epp/scheduling/framework/plugins/test" |
| 33 | +) |
| 34 | + |
| 35 | +func init() { |
| 36 | + ConformanceTests = append(ConformanceTests, GatewayDestinationEndpointServed) |
| 37 | +} |
| 38 | + |
| 39 | +var GatewayDestinationEndpointServed = suite.ConformanceTest{ |
| 40 | + ShortName: "GatewayDestinationEndpointServed", |
| 41 | + Description: "A conformance test to verify that the gateway correctly reports the endpoint that served the request.", |
| 42 | + Manifests: []string{"tests/gateway_destination_endpoint_served.yaml"}, |
| 43 | + Features: []features.FeatureName{ |
| 44 | + features.FeatureName("SupportInferencePool"), |
| 45 | + features.SupportGateway, |
| 46 | + }, |
| 47 | + Test: func(t *testing.T, s *suite.ConformanceTestSuite) { |
| 48 | + const ( |
| 49 | + hostname = "primary.example.com" |
| 50 | + path = "/destination-endpoint-served-test" |
| 51 | + ) |
| 52 | + |
| 53 | + httpRouteNN := types.NamespacedName{Name: "httproute-for-destination-endpoint-served", Namespace: resources.AppBackendNamespace} |
| 54 | + gatewayNN := resources.PrimaryGatewayNN |
| 55 | + poolNN := resources.PrimaryInferencePoolNN |
| 56 | + backendPodLabels := map[string]string{"app": resources.PrimaryModelServerAppLabel} |
| 57 | + |
| 58 | + t.Log("Verifying HTTPRoute and InferencePool are accepted and the Gateway has an address.") |
| 59 | + k8sutils.HTTPRouteMustBeAcceptedAndResolved(t, s.Client, s.TimeoutConfig, httpRouteNN, gatewayNN) |
| 60 | + k8sutils.InferencePoolMustBeAcceptedByParent(t, s.Client, poolNN, gatewayNN) |
| 61 | + gwAddr := k8sutils.GetGatewayEndpoint(t, s.Client, s.TimeoutConfig, gatewayNN) |
| 62 | + |
| 63 | + t.Logf("Fetching backend pods with labels: %v", backendPodLabels) |
| 64 | + pods, err := k8sutils.GetPodsWithLabel(t, s.Client, resources.AppBackendNamespace, backendPodLabels, s.TimeoutConfig) |
| 65 | + require.NoError(t, err, "Failed to get backend pods") |
| 66 | + require.Len(t, pods, resources.ModelServerPodReplicas, "Expected to find %d backend pods, but found %d.", resources.ModelServerPodReplicas, len(pods)) |
| 67 | + |
| 68 | + podIPs := make([]string, len(pods)) |
| 69 | + podNames := make([]string, len(pods)) |
| 70 | + for i, pod := range pods { |
| 71 | + podIPs[i] = pod.Status.PodIP |
| 72 | + podNames[i] = pod.Name |
| 73 | + } |
| 74 | + |
| 75 | + requestBody := `{ |
| 76 | + "model": "conformance-fake-model", |
| 77 | + "prompt": "Write as if you were a critic: San Francisco" |
| 78 | + }` |
| 79 | + t.Run("Request is served by the selected backend pod", func(t *testing.T) { |
| 80 | + for i := 0; i < len(pods); i++ { |
| 81 | + gwhttp.MakeRequestAndExpectEventuallyConsistentResponse( |
| 82 | + t, |
| 83 | + s.RoundTripper, |
| 84 | + s.TimeoutConfig, |
| 85 | + gwAddr, |
| 86 | + gwhttp.ExpectedResponse{ |
| 87 | + Request: gwhttp.Request{ |
| 88 | + Host: hostname, |
| 89 | + Path: path, |
| 90 | + Method: http.MethodPost, |
| 91 | + Body: requestBody, |
| 92 | + Headers: map[string]string{ |
| 93 | + testscheduling.HeaderTestEppEndPointSelectionKey: podIPs[i], |
| 94 | + }, |
| 95 | + }, |
| 96 | + Response: gwhttp.Response{ |
| 97 | + StatusCodes: []int{http.StatusOK}, |
| 98 | + Headers: map[string]string{ |
| 99 | + test.ConformanceTestResultHeader: podIPs[i] + ":3000", // The echo server's port is 3000. |
| 100 | + }, |
| 101 | + }, |
| 102 | + Backend: podNames[i], |
| 103 | + Namespace: resources.AppBackendNamespace, |
| 104 | + }, |
| 105 | + ) |
| 106 | + } |
| 107 | + }) |
| 108 | + }, |
| 109 | +} |
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