mirror of
https://github.com/hanzoai/volume.git
synced 2026-10-01 00:48:00 +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.
130 lines
3.3 KiB
Go
130 lines
3.3 KiB
Go
package jsoniter
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import (
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"github.com/modern-go/reflect2"
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"unsafe"
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)
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func decoderOfOptional(ctx *ctx, typ reflect2.Type) ValDecoder {
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ptrType := typ.(*reflect2.UnsafePtrType)
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elemType := ptrType.Elem()
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decoder := decoderOfType(ctx, elemType)
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return &OptionalDecoder{elemType, decoder}
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}
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func encoderOfOptional(ctx *ctx, typ reflect2.Type) ValEncoder {
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ptrType := typ.(*reflect2.UnsafePtrType)
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elemType := ptrType.Elem()
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elemEncoder := encoderOfType(ctx, elemType)
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encoder := &OptionalEncoder{elemEncoder}
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return encoder
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}
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type OptionalDecoder struct {
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ValueType reflect2.Type
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ValueDecoder ValDecoder
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}
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func (decoder *OptionalDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
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if iter.ReadNil() {
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*((*unsafe.Pointer)(ptr)) = nil
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} else {
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if *((*unsafe.Pointer)(ptr)) == nil {
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//pointer to null, we have to allocate memory to hold the value
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newPtr := decoder.ValueType.UnsafeNew()
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decoder.ValueDecoder.Decode(newPtr, iter)
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*((*unsafe.Pointer)(ptr)) = newPtr
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} else {
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//reuse existing instance
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decoder.ValueDecoder.Decode(*((*unsafe.Pointer)(ptr)), iter)
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}
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}
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}
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type dereferenceDecoder struct {
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// only to deference a pointer
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valueType reflect2.Type
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valueDecoder ValDecoder
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}
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func (decoder *dereferenceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
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if *((*unsafe.Pointer)(ptr)) == nil {
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//pointer to null, we have to allocate memory to hold the value
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newPtr := decoder.valueType.UnsafeNew()
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decoder.valueDecoder.Decode(newPtr, iter)
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*((*unsafe.Pointer)(ptr)) = newPtr
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} else {
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//reuse existing instance
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decoder.valueDecoder.Decode(*((*unsafe.Pointer)(ptr)), iter)
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}
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}
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type OptionalEncoder struct {
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ValueEncoder ValEncoder
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}
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func (encoder *OptionalEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
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if *((*unsafe.Pointer)(ptr)) == nil {
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stream.WriteNil()
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} else {
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encoder.ValueEncoder.Encode(*((*unsafe.Pointer)(ptr)), stream)
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}
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}
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func (encoder *OptionalEncoder) IsEmpty(ptr unsafe.Pointer) bool {
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return *((*unsafe.Pointer)(ptr)) == nil
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}
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type dereferenceEncoder struct {
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ValueEncoder ValEncoder
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}
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func (encoder *dereferenceEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
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if *((*unsafe.Pointer)(ptr)) == nil {
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stream.WriteNil()
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} else {
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encoder.ValueEncoder.Encode(*((*unsafe.Pointer)(ptr)), stream)
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}
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}
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func (encoder *dereferenceEncoder) IsEmpty(ptr unsafe.Pointer) bool {
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dePtr := *((*unsafe.Pointer)(ptr))
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if dePtr == nil {
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return true
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}
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return encoder.ValueEncoder.IsEmpty(dePtr)
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}
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func (encoder *dereferenceEncoder) IsEmbeddedPtrNil(ptr unsafe.Pointer) bool {
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deReferenced := *((*unsafe.Pointer)(ptr))
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if deReferenced == nil {
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return true
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}
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isEmbeddedPtrNil, converted := encoder.ValueEncoder.(IsEmbeddedPtrNil)
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if !converted {
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return false
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}
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fieldPtr := unsafe.Pointer(deReferenced)
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return isEmbeddedPtrNil.IsEmbeddedPtrNil(fieldPtr)
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}
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type referenceEncoder struct {
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encoder ValEncoder
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}
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func (encoder *referenceEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
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encoder.encoder.Encode(unsafe.Pointer(&ptr), stream)
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}
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func (encoder *referenceEncoder) IsEmpty(ptr unsafe.Pointer) bool {
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return encoder.encoder.IsEmpty(unsafe.Pointer(&ptr))
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}
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type referenceDecoder struct {
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decoder ValDecoder
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}
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func (decoder *referenceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
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decoder.decoder.Decode(unsafe.Pointer(&ptr), iter)
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}
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