hollow_proxy.go 3.9 KB

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  1. /*
  2. Copyright 2015 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 kubemark
  14. import (
  15. "fmt"
  16. "net"
  17. "time"
  18. v1 "k8s.io/api/core/v1"
  19. "k8s.io/apimachinery/pkg/types"
  20. clientset "k8s.io/client-go/kubernetes"
  21. v1core "k8s.io/client-go/kubernetes/typed/core/v1"
  22. "k8s.io/client-go/tools/record"
  23. proxyapp "k8s.io/kubernetes/cmd/kube-proxy/app"
  24. "k8s.io/kubernetes/pkg/proxy"
  25. proxyconfig "k8s.io/kubernetes/pkg/proxy/config"
  26. "k8s.io/kubernetes/pkg/proxy/iptables"
  27. proxyutiliptables "k8s.io/kubernetes/pkg/proxy/util/iptables"
  28. utiliptables "k8s.io/kubernetes/pkg/util/iptables"
  29. utilnode "k8s.io/kubernetes/pkg/util/node"
  30. utilsysctl "k8s.io/kubernetes/pkg/util/sysctl"
  31. utilexec "k8s.io/utils/exec"
  32. utilpointer "k8s.io/utils/pointer"
  33. "k8s.io/klog"
  34. )
  35. type HollowProxy struct {
  36. ProxyServer *proxyapp.ProxyServer
  37. }
  38. type FakeProxier struct {
  39. proxyconfig.NoopEndpointSliceHandler
  40. proxyconfig.NoopNodeHandler
  41. }
  42. func (*FakeProxier) Sync() {}
  43. func (*FakeProxier) SyncLoop() {
  44. select {}
  45. }
  46. func (*FakeProxier) OnServiceAdd(service *v1.Service) {}
  47. func (*FakeProxier) OnServiceUpdate(oldService, service *v1.Service) {}
  48. func (*FakeProxier) OnServiceDelete(service *v1.Service) {}
  49. func (*FakeProxier) OnServiceSynced() {}
  50. func (*FakeProxier) OnEndpointsAdd(endpoints *v1.Endpoints) {}
  51. func (*FakeProxier) OnEndpointsUpdate(oldEndpoints, endpoints *v1.Endpoints) {}
  52. func (*FakeProxier) OnEndpointsDelete(endpoints *v1.Endpoints) {}
  53. func (*FakeProxier) OnEndpointsSynced() {}
  54. func NewHollowProxyOrDie(
  55. nodeName string,
  56. client clientset.Interface,
  57. eventClient v1core.EventsGetter,
  58. iptInterface utiliptables.Interface,
  59. sysctl utilsysctl.Interface,
  60. execer utilexec.Interface,
  61. broadcaster record.EventBroadcaster,
  62. recorder record.EventRecorder,
  63. useRealProxier bool,
  64. proxierSyncPeriod time.Duration,
  65. proxierMinSyncPeriod time.Duration,
  66. ) (*HollowProxy, error) {
  67. // Create proxier and service/endpoint handlers.
  68. var proxier proxy.Provider
  69. var err error
  70. if useRealProxier {
  71. nodeIP := utilnode.GetNodeIP(client, nodeName)
  72. if nodeIP == nil {
  73. klog.V(0).Infof("can't determine this node's IP, assuming 127.0.0.1")
  74. nodeIP = net.ParseIP("127.0.0.1")
  75. }
  76. // Real proxier with fake iptables, sysctl, etc underneath it.
  77. //var err error
  78. proxier, err = iptables.NewProxier(
  79. iptInterface,
  80. sysctl,
  81. execer,
  82. proxierSyncPeriod,
  83. proxierMinSyncPeriod,
  84. false,
  85. 0,
  86. proxyutiliptables.NewNoOpLocalDetector(),
  87. nodeName,
  88. nodeIP,
  89. recorder,
  90. nil,
  91. []string{},
  92. )
  93. if err != nil {
  94. return nil, fmt.Errorf("unable to create proxier: %v", err)
  95. }
  96. } else {
  97. proxier = &FakeProxier{}
  98. }
  99. // Create a Hollow Proxy instance.
  100. nodeRef := &v1.ObjectReference{
  101. Kind: "Node",
  102. Name: nodeName,
  103. UID: types.UID(nodeName),
  104. Namespace: "",
  105. }
  106. return &HollowProxy{
  107. ProxyServer: &proxyapp.ProxyServer{
  108. Client: client,
  109. EventClient: eventClient,
  110. IptInterface: iptInterface,
  111. Proxier: proxier,
  112. Broadcaster: broadcaster,
  113. Recorder: recorder,
  114. ProxyMode: "fake",
  115. NodeRef: nodeRef,
  116. OOMScoreAdj: utilpointer.Int32Ptr(0),
  117. ConfigSyncPeriod: 30 * time.Second,
  118. },
  119. }, nil
  120. }
  121. func (hp *HollowProxy) Run() {
  122. if err := hp.ProxyServer.Run(); err != nil {
  123. klog.Fatalf("Error while running proxy: %v\n", err)
  124. }
  125. }