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conversion.go
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conversion.go
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/*
Copyright 2014 Google Inc. All rights reserved.
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 v1beta1
import (
"fmt"
"strconv"
newer "github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api/resource"
"github.com/GoogleCloudPlatform/kubernetes/pkg/conversion"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
)
func init() {
// Our TypeMeta was split into two different structs.
newer.Scheme.AddStructFieldConversion(TypeMeta{}, "TypeMeta", newer.TypeMeta{}, "TypeMeta")
newer.Scheme.AddStructFieldConversion(TypeMeta{}, "TypeMeta", newer.ObjectMeta{}, "ObjectMeta")
newer.Scheme.AddStructFieldConversion(TypeMeta{}, "TypeMeta", newer.ListMeta{}, "ListMeta")
newer.Scheme.AddStructFieldConversion(newer.TypeMeta{}, "TypeMeta", TypeMeta{}, "TypeMeta")
newer.Scheme.AddStructFieldConversion(newer.ObjectMeta{}, "ObjectMeta", TypeMeta{}, "TypeMeta")
newer.Scheme.AddStructFieldConversion(newer.ListMeta{}, "ListMeta", TypeMeta{}, "TypeMeta")
// TODO: scope this to a specific type once that becomes available and remove the Event conversion functions below
// newer.Scheme.AddStructFieldConversion(string(""), "Status", string(""), "Condition")
// newer.Scheme.AddStructFieldConversion(string(""), "Condition", string(""), "Status")
err := newer.Scheme.AddConversionFuncs(
// TypeMeta must be split into two objects
func(in *newer.TypeMeta, out *TypeMeta, s conversion.Scope) error {
out.Kind = in.Kind
out.APIVersion = in.APIVersion
return nil
},
func(in *TypeMeta, out *newer.TypeMeta, s conversion.Scope) error {
out.Kind = in.Kind
out.APIVersion = in.APIVersion
return nil
},
// ListMeta must be converted to TypeMeta
func(in *newer.ListMeta, out *TypeMeta, s conversion.Scope) error {
out.SelfLink = in.SelfLink
if len(in.ResourceVersion) > 0 {
v, err := strconv.ParseUint(in.ResourceVersion, 10, 64)
if err != nil {
return err
}
out.ResourceVersion = v
}
return nil
},
func(in *TypeMeta, out *newer.ListMeta, s conversion.Scope) error {
out.SelfLink = in.SelfLink
if in.ResourceVersion != 0 {
out.ResourceVersion = strconv.FormatUint(in.ResourceVersion, 10)
} else {
out.ResourceVersion = ""
}
return nil
},
// ObjectMeta must be converted to TypeMeta
func(in *newer.ObjectMeta, out *TypeMeta, s conversion.Scope) error {
out.Namespace = in.Namespace
out.ID = in.Name
out.UID = in.UID
out.CreationTimestamp = in.CreationTimestamp
out.SelfLink = in.SelfLink
if len(in.ResourceVersion) > 0 {
v, err := strconv.ParseUint(in.ResourceVersion, 10, 64)
if err != nil {
return err
}
out.ResourceVersion = v
}
return s.Convert(&in.Annotations, &out.Annotations, 0)
},
func(in *TypeMeta, out *newer.ObjectMeta, s conversion.Scope) error {
out.Namespace = in.Namespace
out.Name = in.ID
out.UID = in.UID
out.CreationTimestamp = in.CreationTimestamp
out.SelfLink = in.SelfLink
if in.ResourceVersion != 0 {
out.ResourceVersion = strconv.FormatUint(in.ResourceVersion, 10)
} else {
out.ResourceVersion = ""
}
return s.Convert(&in.Annotations, &out.Annotations, 0)
},
// EnvVar's Key is deprecated in favor of Name.
func(in *newer.EnvVar, out *EnvVar, s conversion.Scope) error {
out.Value = in.Value
out.Key = in.Name
out.Name = in.Name
return nil
},
func(in *EnvVar, out *newer.EnvVar, s conversion.Scope) error {
out.Value = in.Value
if in.Name != "" {
out.Name = in.Name
} else {
out.Name = in.Key
}
return nil
},
// Path & MountType are deprecated.
func(in *newer.VolumeMount, out *VolumeMount, s conversion.Scope) error {
out.Name = in.Name
out.ReadOnly = in.ReadOnly
out.MountPath = in.MountPath
out.Path = in.MountPath
out.MountType = "" // MountType is ignored.
return nil
},
func(in *VolumeMount, out *newer.VolumeMount, s conversion.Scope) error {
out.Name = in.Name
out.ReadOnly = in.ReadOnly
if in.MountPath == "" {
out.MountPath = in.Path
} else {
out.MountPath = in.MountPath
}
return nil
},
// MinionList.Items had a wrong name in v1beta1
func(in *newer.NodeList, out *MinionList, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.ListMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.Items, &out.Items, 0); err != nil {
return err
}
out.Minions = out.Items
return nil
},
func(in *MinionList, out *newer.NodeList, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.TypeMeta, &out.ListMeta, 0); err != nil {
return err
}
if len(in.Items) == 0 {
if err := s.Convert(&in.Minions, &out.Items, 0); err != nil {
return err
}
} else {
if err := s.Convert(&in.Items, &out.Items, 0); err != nil {
return err
}
}
return nil
},
func(in *newer.PodStatus, out *PodState, s conversion.Scope) error {
if err := s.Convert(&in.Phase, &out.Status, 0); err != nil {
return err
}
if err := s.Convert(&in.Info, &out.Info, 0); err != nil {
return err
}
out.Message = in.Message
out.Host = in.Host
out.HostIP = in.HostIP
out.PodIP = in.PodIP
return nil
},
func(in *PodState, out *newer.PodStatus, s conversion.Scope) error {
if err := s.Convert(&in.Status, &out.Phase, 0); err != nil {
return err
}
if err := s.Convert(&in.Info, &out.Info, 0); err != nil {
return err
}
out.Message = in.Message
out.Host = in.Host
out.HostIP = in.HostIP
out.PodIP = in.PodIP
return nil
},
func(in *newer.PodSpec, out *PodState, s conversion.Scope) error {
if err := s.Convert(&in, &out.Manifest, 0); err != nil {
return err
}
out.Host = in.Host
return nil
},
func(in *PodState, out *newer.PodSpec, s conversion.Scope) error {
if err := s.Convert(&in.Manifest, &out, 0); err != nil {
return err
}
out.Host = in.Host
return nil
},
// Convert all to the new PodPhase constants
func(in *newer.PodPhase, out *PodStatus, s conversion.Scope) error {
switch *in {
case "":
*out = ""
case newer.PodPending:
*out = PodWaiting
case newer.PodRunning:
*out = PodRunning
case newer.PodSucceeded:
*out = PodSucceeded
case newer.PodFailed:
*out = PodTerminated
case newer.PodUnknown:
*out = PodUnknown
default:
return &newer.ConversionError{
In: in,
Out: out,
Message: "The string provided is not a valid PodPhase constant value",
}
}
return nil
},
func(in *PodStatus, out *newer.PodPhase, s conversion.Scope) error {
switch *in {
case "":
*out = ""
case PodWaiting:
*out = newer.PodPending
case PodRunning:
*out = newer.PodRunning
case PodTerminated:
// Older API versions did not contain enough info to map to PodSucceeded
*out = newer.PodFailed
case PodSucceeded:
*out = newer.PodSucceeded
case PodUnknown:
*out = newer.PodUnknown
default:
return &newer.ConversionError{
In: in,
Out: out,
Message: "The string provided is not a valid PodPhase constant value",
}
}
return nil
},
// Convert all the standard objects
func(in *newer.Pod, out *Pod, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.ObjectMeta, &out.TypeMeta, 0); err != nil {
return err
}
// TODO: Change this to use in.ObjectMeta.Labels.
if err := s.Convert(&in.Labels, &out.Labels, 0); err != nil {
return err
}
if err := s.Convert(&in.Spec, &out.DesiredState.Manifest, 0); err != nil {
return err
}
out.DesiredState.Host = in.Spec.Host
if err := s.Convert(&in.Status, &out.CurrentState, 0); err != nil {
return err
}
if err := s.Convert(&in.Spec.NodeSelector, &out.NodeSelector, 0); err != nil {
return err
}
return nil
},
func(in *Pod, out *newer.Pod, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.TypeMeta, &out.ObjectMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.Labels, &out.Labels, 0); err != nil {
return err
}
if err := s.Convert(&in.DesiredState.Manifest, &out.Spec, 0); err != nil {
return err
}
out.Spec.Host = in.DesiredState.Host
if err := s.Convert(&in.CurrentState, &out.Status, 0); err != nil {
return err
}
if err := s.Convert(&in.NodeSelector, &out.Spec.NodeSelector, 0); err != nil {
return err
}
return nil
},
func(in *newer.PodStatusResult, out *PodStatusResult, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.ObjectMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.Status, &out.State, 0); err != nil {
return err
}
return nil
},
func(in *PodStatusResult, out *newer.PodStatusResult, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.TypeMeta, &out.ObjectMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.State, &out.Status, 0); err != nil {
return err
}
return nil
},
func(in *newer.ReplicationController, out *ReplicationController, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.ObjectMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.Labels, &out.Labels, 0); err != nil {
return err
}
if err := s.Convert(&in.Spec, &out.DesiredState, 0); err != nil {
return err
}
out.CurrentState.Replicas = in.Status.Replicas
return nil
},
func(in *ReplicationController, out *newer.ReplicationController, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.TypeMeta, &out.ObjectMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.Labels, &out.Labels, 0); err != nil {
return err
}
if err := s.Convert(&in.DesiredState, &out.Spec, 0); err != nil {
return err
}
out.Status.Replicas = in.CurrentState.Replicas
return nil
},
func(in *newer.ReplicationControllerSpec, out *ReplicationControllerState, s conversion.Scope) error {
out.Replicas = in.Replicas
if err := s.Convert(&in.Selector, &out.ReplicaSelector, 0); err != nil {
return err
}
if in.TemplateRef != nil && in.Template == nil {
return &newer.ConversionError{
In: in,
Out: out,
Message: "objects with a template ref cannot be converted to older objects, must populate template",
}
}
if in.Template != nil {
if err := s.Convert(in.Template, &out.PodTemplate, 0); err != nil {
return err
}
}
return nil
},
func(in *ReplicationControllerState, out *newer.ReplicationControllerSpec, s conversion.Scope) error {
out.Replicas = in.Replicas
if err := s.Convert(&in.ReplicaSelector, &out.Selector, 0); err != nil {
return err
}
out.Template = &newer.PodTemplateSpec{}
if err := s.Convert(&in.PodTemplate, out.Template, 0); err != nil {
return err
}
return nil
},
func(in *newer.PodTemplateSpec, out *PodTemplate, s conversion.Scope) error {
if err := s.Convert(&in.Spec, &out.DesiredState.Manifest, 0); err != nil {
return err
}
out.DesiredState.Host = in.Spec.Host
if err := s.Convert(&in.ObjectMeta.Labels, &out.Labels, 0); err != nil {
return err
}
return nil
},
func(in *PodTemplate, out *newer.PodTemplateSpec, s conversion.Scope) error {
if err := s.Convert(&in.DesiredState.Manifest, &out.Spec, 0); err != nil {
return err
}
out.Spec.Host = in.DesiredState.Host
if err := s.Convert(&in.Labels, &out.ObjectMeta.Labels, 0); err != nil {
return err
}
return nil
},
func(in *newer.PodSpec, out *BoundPod, s conversion.Scope) error {
if err := s.Convert(&in, &out.Spec, 0); err != nil {
return err
}
return nil
},
func(in *BoundPod, out *newer.PodSpec, s conversion.Scope) error {
if err := s.Convert(&in.Spec, &out, 0); err != nil {
return err
}
return nil
},
func(in *newer.PodSpec, out *ContainerManifest, s conversion.Scope) error {
if err := s.Convert(&in.Volumes, &out.Volumes, 0); err != nil {
return err
}
if err := s.Convert(&in.Containers, &out.Containers, 0); err != nil {
return err
}
if err := s.Convert(&in.RestartPolicy, &out.RestartPolicy, 0); err != nil {
return err
}
out.DNSPolicy = DNSPolicy(in.DNSPolicy)
out.Version = "v1beta2"
return nil
},
func(in *ContainerManifest, out *newer.PodSpec, s conversion.Scope) error {
if err := s.Convert(&in.Volumes, &out.Volumes, 0); err != nil {
return err
}
if err := s.Convert(&in.Containers, &out.Containers, 0); err != nil {
return err
}
if err := s.Convert(&in.RestartPolicy, &out.RestartPolicy, 0); err != nil {
return err
}
out.DNSPolicy = newer.DNSPolicy(in.DNSPolicy)
return nil
},
func(in *newer.Service, out *Service, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.ObjectMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.Labels, &out.Labels, 0); err != nil {
return err
}
out.Port = in.Spec.Port
out.Protocol = Protocol(in.Spec.Protocol)
if err := s.Convert(&in.Spec.Selector, &out.Selector, 0); err != nil {
return err
}
out.CreateExternalLoadBalancer = in.Spec.CreateExternalLoadBalancer
out.PublicIPs = in.Spec.PublicIPs
out.ContainerPort = in.Spec.ContainerPort
out.PortalIP = in.Spec.PortalIP
out.ProxyPort = in.Spec.ProxyPort
if err := s.Convert(&in.Spec.SessionAffinity, &out.SessionAffinity, 0); err != nil {
return err
}
return nil
},
func(in *Service, out *newer.Service, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.TypeMeta, &out.ObjectMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.Labels, &out.Labels, 0); err != nil {
return err
}
out.Spec.Port = in.Port
out.Spec.Protocol = newer.Protocol(in.Protocol)
if err := s.Convert(&in.Selector, &out.Spec.Selector, 0); err != nil {
return err
}
out.Spec.CreateExternalLoadBalancer = in.CreateExternalLoadBalancer
out.Spec.PublicIPs = in.PublicIPs
out.Spec.ContainerPort = in.ContainerPort
out.Spec.PortalIP = in.PortalIP
out.Spec.ProxyPort = in.ProxyPort
if err := s.Convert(&in.SessionAffinity, &out.Spec.SessionAffinity, 0); err != nil {
return err
}
return nil
},
func(in *newer.Node, out *Minion, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.ObjectMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.ObjectMeta.Labels, &out.Labels, 0); err != nil {
return err
}
if err := s.Convert(&in.Status.Phase, &out.Status.Phase, 0); err != nil {
return err
}
if err := s.Convert(&in.Status.Conditions, &out.Status.Conditions, 0); err != nil {
return err
}
out.HostIP = in.Status.HostIP
return s.Convert(&in.Spec.Capacity, &out.NodeResources.Capacity, 0)
},
func(in *Minion, out *newer.Node, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.TypeMeta, &out.ObjectMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.Labels, &out.ObjectMeta.Labels, 0); err != nil {
return err
}
if err := s.Convert(&in.Status.Phase, &out.Status.Phase, 0); err != nil {
return err
}
if err := s.Convert(&in.Status.Conditions, &out.Status.Conditions, 0); err != nil {
return err
}
out.Status.HostIP = in.HostIP
return s.Convert(&in.NodeResources.Capacity, &out.Spec.Capacity, 0)
},
// Object ID <-> Name
// TODO: amend the conversion package to allow overriding specific fields.
func(in *ObjectReference, out *newer.ObjectReference, s conversion.Scope) error {
out.Kind = in.Kind
out.Namespace = in.Namespace
out.Name = in.ID
out.UID = in.UID
out.APIVersion = in.APIVersion
out.ResourceVersion = in.ResourceVersion
out.FieldPath = in.FieldPath
return nil
},
func(in *newer.ObjectReference, out *ObjectReference, s conversion.Scope) error {
out.Kind = in.Kind
out.Namespace = in.Namespace
out.ID = in.Name
out.UID = in.UID
out.APIVersion = in.APIVersion
out.ResourceVersion = in.ResourceVersion
out.FieldPath = in.FieldPath
return nil
},
// Event Source <-> Source.Component
// Event Host <-> Source.Host
// TODO: remove this when it becomes possible to specify a field name conversion on a specific type
func(in *newer.Event, out *Event, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.ObjectMeta, &out.TypeMeta, 0); err != nil {
return err
}
out.Reason = in.Reason
out.Message = in.Message
out.Source = in.Source.Component
out.Host = in.Source.Host
out.Timestamp = in.Timestamp
return s.Convert(&in.InvolvedObject, &out.InvolvedObject, 0)
},
func(in *Event, out *newer.Event, s conversion.Scope) error {
if err := s.Convert(&in.TypeMeta, &out.TypeMeta, 0); err != nil {
return err
}
if err := s.Convert(&in.TypeMeta, &out.ObjectMeta, 0); err != nil {
return err
}
out.Reason = in.Reason
out.Message = in.Message
out.Source.Component = in.Source
out.Source.Host = in.Host
out.Timestamp = in.Timestamp
return s.Convert(&in.InvolvedObject, &out.InvolvedObject, 0)
},
// This is triggered for the Memory field of Container.
func(in *int64, out *resource.Quantity, s conversion.Scope) error {
out.Set(*in)
out.Format = resource.BinarySI
return nil
},
func(in *resource.Quantity, out *int64, s conversion.Scope) error {
*out = in.Value()
return nil
},
// This is triggered by the CPU field of Container.
// Note that if we add other int/Quantity conversions my
// simple hack (int64=Value(), int=MilliValue()) here won't work.
func(in *int, out *resource.Quantity, s conversion.Scope) error {
out.SetMilli(int64(*in))
out.Format = resource.DecimalSI
return nil
},
func(in *resource.Quantity, out *int, s conversion.Scope) error {
*out = int(in.MilliValue())
return nil
},
// Convert resource lists.
func(in *ResourceList, out *newer.ResourceList, s conversion.Scope) error {
*out = newer.ResourceList{}
for k, v := range *in {
fv, err := strconv.ParseFloat(v.String(), 64)
if err != nil {
return &newer.ConversionError{
In: in, Out: out,
Message: fmt.Sprintf("value '%v' of '%v': %v", v, k, err),
}
}
if k == ResourceCPU {
(*out)[newer.ResourceCPU] = *resource.NewMilliQuantity(int64(fv*1000), resource.DecimalSI)
} else {
(*out)[newer.ResourceName(k)] = *resource.NewQuantity(int64(fv), resource.BinarySI)
}
}
return nil
},
func(in *newer.ResourceList, out *ResourceList, s conversion.Scope) error {
*out = ResourceList{}
for k, v := range *in {
if k == newer.ResourceCPU {
(*out)[ResourceCPU] = util.NewIntOrStringFromString(fmt.Sprintf("%v", float64(v.MilliValue())/1000))
} else {
(*out)[ResourceName(k)] = util.NewIntOrStringFromInt(int(v.Value()))
}
}
return nil
},
// VolumeSource's HostDir is deprecated in favor of HostPath.
// TODO: It would be great if I could just map field names to
// convert or else maybe say "convert all members of this
// struct" and then fix up only the stuff that changed.
func(in *newer.VolumeSource, out *VolumeSource, s conversion.Scope) error {
if err := s.Convert(&in.EmptyDir, &out.EmptyDir, 0); err != nil {
return err
}
if err := s.Convert(&in.GitRepo, &out.GitRepo, 0); err != nil {
return err
}
if err := s.Convert(&in.GCEPersistentDisk, &out.GCEPersistentDisk, 0); err != nil {
return err
}
if err := s.Convert(&in.HostPath, &out.HostDir, 0); err != nil {
return err
}
return nil
},
func(in *VolumeSource, out *newer.VolumeSource, s conversion.Scope) error {
if err := s.Convert(&in.EmptyDir, &out.EmptyDir, 0); err != nil {
return err
}
if err := s.Convert(&in.GitRepo, &out.GitRepo, 0); err != nil {
return err
}
if err := s.Convert(&in.GCEPersistentDisk, &out.GCEPersistentDisk, 0); err != nil {
return err
}
if err := s.Convert(&in.HostDir, &out.HostPath, 0); err != nil {
return err
}
return nil
},
)
if err != nil {
// If one of the conversion functions is malformed, detect it immediately.
panic(err)
}
}