369 lines
14 KiB
Go
369 lines
14 KiB
Go
// VulcanizeDB
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// Copyright © 2019 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package eth
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import (
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"fmt"
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"strconv"
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"github.com/cerc-io/ipld-eth-server/v4/pkg/shared"
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"github.com/ethereum/go-ethereum/statediff/trie_helpers"
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sdtypes "github.com/ethereum/go-ethereum/statediff/types"
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"github.com/jmoiron/sqlx"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/rlp"
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)
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const (
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RetrieveHeaderByHashPgStr = `SELECT cid, data
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FROM eth.header_cids
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INNER JOIN public.blocks ON (
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header_cids.mh_key = blocks.key
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AND header_cids.block_number = blocks.block_number
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)
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WHERE block_hash = $1`
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RetrieveUnclesPgStr = `SELECT uncle_cids.cid, data
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FROM eth.uncle_cids
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INNER JOIN eth.header_cids ON (
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uncle_cids.header_id = header_cids.block_hash
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AND uncle_cids.block_number = header_cids.block_number
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)
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INNER JOIN public.blocks ON (
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uncle_cids.mh_key = blocks.key
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AND uncle_cids.block_number = blocks.block_number
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)
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WHERE header_cids.block_hash = $1
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AND header_cids.block_number = $2
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ORDER BY uncle_cids.parent_hash`
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RetrieveUnclesByBlockHashPgStr = `SELECT uncle_cids.cid, data
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FROM eth.uncle_cids
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INNER JOIN eth.header_cids ON (
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uncle_cids.header_id = header_cids.block_hash
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AND uncle_cids.block_number = header_cids.block_number
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)
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INNER JOIN public.blocks ON (
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uncle_cids.mh_key = blocks.key
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AND uncle_cids.block_number = blocks.block_number
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)
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WHERE header_cids.block_hash = $1
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ORDER BY uncle_cids.parent_hash`
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RetrieveTransactionsPgStr = `SELECT transaction_cids.cid, data
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FROM eth.transaction_cids
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INNER JOIN eth.header_cids ON (
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transaction_cids.header_id = header_cids.block_hash
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AND transaction_cids.block_number = header_cids.block_number
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)
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INNER JOIN public.blocks ON (
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transaction_cids.mh_key = blocks.key
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AND transaction_cids.block_number = blocks.block_number
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)
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WHERE block_hash = $1
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AND header_cids.block_number = $2
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ORDER BY eth.transaction_cids.index ASC`
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RetrieveTransactionsByBlockHashPgStr = `SELECT transaction_cids.cid, data
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FROM eth.transaction_cids
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INNER JOIN eth.header_cids ON (
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transaction_cids.header_id = header_cids.block_hash
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AND transaction_cids.block_number = header_cids.block_number
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)
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INNER JOIN public.blocks ON (
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transaction_cids.mh_key = blocks.key
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AND transaction_cids.block_number = blocks.block_number
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)
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WHERE block_hash = $1
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ORDER BY eth.transaction_cids.index ASC`
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RetrieveReceiptsPgStr = `SELECT receipt_cids.leaf_cid, data, eth.transaction_cids.tx_hash
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FROM eth.receipt_cids
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INNER JOIN eth.transaction_cids ON (
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receipt_cids.tx_id = transaction_cids.tx_hash
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AND receipt_cids.header_id = transaction_cids.header_id
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AND receipt_cids.block_number = transaction_cids.block_number
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)
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INNER JOIN eth.header_cids ON (
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transaction_cids.header_id = header_cids.block_hash
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AND transaction_cids.block_number = header_cids.block_number
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)
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INNER JOIN public.blocks ON (
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receipt_cids.leaf_mh_key = blocks.key
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AND receipt_cids.block_number = blocks.block_number
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)
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WHERE block_hash = $1
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AND header_cids.block_number = $2
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ORDER BY eth.transaction_cids.index ASC`
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RetrieveReceiptsByBlockHashPgStr = `SELECT receipt_cids.leaf_cid, data, eth.transaction_cids.tx_hash
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FROM eth.receipt_cids
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INNER JOIN eth.transaction_cids ON (
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receipt_cids.tx_id = transaction_cids.tx_hash
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AND receipt_cids.header_id = transaction_cids.header_id
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AND receipt_cids.block_number = transaction_cids.block_number
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)
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INNER JOIN eth.header_cids ON (
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transaction_cids.header_id = header_cids.block_hash
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AND transaction_cids.block_number = header_cids.block_number
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)
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INNER JOIN public.blocks ON (
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receipt_cids.leaf_mh_key = blocks.key
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AND receipt_cids.block_number = blocks.block_number
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)
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WHERE block_hash = $1
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ORDER BY eth.transaction_cids.index ASC`
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RetrieveAccountByLeafKeyAndBlockHashPgStr = `SELECT state_cids.cid, state_cids.mh_key, state_cids.block_number, state_cids.node_type
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FROM eth.state_cids
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INNER JOIN eth.header_cids ON (
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state_cids.header_id = header_cids.block_hash
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AND state_cids.block_number = header_cids.block_number
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)
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WHERE state_leaf_key = $1
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AND header_cids.block_number <= (SELECT block_number
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FROM eth.header_cids
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WHERE block_hash = $2)
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AND header_cids.block_hash = (SELECT canonical_header_hash(header_cids.block_number))
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ORDER BY header_cids.block_number DESC
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LIMIT 1`
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RetrieveStorageLeafByAddressHashAndLeafKeyAndBlockHashPgStr = `SELECT cid, mh_key, block_number, node_type, state_leaf_removed FROM get_storage_at_by_hash($1, $2, $3)`
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)
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var EmptyNodeValue = make([]byte, common.HashLength)
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type rctIpldResult struct {
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LeafCID string `db:"leaf_cid"`
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Data []byte `db:"data"`
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TxHash string `db:"tx_hash"`
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}
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type ipldResult struct {
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CID string `db:"cid"`
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Data []byte `db:"data"`
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TxHash string `db:"tx_hash"`
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}
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type IPLDRetriever struct {
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db *sqlx.DB
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}
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func NewIPLDRetriever(db *sqlx.DB) *IPLDRetriever {
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return &IPLDRetriever{
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db: db,
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}
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}
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// RetrieveHeaderByHash returns the cid and rlp bytes for the header corresponding to the provided block hash
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func (r *IPLDRetriever) RetrieveHeaderByHash(tx *sqlx.Tx, hash common.Hash) (string, []byte, error) {
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headerResult := new(ipldResult)
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return headerResult.CID, headerResult.Data, tx.Get(headerResult, RetrieveHeaderByHashPgStr, hash.Hex())
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}
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// RetrieveUncles returns the cids and rlp bytes for the uncles corresponding to the provided block hash, number (of non-omner root block)
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func (r *IPLDRetriever) RetrieveUncles(tx *sqlx.Tx, hash common.Hash, number uint64) ([]string, [][]byte, error) {
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uncleResults := make([]ipldResult, 0)
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if err := tx.Select(&uncleResults, RetrieveUnclesPgStr, hash.Hex(), number); err != nil {
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return nil, nil, err
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}
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cids := make([]string, len(uncleResults))
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uncles := make([][]byte, len(uncleResults))
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for i, res := range uncleResults {
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cids[i] = res.CID
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uncles[i] = res.Data
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}
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return cids, uncles, nil
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}
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// RetrieveUnclesByBlockHash returns the cids and rlp bytes for the uncles corresponding to the provided block hash (of non-omner root block)
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func (r *IPLDRetriever) RetrieveUnclesByBlockHash(tx *sqlx.Tx, hash common.Hash) ([]string, [][]byte, error) {
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uncleResults := make([]ipldResult, 0)
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if err := tx.Select(&uncleResults, RetrieveUnclesByBlockHashPgStr, hash.Hex()); err != nil {
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return nil, nil, err
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}
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cids := make([]string, len(uncleResults))
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uncles := make([][]byte, len(uncleResults))
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for i, res := range uncleResults {
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cids[i] = res.CID
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uncles[i] = res.Data
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}
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return cids, uncles, nil
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}
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// RetrieveTransactions returns the cids and rlp bytes for the transactions corresponding to the provided block hash, number
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func (r *IPLDRetriever) RetrieveTransactions(tx *sqlx.Tx, hash common.Hash, number uint64) ([]string, [][]byte, error) {
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txResults := make([]ipldResult, 0)
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if err := tx.Select(&txResults, RetrieveTransactionsPgStr, hash.Hex(), number); err != nil {
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return nil, nil, err
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}
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cids := make([]string, len(txResults))
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txs := make([][]byte, len(txResults))
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for i, res := range txResults {
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cids[i] = res.CID
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txs[i] = res.Data
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}
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return cids, txs, nil
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}
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// RetrieveTransactionsByBlockHash returns the cids and rlp bytes for the transactions corresponding to the provided block hash
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func (r *IPLDRetriever) RetrieveTransactionsByBlockHash(tx *sqlx.Tx, hash common.Hash) ([]string, [][]byte, error) {
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txResults := make([]ipldResult, 0)
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if err := tx.Select(&txResults, RetrieveTransactionsByBlockHashPgStr, hash.Hex()); err != nil {
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return nil, nil, err
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}
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cids := make([]string, len(txResults))
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txs := make([][]byte, len(txResults))
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for i, res := range txResults {
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cids[i] = res.CID
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txs[i] = res.Data
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}
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return cids, txs, nil
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}
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// DecodeLeafNode decodes the leaf node data
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func DecodeLeafNode(node []byte) ([]byte, error) {
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var nodeElements []interface{}
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if err := rlp.DecodeBytes(node, &nodeElements); err != nil {
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return nil, err
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}
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ty, err := trie_helpers.CheckKeyType(nodeElements)
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if err != nil {
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return nil, err
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}
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if ty != sdtypes.Leaf {
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return nil, fmt.Errorf("expected leaf node but found %s", ty)
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}
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return nodeElements[1].([]byte), nil
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}
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// RetrieveReceipts returns the cids and rlp bytes for the receipts corresponding to the provided block hash, number.
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// cid returned corresponds to the leaf node data which contains the receipt.
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func (r *IPLDRetriever) RetrieveReceipts(tx *sqlx.Tx, hash common.Hash, number uint64) ([]string, [][]byte, []common.Hash, error) {
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rctResults := make([]rctIpldResult, 0)
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if err := tx.Select(&rctResults, RetrieveReceiptsPgStr, hash.Hex(), number); err != nil {
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return nil, nil, nil, err
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}
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cids := make([]string, len(rctResults))
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rcts := make([][]byte, len(rctResults))
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txs := make([]common.Hash, len(rctResults))
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for i, res := range rctResults {
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cids[i] = res.LeafCID
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nodeVal, err := DecodeLeafNode(res.Data)
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if err != nil {
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return nil, nil, nil, err
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}
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rcts[i] = nodeVal
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txs[i] = common.HexToHash(res.TxHash)
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}
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return cids, rcts, txs, nil
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}
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// RetrieveReceiptsByBlockHash returns the cids and rlp bytes for the receipts corresponding to the provided block hash.
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// cid returned corresponds to the leaf node data which contains the receipt.
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func (r *IPLDRetriever) RetrieveReceiptsByBlockHash(tx *sqlx.Tx, hash common.Hash) ([]string, [][]byte, []common.Hash, error) {
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rctResults := make([]rctIpldResult, 0)
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if err := tx.Select(&rctResults, RetrieveReceiptsByBlockHashPgStr, hash.Hex()); err != nil {
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return nil, nil, nil, err
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}
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cids := make([]string, len(rctResults))
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rcts := make([][]byte, len(rctResults))
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txs := make([]common.Hash, len(rctResults))
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for i, res := range rctResults {
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cids[i] = res.LeafCID
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nodeVal, err := DecodeLeafNode(res.Data)
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if err != nil {
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return nil, nil, nil, err
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}
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rcts[i] = nodeVal
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txs[i] = common.HexToHash(res.TxHash)
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}
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return cids, rcts, txs, nil
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}
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type nodeInfo struct {
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CID string `db:"cid"`
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MhKey string `db:"mh_key"`
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BlockNumber string `db:"block_number"`
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Data []byte `db:"data"`
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NodeType int `db:"node_type"`
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StateLeafRemoved bool `db:"state_leaf_removed"`
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}
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// RetrieveAccountByAddressAndBlockHash returns the cid and rlp bytes for the account corresponding to the provided address and block hash
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// TODO: ensure this handles deleted accounts appropriately
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func (r *IPLDRetriever) RetrieveAccountByAddressAndBlockHash(address common.Address, hash common.Hash) (string, []byte, error) {
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accountResult := new(nodeInfo)
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leafKey := crypto.Keccak256Hash(address.Bytes())
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if err := r.db.Get(accountResult, RetrieveAccountByLeafKeyAndBlockHashPgStr, leafKey.Hex(), hash.Hex()); err != nil {
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return "", nil, err
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}
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if accountResult.NodeType == sdtypes.Removed.Int() {
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return "", EmptyNodeValue, nil
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}
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blockNumber, err := strconv.ParseUint(accountResult.BlockNumber, 10, 64)
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if err != nil {
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return "", nil, err
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}
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accountResult.Data, err = shared.FetchIPLD(r.db, accountResult.MhKey, blockNumber)
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if err != nil {
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return "", nil, err
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}
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var i []interface{}
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if err := rlp.DecodeBytes(accountResult.Data, &i); err != nil {
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return "", nil, fmt.Errorf("error decoding state leaf node rlp: %s", err.Error())
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}
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if len(i) != 2 {
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return "", nil, fmt.Errorf("eth IPLDRetriever expected state leaf node rlp to decode into two elements")
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}
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return accountResult.CID, i[1].([]byte), nil
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}
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// RetrieveStorageAtByAddressAndStorageSlotAndBlockHash returns the cid and rlp bytes for the storage value corresponding to the provided address, storage slot, and block hash
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func (r *IPLDRetriever) RetrieveStorageAtByAddressAndStorageSlotAndBlockHash(address common.Address, key, hash common.Hash) (string, []byte, []byte, error) {
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storageResult := new(nodeInfo)
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stateLeafKey := crypto.Keccak256Hash(address.Bytes())
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storageHash := crypto.Keccak256Hash(key.Bytes())
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if err := r.db.Get(storageResult, RetrieveStorageLeafByAddressHashAndLeafKeyAndBlockHashPgStr, stateLeafKey.Hex(), storageHash.Hex(), hash.Hex()); err != nil {
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return "", nil, nil, err
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}
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if storageResult.StateLeafRemoved || storageResult.NodeType == sdtypes.Removed.Int() {
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return "", EmptyNodeValue, EmptyNodeValue, nil
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}
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blockNumber, err := strconv.ParseUint(storageResult.BlockNumber, 10, 64)
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if err != nil {
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return "", nil, nil, err
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}
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storageResult.Data, err = shared.FetchIPLD(r.db, storageResult.MhKey, blockNumber)
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if err != nil {
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return "", nil, nil, err
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}
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var i []interface{}
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if err := rlp.DecodeBytes(storageResult.Data, &i); err != nil {
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err = fmt.Errorf("error decoding storage leaf node rlp: %s", err.Error())
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return "", nil, nil, err
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}
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if len(i) != 2 {
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return "", nil, nil, fmt.Errorf("eth IPLDRetriever expected storage leaf node rlp to decode into two elements")
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}
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return storageResult.CID, storageResult.Data, i[1].([]byte), nil
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}
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