mirror of
https://github.com/hanzoai/volume.git
synced 2026-10-30 14:55:30 +00:00
zeekay
b61441f7d7
A fork of Rancher's local-path-provisioner at v0.0.36. The behaviour is unchanged and deliberately so — a directory on the node a pod lands on is the right thing for a disk. What changes is identity. The provisioner answers to hanzo.ai/volume rather than rancher.io/local-path. That is not branding: two provisioners sharing one name race for the same claims, and a stock k3s carries the upstream one, so a cluster running both would settle our storage by chance. Data lives at /var/lib/hanzo/volume, so reading a Hanzo cluster does not mean learning another vendor's directory. Apache-2.0 as published, unaltered, with Rancher's attribution in NOTICE. The README says what this is not: durability. A volume here dies with its node. That is hanzoai/replicate's question, one layer up, and keeping the two apart is what lets the disk stay this simple.
103 lines
3.2 KiB
Go
103 lines
3.2 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package internal
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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)
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type lastAppliedUpdater struct {
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fieldManager Manager
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}
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var _ Manager = &lastAppliedUpdater{}
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// NewLastAppliedUpdater sets the client-side apply annotation up to date with
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// server-side apply managed fields
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func NewLastAppliedUpdater(fieldManager Manager) Manager {
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return &lastAppliedUpdater{
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fieldManager: fieldManager,
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}
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}
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// Update implements Manager.
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func (f *lastAppliedUpdater) Update(liveObj, newObj runtime.Object, managed Managed, manager string) (runtime.Object, Managed, error) {
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return f.fieldManager.Update(liveObj, newObj, managed, manager)
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}
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// server-side apply managed fields
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func (f *lastAppliedUpdater) Apply(liveObj, newObj runtime.Object, managed Managed, manager string, force bool) (runtime.Object, Managed, error) {
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liveObj, managed, err := f.fieldManager.Apply(liveObj, newObj, managed, manager, force)
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if err != nil {
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return liveObj, managed, err
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}
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// Sync the client-side apply annotation only from kubectl server-side apply.
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// To opt-out of this behavior, users may specify a different field manager.
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//
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// If the client-side apply annotation doesn't exist,
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// then continue because we have no annotation to update
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if manager == "kubectl" && hasLastApplied(liveObj) {
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lastAppliedValue, err := buildLastApplied(newObj)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to build last-applied annotation: %v", err)
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}
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err = SetLastApplied(liveObj, lastAppliedValue)
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if err != nil {
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return nil, nil, fmt.Errorf("failed to set last-applied annotation: %v", err)
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}
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}
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return liveObj, managed, err
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}
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func hasLastApplied(obj runtime.Object) bool {
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var accessor, err = meta.Accessor(obj)
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if err != nil {
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panic(fmt.Sprintf("couldn't get accessor: %v", err))
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}
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var annotations = accessor.GetAnnotations()
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if annotations == nil {
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return false
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}
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lastApplied, ok := annotations[LastAppliedConfigAnnotation]
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return ok && len(lastApplied) > 0
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}
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func buildLastApplied(obj runtime.Object) (string, error) {
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obj = obj.DeepCopyObject()
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var accessor, err = meta.Accessor(obj)
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if err != nil {
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panic(fmt.Sprintf("couldn't get accessor: %v", err))
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}
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// Remove the annotation from the object before encoding the object
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var annotations = accessor.GetAnnotations()
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delete(annotations, LastAppliedConfigAnnotation)
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accessor.SetAnnotations(annotations)
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lastApplied, err := runtime.Encode(unstructured.UnstructuredJSONScheme, obj)
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if err != nil {
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return "", fmt.Errorf("couldn't encode object into last applied annotation: %v", err)
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}
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return string(lastApplied), nil
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}
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