fix(projections): pass context to statement execution method (#10328)

## Which problems are solved

The execution of statements of projections did not have the context
present.

## How the problems were solved

Pass the context to the execute function

## Additional info

This change is required to use the repositories of the relational tables
in projections.

internal/execution/ctx.go

@@ -9,8 +9,8 @@ import (
 
 const ExecutionUserID = "EXECUTION"
 
-func HandlerContext(event *eventstore.Aggregate) context.Context {
-	ctx := authz.WithInstanceID(context.Background(), event.InstanceID)
+func HandlerContext(parent context.Context, event *eventstore.Aggregate) context.Context {
+	ctx := authz.WithInstanceID(parent, event.InstanceID)
 	return authz.SetCtxData(ctx, authz.CtxData{UserID: ExecutionUserID, OrgID: event.ResourceOwner})
 }
 

internal/execution/handlers.go

@@ -113,7 +113,7 @@ func idsForEventType(eventType string) []string {
 }
 
 func (u *eventHandler) reduce(e eventstore.Event) (*handler.Statement, error) {
-	ctx := HandlerContext(e.Aggregate())
+	ctx := HandlerContext(context.Background(), e.Aggregate())
 
 	targets, err := u.query.TargetsByExecutionID(ctx, idsForEventType(string(e.Type())))
 	if err != nil {
@@ -125,8 +125,8 @@ func (u *eventHandler) reduce(e eventstore.Event) (*handler.Statement, error) {
 		return handler.NewNoOpStatement(e), nil
 	}
 
-	return handler.NewStatement(e, func(ex handler.Executer, projectionName string) error {
-		ctx := HandlerContext(e.Aggregate())
+	return handler.NewStatement(e, func(ctx context.Context, ex handler.Executer, projectionName string) error {
+		ctx = HandlerContext(ctx, e.Aggregate())
 		req, err := NewRequest(e, targets)
 		if err != nil {
 			return err

internal/execution/handlers_test.go

@@ -440,7 +440,7 @@ func TestActionProjection_reduces(t *testing.T) {
 				assert.Nil(t, stmt.Execute)
 				return
 			}
-			err = stmt.Execute(nil, "")
+			err = stmt.Execute(t.Context(), nil, "")
 			if w.stmtErr != nil {
 				w.stmtErr(t, err)
 				return