10a869fc75
Rather than duplicating some of the KubeProxyConfiguration into ProxyServer, just store the KubeProxyConfiguration itself so later code can reference it directly. For the fields that get platform-specific defaults (Mode, DetectLocalMode), fill the defaults directly into the KubeProxyConfiguration rather than keeping the original there and the defaulted version in the ProxyServer.
150 lines
4.3 KiB
Go
150 lines
4.3 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package kubemark
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import (
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"fmt"
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"time"
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v1 "k8s.io/api/core/v1"
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discoveryv1 "k8s.io/api/discovery/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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clientset "k8s.io/client-go/kubernetes"
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v1core "k8s.io/client-go/kubernetes/typed/core/v1"
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"k8s.io/client-go/tools/events"
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utilsysctl "k8s.io/component-helpers/node/util/sysctl"
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proxyapp "k8s.io/kubernetes/cmd/kube-proxy/app"
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"k8s.io/kubernetes/pkg/proxy"
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proxyconfigapi "k8s.io/kubernetes/pkg/proxy/apis/config"
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proxyconfig "k8s.io/kubernetes/pkg/proxy/config"
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"k8s.io/kubernetes/pkg/proxy/iptables"
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proxyutiliptables "k8s.io/kubernetes/pkg/proxy/util/iptables"
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utiliptables "k8s.io/kubernetes/pkg/util/iptables"
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utilnode "k8s.io/kubernetes/pkg/util/node"
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utilexec "k8s.io/utils/exec"
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netutils "k8s.io/utils/net"
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utilpointer "k8s.io/utils/pointer"
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"k8s.io/klog/v2"
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)
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type HollowProxy struct {
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ProxyServer *proxyapp.ProxyServer
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}
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type FakeProxier struct {
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proxyconfig.NoopNodeHandler
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}
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func (*FakeProxier) Sync() {}
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func (*FakeProxier) SyncLoop() {
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select {}
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}
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func (*FakeProxier) OnServiceAdd(service *v1.Service) {}
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func (*FakeProxier) OnServiceUpdate(oldService, service *v1.Service) {}
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func (*FakeProxier) OnServiceDelete(service *v1.Service) {}
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func (*FakeProxier) OnServiceSynced() {}
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func (*FakeProxier) OnEndpointSliceAdd(slice *discoveryv1.EndpointSlice) {}
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func (*FakeProxier) OnEndpointSliceUpdate(oldSlice, slice *discoveryv1.EndpointSlice) {}
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func (*FakeProxier) OnEndpointSliceDelete(slice *discoveryv1.EndpointSlice) {}
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func (*FakeProxier) OnEndpointSlicesSynced() {}
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func NewHollowProxyOrDie(
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nodeName string,
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client clientset.Interface,
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eventClient v1core.EventsGetter,
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iptInterface utiliptables.Interface,
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sysctl utilsysctl.Interface,
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execer utilexec.Interface,
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broadcaster events.EventBroadcaster,
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recorder events.EventRecorder,
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useRealProxier bool,
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proxierSyncPeriod time.Duration,
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proxierMinSyncPeriod time.Duration,
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) (*HollowProxy, error) {
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// Create proxier and service/endpoint handlers.
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var proxier proxy.Provider
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var err error
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if useRealProxier {
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nodeIP := utilnode.GetNodeIP(client, nodeName)
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if nodeIP == nil {
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klog.InfoS("Can't determine this node's IP, assuming 127.0.0.1")
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nodeIP = netutils.ParseIPSloppy("127.0.0.1")
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}
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family := v1.IPv4Protocol
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if iptInterface.IsIPv6() {
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family = v1.IPv6Protocol
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}
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// Real proxier with fake iptables, sysctl, etc underneath it.
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//var err error
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proxier, err = iptables.NewProxier(
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family,
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iptInterface,
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sysctl,
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execer,
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proxierSyncPeriod,
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proxierMinSyncPeriod,
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false,
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false,
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0,
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proxyutiliptables.NewNoOpLocalDetector(),
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nodeName,
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nodeIP,
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recorder,
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nil,
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[]string{},
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)
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if err != nil {
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return nil, fmt.Errorf("unable to create proxier: %v", err)
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}
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} else {
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proxier = &FakeProxier{}
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}
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// Create a Hollow Proxy instance.
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nodeRef := &v1.ObjectReference{
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Kind: "Node",
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Name: nodeName,
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UID: types.UID(nodeName),
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Namespace: "",
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}
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return &HollowProxy{
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ProxyServer: &proxyapp.ProxyServer{
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Config: &proxyconfigapi.KubeProxyConfiguration{
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Mode: proxyconfigapi.ProxyMode("fake"),
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ConfigSyncPeriod: metav1.Duration{Duration: 30 * time.Second},
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OOMScoreAdj: utilpointer.Int32Ptr(0),
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},
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Client: client,
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Proxier: proxier,
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Broadcaster: broadcaster,
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Recorder: recorder,
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NodeRef: nodeRef,
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},
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}, nil
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}
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func (hp *HollowProxy) Run() error {
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if err := hp.ProxyServer.Run(); err != nil {
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return fmt.Errorf("Error while running proxy: %w", err)
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}
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return nil
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}
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