/
backupblueprint.go
102 lines (88 loc) · 3.86 KB
/
backupblueprint.go
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/*
Copyright The Stash 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 util
import (
"context"
"fmt"
api "stash.appscode.dev/apimachinery/apis/stash/v1beta1"
cs "stash.appscode.dev/apimachinery/client/clientset/versioned/typed/stash/v1beta1"
jsonpatch "github.com/evanphx/json-patch"
"github.com/golang/glog"
kerr "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
kutil "kmodules.xyz/client-go"
)
func CreateOrPatchBackupBlueprint(ctx context.Context, c cs.StashV1beta1Interface, meta metav1.ObjectMeta, transform func(in *api.BackupBlueprint) *api.BackupBlueprint, opts metav1.PatchOptions) (*api.BackupBlueprint, kutil.VerbType, error) {
cur, err := c.BackupBlueprints().Get(ctx, meta.Name, metav1.GetOptions{})
if kerr.IsNotFound(err) {
glog.V(3).Infof("Creating BackupBlueprint %s/%s.", meta.Namespace, meta.Name)
out, err := c.BackupBlueprints().Create(ctx, transform(&api.BackupBlueprint{
TypeMeta: metav1.TypeMeta{
Kind: "BackupBlueprint",
APIVersion: api.SchemeGroupVersion.String(),
},
ObjectMeta: meta,
}), metav1.CreateOptions{
DryRun: opts.DryRun,
FieldManager: opts.FieldManager,
})
return out, kutil.VerbCreated, err
} else if err != nil {
return nil, kutil.VerbUnchanged, err
}
return PatchBackupBlueprint(ctx, c, cur, transform, opts)
}
func PatchBackupBlueprint(ctx context.Context, c cs.StashV1beta1Interface, cur *api.BackupBlueprint, transform func(*api.BackupBlueprint) *api.BackupBlueprint, opts metav1.PatchOptions) (*api.BackupBlueprint, kutil.VerbType, error) {
return PatchBackupBlueprintObject(ctx, c, cur, transform(cur.DeepCopy()), opts)
}
func PatchBackupBlueprintObject(ctx context.Context, c cs.StashV1beta1Interface, cur, mod *api.BackupBlueprint, opts metav1.PatchOptions) (*api.BackupBlueprint, kutil.VerbType, error) {
curJson, err := json.Marshal(cur)
if err != nil {
return nil, kutil.VerbUnchanged, err
}
modJson, err := json.Marshal(mod)
if err != nil {
return nil, kutil.VerbUnchanged, err
}
patch, err := jsonpatch.CreateMergePatch(curJson, modJson)
if err != nil {
return nil, kutil.VerbUnchanged, err
}
if len(patch) == 0 || string(patch) == "{}" {
return cur, kutil.VerbUnchanged, nil
}
glog.V(3).Infof("Patching BackupBlueprint %s/%s with %s.", cur.Namespace, cur.Name, string(patch))
out, err := c.BackupBlueprints().Patch(ctx, cur.Name, types.MergePatchType, patch, opts)
return out, kutil.VerbPatched, err
}
func TryUpdateBackupBlueprint(ctx context.Context, c cs.StashV1beta1Interface, meta metav1.ObjectMeta, transform func(*api.BackupBlueprint) *api.BackupBlueprint, opts metav1.UpdateOptions) (result *api.BackupBlueprint, err error) {
attempt := 0
err = wait.PollImmediate(kutil.RetryInterval, kutil.RetryTimeout, func() (bool, error) {
attempt++
cur, e2 := c.BackupBlueprints().Get(ctx, meta.Name, metav1.GetOptions{})
if kerr.IsNotFound(e2) {
return false, e2
} else if e2 == nil {
result, e2 = c.BackupBlueprints().Update(ctx, transform(cur.DeepCopy()), opts)
return e2 == nil, nil
}
glog.Errorf("Attempt %d failed to update BackupBlueprint %s/%s due to %v.", attempt, cur.Namespace, cur.Name, e2)
return false, nil
})
if err != nil {
err = fmt.Errorf("failed to update BackupBlueprint %s/%s after %d attempts due to %v", meta.Namespace, meta.Name, attempt, err)
}
return
}