cloud_request_manager_test.go 3.7 KB

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  1. /*
  2. Copyright 2018 The Kubernetes Authors.
  3. Licensed under the Apache License, Version 2.0 (the "License");
  4. you may not use this file except in compliance with the License.
  5. You may obtain a copy of the License at
  6. http://www.apache.org/licenses/LICENSE-2.0
  7. Unless required by applicable law or agreed to in writing, software
  8. distributed under the License is distributed on an "AS IS" BASIS,
  9. WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10. See the License for the specific language governing permissions and
  11. limitations under the License.
  12. */
  13. package cloudresource
  14. import (
  15. "errors"
  16. "reflect"
  17. "testing"
  18. "time"
  19. "k8s.io/api/core/v1"
  20. "k8s.io/apimachinery/pkg/util/diff"
  21. "k8s.io/cloud-provider/fake"
  22. )
  23. func createNodeInternalIPAddress(address string) []v1.NodeAddress {
  24. return []v1.NodeAddress{
  25. {
  26. Type: v1.NodeInternalIP,
  27. Address: address,
  28. },
  29. }
  30. }
  31. func TestNodeAddressesDelay(t *testing.T) {
  32. syncPeriod := 100 * time.Millisecond
  33. cloud := &fake.Cloud{
  34. Addresses: createNodeInternalIPAddress("10.0.1.12"),
  35. // Set the request delay so the manager timeouts and collects the node addresses later
  36. RequestDelay: 200 * time.Millisecond,
  37. }
  38. stopCh := make(chan struct{})
  39. defer close(stopCh)
  40. manager := NewSyncManager(cloud, "defaultNode", syncPeriod).(*cloudResourceSyncManager)
  41. go manager.Run(stopCh)
  42. nodeAddresses, err := manager.NodeAddresses()
  43. if err != nil {
  44. t.Errorf("Unexpected err: %q\n", err)
  45. }
  46. if !reflect.DeepEqual(nodeAddresses, cloud.Addresses) {
  47. t.Errorf("Unexpected diff of node addresses: %v", diff.ObjectReflectDiff(nodeAddresses, cloud.Addresses))
  48. }
  49. // Change the IP address
  50. cloud.SetNodeAddresses(createNodeInternalIPAddress("10.0.1.13"))
  51. // Wait until the IP address changes
  52. maxRetry := 5
  53. for i := 0; i < maxRetry; i++ {
  54. nodeAddresses, err := manager.NodeAddresses()
  55. t.Logf("nodeAddresses: %#v, err: %v", nodeAddresses, err)
  56. if err != nil {
  57. t.Errorf("Unexpected err: %q\n", err)
  58. }
  59. // It is safe to read cloud.Addresses since no routine is changing the value at the same time
  60. if err == nil && nodeAddresses[0].Address != cloud.Addresses[0].Address {
  61. time.Sleep(syncPeriod)
  62. continue
  63. }
  64. if err != nil {
  65. t.Errorf("Unexpected err: %q\n", err)
  66. }
  67. return
  68. }
  69. t.Errorf("Timeout waiting for %q address to appear", cloud.Addresses[0].Address)
  70. }
  71. func TestNodeAddressesUsesLastSuccess(t *testing.T) {
  72. cloud := &fake.Cloud{}
  73. manager := NewSyncManager(cloud, "defaultNode", 0).(*cloudResourceSyncManager)
  74. // These tests are stateful and order dependant.
  75. tests := []struct {
  76. name string
  77. addrs []v1.NodeAddress
  78. err error
  79. wantAddrs []v1.NodeAddress
  80. wantErr bool
  81. }{
  82. {
  83. name: "first sync loop encounters an error",
  84. err: errors.New("bad"),
  85. wantErr: true,
  86. },
  87. {
  88. name: "subsequent sync loop succeeds",
  89. addrs: createNodeInternalIPAddress("10.0.1.12"),
  90. wantAddrs: createNodeInternalIPAddress("10.0.1.12"),
  91. },
  92. {
  93. name: "subsequent sync loop encounters an error, last addresses returned",
  94. err: errors.New("bad"),
  95. wantAddrs: createNodeInternalIPAddress("10.0.1.12"),
  96. },
  97. {
  98. name: "subsequent sync loop succeeds changing addresses",
  99. addrs: createNodeInternalIPAddress("10.0.1.13"),
  100. wantAddrs: createNodeInternalIPAddress("10.0.1.13"),
  101. },
  102. }
  103. for _, test := range tests {
  104. t.Run(test.name, func(t *testing.T) {
  105. cloud.Addresses = test.addrs
  106. cloud.Err = test.err
  107. manager.syncNodeAddresses()
  108. nodeAddresses, err := manager.NodeAddresses()
  109. if (err != nil) != test.wantErr {
  110. t.Errorf("unexpected err: %v", err)
  111. }
  112. if got, want := nodeAddresses, test.wantAddrs; !reflect.DeepEqual(got, want) {
  113. t.Errorf("Unexpected diff of node addresses: %v", diff.ObjectReflectDiff(got, want))
  114. }
  115. })
  116. }
  117. }