/
mongodb.go
156 lines (138 loc) · 5.13 KB
/
mongodb.go
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/*
Copyright AppsCode Inc. and Contributors
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 "kubedb.dev/apimachinery/apis/kubedb/v1alpha2"
cs "kubedb.dev/apimachinery/client/clientset/versioned/typed/kubedb/v1alpha2"
jsonpatch "github.com/evanphx/json-patch"
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"
"k8s.io/klog/v2"
kutil "kmodules.xyz/client-go"
)
func CreateOrPatchMongoDB(ctx context.Context, c cs.KubedbV1alpha2Interface, meta metav1.ObjectMeta, transform func(*api.MongoDB) *api.MongoDB, opts metav1.PatchOptions) (*api.MongoDB, kutil.VerbType, error) {
cur, err := c.MongoDBs(meta.Namespace).Get(ctx, meta.Name, metav1.GetOptions{})
if kerr.IsNotFound(err) {
klog.V(3).Infof("Creating MongoDB %s/%s.", meta.Namespace, meta.Name)
out, err := c.MongoDBs(meta.Namespace).Create(ctx, transform(&api.MongoDB{
TypeMeta: metav1.TypeMeta{
Kind: "MongoDB",
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 PatchMongoDB(ctx, c, cur, transform, opts)
}
func PatchMongoDB(ctx context.Context, c cs.KubedbV1alpha2Interface, cur *api.MongoDB, transform func(*api.MongoDB) *api.MongoDB, opts metav1.PatchOptions) (*api.MongoDB, kutil.VerbType, error) {
return PatchMongoDBObject(ctx, c, cur, transform(cur.DeepCopy()), opts)
}
func PatchMongoDBObject(ctx context.Context, c cs.KubedbV1alpha2Interface, cur, mod *api.MongoDB, opts metav1.PatchOptions) (*api.MongoDB, 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
}
klog.V(3).Infof("Patching MongoDB %s/%s with %s.", cur.Namespace, cur.Name, string(patch))
out, err := c.MongoDBs(cur.Namespace).Patch(ctx, cur.Name, types.MergePatchType, patch, opts)
return out, kutil.VerbPatched, err
}
func TryUpdateMongoDB(ctx context.Context, c cs.KubedbV1alpha2Interface, meta metav1.ObjectMeta, transform func(*api.MongoDB) *api.MongoDB, opts metav1.UpdateOptions) (result *api.MongoDB, err error) {
attempt := 0
err = wait.PollImmediate(kutil.RetryInterval, kutil.RetryTimeout, func() (bool, error) {
attempt++
cur, e2 := c.MongoDBs(meta.Namespace).Get(ctx, meta.Name, metav1.GetOptions{})
if kerr.IsNotFound(e2) {
return false, e2
} else if e2 == nil {
result, e2 = c.MongoDBs(cur.Namespace).Update(ctx, transform(cur.DeepCopy()), opts)
return e2 == nil, nil
}
klog.Errorf("Attempt %d failed to update MongoDB %s/%s due to %v.", attempt, cur.Namespace, cur.Name, e2)
return false, nil
})
if err != nil {
err = fmt.Errorf("failed to update MongoDB %s/%s after %d attempts due to %v", meta.Namespace, meta.Name, attempt, err)
}
return
}
func UpdateMongoDBStatus(
ctx context.Context,
c cs.KubedbV1alpha2Interface,
meta metav1.ObjectMeta,
transform func(*api.MongoDBStatus) (types.UID, *api.MongoDBStatus),
opts metav1.UpdateOptions,
) (result *api.MongoDB, err error) {
apply := func(x *api.MongoDB) *api.MongoDB {
uid, updatedStatus := transform(x.Status.DeepCopy())
// Ignore status update when uid does not match
if uid != "" && uid != x.UID {
return x
}
return &api.MongoDB{
TypeMeta: x.TypeMeta,
ObjectMeta: x.ObjectMeta,
Spec: x.Spec,
Status: *updatedStatus,
}
}
attempt := 0
cur, err := c.MongoDBs(meta.Namespace).Get(ctx, meta.Name, metav1.GetOptions{})
if err != nil {
return nil, err
}
err = wait.PollImmediate(kutil.RetryInterval, kutil.RetryTimeout, func() (bool, error) {
attempt++
var e2 error
result, e2 = c.MongoDBs(meta.Namespace).UpdateStatus(ctx, apply(cur), opts)
if kerr.IsConflict(e2) {
latest, e3 := c.MongoDBs(meta.Namespace).Get(ctx, meta.Name, metav1.GetOptions{})
switch {
case e3 == nil:
cur = latest
return false, nil
case kutil.IsRequestRetryable(e3):
return false, nil
default:
return false, e3
}
} else if err != nil && !kutil.IsRequestRetryable(e2) {
return false, e2
}
return e2 == nil, nil
})
if err != nil {
err = fmt.Errorf("failed to update status of MongoDB %s/%s after %d attempts due to %v", meta.Namespace, meta.Name, attempt, err)
}
return
}