350 lines
9.3 KiB
Go
350 lines
9.3 KiB
Go
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/*
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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 v1
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import (
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/util"
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"k8s.io/kubernetes/pkg/util/intstr"
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"k8s.io/kubernetes/pkg/util/parsers"
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)
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func addDefaultingFuncs(scheme *runtime.Scheme) error {
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RegisterDefaults(scheme)
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return scheme.AddDefaultingFuncs(
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SetDefaults_PodExecOptions,
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SetDefaults_PodAttachOptions,
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SetDefaults_ReplicationController,
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SetDefaults_Volume,
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SetDefaults_ContainerPort,
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SetDefaults_Container,
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SetDefaults_ServiceSpec,
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SetDefaults_Pod,
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SetDefaults_PodSpec,
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SetDefaults_Probe,
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SetDefaults_SecretVolumeSource,
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SetDefaults_ConfigMapVolumeSource,
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SetDefaults_DownwardAPIVolumeSource,
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SetDefaults_Secret,
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SetDefaults_PersistentVolume,
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SetDefaults_PersistentVolumeClaim,
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SetDefaults_ISCSIVolumeSource,
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SetDefaults_Endpoints,
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SetDefaults_HTTPGetAction,
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SetDefaults_NamespaceStatus,
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SetDefaults_Node,
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SetDefaults_NodeStatus,
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SetDefaults_ObjectFieldSelector,
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SetDefaults_LimitRangeItem,
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SetDefaults_ConfigMap,
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SetDefaults_RBDVolumeSource,
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SetDefaults_ResourceList,
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)
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}
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func SetDefaults_ResourceList(obj *ResourceList) {
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for key, val := range *obj {
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// TODO(#18538): We round up resource values to milli scale to maintain API compatibility.
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// In the future, we should instead reject values that need rounding.
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const milliScale = -3
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val.RoundUp(milliScale)
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(*obj)[ResourceName(key)] = val
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}
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}
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func SetDefaults_PodExecOptions(obj *PodExecOptions) {
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obj.Stdout = true
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obj.Stderr = true
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}
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func SetDefaults_PodAttachOptions(obj *PodAttachOptions) {
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obj.Stdout = true
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obj.Stderr = true
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}
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func SetDefaults_ReplicationController(obj *ReplicationController) {
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var labels map[string]string
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if obj.Spec.Template != nil {
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labels = obj.Spec.Template.Labels
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}
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// TODO: support templates defined elsewhere when we support them in the API
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if labels != nil {
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if len(obj.Spec.Selector) == 0 {
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obj.Spec.Selector = labels
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}
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if len(obj.Labels) == 0 {
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obj.Labels = labels
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}
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}
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if obj.Spec.Replicas == nil {
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obj.Spec.Replicas = new(int32)
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*obj.Spec.Replicas = 1
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}
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}
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func SetDefaults_Volume(obj *Volume) {
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if util.AllPtrFieldsNil(&obj.VolumeSource) {
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obj.VolumeSource = VolumeSource{
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EmptyDir: &EmptyDirVolumeSource{},
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}
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}
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}
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func SetDefaults_ContainerPort(obj *ContainerPort) {
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if obj.Protocol == "" {
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obj.Protocol = ProtocolTCP
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}
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}
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func SetDefaults_Container(obj *Container) {
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if obj.ImagePullPolicy == "" {
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// Ignore error and assume it has been validated elsewhere
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_, tag, _, _ := parsers.ParseImageName(obj.Image)
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// Check image tag
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if tag == "latest" {
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obj.ImagePullPolicy = PullAlways
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} else {
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obj.ImagePullPolicy = PullIfNotPresent
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}
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}
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if obj.TerminationMessagePath == "" {
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obj.TerminationMessagePath = TerminationMessagePathDefault
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}
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}
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func SetDefaults_ServiceSpec(obj *ServiceSpec) {
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if obj.SessionAffinity == "" {
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obj.SessionAffinity = ServiceAffinityNone
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}
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if obj.Type == "" {
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obj.Type = ServiceTypeClusterIP
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}
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for i := range obj.Ports {
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sp := &obj.Ports[i]
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if sp.Protocol == "" {
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sp.Protocol = ProtocolTCP
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}
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if sp.TargetPort == intstr.FromInt(0) || sp.TargetPort == intstr.FromString("") {
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sp.TargetPort = intstr.FromInt(int(sp.Port))
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}
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}
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}
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func SetDefaults_Pod(obj *Pod) {
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// If limits are specified, but requests are not, default requests to limits
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// This is done here rather than a more specific defaulting pass on ResourceRequirements
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// because we only want this defaulting semantic to take place on a Pod and not a PodTemplate
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for i := range obj.Spec.Containers {
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// set requests to limits if requests are not specified, but limits are
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if obj.Spec.Containers[i].Resources.Limits != nil {
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if obj.Spec.Containers[i].Resources.Requests == nil {
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obj.Spec.Containers[i].Resources.Requests = make(ResourceList)
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}
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for key, value := range obj.Spec.Containers[i].Resources.Limits {
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if _, exists := obj.Spec.Containers[i].Resources.Requests[key]; !exists {
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obj.Spec.Containers[i].Resources.Requests[key] = *(value.Copy())
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}
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}
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}
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}
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}
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func SetDefaults_PodSpec(obj *PodSpec) {
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if obj.DNSPolicy == "" {
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obj.DNSPolicy = DNSClusterFirst
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}
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if obj.RestartPolicy == "" {
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obj.RestartPolicy = RestartPolicyAlways
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}
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if obj.HostNetwork {
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defaultHostNetworkPorts(&obj.Containers)
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}
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if obj.SecurityContext == nil {
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obj.SecurityContext = &PodSecurityContext{}
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}
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if obj.TerminationGracePeriodSeconds == nil {
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period := int64(DefaultTerminationGracePeriodSeconds)
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obj.TerminationGracePeriodSeconds = &period
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}
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}
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func SetDefaults_Probe(obj *Probe) {
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if obj.TimeoutSeconds == 0 {
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obj.TimeoutSeconds = 1
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}
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if obj.PeriodSeconds == 0 {
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obj.PeriodSeconds = 10
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}
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if obj.SuccessThreshold == 0 {
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obj.SuccessThreshold = 1
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}
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if obj.FailureThreshold == 0 {
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obj.FailureThreshold = 3
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}
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}
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func SetDefaults_SecretVolumeSource(obj *SecretVolumeSource) {
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if obj.DefaultMode == nil {
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perm := int32(SecretVolumeSourceDefaultMode)
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obj.DefaultMode = &perm
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}
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}
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func SetDefaults_ConfigMapVolumeSource(obj *ConfigMapVolumeSource) {
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if obj.DefaultMode == nil {
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perm := int32(ConfigMapVolumeSourceDefaultMode)
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obj.DefaultMode = &perm
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}
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}
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func SetDefaults_DownwardAPIVolumeSource(obj *DownwardAPIVolumeSource) {
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if obj.DefaultMode == nil {
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perm := int32(DownwardAPIVolumeSourceDefaultMode)
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obj.DefaultMode = &perm
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}
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}
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func SetDefaults_Secret(obj *Secret) {
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if obj.Type == "" {
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obj.Type = SecretTypeOpaque
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}
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}
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func SetDefaults_PersistentVolume(obj *PersistentVolume) {
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if obj.Status.Phase == "" {
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obj.Status.Phase = VolumePending
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}
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if obj.Spec.PersistentVolumeReclaimPolicy == "" {
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obj.Spec.PersistentVolumeReclaimPolicy = PersistentVolumeReclaimRetain
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}
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}
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func SetDefaults_PersistentVolumeClaim(obj *PersistentVolumeClaim) {
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if obj.Status.Phase == "" {
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obj.Status.Phase = ClaimPending
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}
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}
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func SetDefaults_ISCSIVolumeSource(obj *ISCSIVolumeSource) {
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if obj.ISCSIInterface == "" {
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obj.ISCSIInterface = "default"
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}
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}
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func SetDefaults_AzureDiskVolumeSource(obj *AzureDiskVolumeSource) {
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if obj.CachingMode == nil {
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obj.CachingMode = new(AzureDataDiskCachingMode)
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*obj.CachingMode = AzureDataDiskCachingNone
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}
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if obj.FSType == nil {
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obj.FSType = new(string)
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*obj.FSType = "ext4"
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}
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if obj.ReadOnly == nil {
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obj.ReadOnly = new(bool)
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*obj.ReadOnly = false
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}
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}
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func SetDefaults_Endpoints(obj *Endpoints) {
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for i := range obj.Subsets {
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ss := &obj.Subsets[i]
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for i := range ss.Ports {
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ep := &ss.Ports[i]
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if ep.Protocol == "" {
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ep.Protocol = ProtocolTCP
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}
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}
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}
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}
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func SetDefaults_HTTPGetAction(obj *HTTPGetAction) {
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if obj.Path == "" {
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obj.Path = "/"
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}
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if obj.Scheme == "" {
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obj.Scheme = URISchemeHTTP
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}
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}
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func SetDefaults_NamespaceStatus(obj *NamespaceStatus) {
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if obj.Phase == "" {
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obj.Phase = NamespaceActive
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}
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}
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func SetDefaults_Node(obj *Node) {
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if obj.Spec.ExternalID == "" {
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obj.Spec.ExternalID = obj.Name
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}
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}
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func SetDefaults_NodeStatus(obj *NodeStatus) {
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if obj.Allocatable == nil && obj.Capacity != nil {
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obj.Allocatable = make(ResourceList, len(obj.Capacity))
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for key, value := range obj.Capacity {
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obj.Allocatable[key] = *(value.Copy())
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}
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obj.Allocatable = obj.Capacity
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}
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}
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func SetDefaults_ObjectFieldSelector(obj *ObjectFieldSelector) {
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if obj.APIVersion == "" {
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obj.APIVersion = "v1"
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}
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}
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func SetDefaults_LimitRangeItem(obj *LimitRangeItem) {
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// for container limits, we apply default values
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if obj.Type == LimitTypeContainer {
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if obj.Default == nil {
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obj.Default = make(ResourceList)
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}
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if obj.DefaultRequest == nil {
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obj.DefaultRequest = make(ResourceList)
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}
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// If a default limit is unspecified, but the max is specified, default the limit to the max
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for key, value := range obj.Max {
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if _, exists := obj.Default[key]; !exists {
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obj.Default[key] = *(value.Copy())
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}
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}
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// If a default limit is specified, but the default request is not, default request to limit
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for key, value := range obj.Default {
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if _, exists := obj.DefaultRequest[key]; !exists {
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obj.DefaultRequest[key] = *(value.Copy())
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}
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}
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// If a default request is not specified, but the min is provided, default request to the min
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for key, value := range obj.Min {
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if _, exists := obj.DefaultRequest[key]; !exists {
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obj.DefaultRequest[key] = *(value.Copy())
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}
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}
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}
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}
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func SetDefaults_ConfigMap(obj *ConfigMap) {
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if obj.Data == nil {
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obj.Data = make(map[string]string)
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}
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}
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// With host networking default all container ports to host ports.
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func defaultHostNetworkPorts(containers *[]Container) {
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for i := range *containers {
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for j := range (*containers)[i].Ports {
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if (*containers)[i].Ports[j].HostPort == 0 {
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(*containers)[i].Ports[j].HostPort = (*containers)[i].Ports[j].ContainerPort
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}
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}
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}
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}
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func SetDefaults_RBDVolumeSource(obj *RBDVolumeSource) {
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if obj.RBDPool == "" {
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obj.RBDPool = "rbd"
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}
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if obj.RadosUser == "" {
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obj.RadosUser = "admin"
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}
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if obj.Keyring == "" {
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obj.Keyring = "/etc/ceph/keyring"
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}
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}
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