mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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561 lines
18 KiB
Go
561 lines
18 KiB
Go
/*
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Copyright 2017 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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"reflect"
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"strconv"
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"time"
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fuzz "github.com/google/gofuzz"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
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"k8s.io/apimachinery/pkg/util/intstr"
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"k8s.io/kubernetes/pkg/apis/core"
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utilpointer "k8s.io/utils/pointer"
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)
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// Funcs returns the fuzzer functions for the core group.
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var Funcs = func(codecs runtimeserializer.CodecFactory) []interface{} {
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return []interface{}{
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func(q *resource.Quantity, c fuzz.Continue) {
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*q = *resource.NewQuantity(c.Int63n(1000), resource.DecimalExponent)
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},
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func(j *core.ObjectReference, c fuzz.Continue) {
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// We have to customize the randomization of TypeMetas because their
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// APIVersion and Kind must remain blank in memory.
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j.APIVersion = c.RandString()
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j.Kind = c.RandString()
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j.Namespace = c.RandString()
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j.Name = c.RandString()
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j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
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j.FieldPath = c.RandString()
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},
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func(j *core.PodExecOptions, c fuzz.Continue) {
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j.Stdout = true
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j.Stderr = true
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},
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func(j *core.PodAttachOptions, c fuzz.Continue) {
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j.Stdout = true
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j.Stderr = true
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},
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func(j *core.PodPortForwardOptions, c fuzz.Continue) {
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if c.RandBool() {
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j.Ports = make([]int32, c.Intn(10))
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for i := range j.Ports {
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j.Ports[i] = c.Int31n(65535)
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}
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}
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},
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func(s *core.PodSpec, c fuzz.Continue) {
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c.FuzzNoCustom(s)
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// has a default value
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ttl := int64(30)
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if c.RandBool() {
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ttl = int64(c.Uint32())
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}
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s.TerminationGracePeriodSeconds = &ttl
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c.Fuzz(s.SecurityContext)
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if s.SecurityContext == nil {
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s.SecurityContext = new(core.PodSecurityContext)
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}
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if s.Affinity == nil {
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s.Affinity = new(core.Affinity)
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}
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if s.SchedulerName == "" {
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s.SchedulerName = v1.DefaultSchedulerName
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}
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if s.EnableServiceLinks == nil {
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enableServiceLinks := v1.DefaultEnableServiceLinks
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s.EnableServiceLinks = &enableServiceLinks
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}
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},
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func(s *core.PodStatus, c fuzz.Continue) {
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c.Fuzz(&s)
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s.HostIPs = []core.HostIP{{IP: s.HostIP}}
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},
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func(j *core.PodPhase, c fuzz.Continue) {
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statuses := []core.PodPhase{core.PodPending, core.PodRunning, core.PodFailed, core.PodUnknown}
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*j = statuses[c.Rand.Intn(len(statuses))]
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},
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func(j *core.Binding, c fuzz.Continue) {
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c.Fuzz(&j.ObjectMeta)
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j.Target.Name = c.RandString()
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},
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func(j *core.ReplicationController, c fuzz.Continue) {
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c.FuzzNoCustom(j)
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// match defaulting
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if j.Spec.Template != nil {
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if len(j.Labels) == 0 {
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j.Labels = j.Spec.Template.Labels
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}
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if len(j.Spec.Selector) == 0 {
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j.Spec.Selector = j.Spec.Template.Labels
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}
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}
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},
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func(j *core.ReplicationControllerSpec, c fuzz.Continue) {
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c.FuzzNoCustom(j) // fuzz self without calling this function again
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//j.TemplateRef = nil // this is required for round trip
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},
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func(j *core.List, c fuzz.Continue) {
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c.FuzzNoCustom(j) // fuzz self without calling this function again
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// TODO: uncomment when round trip starts from a versioned object
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if false { //j.Items == nil {
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j.Items = []runtime.Object{}
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}
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},
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func(q *core.ResourceRequirements, c fuzz.Continue) {
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randomQuantity := func() resource.Quantity {
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var q resource.Quantity
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c.Fuzz(&q)
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// precalc the string for benchmarking purposes
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_ = q.String()
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return q
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}
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q.Limits = make(core.ResourceList)
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q.Requests = make(core.ResourceList)
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cpuLimit := randomQuantity()
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q.Limits[core.ResourceCPU] = cpuLimit.DeepCopy()
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q.Requests[core.ResourceCPU] = cpuLimit.DeepCopy()
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memoryLimit := randomQuantity()
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q.Limits[core.ResourceMemory] = memoryLimit.DeepCopy()
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q.Requests[core.ResourceMemory] = memoryLimit.DeepCopy()
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storageLimit := randomQuantity()
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q.Limits[core.ResourceStorage] = storageLimit.DeepCopy()
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q.Requests[core.ResourceStorage] = storageLimit.DeepCopy()
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},
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func(q *core.LimitRangeItem, c fuzz.Continue) {
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var cpuLimit resource.Quantity
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c.Fuzz(&cpuLimit)
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q.Type = core.LimitTypeContainer
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q.Default = make(core.ResourceList)
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q.Default[core.ResourceCPU] = cpuLimit.DeepCopy()
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q.DefaultRequest = make(core.ResourceList)
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q.DefaultRequest[core.ResourceCPU] = cpuLimit.DeepCopy()
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q.Max = make(core.ResourceList)
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q.Max[core.ResourceCPU] = cpuLimit.DeepCopy()
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q.Min = make(core.ResourceList)
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q.Min[core.ResourceCPU] = cpuLimit.DeepCopy()
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q.MaxLimitRequestRatio = make(core.ResourceList)
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q.MaxLimitRequestRatio[core.ResourceCPU] = resource.MustParse("10")
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},
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func(p *core.PullPolicy, c fuzz.Continue) {
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policies := []core.PullPolicy{core.PullAlways, core.PullNever, core.PullIfNotPresent}
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*p = policies[c.Rand.Intn(len(policies))]
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},
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func(rp *core.RestartPolicy, c fuzz.Continue) {
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policies := []core.RestartPolicy{core.RestartPolicyAlways, core.RestartPolicyNever, core.RestartPolicyOnFailure}
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*rp = policies[c.Rand.Intn(len(policies))]
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},
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// core.DownwardAPIVolumeFile needs to have a specific func since FieldRef has to be
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// defaulted to a version otherwise roundtrip will fail
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func(m *core.DownwardAPIVolumeFile, c fuzz.Continue) {
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m.Path = c.RandString()
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versions := []string{"v1"}
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m.FieldRef = &core.ObjectFieldSelector{}
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m.FieldRef.APIVersion = versions[c.Rand.Intn(len(versions))]
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m.FieldRef.FieldPath = c.RandString()
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c.Fuzz(m.Mode)
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if m.Mode != nil {
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*m.Mode &= 0777
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}
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},
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func(s *core.SecretVolumeSource, c fuzz.Continue) {
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c.FuzzNoCustom(s) // fuzz self without calling this function again
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if c.RandBool() {
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opt := c.RandBool()
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s.Optional = &opt
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}
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// DefaultMode should always be set, it has a default
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// value and it is expected to be between 0 and 0777
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var mode int32
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c.Fuzz(&mode)
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mode &= 0777
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s.DefaultMode = &mode
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},
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func(cm *core.ConfigMapVolumeSource, c fuzz.Continue) {
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c.FuzzNoCustom(cm) // fuzz self without calling this function again
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if c.RandBool() {
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opt := c.RandBool()
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cm.Optional = &opt
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}
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// DefaultMode should always be set, it has a default
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// value and it is expected to be between 0 and 0777
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var mode int32
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c.Fuzz(&mode)
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mode &= 0777
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cm.DefaultMode = &mode
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},
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func(d *core.DownwardAPIVolumeSource, c fuzz.Continue) {
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c.FuzzNoCustom(d) // fuzz self without calling this function again
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// DefaultMode should always be set, it has a default
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// value and it is expected to be between 0 and 0777
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var mode int32
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c.Fuzz(&mode)
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mode &= 0777
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d.DefaultMode = &mode
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},
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func(s *core.ProjectedVolumeSource, c fuzz.Continue) {
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c.FuzzNoCustom(s) // fuzz self without calling this function again
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// DefaultMode should always be set, it has a default
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// value and it is expected to be between 0 and 0777
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var mode int32
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c.Fuzz(&mode)
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mode &= 0777
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s.DefaultMode = &mode
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},
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func(k *core.KeyToPath, c fuzz.Continue) {
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c.FuzzNoCustom(k) // fuzz self without calling this function again
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k.Key = c.RandString()
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k.Path = c.RandString()
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// Mode is not mandatory, but if it is set, it should be
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// a value between 0 and 0777
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if k.Mode != nil {
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*k.Mode &= 0777
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}
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},
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func(vs *core.VolumeSource, c fuzz.Continue) {
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// Exactly one of the fields must be set.
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v := reflect.ValueOf(vs).Elem()
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i := int(c.RandUint64() % uint64(v.NumField()))
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t := v.Field(i).Addr()
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for v.Field(i).IsNil() {
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c.Fuzz(t.Interface())
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}
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},
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func(i *core.ISCSIVolumeSource, c fuzz.Continue) {
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i.ISCSIInterface = c.RandString()
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if i.ISCSIInterface == "" {
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i.ISCSIInterface = "default"
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}
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},
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func(i *core.ISCSIPersistentVolumeSource, c fuzz.Continue) {
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i.ISCSIInterface = c.RandString()
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if i.ISCSIInterface == "" {
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i.ISCSIInterface = "default"
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}
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},
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func(i *core.PersistentVolumeClaimSpec, c fuzz.Continue) {
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// Match defaulting in pkg/apis/core/v1/defaults.go.
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volumeMode := core.PersistentVolumeMode(c.RandString())
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if volumeMode == "" {
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volumeMode = core.PersistentVolumeFilesystem
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}
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i.VolumeMode = &volumeMode
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},
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func(d *core.DNSPolicy, c fuzz.Continue) {
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policies := []core.DNSPolicy{core.DNSClusterFirst, core.DNSDefault}
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*d = policies[c.Rand.Intn(len(policies))]
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},
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func(p *core.Protocol, c fuzz.Continue) {
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protocols := []core.Protocol{core.ProtocolTCP, core.ProtocolUDP, core.ProtocolSCTP}
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*p = protocols[c.Rand.Intn(len(protocols))]
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},
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func(p *core.ServiceAffinity, c fuzz.Continue) {
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types := []core.ServiceAffinity{core.ServiceAffinityClientIP, core.ServiceAffinityNone}
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*p = types[c.Rand.Intn(len(types))]
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},
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func(p *core.ServiceType, c fuzz.Continue) {
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types := []core.ServiceType{core.ServiceTypeClusterIP, core.ServiceTypeNodePort, core.ServiceTypeLoadBalancer}
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*p = types[c.Rand.Intn(len(types))]
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},
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func(p *core.IPFamily, c fuzz.Continue) {
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types := []core.IPFamily{core.IPv4Protocol, core.IPv6Protocol}
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selected := types[c.Rand.Intn(len(types))]
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*p = selected
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},
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func(p *core.ServiceExternalTrafficPolicy, c fuzz.Continue) {
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types := []core.ServiceExternalTrafficPolicy{core.ServiceExternalTrafficPolicyCluster, core.ServiceExternalTrafficPolicyLocal}
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*p = types[c.Rand.Intn(len(types))]
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},
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func(p *core.ServiceInternalTrafficPolicy, c fuzz.Continue) {
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types := []core.ServiceInternalTrafficPolicy{core.ServiceInternalTrafficPolicyCluster, core.ServiceInternalTrafficPolicyLocal}
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*p = types[c.Rand.Intn(len(types))]
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},
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func(ct *core.Container, c fuzz.Continue) {
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c.FuzzNoCustom(ct) // fuzz self without calling this function again
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ct.TerminationMessagePath = "/" + ct.TerminationMessagePath // Must be non-empty
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ct.TerminationMessagePolicy = "File"
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},
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func(ep *core.EphemeralContainer, c fuzz.Continue) {
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c.FuzzNoCustom(ep) // fuzz self without calling this function again
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ep.EphemeralContainerCommon.TerminationMessagePath = "/" + ep.TerminationMessagePath // Must be non-empty
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ep.EphemeralContainerCommon.TerminationMessagePolicy = "File"
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},
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func(p *core.Probe, c fuzz.Continue) {
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c.FuzzNoCustom(p)
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// These fields have default values.
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intFieldsWithDefaults := [...]string{"TimeoutSeconds", "PeriodSeconds", "SuccessThreshold", "FailureThreshold"}
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v := reflect.ValueOf(p).Elem()
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for _, field := range intFieldsWithDefaults {
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f := v.FieldByName(field)
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if f.Int() == 0 {
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f.SetInt(1)
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}
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}
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},
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func(ev *core.EnvVar, c fuzz.Continue) {
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ev.Name = c.RandString()
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if c.RandBool() {
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ev.Value = c.RandString()
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} else {
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ev.ValueFrom = &core.EnvVarSource{}
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ev.ValueFrom.FieldRef = &core.ObjectFieldSelector{}
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versions := []schema.GroupVersion{
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{Group: "admission.k8s.io", Version: "v1alpha1"},
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{Group: "apps", Version: "v1beta1"},
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{Group: "apps", Version: "v1beta2"},
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{Group: "foo", Version: "v42"},
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}
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ev.ValueFrom.FieldRef.APIVersion = versions[c.Rand.Intn(len(versions))].String()
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ev.ValueFrom.FieldRef.FieldPath = c.RandString()
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}
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},
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func(ev *core.EnvFromSource, c fuzz.Continue) {
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if c.RandBool() {
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ev.Prefix = "p_"
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}
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if c.RandBool() {
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c.Fuzz(&ev.ConfigMapRef)
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} else {
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c.Fuzz(&ev.SecretRef)
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}
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},
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func(cm *core.ConfigMapEnvSource, c fuzz.Continue) {
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c.FuzzNoCustom(cm) // fuzz self without calling this function again
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if c.RandBool() {
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opt := c.RandBool()
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cm.Optional = &opt
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}
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},
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func(s *core.SecretEnvSource, c fuzz.Continue) {
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c.FuzzNoCustom(s) // fuzz self without calling this function again
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},
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func(sc *core.SecurityContext, c fuzz.Continue) {
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c.FuzzNoCustom(sc) // fuzz self without calling this function again
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if c.RandBool() {
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priv := c.RandBool()
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sc.Privileged = &priv
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}
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if c.RandBool() {
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sc.Capabilities = &core.Capabilities{
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Add: make([]core.Capability, 0),
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Drop: make([]core.Capability, 0),
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}
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c.Fuzz(&sc.Capabilities.Add)
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c.Fuzz(&sc.Capabilities.Drop)
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}
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},
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func(s *core.Secret, c fuzz.Continue) {
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c.FuzzNoCustom(s) // fuzz self without calling this function again
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s.Type = core.SecretTypeOpaque
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},
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func(r *core.RBDVolumeSource, c fuzz.Continue) {
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r.RBDPool = c.RandString()
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if r.RBDPool == "" {
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r.RBDPool = "rbd"
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}
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r.RadosUser = c.RandString()
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if r.RadosUser == "" {
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r.RadosUser = "admin"
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}
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r.Keyring = c.RandString()
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if r.Keyring == "" {
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r.Keyring = "/etc/ceph/keyring"
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}
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},
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func(r *core.RBDPersistentVolumeSource, c fuzz.Continue) {
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r.RBDPool = c.RandString()
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if r.RBDPool == "" {
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r.RBDPool = "rbd"
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}
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r.RadosUser = c.RandString()
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if r.RadosUser == "" {
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r.RadosUser = "admin"
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}
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r.Keyring = c.RandString()
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if r.Keyring == "" {
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r.Keyring = "/etc/ceph/keyring"
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}
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},
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func(obj *core.HostPathVolumeSource, c fuzz.Continue) {
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c.FuzzNoCustom(obj)
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types := []core.HostPathType{core.HostPathUnset, core.HostPathDirectoryOrCreate, core.HostPathDirectory,
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core.HostPathFileOrCreate, core.HostPathFile, core.HostPathSocket, core.HostPathCharDev, core.HostPathBlockDev}
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typeVol := types[c.Rand.Intn(len(types))]
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if obj.Type == nil {
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obj.Type = &typeVol
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}
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},
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func(pv *core.PersistentVolume, c fuzz.Continue) {
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c.FuzzNoCustom(pv) // fuzz self without calling this function again
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types := []core.PersistentVolumePhase{core.VolumeAvailable, core.VolumePending, core.VolumeBound, core.VolumeReleased, core.VolumeFailed}
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pv.Status.Phase = types[c.Rand.Intn(len(types))]
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pv.Status.Message = c.RandString()
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reclamationPolicies := []core.PersistentVolumeReclaimPolicy{core.PersistentVolumeReclaimRecycle, core.PersistentVolumeReclaimRetain}
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pv.Spec.PersistentVolumeReclaimPolicy = reclamationPolicies[c.Rand.Intn(len(reclamationPolicies))]
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volumeModes := []core.PersistentVolumeMode{core.PersistentVolumeFilesystem, core.PersistentVolumeBlock}
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pv.Spec.VolumeMode = &volumeModes[c.Rand.Intn(len(volumeModes))]
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},
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func(pvc *core.PersistentVolumeClaim, c fuzz.Continue) {
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c.FuzzNoCustom(pvc) // fuzz self without calling this function again
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types := []core.PersistentVolumeClaimPhase{core.ClaimBound, core.ClaimPending, core.ClaimLost}
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pvc.Status.Phase = types[c.Rand.Intn(len(types))]
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volumeModes := []core.PersistentVolumeMode{core.PersistentVolumeFilesystem, core.PersistentVolumeBlock}
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pvc.Spec.VolumeMode = &volumeModes[c.Rand.Intn(len(volumeModes))]
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},
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func(obj *core.AzureDiskVolumeSource, c fuzz.Continue) {
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if obj.CachingMode == nil {
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obj.CachingMode = new(core.AzureDataDiskCachingMode)
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*obj.CachingMode = core.AzureDataDiskCachingReadWrite
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}
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if obj.Kind == nil {
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obj.Kind = new(core.AzureDataDiskKind)
|
|
*obj.Kind = core.AzureSharedBlobDisk
|
|
}
|
|
if obj.FSType == nil {
|
|
obj.FSType = new(string)
|
|
*obj.FSType = "ext4"
|
|
}
|
|
if obj.ReadOnly == nil {
|
|
obj.ReadOnly = new(bool)
|
|
*obj.ReadOnly = false
|
|
}
|
|
},
|
|
func(sio *core.ScaleIOVolumeSource, c fuzz.Continue) {
|
|
sio.StorageMode = c.RandString()
|
|
if sio.StorageMode == "" {
|
|
sio.StorageMode = "ThinProvisioned"
|
|
}
|
|
sio.FSType = c.RandString()
|
|
if sio.FSType == "" {
|
|
sio.FSType = "xfs"
|
|
}
|
|
},
|
|
func(sio *core.ScaleIOPersistentVolumeSource, c fuzz.Continue) {
|
|
sio.StorageMode = c.RandString()
|
|
if sio.StorageMode == "" {
|
|
sio.StorageMode = "ThinProvisioned"
|
|
}
|
|
sio.FSType = c.RandString()
|
|
if sio.FSType == "" {
|
|
sio.FSType = "xfs"
|
|
}
|
|
},
|
|
func(s *core.NamespaceSpec, c fuzz.Continue) {
|
|
s.Finalizers = []core.FinalizerName{core.FinalizerKubernetes}
|
|
},
|
|
func(s *core.Namespace, c fuzz.Continue) {
|
|
c.FuzzNoCustom(s) // fuzz self without calling this function again
|
|
// Match name --> label defaulting
|
|
if len(s.Name) > 0 {
|
|
if s.Labels == nil {
|
|
s.Labels = map[string]string{}
|
|
}
|
|
s.Labels["kubernetes.io/metadata.name"] = s.Name
|
|
}
|
|
},
|
|
func(s *core.NamespaceStatus, c fuzz.Continue) {
|
|
s.Phase = core.NamespaceActive
|
|
},
|
|
func(http *core.HTTPGetAction, c fuzz.Continue) {
|
|
c.FuzzNoCustom(http) // fuzz self without calling this function again
|
|
http.Path = "/" + http.Path // can't be blank
|
|
http.Scheme = "x" + http.Scheme // can't be blank
|
|
},
|
|
func(ss *core.ServiceSpec, c fuzz.Continue) {
|
|
c.FuzzNoCustom(ss) // fuzz self without calling this function again
|
|
if len(ss.Ports) == 0 {
|
|
// There must be at least 1 port.
|
|
ss.Ports = append(ss.Ports, core.ServicePort{})
|
|
c.Fuzz(&ss.Ports[0])
|
|
}
|
|
for i := range ss.Ports {
|
|
switch ss.Ports[i].TargetPort.Type {
|
|
case intstr.Int:
|
|
ss.Ports[i].TargetPort.IntVal = 1 + ss.Ports[i].TargetPort.IntVal%65535 // non-zero
|
|
case intstr.String:
|
|
ss.Ports[i].TargetPort.StrVal = "x" + ss.Ports[i].TargetPort.StrVal // non-empty
|
|
}
|
|
}
|
|
types := []core.ServiceAffinity{core.ServiceAffinityNone, core.ServiceAffinityClientIP}
|
|
ss.SessionAffinity = types[c.Rand.Intn(len(types))]
|
|
switch ss.SessionAffinity {
|
|
case core.ServiceAffinityClientIP:
|
|
timeoutSeconds := int32(c.Rand.Intn(int(core.MaxClientIPServiceAffinitySeconds)))
|
|
ss.SessionAffinityConfig = &core.SessionAffinityConfig{
|
|
ClientIP: &core.ClientIPConfig{
|
|
TimeoutSeconds: &timeoutSeconds,
|
|
},
|
|
}
|
|
case core.ServiceAffinityNone:
|
|
ss.SessionAffinityConfig = nil
|
|
}
|
|
if ss.AllocateLoadBalancerNodePorts == nil {
|
|
ss.AllocateLoadBalancerNodePorts = utilpointer.Bool(true)
|
|
}
|
|
},
|
|
func(s *core.NodeStatus, c fuzz.Continue) {
|
|
c.FuzzNoCustom(s)
|
|
s.Allocatable = s.Capacity
|
|
},
|
|
func(e *core.Event, c fuzz.Continue) {
|
|
c.FuzzNoCustom(e)
|
|
e.EventTime = metav1.MicroTime{Time: time.Unix(1, 1000)}
|
|
if e.Series != nil {
|
|
e.Series.LastObservedTime = metav1.MicroTime{Time: time.Unix(3, 3000)}
|
|
}
|
|
},
|
|
func(j *core.GRPCAction, c fuzz.Continue) {
|
|
empty := ""
|
|
if j.Service == nil {
|
|
j.Service = &empty
|
|
}
|
|
},
|
|
func(j *core.LoadBalancerStatus, c fuzz.Continue) {
|
|
ipMode := core.LoadBalancerIPModeVIP
|
|
for i := range j.Ingress {
|
|
if j.Ingress[i].IPMode == nil {
|
|
j.Ingress[i].IPMode = &ipMode
|
|
}
|
|
}
|
|
},
|
|
}
|
|
}
|