ipld-eth-server/pkg/btc/indexer.go
2020-08-04 22:35:05 -05:00

133 lines
4.8 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 btc
import (
"fmt"
"github.com/sirupsen/logrus"
"github.com/jmoiron/sqlx"
"github.com/lib/pq"
"github.com/vulcanize/ipfs-blockchain-watcher/pkg/postgres"
"github.com/vulcanize/ipfs-blockchain-watcher/pkg/shared"
)
type CIDIndexer struct {
db *postgres.DB
}
func NewCIDIndexer(db *postgres.DB) *CIDIndexer {
return &CIDIndexer{
db: db,
}
}
func (in *CIDIndexer) Index(cids shared.CIDsForIndexing) error {
cidWrapper, ok := cids.(*CIDPayload)
if !ok {
return fmt.Errorf("btc indexer expected cids type %T got %T", &CIDPayload{}, cids)
}
// Begin new db tx
tx, err := in.db.Beginx()
if err != nil {
return err
}
defer func() {
if p := recover(); p != nil {
shared.Rollback(tx)
panic(p)
} else if err != nil {
shared.Rollback(tx)
} else {
err = tx.Commit()
}
}()
headerID, err := in.indexHeaderCID(tx, cidWrapper.HeaderCID)
if err != nil {
logrus.Error("btc indexer error when indexing header")
return err
}
err = in.indexTransactionCIDs(tx, cidWrapper.TransactionCIDs, headerID)
if err != nil {
logrus.Error("btc indexer error when indexing transactions")
}
return err
}
func (in *CIDIndexer) indexHeaderCID(tx *sqlx.Tx, header HeaderModel) (int64, error) {
var headerID int64
err := tx.QueryRowx(`INSERT INTO btc.header_cids (block_number, block_hash, parent_hash, cid, timestamp, bits, node_id, mh_key, times_validated)
VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
ON CONFLICT (block_number, block_hash) DO UPDATE SET (parent_hash, cid, timestamp, bits, node_id, mh_key, times_validated) = ($3, $4, $5, $6, $7, $8, btc.header_cids.times_validated + 1)
RETURNING id`,
header.BlockNumber, header.BlockHash, header.ParentHash, header.CID, header.Timestamp, header.Bits, in.db.NodeID, header.MhKey, 1).Scan(&headerID)
return headerID, err
}
func (in *CIDIndexer) indexTransactionCIDs(tx *sqlx.Tx, transactions []TxModelWithInsAndOuts, headerID int64) error {
for _, transaction := range transactions {
txID, err := in.indexTransactionCID(tx, transaction, headerID)
if err != nil {
logrus.Error("btc indexer error when indexing header")
return err
}
for _, input := range transaction.TxInputs {
if err := in.indexTxInput(tx, input, txID); err != nil {
logrus.Error("btc indexer error when indexing tx inputs")
return err
}
}
for _, output := range transaction.TxOutputs {
if err := in.indexTxOutput(tx, output, txID); err != nil {
logrus.Error("btc indexer error when indexing tx outputs")
return err
}
}
}
return nil
}
func (in *CIDIndexer) indexTransactionCID(tx *sqlx.Tx, transaction TxModelWithInsAndOuts, headerID int64) (int64, error) {
var txID int64
err := tx.QueryRowx(`INSERT INTO btc.transaction_cids (header_id, tx_hash, index, cid, segwit, witness_hash, mh_key)
VALUES ($1, $2, $3, $4, $5, $6, $7)
ON CONFLICT (tx_hash) DO UPDATE SET (header_id, index, cid, segwit, witness_hash, mh_key) = ($1, $3, $4, $5, $6, $7)
RETURNING id`,
headerID, transaction.TxHash, transaction.Index, transaction.CID, transaction.SegWit, transaction.WitnessHash, transaction.MhKey).Scan(&txID)
return txID, err
}
func (in *CIDIndexer) indexTxInput(tx *sqlx.Tx, txInput TxInput, txID int64) error {
_, err := tx.Exec(`INSERT INTO btc.tx_inputs (tx_id, index, witness, sig_script, outpoint_tx_hash, outpoint_index)
VALUES ($1, $2, $3, $4, $5, $6)
ON CONFLICT (tx_id, index) DO UPDATE SET (witness, sig_script, outpoint_tx_hash, outpoint_index) = ($3, $4, $5, $6)`,
txID, txInput.Index, pq.Array(txInput.TxWitness), txInput.SignatureScript, txInput.PreviousOutPointHash, txInput.PreviousOutPointIndex)
return err
}
func (in *CIDIndexer) indexTxOutput(tx *sqlx.Tx, txOuput TxOutput, txID int64) error {
_, err := tx.Exec(`INSERT INTO btc.tx_outputs (tx_id, index, value, pk_script, script_class, addresses, required_sigs)
VALUES ($1, $2, $3, $4, $5, $6, $7)
ON CONFLICT (tx_id, index) DO UPDATE SET (value, pk_script, script_class, addresses, required_sigs) = ($3, $4, $5, $6, $7)`,
txID, txOuput.Index, txOuput.Value, txOuput.PkScript, txOuput.ScriptClass, txOuput.Addresses, txOuput.RequiredSigs)
return err
}