Add full monorepo: virtual-banker, backend, frontend, docs, scripts, deployment

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-02-10 11:32:49 -08:00
parent aafcd913c2
commit 88bc76da91
815 changed files with 125522 additions and 264 deletions
--- a/backend/mempool/tracker.go
+++ b/backend/mempool/tracker.go
@@ -0,0 +1,94 @@
+package mempool
+
+import (
+	"context"
+	"database/sql"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// Tracker tracks pending transactions in the mempool
+type Tracker struct {
+	db      *pgxpool.Pool
+	client  *ethclient.Client
+	chainID int
+}
+
+// NewTracker creates a new mempool tracker
+func NewTracker(db *pgxpool.Pool, client *ethclient.Client, chainID int) *Tracker {
+	return &Tracker{
+		db:      db,
+		client:  client,
+		chainID: chainID,
+	}
+}
+
+// TrackPendingTransaction tracks a pending transaction
+func (t *Tracker) TrackPendingTransaction(ctx context.Context, tx *types.Transaction) error {
+	from, _ := types.Sender(types.LatestSignerForChainID(tx.ChainId()), tx)
+
+	var toAddress sql.NullString
+	if tx.To() != nil {
+		toAddress.String = tx.To().Hex()
+		toAddress.Valid = true
+	}
+
+	var maxFeePerGas, maxPriorityFeePerGas sql.NullInt64
+	if tx.Type() == types.DynamicFeeTxType {
+		if tx.GasFeeCap() != nil {
+			maxFeePerGas.Int64 = tx.GasFeeCap().Int64()
+			maxFeePerGas.Valid = true
+		}
+		if tx.GasTipCap() != nil {
+			maxPriorityFeePerGas.Int64 = tx.GasTipCap().Int64()
+			maxPriorityFeePerGas.Valid = true
+		}
+	}
+
+	query := `
+		INSERT INTO mempool_transactions (
+			time, chain_id, hash, from_address, to_address, value,
+			gas_price, max_fee_per_gas, max_priority_fee_per_gas,
+			gas_limit, nonce, input_data_length, first_seen, status
+		) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14)
+		ON CONFLICT (time, chain_id, hash) DO UPDATE SET
+			status = $14,
+			updated_at = NOW()
+	`
+
+	_, err := t.db.Exec(ctx, query,
+		time.Now(),
+		t.chainID,
+		tx.Hash().Hex(),
+		from.Hex(),
+		toAddress,
+		tx.Value().String(),
+		tx.GasPrice().Int64(),
+		maxFeePerGas,
+		maxPriorityFeePerGas,
+		tx.Gas(),
+		tx.Nonce(),
+		len(tx.Data()),
+		time.Now(),
+		"pending",
+	)
+
+	return err
+}
+
+// UpdateTransactionStatus updates transaction status when confirmed
+func (t *Tracker) UpdateTransactionStatus(ctx context.Context, txHash common.Hash, blockNumber int64, status string) error {
+	query := `
+		UPDATE mempool_transactions
+		SET status = $1, confirmed_block_number = $2, confirmed_at = NOW()
+		WHERE chain_id = $3 AND hash = $4
+	`
+
+	_, err := t.db.Exec(ctx, query, status, blockNumber, t.chainID, txHash.Hex())
+	return err
+}
+