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defaults_test.go
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defaults_test.go
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/*
Copyright 2015 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package v1_test
import (
"encoding/json"
"fmt"
"reflect"
"strings"
"testing"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/diff"
"k8s.io/apimachinery/pkg/util/intstr"
utilfeature "k8s.io/apiserver/pkg/util/feature"
featuregatetesting "k8s.io/component-base/featuregate/testing"
"k8s.io/kubernetes/pkg/api/legacyscheme"
corev1 "k8s.io/kubernetes/pkg/apis/core/v1"
"k8s.io/kubernetes/pkg/features"
utilpointer "k8s.io/utils/pointer"
// ensure types are installed
_ "k8s.io/kubernetes/pkg/apis/core/install"
)
// TestWorkloadDefaults detects changes to defaults within PodTemplateSpec.
// Defaulting changes within this type can cause spurious rollouts of workloads on API server update.
func TestWorkloadDefaults(t *testing.T) {
rc := &v1.ReplicationController{Spec: v1.ReplicationControllerSpec{Template: &v1.PodTemplateSpec{}}}
template := rc.Spec.Template
// New defaults under PodTemplateSpec are only acceptable if they would not be applied when reading data from a previous release.
// Forbidden: adding a new field `MyField *bool` and defaulting it to a non-nil value
// Forbidden: defaulting an existing field `MyField *bool` when it was previously not defaulted
// Forbidden: changing an existing default value
// Allowed: adding a new field `MyContainer *MyType` and defaulting a child of that type (e.g. `MyContainer.MyChildField`) if and only if MyContainer is non-nil
expectedDefaults := map[string]string{
".Spec.Containers[0].Env[0].ValueFrom.FieldRef.APIVersion": `"v1"`,
".Spec.Containers[0].ImagePullPolicy": `"IfNotPresent"`,
".Spec.Containers[0].Lifecycle.PostStart.HTTPGet.Path": `"/"`,
".Spec.Containers[0].Lifecycle.PostStart.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].Lifecycle.PreStop.HTTPGet.Path": `"/"`,
".Spec.Containers[0].Lifecycle.PreStop.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].LivenessProbe.FailureThreshold": `3`,
".Spec.Containers[0].LivenessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.Containers[0].LivenessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].LivenessProbe.PeriodSeconds": `10`,
".Spec.Containers[0].LivenessProbe.SuccessThreshold": `1`,
".Spec.Containers[0].LivenessProbe.TimeoutSeconds": `1`,
".Spec.Containers[0].Ports[0].Protocol": `"TCP"`,
".Spec.Containers[0].ReadinessProbe.FailureThreshold": `3`,
".Spec.Containers[0].ReadinessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.Containers[0].ReadinessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].ReadinessProbe.PeriodSeconds": `10`,
".Spec.Containers[0].ReadinessProbe.SuccessThreshold": `1`,
".Spec.Containers[0].ReadinessProbe.TimeoutSeconds": `1`,
".Spec.Containers[0].StartupProbe.FailureThreshold": "3",
".Spec.Containers[0].StartupProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.Containers[0].StartupProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].StartupProbe.PeriodSeconds": "10",
".Spec.Containers[0].StartupProbe.SuccessThreshold": "1",
".Spec.Containers[0].StartupProbe.TimeoutSeconds": "1",
".Spec.Containers[0].TerminationMessagePath": `"/dev/termination-log"`,
".Spec.Containers[0].TerminationMessagePolicy": `"File"`,
".Spec.DNSPolicy": `"ClusterFirst"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Env[0].ValueFrom.FieldRef.APIVersion": `"v1"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ImagePullPolicy": `"IfNotPresent"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Lifecycle.PostStart.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Lifecycle.PostStart.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Lifecycle.PreStop.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Lifecycle.PreStop.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.FailureThreshold": "3",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.PeriodSeconds": "10",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.SuccessThreshold": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.TimeoutSeconds": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Ports[0].Protocol": `"TCP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.FailureThreshold": "3",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.PeriodSeconds": "10",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.SuccessThreshold": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.TimeoutSeconds": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.FailureThreshold": "3",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.PeriodSeconds": "10",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.SuccessThreshold": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.TimeoutSeconds": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.TerminationMessagePath": `"/dev/termination-log"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.TerminationMessagePolicy": `"File"`,
".Spec.InitContainers[0].Env[0].ValueFrom.FieldRef.APIVersion": `"v1"`,
".Spec.InitContainers[0].ImagePullPolicy": `"IfNotPresent"`,
".Spec.InitContainers[0].Lifecycle.PostStart.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].Lifecycle.PostStart.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].Lifecycle.PreStop.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].Lifecycle.PreStop.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].LivenessProbe.FailureThreshold": `3`,
".Spec.InitContainers[0].LivenessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].LivenessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].LivenessProbe.PeriodSeconds": `10`,
".Spec.InitContainers[0].LivenessProbe.SuccessThreshold": `1`,
".Spec.InitContainers[0].LivenessProbe.TimeoutSeconds": `1`,
".Spec.InitContainers[0].Ports[0].Protocol": `"TCP"`,
".Spec.InitContainers[0].ReadinessProbe.FailureThreshold": `3`,
".Spec.InitContainers[0].ReadinessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].ReadinessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].ReadinessProbe.PeriodSeconds": `10`,
".Spec.InitContainers[0].ReadinessProbe.SuccessThreshold": `1`,
".Spec.InitContainers[0].ReadinessProbe.TimeoutSeconds": `1`,
".Spec.InitContainers[0].StartupProbe.FailureThreshold": "3",
".Spec.InitContainers[0].StartupProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].StartupProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].StartupProbe.PeriodSeconds": "10",
".Spec.InitContainers[0].StartupProbe.SuccessThreshold": "1",
".Spec.InitContainers[0].StartupProbe.TimeoutSeconds": "1",
".Spec.InitContainers[0].TerminationMessagePath": `"/dev/termination-log"`,
".Spec.InitContainers[0].TerminationMessagePolicy": `"File"`,
".Spec.RestartPolicy": `"Always"`,
".Spec.SchedulerName": `"default-scheduler"`,
".Spec.SecurityContext": `{}`,
".Spec.TerminationGracePeriodSeconds": `30`,
".Spec.Volumes[0].VolumeSource.AzureDisk.CachingMode": `"ReadWrite"`,
".Spec.Volumes[0].VolumeSource.AzureDisk.FSType": `"ext4"`,
".Spec.Volumes[0].VolumeSource.AzureDisk.Kind": `"Shared"`,
".Spec.Volumes[0].VolumeSource.AzureDisk.ReadOnly": `false`,
".Spec.Volumes[0].VolumeSource.ConfigMap.DefaultMode": `420`,
".Spec.Volumes[0].VolumeSource.DownwardAPI.DefaultMode": `420`,
".Spec.Volumes[0].VolumeSource.DownwardAPI.Items[0].FieldRef.APIVersion": `"v1"`,
".Spec.Volumes[0].VolumeSource.EmptyDir": `{}`,
".Spec.Volumes[0].VolumeSource.Ephemeral.VolumeClaimTemplate.Spec.VolumeMode": `"Filesystem"`,
".Spec.Volumes[0].VolumeSource.HostPath.Type": `""`,
".Spec.Volumes[0].VolumeSource.ISCSI.ISCSIInterface": `"default"`,
".Spec.Volumes[0].VolumeSource.Projected.DefaultMode": `420`,
".Spec.Volumes[0].VolumeSource.Projected.Sources[0].DownwardAPI.Items[0].FieldRef.APIVersion": `"v1"`,
".Spec.Volumes[0].VolumeSource.Projected.Sources[0].ServiceAccountToken.ExpirationSeconds": `3600`,
".Spec.Volumes[0].VolumeSource.RBD.Keyring": `"/etc/ceph/keyring"`,
".Spec.Volumes[0].VolumeSource.RBD.RBDPool": `"rbd"`,
".Spec.Volumes[0].VolumeSource.RBD.RadosUser": `"admin"`,
".Spec.Volumes[0].VolumeSource.ScaleIO.FSType": `"xfs"`,
".Spec.Volumes[0].VolumeSource.ScaleIO.StorageMode": `"ThinProvisioned"`,
".Spec.Volumes[0].VolumeSource.Secret.DefaultMode": `420`,
}
defaults := detectDefaults(t, rc, reflect.ValueOf(template))
if !reflect.DeepEqual(expectedDefaults, defaults) {
t.Errorf("Defaults for PodTemplateSpec changed. This can cause spurious rollouts of workloads on API server upgrade.")
t.Logf(diff.ObjectReflectDiff(expectedDefaults, defaults))
}
}
// TestPodDefaults detects changes to defaults within PodSpec.
// Defaulting changes within this type (*especially* within containers) can cause kubelets to restart containers on API server update.
func TestPodDefaults(t *testing.T) {
pod := &v1.Pod{}
// New defaults under PodSpec are only acceptable if they would not be applied when reading data from a previous release.
// Forbidden: adding a new field `MyField *bool` and defaulting it to a non-nil value
// Forbidden: defaulting an existing field `MyField *bool` when it was previously not defaulted
// Forbidden: changing an existing default value
// Allowed: adding a new field `MyContainer *MyType` and defaulting a child of that type (e.g. `MyContainer.MyChildField`) if and only if MyContainer is non-nil
expectedDefaults := map[string]string{
".Spec.Containers[0].Env[0].ValueFrom.FieldRef.APIVersion": `"v1"`,
".Spec.Containers[0].ImagePullPolicy": `"IfNotPresent"`,
".Spec.Containers[0].Lifecycle.PostStart.HTTPGet.Path": `"/"`,
".Spec.Containers[0].Lifecycle.PostStart.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].Lifecycle.PreStop.HTTPGet.Path": `"/"`,
".Spec.Containers[0].Lifecycle.PreStop.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].LivenessProbe.FailureThreshold": `3`,
".Spec.Containers[0].LivenessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.Containers[0].LivenessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].LivenessProbe.PeriodSeconds": `10`,
".Spec.Containers[0].LivenessProbe.SuccessThreshold": `1`,
".Spec.Containers[0].LivenessProbe.TimeoutSeconds": `1`,
".Spec.Containers[0].Ports[0].Protocol": `"TCP"`,
".Spec.Containers[0].ReadinessProbe.FailureThreshold": `3`,
".Spec.Containers[0].ReadinessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.Containers[0].ReadinessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].ReadinessProbe.PeriodSeconds": `10`,
".Spec.Containers[0].ReadinessProbe.SuccessThreshold": `1`,
".Spec.Containers[0].ReadinessProbe.TimeoutSeconds": `1`,
".Spec.Containers[0].Resources.Requests": `{"":"0"}`, // this gets defaulted from the limits field
".Spec.Containers[0].StartupProbe.FailureThreshold": "3",
".Spec.Containers[0].StartupProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.Containers[0].StartupProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.Containers[0].StartupProbe.PeriodSeconds": "10",
".Spec.Containers[0].StartupProbe.SuccessThreshold": "1",
".Spec.Containers[0].StartupProbe.TimeoutSeconds": "1",
".Spec.Containers[0].TerminationMessagePath": `"/dev/termination-log"`,
".Spec.Containers[0].TerminationMessagePolicy": `"File"`,
".Spec.DNSPolicy": `"ClusterFirst"`,
".Spec.EnableServiceLinks": `true`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Env[0].ValueFrom.FieldRef.APIVersion": `"v1"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ImagePullPolicy": `"IfNotPresent"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Lifecycle.PostStart.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Lifecycle.PostStart.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Lifecycle.PreStop.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Lifecycle.PreStop.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.FailureThreshold": "3",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.PeriodSeconds": "10",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.SuccessThreshold": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.LivenessProbe.TimeoutSeconds": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.Ports[0].Protocol": `"TCP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.FailureThreshold": "3",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.PeriodSeconds": "10",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.SuccessThreshold": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.ReadinessProbe.TimeoutSeconds": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.FailureThreshold": "3",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.PeriodSeconds": "10",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.SuccessThreshold": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.StartupProbe.TimeoutSeconds": "1",
".Spec.EphemeralContainers[0].EphemeralContainerCommon.TerminationMessagePath": `"/dev/termination-log"`,
".Spec.EphemeralContainers[0].EphemeralContainerCommon.TerminationMessagePolicy": `"File"`,
".Spec.InitContainers[0].Env[0].ValueFrom.FieldRef.APIVersion": `"v1"`,
".Spec.InitContainers[0].ImagePullPolicy": `"IfNotPresent"`,
".Spec.InitContainers[0].Lifecycle.PostStart.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].Lifecycle.PostStart.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].Lifecycle.PreStop.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].Lifecycle.PreStop.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].LivenessProbe.FailureThreshold": `3`,
".Spec.InitContainers[0].LivenessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].LivenessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].LivenessProbe.PeriodSeconds": `10`,
".Spec.InitContainers[0].LivenessProbe.SuccessThreshold": `1`,
".Spec.InitContainers[0].LivenessProbe.TimeoutSeconds": `1`,
".Spec.InitContainers[0].Ports[0].Protocol": `"TCP"`,
".Spec.InitContainers[0].ReadinessProbe.FailureThreshold": `3`,
".Spec.InitContainers[0].ReadinessProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].ReadinessProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].ReadinessProbe.PeriodSeconds": `10`,
".Spec.InitContainers[0].ReadinessProbe.SuccessThreshold": `1`,
".Spec.InitContainers[0].ReadinessProbe.TimeoutSeconds": `1`,
".Spec.InitContainers[0].Resources.Requests": `{"":"0"}`, // this gets defaulted from the limits field
".Spec.InitContainers[0].TerminationMessagePath": `"/dev/termination-log"`,
".Spec.InitContainers[0].TerminationMessagePolicy": `"File"`,
".Spec.InitContainers[0].StartupProbe.FailureThreshold": "3",
".Spec.InitContainers[0].StartupProbe.Handler.HTTPGet.Path": `"/"`,
".Spec.InitContainers[0].StartupProbe.Handler.HTTPGet.Scheme": `"HTTP"`,
".Spec.InitContainers[0].StartupProbe.PeriodSeconds": "10",
".Spec.InitContainers[0].StartupProbe.SuccessThreshold": "1",
".Spec.InitContainers[0].StartupProbe.TimeoutSeconds": "1",
".Spec.RestartPolicy": `"Always"`,
".Spec.SchedulerName": `"default-scheduler"`,
".Spec.SecurityContext": `{}`,
".Spec.TerminationGracePeriodSeconds": `30`,
".Spec.Volumes[0].VolumeSource.AzureDisk.CachingMode": `"ReadWrite"`,
".Spec.Volumes[0].VolumeSource.AzureDisk.FSType": `"ext4"`,
".Spec.Volumes[0].VolumeSource.AzureDisk.Kind": `"Shared"`,
".Spec.Volumes[0].VolumeSource.AzureDisk.ReadOnly": `false`,
".Spec.Volumes[0].VolumeSource.ConfigMap.DefaultMode": `420`,
".Spec.Volumes[0].VolumeSource.DownwardAPI.DefaultMode": `420`,
".Spec.Volumes[0].VolumeSource.DownwardAPI.Items[0].FieldRef.APIVersion": `"v1"`,
".Spec.Volumes[0].VolumeSource.EmptyDir": `{}`,
".Spec.Volumes[0].VolumeSource.Ephemeral.VolumeClaimTemplate.Spec.VolumeMode": `"Filesystem"`,
".Spec.Volumes[0].VolumeSource.HostPath.Type": `""`,
".Spec.Volumes[0].VolumeSource.ISCSI.ISCSIInterface": `"default"`,
".Spec.Volumes[0].VolumeSource.Projected.DefaultMode": `420`,
".Spec.Volumes[0].VolumeSource.Projected.Sources[0].DownwardAPI.Items[0].FieldRef.APIVersion": `"v1"`,
".Spec.Volumes[0].VolumeSource.Projected.Sources[0].ServiceAccountToken.ExpirationSeconds": `3600`,
".Spec.Volumes[0].VolumeSource.RBD.Keyring": `"/etc/ceph/keyring"`,
".Spec.Volumes[0].VolumeSource.RBD.RBDPool": `"rbd"`,
".Spec.Volumes[0].VolumeSource.RBD.RadosUser": `"admin"`,
".Spec.Volumes[0].VolumeSource.ScaleIO.FSType": `"xfs"`,
".Spec.Volumes[0].VolumeSource.ScaleIO.StorageMode": `"ThinProvisioned"`,
".Spec.Volumes[0].VolumeSource.Secret.DefaultMode": `420`,
}
defaults := detectDefaults(t, pod, reflect.ValueOf(pod))
if !reflect.DeepEqual(expectedDefaults, defaults) {
t.Errorf("Defaults for PodSpec changed. This can cause spurious restarts of containers on API server upgrade.")
t.Logf(diff.ObjectReflectDiff(expectedDefaults, defaults))
}
}
type testPath struct {
path string
value reflect.Value
}
func detectDefaults(t *testing.T, obj runtime.Object, v reflect.Value) map[string]string {
defaults := map[string]string{}
toVisit := []testPath{{path: "", value: v}}
for len(toVisit) > 0 {
visit := toVisit[0]
toVisit = toVisit[1:]
legacyscheme.Scheme.Default(obj)
defaultedV := visit.value
zeroV := reflect.Zero(visit.value.Type())
switch {
case visit.value.Kind() == reflect.Struct:
for fi := 0; fi < visit.value.NumField(); fi++ {
structField := visit.value.Type().Field(fi)
valueField := visit.value.Field(fi)
if valueField.CanSet() {
toVisit = append(toVisit, testPath{path: visit.path + "." + structField.Name, value: valueField})
}
}
case visit.value.Kind() == reflect.Slice:
if !visit.value.IsNil() {
// if we already have a value, we got defaulted
marshaled, _ := json.Marshal(defaultedV.Interface())
defaults[visit.path] = string(marshaled)
} else if visit.value.Type().Elem().Kind() == reflect.Struct {
if strings.HasPrefix(visit.path, ".ObjectMeta.ManagedFields[") {
break
}
// if we don't already have a value, and contain structs, add an empty item so we can recurse
item := reflect.New(visit.value.Type().Elem()).Elem()
visit.value.Set(reflect.Append(visit.value, item))
toVisit = append(toVisit, testPath{path: visit.path + "[0]", value: visit.value.Index(0)})
} else if !isPrimitive(visit.value.Type().Elem().Kind()) {
t.Logf("unhandled non-primitive slice type %s: %s", visit.path, visit.value.Type().Elem())
}
case visit.value.Kind() == reflect.Map:
if !visit.value.IsNil() {
// if we already have a value, we got defaulted
marshaled, _ := json.Marshal(defaultedV.Interface())
defaults[visit.path] = string(marshaled)
} else if visit.value.Type().Key().Kind() == reflect.String && visit.value.Type().Elem().Kind() == reflect.Struct {
if strings.HasPrefix(visit.path, ".ObjectMeta.ManagedFields[") {
break
}
// if we don't already have a value, and contain structs, add an empty item so we can recurse
item := reflect.New(visit.value.Type().Elem()).Elem()
visit.value.Set(reflect.MakeMap(visit.value.Type()))
visit.value.SetMapIndex(reflect.New(visit.value.Type().Key()).Elem(), item)
toVisit = append(toVisit, testPath{path: visit.path + "[*]", value: item})
} else if !isPrimitive(visit.value.Type().Elem().Kind()) {
t.Logf("unhandled non-primitive map type %s: %s", visit.path, visit.value.Type().Elem())
}
case visit.value.Kind() == reflect.Ptr:
if visit.value.IsNil() {
if visit.value.Type().Elem().Kind() == reflect.Struct {
visit.value.Set(reflect.New(visit.value.Type().Elem()))
toVisit = append(toVisit, testPath{path: visit.path, value: visit.value.Elem()})
} else if !isPrimitive(visit.value.Type().Elem().Kind()) {
t.Errorf("unhandled non-primitive nil ptr: %s: %s", visit.path, visit.value.Type())
}
} else {
if visit.path != "" {
marshaled, _ := json.Marshal(defaultedV.Interface())
defaults[visit.path] = string(marshaled)
}
toVisit = append(toVisit, testPath{path: visit.path, value: visit.value.Elem()})
}
case isPrimitive(visit.value.Kind()):
if !reflect.DeepEqual(defaultedV.Interface(), zeroV.Interface()) {
marshaled, _ := json.Marshal(defaultedV.Interface())
defaults[visit.path] = string(marshaled)
}
default:
t.Errorf("unhandled kind: %s: %s", visit.path, visit.value.Type())
}
}
return defaults
}
func isPrimitive(k reflect.Kind) bool {
switch k {
case reflect.String, reflect.Bool, reflect.Int32, reflect.Int64, reflect.Int:
return true
default:
return false
}
}
func roundTrip(t *testing.T, obj runtime.Object) runtime.Object {
codec := legacyscheme.Codecs.LegacyCodec(corev1.SchemeGroupVersion)
data, err := runtime.Encode(codec, obj)
if err != nil {
t.Errorf("%v\n %#v", err, obj)
return nil
}
obj2, err := runtime.Decode(codec, data)
if err != nil {
t.Errorf("%v\nData: %s\nSource: %#v", err, string(data), obj)
return nil
}
obj3 := reflect.New(reflect.TypeOf(obj).Elem()).Interface().(runtime.Object)
err = legacyscheme.Scheme.Convert(obj2, obj3, nil)
if err != nil {
t.Errorf("%v\nSource: %#v", err, obj2)
return nil
}
return obj3
}
func TestSetDefaultReplicationController(t *testing.T) {
tests := []struct {
rc *v1.ReplicationController
expectLabels bool
expectSelector bool
}{
{
rc: &v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"foo": "bar",
},
},
},
},
},
expectLabels: true,
expectSelector: true,
},
{
rc: &v1.ReplicationController{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"bar": "foo",
},
},
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"foo": "bar",
},
},
},
},
},
expectLabels: false,
expectSelector: true,
},
{
rc: &v1.ReplicationController{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"bar": "foo",
},
},
Spec: v1.ReplicationControllerSpec{
Selector: map[string]string{
"some": "other",
},
Template: &v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"foo": "bar",
},
},
},
},
},
expectLabels: false,
expectSelector: false,
},
{
rc: &v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Selector: map[string]string{
"some": "other",
},
Template: &v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"foo": "bar",
},
},
},
},
},
expectLabels: true,
expectSelector: false,
},
}
for _, test := range tests {
rc := test.rc
obj2 := roundTrip(t, runtime.Object(rc))
rc2, ok := obj2.(*v1.ReplicationController)
if !ok {
t.Errorf("unexpected object: %v", rc2)
t.FailNow()
}
if test.expectSelector != reflect.DeepEqual(rc2.Spec.Selector, rc2.Spec.Template.Labels) {
if test.expectSelector {
t.Errorf("expected: %v, got: %v", rc2.Spec.Template.Labels, rc2.Spec.Selector)
} else {
t.Errorf("unexpected equality: %v", rc.Spec.Selector)
}
}
if test.expectLabels != reflect.DeepEqual(rc2.Labels, rc2.Spec.Template.Labels) {
if test.expectLabels {
t.Errorf("expected: %v, got: %v", rc2.Spec.Template.Labels, rc2.Labels)
} else {
t.Errorf("unexpected equality: %v", rc.Labels)
}
}
}
}
func TestSetDefaultReplicationControllerReplicas(t *testing.T) {
tests := []struct {
rc v1.ReplicationController
expectReplicas int32
}{
{
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"foo": "bar",
},
},
},
},
},
expectReplicas: 1,
},
{
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Replicas: utilpointer.Int32Ptr(0),
Template: &v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"foo": "bar",
},
},
},
},
},
expectReplicas: 0,
},
{
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Replicas: utilpointer.Int32Ptr(3),
Template: &v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: map[string]string{
"foo": "bar",
},
},
},
},
},
expectReplicas: 3,
},
}
for _, test := range tests {
rc := &test.rc
obj2 := roundTrip(t, runtime.Object(rc))
rc2, ok := obj2.(*v1.ReplicationController)
if !ok {
t.Errorf("unexpected object: %v", rc2)
t.FailNow()
}
if rc2.Spec.Replicas == nil {
t.Errorf("unexpected nil Replicas")
} else if test.expectReplicas != *rc2.Spec.Replicas {
t.Errorf("expected: %d replicas, got: %d", test.expectReplicas, *rc2.Spec.Replicas)
}
}
}
type InitContainerValidator func(got, expected *v1.Container) error
func TestSetDefaultReplicationControllerInitContainers(t *testing.T) {
assertEnvFieldRef := func(got, expected *v1.Container) error {
if len(got.Env) != len(expected.Env) {
return fmt.Errorf("different number of env: got <%v>, expected <%v>", len(got.Env), len(expected.Env))
}
for j := range got.Env {
ge := &got.Env[j]
ee := &expected.Env[j]
if ge.Name != ee.Name {
return fmt.Errorf("different name of env: got <%v>, expected <%v>", ge.Name, ee.Name)
}
if ge.ValueFrom.FieldRef.APIVersion != ee.ValueFrom.FieldRef.APIVersion {
return fmt.Errorf("different api version of FieldRef <%v>: got <%v>, expected <%v>",
ge.Name, ge.ValueFrom.FieldRef.APIVersion, ee.ValueFrom.FieldRef.APIVersion)
}
}
return nil
}
assertImagePullPolicy := func(got, expected *v1.Container) error {
if got.ImagePullPolicy != expected.ImagePullPolicy {
return fmt.Errorf("different image pull policy: got <%v>, expected <%v>", got.ImagePullPolicy, expected.ImagePullPolicy)
}
return nil
}
assertContainerPort := func(got, expected *v1.Container) error {
if len(got.Ports) != len(expected.Ports) {
return fmt.Errorf("different number of ports: got <%v>, expected <%v>", len(got.Ports), len(expected.Ports))
}
for i := range got.Ports {
gp := &got.Ports[i]
ep := &expected.Ports[i]
if gp.Name != ep.Name {
return fmt.Errorf("different name of port: got <%v>, expected <%v>", gp.Name, ep.Name)
}
if gp.Protocol != ep.Protocol {
return fmt.Errorf("different port protocol <%v>: got <%v>, expected <%v>", gp.Name, gp.Protocol, ep.Protocol)
}
}
return nil
}
assertResource := func(got, expected *v1.Container) error {
if len(got.Resources.Limits) != len(expected.Resources.Limits) {
return fmt.Errorf("different number of resources.Limits: got <%v>, expected <%v>", len(got.Resources.Limits), (expected.Resources.Limits))
}
for k, v := range got.Resources.Limits {
if ev, found := expected.Resources.Limits[v1.ResourceName(k)]; !found {
return fmt.Errorf("failed to find resource <%v> in expected resources.Limits.", k)
} else {
if ev.Value() != v.Value() {
return fmt.Errorf("different resource.Limits: got <%v>, expected <%v>.", v.Value(), ev.Value())
}
}
}
if len(got.Resources.Requests) != len(expected.Resources.Requests) {
return fmt.Errorf("different number of resources.Requests: got <%v>, expected <%v>", len(got.Resources.Requests), (expected.Resources.Requests))
}
for k, v := range got.Resources.Requests {
if ev, found := expected.Resources.Requests[v1.ResourceName(k)]; !found {
return fmt.Errorf("failed to find resource <%v> in expected resources.Requests.", k)
} else {
if ev.Value() != v.Value() {
return fmt.Errorf("different resource.Requests: got <%v>, expected <%v>.", v.Value(), ev.Value())
}
}
}
return nil
}
assertProb := func(got, expected *v1.Container) error {
// Assert LivenessProbe
if got.LivenessProbe.Handler.HTTPGet.Path != expected.LivenessProbe.Handler.HTTPGet.Path ||
got.LivenessProbe.Handler.HTTPGet.Scheme != expected.LivenessProbe.Handler.HTTPGet.Scheme ||
got.LivenessProbe.FailureThreshold != expected.LivenessProbe.FailureThreshold ||
got.LivenessProbe.SuccessThreshold != expected.LivenessProbe.SuccessThreshold ||
got.LivenessProbe.PeriodSeconds != expected.LivenessProbe.PeriodSeconds ||
got.LivenessProbe.TimeoutSeconds != expected.LivenessProbe.TimeoutSeconds {
return fmt.Errorf("different LivenessProbe: got <%v>, expected <%v>", got.LivenessProbe, expected.LivenessProbe)
}
// Assert ReadinessProbe
if got.ReadinessProbe.Handler.HTTPGet.Path != expected.ReadinessProbe.Handler.HTTPGet.Path ||
got.ReadinessProbe.Handler.HTTPGet.Scheme != expected.ReadinessProbe.Handler.HTTPGet.Scheme ||
got.ReadinessProbe.FailureThreshold != expected.ReadinessProbe.FailureThreshold ||
got.ReadinessProbe.SuccessThreshold != expected.ReadinessProbe.SuccessThreshold ||
got.ReadinessProbe.PeriodSeconds != expected.ReadinessProbe.PeriodSeconds ||
got.ReadinessProbe.TimeoutSeconds != expected.ReadinessProbe.TimeoutSeconds {
return fmt.Errorf("different ReadinessProbe: got <%v>, expected <%v>", got.ReadinessProbe, expected.ReadinessProbe)
}
return nil
}
assertLifeCycle := func(got, expected *v1.Container) error {
if got.Lifecycle.PostStart.HTTPGet.Path != expected.Lifecycle.PostStart.HTTPGet.Path ||
got.Lifecycle.PostStart.HTTPGet.Scheme != expected.Lifecycle.PostStart.HTTPGet.Scheme {
return fmt.Errorf("different LifeCycle: got <%v>, expected <%v>", got.Lifecycle, expected.Lifecycle)
}
return nil
}
cpu, _ := resource.ParseQuantity("100m")
mem, _ := resource.ParseQuantity("100Mi")
tests := []struct {
name string
rc v1.ReplicationController
expected []v1.Container
validators []InitContainerValidator
}{
{
name: "imagePullIPolicy",
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
Spec: v1.PodSpec{
InitContainers: []v1.Container{
{
Name: "install",
Image: "busybox",
},
},
},
},
},
},
expected: []v1.Container{
{
ImagePullPolicy: v1.PullAlways,
},
},
validators: []InitContainerValidator{assertImagePullPolicy},
},
{
name: "FieldRef",
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
Spec: v1.PodSpec{
InitContainers: []v1.Container{
{
Name: "fun",
Image: "alpine",
Env: []v1.EnvVar{
{
Name: "MY_POD_IP",
ValueFrom: &v1.EnvVarSource{
FieldRef: &v1.ObjectFieldSelector{
APIVersion: "",
FieldPath: "status.podIP",
},
},
},
},
},
},
},
},
},
},
expected: []v1.Container{
{
Env: []v1.EnvVar{
{
Name: "MY_POD_IP",
ValueFrom: &v1.EnvVarSource{
FieldRef: &v1.ObjectFieldSelector{
APIVersion: "v1",
FieldPath: "status.podIP",
},
},
},
},
},
},
validators: []InitContainerValidator{assertEnvFieldRef},
},
{
name: "ContainerPort",
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
Spec: v1.PodSpec{
InitContainers: []v1.Container{
{
Name: "fun",
Image: "alpine",
Ports: []v1.ContainerPort{
{
Name: "default",
},
},
},
},
},
},
},
},
expected: []v1.Container{
{
Ports: []v1.ContainerPort{
{
Name: "default",
Protocol: v1.ProtocolTCP,
},
},
},
},
validators: []InitContainerValidator{assertContainerPort},
},
{
name: "Resources",
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
Spec: v1.PodSpec{
InitContainers: []v1.Container{
{
Name: "fun",
Image: "alpine",
Resources: v1.ResourceRequirements{
Limits: v1.ResourceList{
v1.ResourceCPU: resource.MustParse("100m"),
v1.ResourceMemory: resource.MustParse("100Mi"),
},
Requests: v1.ResourceList{
v1.ResourceCPU: resource.MustParse("100m"),
v1.ResourceMemory: resource.MustParse("100Mi"),
},
},
},
},
},
},
},
},
expected: []v1.Container{
{
Resources: v1.ResourceRequirements{
Limits: v1.ResourceList{
v1.ResourceCPU: cpu,
v1.ResourceMemory: mem,
},
Requests: v1.ResourceList{
v1.ResourceCPU: cpu,
v1.ResourceMemory: mem,
},
},
},
},
validators: []InitContainerValidator{assertResource},
},
{
name: "Probe",
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
Spec: v1.PodSpec{
InitContainers: []v1.Container{
{
Name: "fun",
Image: "alpine",
LivenessProbe: &v1.Probe{
Handler: v1.Handler{
HTTPGet: &v1.HTTPGetAction{
Host: "localhost",
},
},
},
ReadinessProbe: &v1.Probe{
Handler: v1.Handler{
HTTPGet: &v1.HTTPGetAction{
Host: "localhost",
},
},
},
},
},
},
},
},
},
expected: []v1.Container{
{
LivenessProbe: &v1.Probe{
Handler: v1.Handler{
HTTPGet: &v1.HTTPGetAction{
Path: "/",
Scheme: v1.URISchemeHTTP,
},
},
TimeoutSeconds: 1,
PeriodSeconds: 10,
SuccessThreshold: 1,
FailureThreshold: 3,
},
ReadinessProbe: &v1.Probe{
Handler: v1.Handler{
HTTPGet: &v1.HTTPGetAction{
Path: "/",
Scheme: v1.URISchemeHTTP,
},
},
TimeoutSeconds: 1,
PeriodSeconds: 10,
SuccessThreshold: 1,
FailureThreshold: 3,
},
},
},
validators: []InitContainerValidator{assertProb},
},
{
name: "LifeCycle",
rc: v1.ReplicationController{
Spec: v1.ReplicationControllerSpec{
Template: &v1.PodTemplateSpec{
Spec: v1.PodSpec{
InitContainers: []v1.Container{
{
Name: "fun",
Image: "alpine",
Ports: []v1.ContainerPort{
{
Name: "default",
},
},
Lifecycle: &v1.Lifecycle{
PostStart: &v1.Handler{
HTTPGet: &v1.HTTPGetAction{
Host: "localhost",
},
},
PreStop: &v1.Handler{
HTTPGet: &v1.HTTPGetAction{
Host: "localhost",
},
},
},
},
},
},
},
},
},
expected: []v1.Container{
{
Lifecycle: &v1.Lifecycle{
PostStart: &v1.Handler{
HTTPGet: &v1.HTTPGetAction{
Path: "/",
Scheme: v1.URISchemeHTTP,
},
},
PreStop: &v1.Handler{
HTTPGet: &v1.HTTPGetAction{
Path: "/",
Scheme: v1.URISchemeHTTP,
},
},
},
},
},
validators: []InitContainerValidator{assertLifeCycle},
},
}
assertInitContainers := func(got, expected []v1.Container, validators []InitContainerValidator) error {
if len(got) != len(expected) {
return fmt.Errorf("different number of init container: got <%d>, expected <%d>",
len(got), len(expected))
}
for i := range got {
g := &got[i]
e := &expected[i]
for _, validator := range validators {
if err := validator(g, e); err != nil {
return err
}
}
}
return nil
}
for _, test := range tests {
rc := &test.rc
obj2 := roundTrip(t, runtime.Object(rc))
rc2, ok := obj2.(*v1.ReplicationController)
if !ok {