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.
141 lines
3.3 KiB
Go
141 lines
3.3 KiB
Go
/*
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Copyright 2018 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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"encoding/json"
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"errors"
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"fmt"
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"strconv"
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"strings"
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"sigs.k8s.io/structured-merge-diff/v4/fieldpath"
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"sigs.k8s.io/structured-merge-diff/v4/value"
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)
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const (
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// Field indicates that the content of this path element is a field's name
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Field = "f"
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// Value indicates that the content of this path element is a field's value
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Value = "v"
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// Index indicates that the content of this path element is an index in an array
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Index = "i"
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// Key indicates that the content of this path element is a key value map
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Key = "k"
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// Separator separates the type of a path element from the contents
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Separator = ":"
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)
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// NewPathElement parses a serialized path element
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func NewPathElement(s string) (fieldpath.PathElement, error) {
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split := strings.SplitN(s, Separator, 2)
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if len(split) < 2 {
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return fieldpath.PathElement{}, fmt.Errorf("missing colon: %v", s)
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}
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switch split[0] {
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case Field:
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return fieldpath.PathElement{
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FieldName: &split[1],
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}, nil
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case Value:
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val, err := value.FromJSON([]byte(split[1]))
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if err != nil {
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return fieldpath.PathElement{}, err
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}
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return fieldpath.PathElement{
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Value: &val,
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}, nil
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case Index:
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i, err := strconv.Atoi(split[1])
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if err != nil {
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return fieldpath.PathElement{}, err
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}
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return fieldpath.PathElement{
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Index: &i,
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}, nil
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case Key:
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kv := map[string]json.RawMessage{}
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err := json.Unmarshal([]byte(split[1]), &kv)
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if err != nil {
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return fieldpath.PathElement{}, err
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}
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fields := value.FieldList{}
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for k, v := range kv {
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b, err := json.Marshal(v)
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if err != nil {
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return fieldpath.PathElement{}, err
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}
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val, err := value.FromJSON(b)
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if err != nil {
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return fieldpath.PathElement{}, err
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}
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fields = append(fields, value.Field{
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Name: k,
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Value: val,
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})
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}
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return fieldpath.PathElement{
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Key: &fields,
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}, nil
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default:
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// Ignore unknown key types
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return fieldpath.PathElement{}, nil
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}
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}
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// PathElementString serializes a path element
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func PathElementString(pe fieldpath.PathElement) (string, error) {
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switch {
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case pe.FieldName != nil:
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return Field + Separator + *pe.FieldName, nil
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case pe.Key != nil:
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kv := map[string]json.RawMessage{}
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for _, k := range *pe.Key {
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b, err := value.ToJSON(k.Value)
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if err != nil {
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return "", err
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}
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m := json.RawMessage{}
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err = json.Unmarshal(b, &m)
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if err != nil {
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return "", err
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}
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kv[k.Name] = m
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}
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b, err := json.Marshal(kv)
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if err != nil {
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return "", err
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}
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return Key + ":" + string(b), nil
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case pe.Value != nil:
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b, err := value.ToJSON(*pe.Value)
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if err != nil {
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return "", err
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}
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return Value + ":" + string(b), nil
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case pe.Index != nil:
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return Index + ":" + strconv.Itoa(*pe.Index), nil
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default:
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return "", errors.New("Invalid type of path element")
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}
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}
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