check if target account id is same as the actor account id

Tochemey · Dec 17, 2024 · 83cc317 · 83cc317
1 parent 51fe420
commit 83cc317
Showing 1 changed file with 121 additions and 118 deletions.
diff --git a/example/statestore/main.go b/example/statestore/main.go
@@ -22,121 +22,124 @@
  * SOFTWARE.
  */
 
- package main
-
- import (
-	 "context"
-	 "errors"
-	 "log"
-	 "os"
-	 "os/signal"
-	 "syscall"
-	 "time"
-
-	 "github.com/google/uuid"
-	 "google.golang.org/protobuf/proto"
-
-	 "github.com/tochemey/ego/v3"
-	 samplepb "github.com/tochemey/ego/v3/example/pbs/sample/pb/v1"
-	 "github.com/tochemey/ego/v3/plugins/statestore/memory"
- )
-
- func main() {
-	 // create the go context
-	 ctx := context.Background()
-	 // create the event store
-	 durableStore := memory.NewStateStore()
-	 // connect the event store
-	 _ = durableStore.Connect(ctx)
-	 // create the ego engine
-	 engine := ego.NewEngine("Sample", nil, ego.WithStateStore(durableStore))
-	 // start ego engine
-	 _ = engine.Start(ctx)
-	 // create a persistence id
-	 entityID := uuid.NewString()
-	 // create an entity behavior with a given id
-	 behavior := NewAccountBehavior(entityID)
-	 // create an entity
-	 _ = engine.DurableStateEntity(ctx, behavior)
-
-	 // send some commands to the pid
-	 var command proto.Message
-	 // create an account
-	 command = &samplepb.CreateAccount{
-		 AccountId:      entityID,
-		 AccountBalance: 500.00,
-	 }
-	 // send the command to the actor. Please don't ignore the error in production grid code
-	 reply, _, _ := engine.SendCommand(ctx, entityID, command, time.Minute)
-	 account := reply.(*samplepb.Account)
-	 log.Printf("current balance on opening: %v", account.GetAccountBalance())
-
-	 // send another command to credit the balance
-	 command = &samplepb.CreditAccount{
-		 AccountId: entityID,
-		 Balance:   250,
-	 }
-
-	 reply, _, _ = engine.SendCommand(ctx, entityID, command, time.Minute)
-	 account = reply.(*samplepb.Account)
-	 log.Printf("current balance after a credit of 250: %v", account.GetAccountBalance())
-
-	 // capture ctrl+c
-	 interruptSignal := make(chan os.Signal, 1)
-	 signal.Notify(interruptSignal, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
-	 <-interruptSignal
-
-	 // disconnect the event store
-	 _ = durableStore.Disconnect(ctx)
-	 // stop the actor system
-	 _ = engine.Stop(ctx)
-	 os.Exit(0)
- }
-
- // AccountBehavior implements EventSourcedBehavior
- type AccountBehavior struct {
-	 id string
- }
-
- // make sure that AccountBehavior is a true persistence behavior
- var _ ego.DurableStateBehavior = &AccountBehavior{}
-
- // NewAccountBehavior creates an instance of AccountBehavior
- func NewAccountBehavior(id string) *AccountBehavior {
-	 return &AccountBehavior{id: id}
- }
-
- // ID returns the id
- func (a *AccountBehavior) ID() string {
-	 return a.id
- }
-
- // InitialState returns the initial state
- func (a *AccountBehavior) InitialState() ego.State {
-	 return ego.State(new(samplepb.Account))
- }
-
- // HandleCommand handles every command that is sent to the persistent behavior
- func (a *AccountBehavior) HandleCommand(_ context.Context, command ego.Command, priorVersion uint64, priorState ego.State) (event ego.State, newVersion uint64, err error) {
-	 switch cmd := command.(type) {
-	 case *samplepb.CreateAccount:
-		 // TODO in production grid app validate the command using the prior state
-		 return &samplepb.Account{
-				 AccountId:      a.id,
-				 AccountBalance: cmd.GetAccountBalance(),
-			 }, priorVersion + 1, nil
-
-	 case *samplepb.CreditAccount:
-		 // TODO in production grid app validate the command using the prior state
-		 account := priorState.(*samplepb.Account)
-		 bal := account.GetAccountBalance() + cmd.GetBalance()
-
-		 return &samplepb.Account{
-				 AccountId:      a.id,
-				 AccountBalance: bal,
-			 }, priorVersion + 1, nil
-
-	 default:
-		 return nil, 1, errors.New("unhandled command")
-	 }
- }
+package main
+
+import (
+	"context"
+	"errors"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/google/uuid"
+	"google.golang.org/protobuf/proto"
+
+	"github.com/tochemey/ego/v3"
+	samplepb "github.com/tochemey/ego/v3/example/pbs/sample/pb/v1"
+	"github.com/tochemey/ego/v3/plugins/statestore/memory"
+)
+
+func main() {
+	// create the go context
+	ctx := context.Background()
+	// create the event store
+	durableStore := memory.NewStateStore()
+	// connect the event store
+	_ = durableStore.Connect(ctx)
+	// create the ego engine
+	engine := ego.NewEngine("Sample", nil, ego.WithStateStore(durableStore))
+	// start ego engine
+	_ = engine.Start(ctx)
+	// create a persistence id
+	entityID := uuid.NewString()
+	// create an entity behavior with a given id
+	behavior := NewAccountBehavior(entityID)
+	// create an entity
+	_ = engine.DurableStateEntity(ctx, behavior)
+
+	// send some commands to the pid
+	var command proto.Message
+	// create an account
+	command = &samplepb.CreateAccount{
+		AccountId:      entityID,
+		AccountBalance: 500.00,
+	}
+	// send the command to the actor. Please don't ignore the error in production grid code
+	reply, _, _ := engine.SendCommand(ctx, entityID, command, time.Minute)
+	account := reply.(*samplepb.Account)
+	log.Printf("current balance on opening: %v", account.GetAccountBalance())
+
+	// send another command to credit the balance
+	command = &samplepb.CreditAccount{
+		AccountId: entityID,
+		Balance:   250,
+	}
+
+	reply, _, _ = engine.SendCommand(ctx, entityID, command, time.Minute)
+	account = reply.(*samplepb.Account)
+	log.Printf("current balance after a credit of 250: %v", account.GetAccountBalance())
+
+	// capture ctrl+c
+	interruptSignal := make(chan os.Signal, 1)
+	signal.Notify(interruptSignal, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
+	<-interruptSignal
+
+	// disconnect the event store
+	_ = durableStore.Disconnect(ctx)
+	// stop the actor system
+	_ = engine.Stop(ctx)
+	os.Exit(0)
+}
+
+// AccountBehavior implements EventSourcedBehavior
+type AccountBehavior struct {
+	id string
+}
+
+// make sure that AccountBehavior is a true persistence behavior
+var _ ego.DurableStateBehavior = &AccountBehavior{}
+
+// NewAccountBehavior creates an instance of AccountBehavior
+func NewAccountBehavior(id string) *AccountBehavior {
+	return &AccountBehavior{id: id}
+}
+
+// ID returns the id
+func (a *AccountBehavior) ID() string {
+	return a.id
+}
+
+// InitialState returns the initial state
+func (a *AccountBehavior) InitialState() ego.State {
+	return ego.State(new(samplepb.Account))
+}
+
+// HandleCommand handles every command that is sent to the persistent behavior
+func (a *AccountBehavior) HandleCommand(_ context.Context, command ego.Command, priorVersion uint64, priorState ego.State) (event ego.State, newVersion uint64, err error) {
+	switch cmd := command.(type) {
+	case *samplepb.CreateAccount:
+		// TODO in production grid app validate the command using the prior state
+		return &samplepb.Account{
+			AccountId:      a.id,
+			AccountBalance: cmd.GetAccountBalance(),
+		}, priorVersion + 1, nil
+
+	case *samplepb.CreditAccount:
+		if cmd.GetAccountId() == a.id {
+			// TODO in production grid app validate the command using the prior state
+			account := priorState.(*samplepb.Account)
+			bal := account.GetAccountBalance() + cmd.GetBalance()
+
+			return &samplepb.Account{
+				AccountId:      a.id,
+				AccountBalance: bal,
+			}, priorVersion + 1, nil
+		}
+		return nil, 0, errors.New("command sent to the wrong entity")
+
+	default:
+		return nil, 0, errors.New("unhandled command")
+	}
+}