mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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3fe9ecd5af
Refactor Healthz with Metrics Address for internal configuration of kube-proxy adhering to the v1alpha2 version specifications as detailed in https://kep.k8s.io/784. Signed-off-by: Daman Arora <aroradaman@gmail.com>
110 lines
3.5 KiB
Go
110 lines
3.5 KiB
Go
/*
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Copyright 2018 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 fuzzer
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import (
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"fmt"
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"net/netip"
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"time"
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"github.com/google/gofuzz"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
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kubeproxyconfig "k8s.io/kubernetes/pkg/proxy/apis/config"
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"k8s.io/utils/ptr"
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)
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// generateRandomIP is copied from pkg/apis/networking/fuzzer/fuzzer.go
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func generateRandomIP(is6 bool, c fuzz.Continue) string {
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n := 4
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if is6 {
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n = 16
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}
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bytes := make([]byte, n)
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for i := 0; i < n; i++ {
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bytes[i] = uint8(c.Rand.Intn(255))
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}
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ip, ok := netip.AddrFromSlice(bytes)
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if ok {
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return ip.String()
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}
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// this should not happen
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panic(fmt.Sprintf("invalid IP %v", bytes))
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}
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// generateRandomCIDR is copied from pkg/apis/networking/fuzzer/fuzzer.go
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func generateRandomCIDR(is6 bool, c fuzz.Continue) string {
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ip, err := netip.ParseAddr(generateRandomIP(is6, c))
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if err != nil {
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// generateRandomIP already panics if returns a not valid ip
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panic(err)
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}
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n := 32
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if is6 {
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n = 128
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}
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bits := c.Rand.Intn(n)
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prefix := netip.PrefixFrom(ip, bits)
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return prefix.Masked().String()
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}
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// getRandomDualStackCIDR returns a random dual-stack CIDR.
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func getRandomDualStackCIDR(c fuzz.Continue) []string {
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cidrIPv4 := generateRandomCIDR(false, c)
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cidrIPv6 := generateRandomCIDR(true, c)
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cidrs := []string{cidrIPv4, cidrIPv6}
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if c.RandBool() {
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cidrs = []string{cidrIPv6, cidrIPv4}
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}
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return cidrs[:1+c.Intn(2)]
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}
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// Funcs returns the fuzzer functions for the kube-proxy apis.
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func Funcs(codecs runtimeserializer.CodecFactory) []interface{} {
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return []interface{}{
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func(obj *kubeproxyconfig.KubeProxyConfiguration, c fuzz.Continue) {
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c.FuzzNoCustom(obj)
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obj.BindAddress = fmt.Sprintf("%d.%d.%d.%d", c.Intn(256), c.Intn(256), c.Intn(256), c.Intn(256))
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obj.ClientConnection.ContentType = c.RandString()
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obj.DetectLocal.ClusterCIDRs = getRandomDualStackCIDR(c)
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obj.Linux.Conntrack.MaxPerCore = ptr.To(c.Int31())
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obj.Linux.Conntrack.Min = ptr.To(c.Int31())
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obj.Linux.Conntrack.TCPCloseWaitTimeout = &metav1.Duration{Duration: time.Duration(c.Int63()) * time.Hour}
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obj.Linux.Conntrack.TCPEstablishedTimeout = &metav1.Duration{Duration: time.Duration(c.Int63()) * time.Hour}
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obj.FeatureGates = map[string]bool{c.RandString(): true}
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obj.HealthzBindAddresses = []string{fmt.Sprintf("%d.%d.%d.%d/32", c.Intn(256), c.Intn(256), c.Intn(256), c.Intn(256))}
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obj.HealthzBindPort = c.Int31() % 65536
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obj.IPTables.MasqueradeBit = ptr.To(c.Int31())
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obj.IPTables.LocalhostNodePorts = ptr.To(c.RandBool())
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obj.NFTables.MasqueradeBit = ptr.To(c.Int31())
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obj.MetricsBindAddresses = []string{fmt.Sprintf("%d.%d.%d.%d/32", c.Intn(256), c.Intn(256), c.Intn(256), c.Intn(256))}
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obj.MetricsBindPort = c.Int31() % 65536
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obj.Linux.OOMScoreAdj = ptr.To(c.Int31())
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obj.ClientConnection.ContentType = "bar"
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obj.NodePortAddresses = []string{"1.2.3.0/24"}
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if obj.Logging.Format == "" {
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obj.Logging.Format = "text"
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}
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},
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}
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}
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