forked from cerc-io/ipld-eth-server
300 lines
9.4 KiB
Go
300 lines
9.4 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 repositories
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import (
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"database/sql"
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"errors"
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log "github.com/sirupsen/logrus"
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"github.com/jmoiron/sqlx"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"github.com/vulcanize/vulcanizedb/pkg/datastore"
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"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
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)
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const (
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blocksFromHeadBeforeFinal = 20
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)
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var ErrBlockExists = errors.New("Won't add block that already exists.")
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type BlockRepository struct {
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database *postgres.DB
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}
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func NewBlockRepository(database *postgres.DB) *BlockRepository {
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return &BlockRepository{database: database}
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}
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func (blockRepository BlockRepository) SetBlocksStatus(chainHead int64) error {
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cutoff := chainHead - blocksFromHeadBeforeFinal
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_, err := blockRepository.database.Exec(`
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UPDATE blocks SET is_final = TRUE
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WHERE is_final = FALSE AND number < $1`,
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cutoff)
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return err
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}
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func (blockRepository BlockRepository) CreateOrUpdateBlock(block core.Block) (int64, error) {
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var err error
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var blockId int64
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retrievedBlockHash, ok := blockRepository.getBlockHash(block)
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if !ok {
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return blockRepository.insertBlock(block)
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}
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if ok && retrievedBlockHash != block.Hash {
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err = blockRepository.removeBlock(block.Number)
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if err != nil {
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return 0, err
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}
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return blockRepository.insertBlock(block)
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}
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return blockId, ErrBlockExists
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}
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func (blockRepository BlockRepository) MissingBlockNumbers(startingBlockNumber int64, highestBlockNumber int64, nodeId string) []int64 {
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numbers := make([]int64, 0)
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err := blockRepository.database.Select(&numbers,
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`SELECT all_block_numbers
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FROM (
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SELECT generate_series($1::INT, $2::INT) AS all_block_numbers) series
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WHERE all_block_numbers NOT IN (
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SELECT number FROM blocks WHERE eth_node_fingerprint = $3
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) `,
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startingBlockNumber,
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highestBlockNumber, nodeId)
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if err != nil {
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log.Error("MissingBlockNumbers: error getting blocks: ", err)
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}
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return numbers
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}
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func (blockRepository BlockRepository) GetBlock(blockNumber int64) (core.Block, error) {
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blockRows := blockRepository.database.QueryRowx(
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`SELECT id,
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number,
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gaslimit,
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gasused,
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time,
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difficulty,
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hash,
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nonce,
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parenthash,
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size,
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uncle_hash,
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is_final,
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miner,
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extra_data,
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reward,
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uncles_reward
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FROM blocks
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WHERE eth_node_id = $1 AND number = $2`, blockRepository.database.NodeID, blockNumber)
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savedBlock, err := blockRepository.loadBlock(blockRows)
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if err != nil {
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switch err {
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case sql.ErrNoRows:
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return core.Block{}, datastore.ErrBlockDoesNotExist(blockNumber)
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default:
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log.Error("GetBlock: error loading blocks: ", err)
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return savedBlock, err
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}
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}
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return savedBlock, nil
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}
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func (blockRepository BlockRepository) insertBlock(block core.Block) (int64, error) {
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var blockId int64
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tx, _ := blockRepository.database.Beginx()
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err := tx.QueryRow(
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`INSERT INTO blocks
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(eth_node_id, number, gaslimit, gasused, time, difficulty, hash, nonce, parenthash, size, uncle_hash, is_final, miner, extra_data, reward, uncles_reward, eth_node_fingerprint)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17)
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RETURNING id `,
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blockRepository.database.NodeID, block.Number, block.GasLimit, block.GasUsed, block.Time, block.Difficulty, block.Hash, block.Nonce, block.ParentHash, block.Size, block.UncleHash, block.IsFinal, block.Miner, block.ExtraData, block.Reward, block.UnclesReward, blockRepository.database.Node.ID).
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Scan(&blockId)
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if err != nil {
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tx.Rollback()
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return 0, err
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}
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if len(block.Transactions) > 0 {
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err = blockRepository.createTransactions(tx, blockId, block.Transactions)
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if err != nil {
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tx.Rollback()
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return 0, postgres.ErrDBInsertFailed
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}
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}
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tx.Commit()
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return blockId, nil
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}
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func (blockRepository BlockRepository) createTransactions(tx *sqlx.Tx, blockId int64, transactions []core.Transaction) error {
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for _, transaction := range transactions {
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err := blockRepository.createTransaction(tx, blockId, transaction)
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if err != nil {
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return err
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}
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}
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return nil
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}
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//Fields like value lose precision if converted to
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//int64 so convert to string instead. But nil
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//big.Int -> string = "" so convert to "0"
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func nullStringToZero(s string) string {
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if s == "" {
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return "0"
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}
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return s
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}
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func (blockRepository BlockRepository) createTransaction(tx *sqlx.Tx, blockId int64, transaction core.Transaction) error {
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_, err := tx.Exec(
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`INSERT INTO transactions
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(block_id, hash, nonce, tx_to, tx_from, gaslimit, gasprice, value, input_data)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8::NUMERIC, $9)
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RETURNING id`,
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blockId, transaction.Hash, transaction.Nonce, transaction.To, transaction.From, transaction.GasLimit, transaction.GasPrice, nullStringToZero(transaction.Value), transaction.Data)
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if err != nil {
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return err
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}
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if hasReceipt(transaction) {
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receiptId, err := blockRepository.createReceipt(tx, blockId, transaction.Receipt)
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if err != nil {
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return err
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}
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if hasLogs(transaction) {
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err = blockRepository.createLogs(tx, transaction.Receipt.Logs, receiptId)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func hasLogs(transaction core.Transaction) bool {
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return len(transaction.Receipt.Logs) > 0
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}
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func hasReceipt(transaction core.Transaction) bool {
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return transaction.Receipt.TxHash != ""
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}
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func (blockRepository BlockRepository) createReceipt(tx *sqlx.Tx, blockId int64, receipt core.Receipt) (int, error) {
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//Not currently persisting log bloom filters
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var receiptId int
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err := tx.QueryRow(
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`INSERT INTO receipts
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(contract_address, tx_hash, cumulative_gas_used, gas_used, state_root, status, block_id)
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VALUES ($1, $2, $3, $4, $5, $6, $7)
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RETURNING id`,
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receipt.ContractAddress, receipt.TxHash, receipt.CumulativeGasUsed, receipt.GasUsed, receipt.StateRoot, receipt.Status, blockId).Scan(&receiptId)
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if err != nil {
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log.Error("createReceipt: error inserting receipt: ", err)
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return receiptId, err
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}
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return receiptId, nil
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}
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func (blockRepository BlockRepository) getBlockHash(block core.Block) (string, bool) {
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var retrievedBlockHash string
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blockRepository.database.Get(&retrievedBlockHash,
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`SELECT hash
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FROM blocks
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WHERE number = $1 AND eth_node_id = $2`,
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block.Number, blockRepository.database.NodeID)
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return retrievedBlockHash, blockExists(retrievedBlockHash)
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}
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func (blockRepository BlockRepository) createLogs(tx *sqlx.Tx, logs []core.Log, receiptId int) error {
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for _, tlog := range logs {
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_, err := tx.Exec(
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`INSERT INTO logs (block_number, address, tx_hash, index, topic0, topic1, topic2, topic3, data, receipt_id)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
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`,
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tlog.BlockNumber, tlog.Address, tlog.TxHash, tlog.Index, tlog.Topics[0], tlog.Topics[1], tlog.Topics[2], tlog.Topics[3], tlog.Data, receiptId,
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)
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if err != nil {
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return postgres.ErrDBInsertFailed
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}
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}
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return nil
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}
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func blockExists(retrievedBlockHash string) bool {
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return retrievedBlockHash != ""
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}
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func (blockRepository BlockRepository) removeBlock(blockNumber int64) error {
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_, err := blockRepository.database.Exec(
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`DELETE FROM
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blocks
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WHERE number=$1 AND eth_node_id=$2`,
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blockNumber, blockRepository.database.NodeID)
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if err != nil {
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return postgres.ErrDBDeleteFailed
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}
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return nil
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}
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func (blockRepository BlockRepository) loadBlock(blockRows *sqlx.Row) (core.Block, error) {
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type b struct {
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ID int
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core.Block
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}
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var block b
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err := blockRows.StructScan(&block)
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if err != nil {
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log.Error("loadBlock: error loading block: ", err)
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return core.Block{}, err
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}
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transactionRows, err := blockRepository.database.Queryx(`
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SELECT hash,
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nonce,
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tx_to,
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tx_from,
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gaslimit,
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gasprice,
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value,
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input_data
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FROM transactions
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WHERE block_id = $1
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ORDER BY hash`, block.ID)
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if err != nil {
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log.Error("loadBlock: error fetting transactions: ", err)
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return core.Block{}, err
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}
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block.Transactions = blockRepository.LoadTransactions(transactionRows)
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return block.Block, nil
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}
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func (blockRepository BlockRepository) LoadTransactions(transactionRows *sqlx.Rows) []core.Transaction {
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var transactions []core.Transaction
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for transactionRows.Next() {
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var transaction core.Transaction
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err := transactionRows.StructScan(&transaction)
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if err != nil {
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log.Fatal(err)
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}
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transactions = append(transactions, transaction)
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}
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return transactions
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}
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