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rwset.go
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rwset.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package rwset
import (
"fmt"
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric/protos/ledger/rwset/kvrwset"
)
func (txrws *TxReadWriteSet) DynamicSliceFields() []string {
if txrws.DataModel != TxReadWriteSet_KV {
// We only know how to handle TxReadWriteSet_KV types
return []string{}
}
return []string{"ns_rwset"}
}
func (txrws *TxReadWriteSet) DynamicSliceFieldProto(name string, index int, base proto.Message) (proto.Message, error) {
if name != txrws.DynamicSliceFields()[0] {
return nil, fmt.Errorf("Not a dynamic field: %s", name)
}
nsrw, ok := base.(*NsReadWriteSet)
if !ok {
return nil, fmt.Errorf("TxReadWriteSet must embed a NsReadWriteSet its dynamic field")
}
return &DynamicNsReadWriteSet{
NsReadWriteSet: nsrw,
DataModel: txrws.DataModel,
}, nil
}
type DynamicNsReadWriteSet struct {
*NsReadWriteSet
DataModel TxReadWriteSet_DataModel
}
func (dnrws *DynamicNsReadWriteSet) Underlying() proto.Message {
return dnrws.NsReadWriteSet
}
func (dnrws *DynamicNsReadWriteSet) StaticallyOpaqueFields() []string {
return []string{"rwset"}
}
func (dnrws *DynamicNsReadWriteSet) StaticallyOpaqueFieldProto(name string) (proto.Message, error) {
switch name {
case "rwset":
switch dnrws.DataModel {
case TxReadWriteSet_KV:
return &kvrwset.KVRWSet{}, nil
default:
return nil, fmt.Errorf("unknown data model type: %v", dnrws.DataModel)
}
default:
return nil, fmt.Errorf("not a marshaled field: %s", name)
}
}
func (dnrws *DynamicNsReadWriteSet) DynamicSliceFields() []string {
if dnrws.DataModel != TxReadWriteSet_KV {
// We only know how to handle TxReadWriteSet_KV types
return []string{}
}
return []string{"collection_hashed_rwset"}
}
func (dnrws *DynamicNsReadWriteSet) DynamicSliceFieldProto(name string, index int, base proto.Message) (proto.Message, error) {
if name != dnrws.DynamicSliceFields()[0] {
return nil, fmt.Errorf("Not a dynamic field: %s", name)
}
chrws, ok := base.(*CollectionHashedReadWriteSet)
if !ok {
return nil, fmt.Errorf("NsReadWriteSet must embed a *CollectionHashedReadWriteSet its dynamic field")
}
return &DynamicCollectionHashedReadWriteSet{
CollectionHashedReadWriteSet: chrws,
DataModel: dnrws.DataModel,
}, nil
}
type DynamicCollectionHashedReadWriteSet struct {
*CollectionHashedReadWriteSet
DataModel TxReadWriteSet_DataModel
}
func (dchrws *DynamicCollectionHashedReadWriteSet) Underlying() proto.Message {
return dchrws.CollectionHashedReadWriteSet
}
func (dchrws *DynamicCollectionHashedReadWriteSet) StaticallyOpaqueFields() []string {
return []string{"rwset"}
}
func (dchrws *DynamicCollectionHashedReadWriteSet) StaticallyOpaqueFieldProto(name string) (proto.Message, error) {
switch name {
case "rwset":
switch dchrws.DataModel {
case TxReadWriteSet_KV:
return &kvrwset.HashedRWSet{}, nil
default:
return nil, fmt.Errorf("unknown data model type: %v", dchrws.DataModel)
}
default:
return nil, fmt.Errorf("not a marshaled field: %s", name)
}
}
// Remove removes the rwset for the given <ns, coll> tuple. If after this removal,
// there are no more collection in the namespace <ns>, the whole namespace entry is removed
func (p *TxPvtReadWriteSet) Remove(ns, coll string) {
for i := 0; i < len(p.NsPvtRwset); i++ {
n := p.NsPvtRwset[i]
if n.Namespace != ns {
continue
}
n.remove(coll)
if len(n.CollectionPvtRwset) == 0 {
p.NsPvtRwset = append(p.NsPvtRwset[:i], p.NsPvtRwset[i+1:]...)
}
return
}
}
func (n *NsPvtReadWriteSet) remove(collName string) {
for i := 0; i < len(n.CollectionPvtRwset); i++ {
c := n.CollectionPvtRwset[i]
if c.CollectionName != collName {
continue
}
n.CollectionPvtRwset = append(n.CollectionPvtRwset[:i], n.CollectionPvtRwset[i+1:]...)
return
}
}