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strategy.go
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strategy.go
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package deployconfig
import (
"fmt"
"reflect"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/validation/field"
apirequest "k8s.io/apiserver/pkg/endpoints/request"
kstorage "k8s.io/apiserver/pkg/storage"
"k8s.io/apiserver/pkg/storage/names"
kapi "k8s.io/kubernetes/pkg/api"
"github.com/openshift/origin/pkg/deploy/api"
"github.com/openshift/origin/pkg/deploy/api/validation"
)
// strategy implements behavior for DeploymentConfig objects
type strategy struct {
runtime.ObjectTyper
names.NameGenerator
}
// Strategy is the default logic that applies when creating and updating DeploymentConfig objects.
var Strategy = strategy{kapi.Scheme, names.SimpleNameGenerator}
// NamespaceScoped is true for DeploymentConfig objects.
func (strategy) NamespaceScoped() bool {
return true
}
// AllowCreateOnUpdate is false for DeploymentConfig objects.
func (strategy) AllowCreateOnUpdate() bool {
return false
}
func (strategy) AllowUnconditionalUpdate() bool {
return false
}
func (s strategy) Export(ctx apirequest.Context, obj runtime.Object, exact bool) error {
s.PrepareForCreate(ctx, obj)
return nil
}
// PrepareForCreate clears fields that are not allowed to be set by end users on creation.
func (strategy) PrepareForCreate(ctx apirequest.Context, obj runtime.Object) {
dc := obj.(*api.DeploymentConfig)
dc.Generation = 1
dc.Status = api.DeploymentConfigStatus{}
for i := range dc.Spec.Triggers {
if params := dc.Spec.Triggers[i].ImageChangeParams; params != nil {
params.LastTriggeredImage = ""
}
}
}
// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
func (strategy) PrepareForUpdate(ctx apirequest.Context, obj, old runtime.Object) {
newDc := obj.(*api.DeploymentConfig)
oldDc := old.(*api.DeploymentConfig)
newVersion := newDc.Status.LatestVersion
oldVersion := oldDc.Status.LatestVersion
// Persist status
newDc.Status = oldDc.Status
// oc deploy --latest from old clients
// TODO: Remove once we drop support for older clients
if newVersion == oldVersion+1 {
newDc.Status.LatestVersion = newVersion
}
// TODO: Disallow lastTriggeredImage updates from this update path.
// Any changes to the spec or labels, increment the generation number, any changes
// to the status should reflect the generation number of the corresponding object
// (should be handled by the controller).
if !reflect.DeepEqual(oldDc.Spec, newDc.Spec) || newDc.Status.LatestVersion != oldDc.Status.LatestVersion {
newDc.Generation = oldDc.Generation + 1
}
}
// Canonicalize normalizes the object after validation.
func (strategy) Canonicalize(obj runtime.Object) {
}
// Validate validates a new policy.
func (strategy) Validate(ctx apirequest.Context, obj runtime.Object) field.ErrorList {
return validation.ValidateDeploymentConfig(obj.(*api.DeploymentConfig))
}
// ValidateUpdate is the default update validation for an end user.
func (strategy) ValidateUpdate(ctx apirequest.Context, obj, old runtime.Object) field.ErrorList {
return validation.ValidateDeploymentConfigUpdate(obj.(*api.DeploymentConfig), old.(*api.DeploymentConfig))
}
// CheckGracefulDelete allows a deployment config to be gracefully deleted.
func (strategy) CheckGracefulDelete(obj runtime.Object, options *metav1.DeleteOptions) bool {
return false
}
// statusStrategy implements behavior for DeploymentConfig status updates.
type statusStrategy struct {
strategy
}
var StatusStrategy = statusStrategy{Strategy}
// PrepareForUpdate clears fields that are not allowed to be set by end users on update of status.
func (statusStrategy) PrepareForUpdate(ctx apirequest.Context, obj, old runtime.Object) {
newDc := obj.(*api.DeploymentConfig)
oldDc := old.(*api.DeploymentConfig)
newDc.Spec = oldDc.Spec
newDc.Labels = oldDc.Labels
}
// ValidateUpdate is the default update validation for an end user updating status.
func (statusStrategy) ValidateUpdate(ctx apirequest.Context, obj, old runtime.Object) field.ErrorList {
return validation.ValidateDeploymentConfigStatusUpdate(obj.(*api.DeploymentConfig), old.(*api.DeploymentConfig))
}
// GetAttrs returns labels and fields of a given object for filtering purposes
func GetAttrs(obj runtime.Object) (labels.Set, fields.Set, error) {
deploymentConfig, ok := obj.(*api.DeploymentConfig)
if !ok {
return nil, nil, fmt.Errorf("not a DeploymentConfig")
}
return labels.Set(deploymentConfig.ObjectMeta.Labels), api.DeploymentConfigToSelectableFields(deploymentConfig), nil
}
// Matcher returns a generic matcher for a given label and field selector.
func Matcher(label labels.Selector, field fields.Selector) kstorage.SelectionPredicate {
return kstorage.SelectionPredicate{
Label: label,
Field: field,
GetAttrs: GetAttrs,
}
}