session: initialize a empty price solver

c9s · Dec 14, 2024 · f86fc8c · f86fc8c
1 parent 30b275d
commit f86fc8c
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 0 deletions.
diff --git a/pkg/bbgo/session.go b/pkg/bbgo/session.go
@@ -192,6 +192,7 @@ func NewExchangeSession(name string, exchange types.Exchange) *ExchangeSession {
 		usedSymbols:           make(map[string]struct{}),
 		initializedSymbols:    make(map[string]struct{}),
 		logger:                log.WithField("session", name),
+		priceSolver:           pricesolver.NewSimplePriceResolver(nil),
 	}
 
 	session.OrderExecutor = &ExchangeOrderExecutor{

diff --git a/pkg/pricesolver/simple.go b/pkg/pricesolver/simple.go
@@ -30,6 +30,10 @@ type SimplePriceSolver struct {
 }
 
 func NewSimplePriceResolver(markets types.MarketMap) *SimplePriceSolver {
+	if markets == nil {
+		markets = make(types.MarketMap)
+	}
+
 	return &SimplePriceSolver{
 		markets:       markets,
 		symbolPrices:  make(map[string]fixedpoint.Value),