102 lines
2.2 KiB
Go
102 lines
2.2 KiB
Go
package service
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/jmoiron/sqlx"
|
|
"github.com/pkg/errors"
|
|
|
|
"git.qtrade.icu/lychiyu/bbgo/pkg/fixedpoint"
|
|
"git.qtrade.icu/lychiyu/bbgo/pkg/types"
|
|
)
|
|
|
|
type PositionService struct {
|
|
DB *sqlx.DB
|
|
}
|
|
|
|
func NewPositionService(db *sqlx.DB) *PositionService {
|
|
return &PositionService{db}
|
|
}
|
|
|
|
func (s *PositionService) Load(ctx context.Context, id int64) (*types.Position, error) {
|
|
var pos types.Position
|
|
|
|
rows, err := s.DB.NamedQuery("SELECT * FROM positions WHERE id = :id", map[string]interface{}{
|
|
"id": id,
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
defer rows.Close()
|
|
|
|
if rows.Next() {
|
|
err = rows.StructScan(&pos)
|
|
return &pos, err
|
|
}
|
|
|
|
return nil, errors.Wrapf(ErrTradeNotFound, "position id:%d not found", id)
|
|
}
|
|
|
|
func (s *PositionService) scanRows(rows *sqlx.Rows) (positions []types.Position, err error) {
|
|
for rows.Next() {
|
|
var p types.Position
|
|
if err := rows.StructScan(&p); err != nil {
|
|
return positions, err
|
|
}
|
|
|
|
positions = append(positions, p)
|
|
}
|
|
|
|
return positions, rows.Err()
|
|
}
|
|
|
|
func (s *PositionService) Insert(position *types.Position, trade types.Trade, profit fixedpoint.Value) error {
|
|
_, err := s.DB.NamedExec(`
|
|
INSERT INTO positions (
|
|
strategy,
|
|
strategy_instance_id,
|
|
symbol,
|
|
quote_currency,
|
|
base_currency,
|
|
average_cost,
|
|
base,
|
|
quote,
|
|
profit,
|
|
trade_id,
|
|
exchange,
|
|
side,
|
|
traded_at
|
|
) VALUES (
|
|
:strategy,
|
|
:strategy_instance_id,
|
|
:symbol,
|
|
:quote_currency,
|
|
:base_currency,
|
|
:average_cost,
|
|
:base,
|
|
:quote,
|
|
:profit,
|
|
:trade_id,
|
|
:exchange,
|
|
:side,
|
|
:traded_at
|
|
)`,
|
|
map[string]interface{}{
|
|
"strategy": position.Strategy,
|
|
"strategy_instance_id": position.StrategyInstanceID,
|
|
"symbol": position.Symbol,
|
|
"quote_currency": position.QuoteCurrency,
|
|
"base_currency": position.BaseCurrency,
|
|
"average_cost": position.AverageCost,
|
|
"base": position.Base,
|
|
"quote": position.Quote,
|
|
"profit": profit,
|
|
"trade_id": trade.ID,
|
|
"exchange": trade.Exchange,
|
|
"side": trade.Side,
|
|
"traded_at": trade.Time,
|
|
})
|
|
return err
|
|
}
|