k8s.io/apiserver@v0.31.1/pkg/server/storage_readiness_hook_test.go (about)

     1  /*
     2  Copyright 2024 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 server
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  	"testing"
    23  	"time"
    24  
    25  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    26  	"k8s.io/apimachinery/pkg/runtime"
    27  )
    28  
    29  type fakeReadinessStorage struct {
    30  	result error
    31  }
    32  
    33  func (s *fakeReadinessStorage) New() runtime.Object   { return nil }
    34  func (s *fakeReadinessStorage) Destroy()              {}
    35  func (s *fakeReadinessStorage) ReadinessCheck() error { return s.result }
    36  
    37  func testGVR(index int) metav1.GroupVersionResource {
    38  	return metav1.GroupVersionResource{
    39  		Group:    "group",
    40  		Version:  "version",
    41  		Resource: fmt.Sprintf("resource-%d", index),
    42  	}
    43  }
    44  
    45  func TestStorageReadinessHook(t *testing.T) {
    46  	h := NewStorageReadinessHook(time.Second)
    47  
    48  	numChecks := 5
    49  	storages := make([]*fakeReadinessStorage, numChecks)
    50  	for i := 0; i < numChecks; i++ {
    51  		storages[i] = &fakeReadinessStorage{
    52  			result: fmt.Errorf("failed"),
    53  		}
    54  		h.RegisterStorage(testGVR(i), storages[i])
    55  	}
    56  
    57  	for i := 0; i < numChecks; i++ {
    58  		if ok := h.check(); ok {
    59  			t.Errorf("%d: unexpected check pass", i)
    60  		}
    61  		storages[i].result = nil
    62  	}
    63  	if ok := h.check(); !ok {
    64  		t.Errorf("unexpected check failure")
    65  	}
    66  }
    67  
    68  func TestStorageReadinessHookTimeout(t *testing.T) {
    69  	h := NewStorageReadinessHook(time.Second)
    70  
    71  	storage := &fakeReadinessStorage{
    72  		result: fmt.Errorf("failed"),
    73  	}
    74  	h.RegisterStorage(testGVR(0), storage)
    75  
    76  	ctx := context.Background()
    77  	hookCtx := PostStartHookContext{
    78  		LoopbackClientConfig: nil,
    79  		StopCh:               ctx.Done(),
    80  		Context:              ctx,
    81  	}
    82  	if err := h.Hook(hookCtx); err != nil {
    83  		t.Errorf("unexpected hook failure on timeout")
    84  	}
    85  }