mirror of
https://github.com/intel/intel-device-plugins-for-kubernetes.git
synced 2025-06-03 03:59:37 +00:00
271bc0d29a
Currently we have hardcoded mapping from human readable names of AFs and FPGA regions like arria10-nlb0 to the resource names produced by the FPGA device plugin. This is not sustainable long term solution. Implement CRD based mappings so that a new mapping can be added or removed dynamically by cluster admins with CRD resources.
272 lines
6.8 KiB
Go
272 lines
6.8 KiB
Go
// Copyright 2018 Intel Corporation. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"bytes"
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"encoding/json"
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"io"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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"k8s.io/api/admission/v1beta1"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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)
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func fakeMutatePods(ar v1beta1.AdmissionReview) *v1beta1.AdmissionResponse {
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reviewResponse := v1beta1.AdmissionResponse{}
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return &reviewResponse
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}
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func TestServe(t *testing.T) {
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ar1, err := json.Marshal(&v1beta1.AdmissionReview{})
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if err != nil {
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t.Fatal(err)
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}
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ar2, err := json.Marshal(&v1beta1.AdmissionReview{
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Request: &v1beta1.AdmissionRequest{},
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})
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if err != nil {
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t.Fatal(err)
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}
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tcases := []struct {
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header http.Header
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body io.Reader
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expectedStatus int
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}{
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{
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expectedStatus: http.StatusBadRequest,
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},
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{
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body: strings.NewReader("hello world"),
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expectedStatus: http.StatusBadRequest,
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},
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{
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header: http.Header{
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"Content-Type": []string{"application/json"},
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},
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expectedStatus: http.StatusBadRequest,
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},
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{
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body: strings.NewReader("hello world"),
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header: http.Header{
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"Content-Type": []string{"application/json"},
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},
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expectedStatus: http.StatusOK,
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},
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{
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body: bytes.NewReader(ar1),
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header: http.Header{
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"Content-Type": []string{"application/json"},
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},
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expectedStatus: http.StatusOK,
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},
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{
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body: bytes.NewReader(ar2),
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header: http.Header{
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"Content-Type": []string{"application/json"},
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},
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expectedStatus: http.StatusOK,
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},
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}
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for _, tcase := range tcases {
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req, err := http.NewRequest("POST", "/pods", tcase.body)
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if err != nil {
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t.Fatal(err)
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}
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req.Header = tcase.header
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rr := httptest.NewRecorder()
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handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { serve(w, r, fakeMutatePods) })
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handler.ServeHTTP(rr, req)
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if status := rr.Code; status != tcase.expectedStatus {
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t.Errorf("handler returned wrong status code: got %v want %v",
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status, tcase.expectedStatus)
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}
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if tcase.expectedStatus == http.StatusOK {
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var ar v1beta1.AdmissionReview
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err = json.Unmarshal(rr.Body.Bytes(), &ar)
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if err != nil {
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t.Error(err)
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}
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}
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}
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}
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func TestMutatePods(t *testing.T) {
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pod := corev1.Pod{
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Spec: corev1.PodSpec{
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Containers: []corev1.Container{
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{
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Name: "test-container",
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Image: "test-image",
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Resources: corev1.ResourceRequirements{
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Limits: corev1.ResourceList{
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"cpu": resource.MustParse("1"),
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"fpga.intel.com/arria10": resource.MustParse("1"),
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},
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Requests: corev1.ResourceList{
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"cpu": resource.MustParse("1"),
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"fpga.intel.com/arria10": resource.MustParse("1"),
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},
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},
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},
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},
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},
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}
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podRaw, err := json.Marshal(pod)
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if err != nil {
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t.Fatal(err)
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}
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tcases := []struct {
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name string
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mode string
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ar v1beta1.AdmissionReview
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expectedResponse bool
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expectedPatchOps int
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}{
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{
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name: "empty admission request",
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ar: v1beta1.AdmissionReview{
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Request: &v1beta1.AdmissionRequest{},
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},
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mode: preprogrammed,
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},
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{
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name: "admission request without object",
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ar: v1beta1.AdmissionReview{
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Request: &v1beta1.AdmissionRequest{
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Resource: metav1.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"},
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},
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},
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mode: preprogrammed,
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expectedResponse: true,
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},
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{
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name: "admission request with corrupted object",
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ar: v1beta1.AdmissionReview{
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Request: &v1beta1.AdmissionRequest{
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Resource: metav1.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"},
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Object: runtime.RawExtension{
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Raw: []byte(`{"corrupted json":}`),
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},
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},
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},
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mode: preprogrammed,
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expectedResponse: true,
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},
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{
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name: "non-empty admission request in preprogrammed mode",
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ar: v1beta1.AdmissionReview{
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Request: &v1beta1.AdmissionRequest{
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Resource: metav1.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"},
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Object: runtime.RawExtension{
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Raw: podRaw,
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},
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},
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},
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mode: preprogrammed,
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expectedResponse: true,
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expectedPatchOps: 4,
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},
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{
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name: "non-empty admission request in orchestrated mode",
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ar: v1beta1.AdmissionReview{
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Request: &v1beta1.AdmissionRequest{
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Resource: metav1.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"},
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Object: runtime.RawExtension{
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Raw: podRaw,
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},
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},
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},
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mode: orchestrated,
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expectedResponse: true,
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expectedPatchOps: 4,
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},
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{
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name: "handle error after wrong getPatchOps()",
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ar: v1beta1.AdmissionReview{
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Request: &v1beta1.AdmissionRequest{
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Resource: metav1.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"},
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Object: runtime.RawExtension{
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Raw: podRaw,
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},
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},
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},
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mode: "unknown mode",
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expectedResponse: true,
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},
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}
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for _, tcase := range tcases {
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p := &patcher{
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mode: tcase.mode,
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regionMap: map[string]string{
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"arria10": "ce48969398f05f33946d560708be108a",
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},
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resourceMap: map[string]string{
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"fpga.intel.com/arria10": "ce48969398f05f33946d560708be108a",
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},
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}
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resp := mutatePods(tcase.ar, p)
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if !tcase.expectedResponse && resp != nil {
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t.Errorf("Test case '%s': got unexpected response", tcase.name)
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} else if tcase.expectedResponse && resp == nil {
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t.Errorf("Test case '%s': got no response", tcase.name)
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} else if tcase.expectedResponse && tcase.expectedPatchOps > 0 {
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var ops interface{}
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err := json.Unmarshal(resp.Patch, &ops)
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if err != nil {
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t.Errorf("Test case '%s': got unparsable patch '%s'", tcase.name, resp.Patch)
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} else if len(ops.([]interface{})) != tcase.expectedPatchOps {
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t.Errorf("Test case '%s': got wrong number of operations in the patch. Expected %d, but got %d",
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tcase.name, tcase.expectedPatchOps, len(ops.([]interface{})))
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}
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}
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}
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}
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type fakeResponseWriter struct {
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}
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func (*fakeResponseWriter) Header() http.Header {
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return http.Header{}
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}
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func (*fakeResponseWriter) Write([]byte) (int, error) {
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return 0, nil
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}
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func (*fakeResponseWriter) WriteHeader(int) {
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}
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func TestMakePodsHandler(t *testing.T) {
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serveFunc := makePodsHandler(&patcher{})
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serveFunc(&fakeResponseWriter{}, &http.Request{})
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}
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