4b40299133
NFTables proxy will now drop traffic directed towards unallocated ClusterIPs and reject traffic directed towards invalid ports of Cluster IPs. Signed-off-by: Daman Arora <aroradaman@gmail.com>
93 lines
2.9 KiB
Go
93 lines
2.9 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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proxyapp "k8s.io/kubernetes/cmd/kube-proxy/app"
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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/utils/ptr"
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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 (*FakeProxier) OnServiceCIDRsChanged(_ []string) {}
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func NewHollowProxy(
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nodeName string,
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client clientset.Interface,
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eventClient v1core.EventsGetter,
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broadcaster events.EventBroadcaster,
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recorder events.EventRecorder,
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) *HollowProxy {
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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: ptr.To[int32](0),
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},
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Client: client,
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Proxier: &FakeProxier{},
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Broadcaster: broadcaster,
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Recorder: recorder,
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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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},
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}
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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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