feature/backoffice (#6)

Co-authored-by: matst80 <mats.tornberg@gmail.com>
Reviewed-on: https://git.tornberg.me/mats/go-cart-actor/pulls/6
Co-authored-by: Mats Törnberg <mats@tornberg.me>
Co-committed-by: Mats Törnberg <mats@tornberg.me>

cmd/cart/main.go

@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"git.tornberg.me/go-cart-actor/pkg/actor"
+	"git.tornberg.me/go-cart-actor/pkg/cart"
 	"git.tornberg.me/go-cart-actor/pkg/discovery"
 	messages "git.tornberg.me/go-cart-actor/pkg/messages"
 	"git.tornberg.me/go-cart-actor/pkg/proxy"
@@ -46,7 +47,7 @@ func init() {
 }
 
 type App struct {
-	pool *actor.SimpleGrainPool[CartGrain]
+	pool *actor.SimpleGrainPool[cart.CartGrain]
 }
 
 var podIp = os.Getenv("POD_IP")
@@ -98,63 +99,24 @@ type MutationContext struct {
 	VoucherService voucher.Service
 }
 
+type CartChangeEvent struct {
+	CartId    cart.CartId         `json:"cartId"`
+	Mutations []actor.ApplyResult `json:"mutations"`
+}
+
 func main() {
 
 	controlPlaneConfig := actor.DefaultServerConfig()
 
-	reg := actor.NewMutationRegistry()
-	reg.RegisterMutations(
-		actor.NewMutation(AddItem, func() *messages.AddItem {
-			return &messages.AddItem{}
-		}),
-		actor.NewMutation(ChangeQuantity, func() *messages.ChangeQuantity {
-			return &messages.ChangeQuantity{}
-		}),
-		actor.NewMutation(RemoveItem, func() *messages.RemoveItem {
-			return &messages.RemoveItem{}
-		}),
-		actor.NewMutation(InitializeCheckout, func() *messages.InitializeCheckout {
-			return &messages.InitializeCheckout{}
-		}),
-		actor.NewMutation(OrderCreated, func() *messages.OrderCreated {
-			return &messages.OrderCreated{}
-		}),
-		actor.NewMutation(RemoveDelivery, func() *messages.RemoveDelivery {
-			return &messages.RemoveDelivery{}
-		}),
-		actor.NewMutation(SetDelivery, func() *messages.SetDelivery {
-			return &messages.SetDelivery{}
-		}),
-		actor.NewMutation(SetPickupPoint, func() *messages.SetPickupPoint {
-			return &messages.SetPickupPoint{}
-		}),
-		actor.NewMutation(ClearCart, func() *messages.ClearCartRequest {
-			return &messages.ClearCartRequest{}
-		}),
-		actor.NewMutation(AddVoucher, func() *messages.AddVoucher {
-			return &messages.AddVoucher{}
-		}),
-		actor.NewMutation(RemoveVoucher, func() *messages.RemoveVoucher {
-			return &messages.RemoveVoucher{}
-		}),
-	)
-	diskStorage := actor.NewDiskStorage[CartGrain]("data", reg)
-	poolConfig := actor.GrainPoolConfig[CartGrain]{
+	reg := cart.NewCartMultationRegistry()
+	diskStorage := actor.NewDiskStorage[cart.CartGrain]("data", reg)
+	poolConfig := actor.GrainPoolConfig[cart.CartGrain]{
 		MutationRegistry: reg,
 		Storage:          diskStorage,
-		Spawn: func(id uint64) (actor.Grain[CartGrain], error) {
+		Spawn: func(id uint64) (actor.Grain[cart.CartGrain], error) {
 			grainSpawns.Inc()
-			ret := &CartGrain{
-				lastItemId:     0,
-				lastDeliveryId: 0,
-				Deliveries:     []*CartDelivery{},
-				Id:             CartId(id),
-				Items:          []*CartItem{},
-				TotalPrice:     NewPrice(),
-			}
+			ret := cart.NewCartGrain(id, time.Now())
 			// Set baseline lastChange at spawn; replay may update it to last event timestamp.
-			ret.lastChange = time.Now()
-			ret.lastAccess = time.Now()
 
 			err := diskStorage.LoadEvents(id, ret)
 
@@ -181,17 +143,22 @@ func main() {
 		fmt.Errorf("failed to connect to RabbitMQ: %w", err)
 	}
 
-	amqpListener := actor.NewAmqpListener(conn)
+	amqpListener := actor.NewAmqpListener(conn, func(id uint64, msg []actor.ApplyResult) (any, error) {
+		return &CartChangeEvent{
+			CartId:    cart.CartId(id),
+			Mutations: msg,
+		}, nil
+	})
 	amqpListener.DefineTopics()
 	pool.AddListener(amqpListener)
 
-	grpcSrv, err := actor.NewControlServer[*CartGrain](controlPlaneConfig, pool)
+	grpcSrv, err := actor.NewControlServer[*cart.CartGrain](controlPlaneConfig, pool)
 	if err != nil {
 		log.Fatalf("Error starting control plane gRPC server: %v\n", err)
 	}
 	defer grpcSrv.GracefulStop()
 
-	go diskStorage.SaveLoop(10 * time.Second)
+	// go diskStorage.SaveLoop(10 * time.Second)
 
 	go func(hw discovery.Discovery) {
 		if hw == nil {
@@ -282,14 +249,14 @@ func main() {
 				w.Write([]byte("no cart id to checkout is empty"))
 				return
 			}
-			parsed, ok := ParseCartId(cookie.Value)
+			parsed, ok := cart.ParseCartId(cookie.Value)
 			if !ok {
 				w.WriteHeader(http.StatusBadRequest)
 				w.Write([]byte("invalid cart id format"))
 				return
 			}
 			cartId := parsed
-			syncedServer.ProxyHandler(func(w http.ResponseWriter, r *http.Request, cartId CartId) error {
+			syncedServer.ProxyHandler(func(w http.ResponseWriter, r *http.Request, cartId cart.CartId) error {
 				order, err = syncedServer.CreateOrUpdateCheckout(r.Host, cartId)
 				if err != nil {
 					return err
@@ -443,7 +410,7 @@ func triggerOrderCompleted(syncedServer *PoolServer, order *CheckoutOrder) error
 		OrderId: order.ID,
 		Status:  order.Status,
 	}
-	cid, ok := ParseCartId(order.MerchantReference1)
+	cid, ok := cart.ParseCartId(order.MerchantReference1)
 	if !ok {
 		return fmt.Errorf("invalid cart id in order reference: %s", order.MerchantReference1)
 	}