more

pkg/actor/mutation_registry.go

@@ -9,8 +9,14 @@ import (
 	"github.com/gogo/protobuf/proto"
 )
 
+type ApplyResult struct {
+	Type     string        `json:"type"`
+	Mutation proto.Message `json:"mutation"`
+	Error    error         `json:"error,omitempty"`
+}
+
 type MutationRegistry interface {
-	Apply(grain any, msg ...proto.Message) error
+	Apply(grain any, msg ...proto.Message) ([]ApplyResult, error)
 	RegisterMutations(handlers ...MutationHandler)
 	Create(typeName string) (proto.Message, bool)
 	GetTypeName(msg proto.Message) (string, bool)
@@ -145,12 +151,14 @@ func (r *ProtoMutationRegistry) Create(typeName string) (proto.Message, bool) {
 // Returns updated grain if successful.
 //
 // If the mutation is not registered, returns (nil, ErrMutationNotRegistered).
-func (r *ProtoMutationRegistry) Apply(grain any, msg ...proto.Message) error {
+func (r *ProtoMutationRegistry) Apply(grain any, msg ...proto.Message) ([]ApplyResult, error) {
+	results := make([]ApplyResult, 0, len(msg))
+
 	if grain == nil {
-		return fmt.Errorf("nil grain")
+		return results, fmt.Errorf("nil grain")
 	}
 	if msg == nil {
-		return fmt.Errorf("nil mutation message")
+		return results, fmt.Errorf("nil mutation message")
 	}
 
 	for _, m := range msg {
@@ -159,18 +167,18 @@ func (r *ProtoMutationRegistry) Apply(grain any, msg ...proto.Message) error {
 		entry, ok := r.mutationRegistry[rt]
 		r.mutationRegistryMu.RUnlock()
 		if !ok {
-			return ErrMutationNotRegistered
-		}
-		if err := entry.Handle(grain, m); err != nil {
-			return err
+			results = append(results, ApplyResult{Error: ErrMutationNotRegistered, Type: rt.Name(), Mutation: m})
+			continue
 		}
+		err := entry.Handle(grain, m)
+		results = append(results, ApplyResult{Error: err, Type: rt.Name(), Mutation: m})
 	}
 
 	// if entry.updateTotals {
 	// 	grain.UpdateTotals()
 	// }
 
-	return nil
+	return results, nil
 }
 
 // RegisteredMutations returns metadata for all registered mutations (snapshot).