/
save.go
175 lines (159 loc) · 5.31 KB
/
save.go
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package spindeploy
import (
"context"
"encoding/json"
"fmt"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/jsonmergepatch"
"github.com/armory/spinnaker-operator/pkg/generated"
"github.com/go-logr/logr"
kerrors "k8s.io/apimachinery/pkg/api/errors"
apimeta "k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/rest"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)
// TransformManifests adjusts settings to the configuration
func (d *Deployer) deployConfig(ctx context.Context, scheme *runtime.Scheme, gen *generated.SpinnakerGeneratedConfig, logger logr.Logger) error {
// Set SpinnakerService instance as the owner and controller
count := 0
for _, v := range gen.Config {
count += len(v.Resources)
if v.Deployment != nil {
count += 1
}
if v.Service != nil {
count += 1
}
}
// Give users a few pointers if we end up running into an error halfway
// In theory, we're idempotent and if we need to run again, it should be reflected in
// the status. But things happen.
d.log.Info(fmt.Sprintf("saving %d manifests across %d services", count, len(gen.Config)))
for k := range gen.Config {
s := gen.Config[k]
if s.Deployment != nil {
logger.Info(fmt.Sprintf("saving deployment manifest for %s", k))
if err := d.saveObject(ctx, s.Deployment, logger); err != nil {
return err
}
}
if s.Service != nil {
logger.Info(fmt.Sprintf("saving service manifest for %s", k))
if err := d.saveObject(ctx, s.Service, logger); err != nil {
return err
}
}
for i := range s.Resources {
o, ok := s.Resources[i].(metav1.Object)
if ok {
logger.Info(fmt.Sprintf("saving resource manifest %s for %s", o.GetName(), k))
// Set SpinnakerService instance as the owner and controller
if s.Deployment != nil {
if err := controllerutil.SetControllerReference(s.Deployment, o, scheme); err != nil {
return err
}
}
}
if err := d.saveObject(ctx, s.Resources[i], logger); err != nil {
return err
}
}
for _, o := range s.ToDelete {
logger.Info(fmt.Sprintf("deleting resource manifest for %s", k))
if err := d.deleteObject(ctx, o); err != nil {
return err
}
}
}
return nil
}
func (d *Deployer) saveObject(ctx context.Context, obj runtime.Object, logger logr.Logger) error {
// Check if it exists
if err := d.patch(ctx, obj); err != nil {
logger.Error(err, fmt.Sprintf("Unable to save object: %v", obj))
return err
}
return nil
}
func (d *Deployer) deleteObject(ctx context.Context, obj runtime.Object) error {
return d.client.Delete(ctx, obj)
}
func (d *Deployer) patch(ctx context.Context, modifiedRaw runtime.Object) error {
modified, ok := modifiedRaw.(metav1.Object)
if !ok {
return fmt.Errorf("unable to save object %s because is not a metav1.Object", modifiedRaw.GetObjectKind().GroupVersionKind().String())
}
gvk := modifiedRaw.GetObjectKind().GroupVersionKind()
modifiedJson, err := json.Marshal(modifiedRaw)
if err != nil {
return err
}
var i rest.Interface
switch gvk.GroupVersion().String() {
case "core/v1", "v1":
i = d.rawClient.CoreV1().RESTClient()
case "apps/v1beta2":
i = d.rawClient.AppsV1beta2().RESTClient()
case "apps/v1":
i = d.rawClient.AppsV1().RESTClient()
case "apps/v1beta1":
i = d.rawClient.AppsV1beta1().RESTClient()
case "networking.k8s.io/v1":
i = d.rawClient.NetworkingV1().RESTClient()
case "storage.k8s.io/v1":
i = d.rawClient.StorageV1().RESTClient()
case "authorization.k8s.io/v":
i = d.rawClient.AuthorizationV1().RESTClient()
case "authentication.k8s.io/v1":
i = d.rawClient.AuthenticationV1().RESTClient()
default:
return fmt.Errorf("Unable to find a REST interface for %s", gvk.String())
}
rsc, _ := apimeta.UnsafeGuessKindToResource(gvk)
originalRaw := modifiedRaw.DeepCopyObject()
// avoid reading from cache
err = d.client.Get(ctx, types.NamespacedName{Namespace: modified.GetNamespace(), Name: modified.GetName()}, originalRaw)
if err != nil {
if kerrors.IsNotFound(err) {
return d.client.Create(ctx, modifiedRaw)
}
return err
}
originalJson, err := json.Marshal(originalRaw)
if err != nil {
return err
}
deleteJson, err := d.createDeleteJson(modifiedRaw, originalRaw)
if err != nil {
return err
}
patch, err := jsonmergepatch.CreateThreeWayJSONMergePatch(deleteJson, modifiedJson, originalJson)
if err != nil {
return err
}
return i.Patch(types.MergePatchType).
Namespace(modified.GetNamespace()).
Resource(rsc.Resource).
Name(modified.GetName()).
Body(patch).
Do().
Into(modifiedRaw)
}
// createDeleteJson creates a json with potential fields to be removed from the original object
func (d *Deployer) createDeleteJson(modifiedRaw runtime.Object, originalRaw runtime.Object) ([]byte, error) {
original, ok := originalRaw.(metav1.Object)
if !ok {
return nil, fmt.Errorf("unable to cast %s to metav1.Object", originalRaw.GetObjectKind().GroupVersionKind().String())
}
deleteObjectRaw := modifiedRaw.DeepCopyObject()
deleteObject, ok := deleteObjectRaw.(metav1.Object)
if !ok {
return nil, fmt.Errorf("unable to cast %s to metav1.Object", deleteObjectRaw.GetObjectKind().GroupVersionKind().String())
}
// "removable" fields
deleteObject.SetAnnotations(original.GetAnnotations())
deleteObject.SetLabels(original.GetLabels())
return json.Marshal(deleteObject)
}