153 lines
3.6 KiB
Go
153 lines
3.6 KiB
Go
// VulcanizeDB
|
|
// Copyright © 2019 Vulcanize
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package ipld
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/ipfs/go-cid"
|
|
node "github.com/ipfs/go-ipld-format"
|
|
"github.com/multiformats/go-multihash"
|
|
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
)
|
|
|
|
// EthTxTrie (eth-tx-trie codec 0x92) represents
|
|
// a node from the transaction trie in ethereum.
|
|
type EthTxTrie struct {
|
|
*TrieNode
|
|
}
|
|
|
|
// Static (compile time) check that EthTxTrie satisfies the node.Node interface.
|
|
var _ node.Node = (*EthTxTrie)(nil)
|
|
|
|
/*
|
|
INPUT
|
|
*/
|
|
|
|
// To create a proper trie of the eth-tx-trie objects, it is required
|
|
// to input all transactions belonging to a forest in a single step.
|
|
// We are adding the transactions, and creating its trie on
|
|
// block body parsing time.
|
|
|
|
/*
|
|
OUTPUT
|
|
*/
|
|
|
|
// DecodeEthTxTrie returns an EthTxTrie object from its cid and rawdata.
|
|
func DecodeEthTxTrie(c cid.Cid, b []byte) (*EthTxTrie, error) {
|
|
tn, err := decodeTrieNode(c, b, decodeEthTxTrieLeaf)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &EthTxTrie{TrieNode: tn}, nil
|
|
}
|
|
|
|
// decodeEthTxTrieLeaf parses a eth-tx-trie leaf
|
|
//from decoded RLP elements
|
|
func decodeEthTxTrieLeaf(i []interface{}) ([]interface{}, error) {
|
|
var t types.Transaction
|
|
err := rlp.DecodeBytes(i[1].([]byte), &t)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
c, err := RawdataToCid(MEthTx, i[1].([]byte), multihash.KECCAK_256)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return []interface{}{
|
|
i[0].([]byte),
|
|
&EthTx{
|
|
Transaction: &t,
|
|
cid: c,
|
|
rawdata: i[1].([]byte),
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
/*
|
|
Block INTERFACE
|
|
*/
|
|
|
|
// RawData returns the binary of the RLP encode of the transaction.
|
|
func (t *EthTxTrie) RawData() []byte {
|
|
return t.rawdata
|
|
}
|
|
|
|
// Cid returns the cid of the transaction.
|
|
func (t *EthTxTrie) Cid() cid.Cid {
|
|
return t.cid
|
|
}
|
|
|
|
// String is a helper for output
|
|
func (t *EthTxTrie) String() string {
|
|
return fmt.Sprintf("<EthereumTxTrie %s>", t.cid)
|
|
}
|
|
|
|
// Loggable returns in a map the type of IPLD Link.
|
|
func (t *EthTxTrie) Loggable() map[string]interface{} {
|
|
return map[string]interface{}{
|
|
"type": "eth-tx-trie",
|
|
}
|
|
}
|
|
|
|
/*
|
|
EthTxTrie functions
|
|
*/
|
|
|
|
// txTrie wraps a localTrie for use on the transaction trie.
|
|
type txTrie struct {
|
|
*localTrie
|
|
}
|
|
|
|
// newTxTrie initializes and returns a txTrie.
|
|
func newTxTrie() *txTrie {
|
|
return &txTrie{
|
|
localTrie: newLocalTrie(),
|
|
}
|
|
}
|
|
|
|
// getNodes invokes the localTrie, which computes the root hash of the
|
|
// transaction trie and returns its database keys, to return a slice
|
|
// of EthTxTrie nodes.
|
|
func (tt *txTrie) getNodes() []*EthTxTrie {
|
|
keys := tt.getKeys()
|
|
var out []*EthTxTrie
|
|
it := tt.trie.NodeIterator([]byte{})
|
|
for it.Next(true) {
|
|
|
|
}
|
|
for _, k := range keys {
|
|
rawdata, err := tt.db.Get(k)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
c, err := RawdataToCid(MEthTxTrie, rawdata, multihash.KECCAK_256)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
tn := &TrieNode{
|
|
cid: c,
|
|
rawdata: rawdata,
|
|
}
|
|
out = append(out, &EthTxTrie{TrieNode: tn})
|
|
}
|
|
|
|
return out
|
|
}
|