112 lines
3.7 KiB
Go
112 lines
3.7 KiB
Go
package transfer
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import (
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"database/sql"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/log"
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"github.com/status-im/status-go/services/wallet/bigint"
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)
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type BlockRangeSequentialDAO struct {
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db *sql.DB
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}
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type BlockRange struct {
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Start *big.Int // Block of first transfer
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FirstKnown *big.Int // Oldest scanned block
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LastKnown *big.Int // Last scanned block
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}
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func NewBlockRange() *BlockRange {
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return &BlockRange{Start: &big.Int{}, FirstKnown: &big.Int{}, LastKnown: &big.Int{}}
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}
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func (b *BlockRangeSequentialDAO) getBlockRange(chainID uint64, address common.Address) (blockRange *BlockRange, err error) {
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query := `SELECT blk_start, blk_first, blk_last FROM blocks_ranges_sequential
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WHERE address = ?
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AND network_id = ?`
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rows, err := b.db.Query(query, address, chainID)
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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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blockRange = NewBlockRange()
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err = rows.Scan((*bigint.SQLBigInt)(blockRange.Start), (*bigint.SQLBigInt)(blockRange.FirstKnown), (*bigint.SQLBigInt)(blockRange.LastKnown))
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if err != nil {
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return nil, err
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}
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return blockRange, nil
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}
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return nil, nil
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}
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func (b *BlockRangeSequentialDAO) deleteRange(account common.Address) error {
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log.Debug("delete blocks range", "account", account)
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delete, err := b.db.Prepare(`DELETE FROM blocks_ranges_sequential WHERE address = ?`)
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if err != nil {
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log.Error("Failed to prepare deletion of sequential block range", "error", err)
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return err
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}
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_, err = delete.Exec(account)
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return err
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}
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func (b *BlockRangeSequentialDAO) upsertRange(chainID uint64, account common.Address,
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newBlockRange *BlockRange) (err error) {
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log.Debug("upsert blocks range", "account", account, "chainID", chainID,
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"start", newBlockRange.Start, "first", newBlockRange.FirstKnown, "last", newBlockRange.LastKnown)
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blockRange, err := b.getBlockRange(chainID, account)
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if err != nil {
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return err
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}
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// Update existing range
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if blockRange != nil {
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// Ovewrite start block if there was not any or if new one is older, because it can be precised only
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// to a greater value, because no history can be before some block that is considered
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// as a start of history, but due to concurrent block range checks, a newer greater block
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// can be found that matches criteria of a start block (nonce is zero, balances are equal)
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if newBlockRange.Start != nil && (blockRange.Start == nil || blockRange.Start.Cmp(newBlockRange.Start) < 0) {
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blockRange.Start = newBlockRange.Start
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}
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// Overwrite first known block if there was not any or if new one is older
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if (blockRange.FirstKnown == nil && newBlockRange.FirstKnown != nil) ||
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(blockRange.FirstKnown != nil && newBlockRange.FirstKnown != nil && blockRange.FirstKnown.Cmp(newBlockRange.FirstKnown) > 0) {
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blockRange.FirstKnown = newBlockRange.FirstKnown
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}
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// Overwrite last known block if there was not any or if new one is newer
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if (blockRange.LastKnown == nil && newBlockRange.LastKnown != nil) ||
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(blockRange.LastKnown != nil && newBlockRange.LastKnown != nil && blockRange.LastKnown.Cmp(newBlockRange.LastKnown) < 0) {
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blockRange.LastKnown = newBlockRange.LastKnown
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}
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log.Debug("update blocks range", "account", account, "chainID", chainID,
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"start", blockRange.Start, "first", blockRange.FirstKnown, "last", blockRange.LastKnown)
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} else {
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blockRange = newBlockRange
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}
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upsert, err := b.db.Prepare(`REPLACE INTO blocks_ranges_sequential
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(network_id, address, blk_start, blk_first, blk_last) VALUES (?, ?, ?, ?, ?)`)
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if err != nil {
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return err
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}
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_, err = upsert.Exec(chainID, account, (*bigint.SQLBigInt)(blockRange.Start), (*bigint.SQLBigInt)(blockRange.FirstKnown),
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(*bigint.SQLBigInt)(blockRange.LastKnown))
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return
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}
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