730 lines
18 KiB
Go
730 lines
18 KiB
Go
package wallet
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import (
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"database/sql"
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"database/sql/driver"
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"encoding/json"
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"errors"
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"math/big"
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"reflect"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/log"
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)
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// DBHeader fields from header that are stored in database.
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type DBHeader struct {
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Number *big.Int
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Hash common.Hash
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Timestamp uint64
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Erc20Transfer *Transfer
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Network uint64
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Address common.Address
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// Head is true if the block was a head at the time it was pulled from chain.
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Head bool
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// Loaded is true if trasfers from this block has been already fetched
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Loaded bool
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}
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func toDBHeader(header *types.Header) *DBHeader {
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return &DBHeader{
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Hash: header.Hash(),
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Number: header.Number,
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Timestamp: header.Time,
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Loaded: false,
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}
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}
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func toHead(header *types.Header) *DBHeader {
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dbheader := toDBHeader(header)
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dbheader.Head = true
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return dbheader
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}
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// SyncOption is used to specify that application processed transfers for that block.
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type SyncOption uint
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// SQLBigInt type for storing uint256 in the databse.
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// FIXME(dshulyak) SQL big int is max 64 bits. Maybe store as bytes in big endian and hope
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// that lexographical sorting will work.
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type SQLBigInt big.Int
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// Scan implements interface.
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func (i *SQLBigInt) Scan(value interface{}) error {
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val, ok := value.(int64)
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if !ok {
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return errors.New("not an integer")
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}
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(*big.Int)(i).SetInt64(val)
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return nil
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}
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// Value implements interface.
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func (i *SQLBigInt) Value() (driver.Value, error) {
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if !(*big.Int)(i).IsInt64() {
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return nil, errors.New("not an int64")
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}
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return (*big.Int)(i).Int64(), nil
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}
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// JSONBlob type for marshaling/unmarshaling inner type to json.
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type JSONBlob struct {
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data interface{}
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}
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// Scan implements interface.
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func (blob *JSONBlob) Scan(value interface{}) error {
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if value == nil || reflect.ValueOf(blob.data).IsNil() {
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return nil
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}
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bytes, ok := value.([]byte)
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if !ok {
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return errors.New("not a byte slice")
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}
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if len(bytes) == 0 {
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return nil
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}
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err := json.Unmarshal(bytes, blob.data)
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return err
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}
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// Value implements interface.
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func (blob *JSONBlob) Value() (driver.Value, error) {
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if blob.data == nil || reflect.ValueOf(blob.data).IsNil() {
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return nil, nil
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}
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return json.Marshal(blob.data)
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}
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func NewDB(db *sql.DB, network uint64) *Database {
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return &Database{db: db, network: network}
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}
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// Database sql wrapper for operations with wallet objects.
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type Database struct {
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db *sql.DB
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network uint64
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}
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// Close closes database.
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func (db Database) Close() error {
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return db.db.Close()
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}
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func (db Database) ProcessBlocks(account common.Address, from *big.Int, to *big.Int, headers []*DBHeader) (err error) {
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var (
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tx *sql.Tx
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)
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tx, err = db.db.Begin()
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if err != nil {
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return err
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}
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defer func() {
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if err == nil {
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err = tx.Commit()
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return
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}
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_ = tx.Rollback()
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}()
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err = insertBlocksWithTransactions(tx, account, db.network, headers)
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if err != nil {
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return
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}
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err = insertRange(tx, account, db.network, from, to)
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if err != nil {
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return
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}
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return
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}
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func (db Database) SaveBlocks(account common.Address, headers []*DBHeader) (err error) {
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var (
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tx *sql.Tx
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)
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tx, err = db.db.Begin()
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if err != nil {
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return err
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}
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defer func() {
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if err == nil {
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err = tx.Commit()
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return
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}
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_ = tx.Rollback()
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}()
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err = insertBlocksWithTransactions(tx, account, db.network, headers)
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if err != nil {
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return
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}
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return
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}
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// ProcessTranfers atomically adds/removes blocks and adds new tranfers.
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func (db Database) ProcessTranfers(transfers []Transfer, removed []*DBHeader) (err error) {
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var (
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tx *sql.Tx
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)
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tx, err = db.db.Begin()
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if err != nil {
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return err
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}
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defer func() {
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if err == nil {
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err = tx.Commit()
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return
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}
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_ = tx.Rollback()
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}()
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err = deleteHeaders(tx, removed)
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if err != nil {
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return
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}
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err = updateOrInsertTransfers(tx, db.network, transfers)
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if err != nil {
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return
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}
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return
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}
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// SaveTranfers
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func (db Database) SaveTranfers(address common.Address, transfers []Transfer, blocks []*big.Int) (err error) {
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var (
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tx *sql.Tx
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)
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tx, err = db.db.Begin()
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if err != nil {
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return err
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}
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defer func() {
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if err == nil {
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err = tx.Commit()
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return
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}
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_ = tx.Rollback()
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}()
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err = updateOrInsertTransfers(tx, db.network, transfers)
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if err != nil {
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return
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}
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err = markBlocksAsLoaded(tx, address, db.network, blocks)
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if err != nil {
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return
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}
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return
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}
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// GetTransfersInRange loads transfers for a given address between two blocks.
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func (db *Database) GetTransfersInRange(address common.Address, start, end *big.Int) (rst []Transfer, err error) {
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query := newTransfersQuery().FilterNetwork(db.network).FilterAddress(address).FilterStart(start).FilterEnd(end).FilterLoaded(1)
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rows, err := db.db.Query(query.String(), query.Args()...)
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if err != nil {
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return
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}
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defer rows.Close()
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return query.Scan(rows)
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}
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// GetTransfersByAddress loads transfers for a given address between two blocks.
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func (db *Database) GetTransfersByAddress(address common.Address, fromBlock *big.Int, limit int64) (rst []Transfer, err error) {
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query := newTransfersQuery().
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FilterNetwork(db.network).
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FilterAddress(address).
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FilterEnd(fromBlock).
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FilterLoaded(1).
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Limit(limit)
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rows, err := db.db.Query(query.String(), query.Args()...)
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if err != nil {
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return
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}
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defer rows.Close()
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return query.Scan(rows)
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}
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// GetTransfersByAddress loads transfers for a given address between two blocks.
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func (db *Database) GetBlocksByAddress(address common.Address, limit int) (rst []*big.Int, err error) {
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query := `SELECT blk_number FROM blocks
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WHERE address = ? AND network_id = ? AND loaded = 0
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ORDER BY blk_number DESC
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LIMIT ?`
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rows, err := db.db.Query(query, address, db.network, limit)
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if err != nil {
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return
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}
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defer rows.Close()
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for rows.Next() {
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block := &big.Int{}
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err = rows.Scan((*SQLBigInt)(block))
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if err != nil {
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return nil, err
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}
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rst = append(rst, block)
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}
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return rst, nil
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}
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func (db *Database) RemoveBlockWithTransfer(address common.Address, block *big.Int) error {
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query := `DELETE FROM blocks
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WHERE address = ?
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AND blk_number = ?
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AND network_id = ?`
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_, err := db.db.Exec(query, address, (*SQLBigInt)(block), db.network)
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if err != nil {
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return err
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}
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return nil
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}
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func (db *Database) GetLastBlockByAddress(address common.Address, limit int) (rst *big.Int, err error) {
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query := `SELECT * FROM
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(SELECT blk_number FROM blocks WHERE address = ? AND network_id = ? ORDER BY blk_number DESC LIMIT ?)
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ORDER BY blk_number LIMIT 1`
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rows, err := db.db.Query(query, address, db.network, limit)
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if err != nil {
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return
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}
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defer rows.Close()
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if rows.Next() {
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block := &big.Int{}
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err = rows.Scan((*SQLBigInt)(block))
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if err != nil {
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return nil, err
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}
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return block, nil
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}
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return nil, nil
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}
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func (db *Database) GetLastSavedBlock() (rst *DBHeader, err error) {
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query := `SELECT blk_number, blk_hash
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FROM blocks
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WHERE network_id = ?
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ORDER BY blk_number DESC LIMIT 1`
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rows, err := db.db.Query(query, db.network)
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if err != nil {
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return
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}
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defer rows.Close()
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if rows.Next() {
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header := &DBHeader{Hash: common.Hash{}, Number: new(big.Int)}
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err = rows.Scan((*SQLBigInt)(header.Number), &header.Hash)
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if err != nil {
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return nil, err
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}
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return header, nil
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}
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return nil, nil
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}
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func (db *Database) GetBlocks() (rst []*DBHeader, err error) {
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query := `SELECT blk_number, blk_hash, address FROM blocks`
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rows, err := db.db.Query(query, db.network)
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if err != nil {
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return
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}
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defer rows.Close()
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rst = []*DBHeader{}
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for rows.Next() {
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header := &DBHeader{Hash: common.Hash{}, Number: new(big.Int)}
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err = rows.Scan((*SQLBigInt)(header.Number), &header.Hash, &header.Address)
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if err != nil {
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return nil, err
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}
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rst = append(rst, header)
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}
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return rst, nil
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}
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func (db *Database) GetLastSavedBlockBefore(block *big.Int) (rst *DBHeader, err error) {
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query := `SELECT blk_number, blk_hash
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FROM blocks
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WHERE network_id = ? AND blk_number < ?
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ORDER BY blk_number DESC LIMIT 1`
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rows, err := db.db.Query(query, db.network, (*SQLBigInt)(block))
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if err != nil {
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return
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}
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defer rows.Close()
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if rows.Next() {
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header := &DBHeader{Hash: common.Hash{}, Number: new(big.Int)}
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err = rows.Scan((*SQLBigInt)(header.Number), &header.Hash)
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if err != nil {
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return nil, err
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}
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return header, nil
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}
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return nil, nil
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}
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func (db *Database) GetFirstKnownBlock(address common.Address) (rst *big.Int, err error) {
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query := `SELECT blk_from FROM blocks_ranges
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WHERE address = ?
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AND network_id = ?
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ORDER BY blk_from
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LIMIT 1`
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rows, err := db.db.Query(query, address, db.network)
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if err != nil {
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return
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}
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defer rows.Close()
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if rows.Next() {
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block := &big.Int{}
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err = rows.Scan((*SQLBigInt)(block))
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if err != nil {
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return nil, err
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}
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return block, nil
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}
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return nil, nil
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}
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func (db *Database) GetLastKnownBlockByAddress(address common.Address) (rst *big.Int, err error) {
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query := `SELECT blk_to FROM blocks_ranges
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WHERE address = ?
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AND network_id = ?
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ORDER BY blk_to DESC
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LIMIT 1`
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rows, err := db.db.Query(query, address, db.network)
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if err != nil {
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return
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}
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defer rows.Close()
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if rows.Next() {
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block := &big.Int{}
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err = rows.Scan((*SQLBigInt)(block))
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if err != nil {
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return nil, err
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}
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return block, nil
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}
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return nil, nil
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}
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func (db *Database) GetLastKnownBlockByAddresses(addresses []common.Address) (map[common.Address]*big.Int, []common.Address, error) {
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res := map[common.Address]*big.Int{}
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accountsWithoutHistory := []common.Address{}
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for _, address := range addresses {
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block, err := db.GetLastKnownBlockByAddress(address)
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if err != nil {
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log.Info("Can't get last block", "error", err)
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return nil, nil, err
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}
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if block != nil {
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res[address] = block
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} else {
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accountsWithoutHistory = append(accountsWithoutHistory, address)
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}
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}
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return res, accountsWithoutHistory, nil
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}
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// GetTransfers load transfers transfer betweeen two blocks.
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func (db *Database) GetTransfers(start, end *big.Int) (rst []Transfer, err error) {
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query := newTransfersQuery().FilterNetwork(db.network).FilterStart(start).FilterEnd(end).FilterLoaded(1)
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rows, err := db.db.Query(query.String(), query.Args()...)
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if err != nil {
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return
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}
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defer rows.Close()
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return query.Scan(rows)
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}
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func (db *Database) GetPreloadedTransactions(address common.Address, blockHash common.Hash) (rst []Transfer, err error) {
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query := newTransfersQuery().
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FilterNetwork(db.network).
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FilterAddress(address).
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FilterBlockHash(blockHash).
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FilterLoaded(0)
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rows, err := db.db.Query(query.String(), query.Args()...)
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if err != nil {
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return
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}
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defer rows.Close()
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return query.Scan(rows)
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}
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func (db *Database) GetTransactionsLog(address common.Address, transactionHash common.Hash) (*types.Log, error) {
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l := &types.Log{}
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err := db.db.QueryRow("SELECT log FROM transfers WHERE network_id = ? AND address = ? AND hash = ?",
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db.network, address, transactionHash).
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Scan(&JSONBlob{l})
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if err == nil {
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return l, nil
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}
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return nil, err
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}
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// SaveHeaders stores a list of headers atomically.
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func (db *Database) SaveHeaders(headers []*types.Header, address common.Address) (err error) {
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var (
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tx *sql.Tx
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insert *sql.Stmt
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)
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tx, err = db.db.Begin()
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if err != nil {
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return
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}
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insert, err = tx.Prepare("INSERT INTO blocks(network_id, blk_number, blk_hash, address) VALUES (?, ?, ?, ?)")
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if err != nil {
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return
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}
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defer func() {
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if err == nil {
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err = tx.Commit()
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} else {
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_ = tx.Rollback()
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}
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}()
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for _, h := range headers {
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_, err = insert.Exec(db.network, (*SQLBigInt)(h.Number), h.Hash(), address)
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if err != nil {
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return
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}
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}
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return
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}
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// GetHeaderByNumber selects header using block number.
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func (db *Database) GetHeaderByNumber(number *big.Int) (header *DBHeader, err error) {
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header = &DBHeader{Hash: common.Hash{}, Number: new(big.Int)}
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err = db.db.QueryRow("SELECT blk_hash, blk_number FROM blocks WHERE blk_number = ? AND network_id = ?", (*SQLBigInt)(number), db.network).Scan(&header.Hash, (*SQLBigInt)(header.Number))
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if err == nil {
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return header, nil
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}
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return nil, err
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}
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type Token struct {
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Address common.Address `json:"address"`
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Name string `json:"name"`
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Symbol string `json:"symbol"`
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Color string `json:"color"`
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// Decimals defines how divisible the token is. For example, 0 would be
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// indivisible, whereas 18 would allow very small amounts of the token
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// to be traded.
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Decimals uint `json:"decimals"`
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}
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func (db *Database) GetCustomTokens() ([]*Token, error) {
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rows, err := db.db.Query(`SELECT address, name, symbol, decimals, color FROM tokens WHERE network_id = ?`, db.network)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var rst []*Token
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for rows.Next() {
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token := &Token{}
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err := rows.Scan(&token.Address, &token.Name, &token.Symbol, &token.Decimals, &token.Color)
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if err != nil {
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return nil, err
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}
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rst = append(rst, token)
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}
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return rst, nil
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}
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func (db *Database) AddCustomToken(token Token) error {
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insert, err := db.db.Prepare("INSERT OR REPLACE INTO TOKENS (network_id, address, name, symbol, decimals, color) VALUES (?, ?, ?, ?, ?, ?)")
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if err != nil {
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return err
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}
|
|
_, err = insert.Exec(db.network, token.Address, token.Name, token.Symbol, token.Decimals, token.Color)
|
|
return err
|
|
}
|
|
|
|
func (db *Database) DeleteCustomToken(address common.Address) error {
|
|
_, err := db.db.Exec(`DELETE FROM TOKENS WHERE address = ?`, address)
|
|
return err
|
|
}
|
|
|
|
// statementCreator allows to pass transaction or database to use in consumer.
|
|
type statementCreator interface {
|
|
Prepare(query string) (*sql.Stmt, error)
|
|
}
|
|
|
|
func deleteHeaders(creator statementCreator, headers []*DBHeader) error {
|
|
delete, err := creator.Prepare("DELETE FROM blocks WHERE blk_hash = ?")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
deleteTransfers, err := creator.Prepare("DELETE FROM transfers WHERE blk_hash = ?")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, h := range headers {
|
|
k := h.Hash
|
|
log.Debug("foo", "k", k)
|
|
_, err = delete.Exec(h.Hash)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = deleteTransfers.Exec(h.Hash)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func insertBlocksWithTransactions(creator statementCreator, account common.Address, network uint64, headers []*DBHeader) error {
|
|
insert, err := creator.Prepare("INSERT OR IGNORE INTO blocks(network_id, address, blk_number, blk_hash, loaded) VALUES (?, ?, ?, ?, ?)")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
updateTx, err := creator.Prepare(`UPDATE transfers
|
|
SET log = ?
|
|
WHERE network_id = ? AND address = ? AND hash = ?`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
insertTx, err := creator.Prepare(`INSERT OR IGNORE
|
|
INTO transfers (network_id, address, sender, hash, blk_number, blk_hash, type, timestamp, log, loaded)
|
|
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, 0)`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, header := range headers {
|
|
_, err = insert.Exec(network, account, (*SQLBigInt)(header.Number), header.Hash, header.Loaded)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if header.Erc20Transfer != nil {
|
|
res, err := updateTx.Exec(&JSONBlob{header.Erc20Transfer.Log}, network, account, header.Erc20Transfer.ID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
affected, err := res.RowsAffected()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if affected > 0 {
|
|
continue
|
|
}
|
|
|
|
_, err = insertTx.Exec(network, account, account, header.Erc20Transfer.ID, (*SQLBigInt)(header.Number), header.Hash, erc20Transfer, header.Erc20Transfer.Timestamp, &JSONBlob{header.Erc20Transfer.Log})
|
|
if err != nil {
|
|
log.Error("error saving erc20transfer", "err", err)
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func insertRange(creator statementCreator, account common.Address, network uint64, from *big.Int, to *big.Int) (err error) {
|
|
insert, err := creator.Prepare("INSERT INTO blocks_ranges (network_id, address, blk_from, blk_to) VALUES (?, ?, ?, ?)")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = insert.Exec(network, account, (*SQLBigInt)(from), (*SQLBigInt)(to))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func updateOrInsertTransfers(creator statementCreator, network uint64, transfers []Transfer) error {
|
|
update, err := creator.Prepare(`UPDATE transfers
|
|
SET tx = ?, sender = ?, receipt = ?, timestamp = ?, loaded = 1
|
|
WHERE address =? AND hash = ?`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
insert, err := creator.Prepare(`INSERT OR IGNORE INTO transfers
|
|
(network_id, hash, blk_hash, blk_number, timestamp, address, tx, sender, receipt, log, type, loaded)
|
|
VALUES
|
|
(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 1)`)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, t := range transfers {
|
|
res, err := update.Exec(&JSONBlob{t.Transaction}, t.From, &JSONBlob{t.Receipt}, t.Timestamp, t.Address, t.ID)
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
affected, err := res.RowsAffected()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if affected > 0 {
|
|
continue
|
|
}
|
|
|
|
_, err = insert.Exec(network, t.ID, t.BlockHash, (*SQLBigInt)(t.BlockNumber), t.Timestamp, t.Address, &JSONBlob{t.Transaction}, t.From, &JSONBlob{t.Receipt}, &JSONBlob{t.Log}, t.Type)
|
|
if err != nil {
|
|
log.Error("can't save transfer", "b-hash", t.BlockHash, "b-n", t.BlockNumber, "a", t.Address, "h", t.ID)
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
//markBlocksAsLoaded(tx, address, db.network, blocks)
|
|
func markBlocksAsLoaded(creator statementCreator, address common.Address, network uint64, blocks []*big.Int) error {
|
|
update, err := creator.Prepare("UPDATE blocks SET loaded=? WHERE address=? AND blk_number=? AND network_id=?")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, block := range blocks {
|
|
_, err := update.Exec(true, address, (*SQLBigInt)(block), network)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|