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db.go
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db.go
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package trie
import (
"github.com/MadBase/MadNet/utils"
"github.com/dgraph-io/badger/v2"
)
func prefixNode() []byte {
return []byte("T")
}
func prefixCommitHeight() []byte {
return []byte("H")
}
func prefixRootHash() []byte {
return []byte("R")
}
func (db *cacheDB) getNodeDB(txn *badger.Txn, key []byte) ([]byte, error) {
key = convNilToBytes(key)
var node Hash
copy(node[:], key)
v, err := GetNodeDB(txn, db.prefixFunc(), key)
if err != nil {
return nil, err
}
return v, nil
}
func getNodeDB(txn *badger.Txn, prefix []byte, key []byte) ([]byte, error) {
nodekey := []byte{}
nodekey = append(nodekey, prefix...)
nodekey = append(nodekey, prefixNode()...)
nodekey = append(nodekey, key...)
value, err := utils.GetValue(txn, nodekey)
if err != nil {
if err == badger.ErrKeyNotFound {
return nil, nil
}
return nil, err
}
return value, nil
}
func (db *cacheDB) setNodeDB(txn *badger.Txn, key, value []byte) error {
var node Hash
copy(node[:], key)
err := setNodeDB(txn, db.prefixFunc(), key, value)
if err != nil {
return err
}
return nil
}
func setNodeDB(txn *badger.Txn, prefix []byte, key, value []byte) error {
key = convNilToBytes(key)
value = convNilToBytes(value)
nodekey := []byte{}
nodekey = append(nodekey, prefix...)
nodekey = append(nodekey, prefixNode()...)
nodekey = append(nodekey, key...)
return utils.SetValue(txn, nodekey, value)
}
func (db *cacheDB) getCommitHeightDB(txn *badger.Txn) (uint32, error) {
return getCommitHeightDB(txn, db.prefixFunc())
}
func getCommitHeightDB(txn *badger.Txn, prefix []byte) (uint32, error) {
nodekey := []byte{}
nodekey = append(nodekey, prefix...)
nodekey = append(nodekey, prefixCommitHeight()...)
v, err := utils.GetValue(txn, nodekey)
if err != nil {
if err == badger.ErrKeyNotFound {
return 0, nil
}
return 0, err
}
return utils.UnmarshalUint32(v)
}
func (db *cacheDB) setCommitHeightDB(txn *badger.Txn, value uint32) error {
return setCommitHeightDB(txn, db.prefixFunc(), value)
}
func setCommitHeightDB(txn *badger.Txn, prefix []byte, value uint32) error {
nodekey := []byte{}
nodekey = append(nodekey, prefix...)
nodekey = append(nodekey, prefixCommitHeight()...)
v := utils.MarshalUint32(value)
return utils.SetValue(txn, nodekey, v)
}
func (db *cacheDB) getRootForHeightDB(txn *badger.Txn, height uint32) ([]byte, error) {
nodekey := []byte{}
nodekey = append(nodekey, db.prefixFunc()...)
nodekey = append(nodekey, prefixRootHash()...)
nodekey = append(nodekey, utils.MarshalUint32(height)...)
return utils.GetValue(txn, nodekey)
}
func (db *cacheDB) setRootForHeightDB(txn *badger.Txn, height uint32, root []byte) error {
return setRootForHeightDB(txn, db.prefixFunc(), height, root)
}
func setRootForHeightDB(txn *badger.Txn, prefix []byte, height uint32, root []byte) error {
nodekey := []byte{}
nodekey = append(nodekey, prefix...)
nodekey = append(nodekey, prefixRootHash()...)
nodekey = append(nodekey, utils.MarshalUint32(height)...)
return utils.SetValue(txn, nodekey, root)
}