Method ApplyOperationsToModel

transaction_buffer.go:81–117

ApplyOperationsToModel applies all buffered operations to a model and returns the result. This simulates what the model would look like after all operations are applied. It's used for validation and preview purposes within the transaction.

(baseModel model.Model)

// This simulates what the model would look like after all operations are applied.
// It's used for validation and preview purposes within the transaction.
func (tb *TransactionBuffer) ApplyOperationsToModel(baseModel model.Model) (model.Model, error) {
	tb.mutex.RLock()
	defer tb.mutex.RUnlock()

	resultModel := baseModel.Copy()

	for _, op := range tb.operations {
		switch op.Type {
		case persist.OperationAdd:
			for _, rule := range op.Rules {
				if err := resultModel.AddPolicy(op.Section, op.PolicyType, rule); err != nil {
					return nil, err
				}
			}
		case persist.OperationRemove:
			for _, rule := range op.Rules {
				if _, err := resultModel.RemovePolicy(op.Section, op.PolicyType, rule); err != nil {
					return nil, err
				}
			}
		case persist.OperationUpdate:
			// For update operations, remove old rules and add new ones.
			for i, oldRule := range op.OldRules {
				if i < len(op.Rules) {
					if _, err := resultModel.RemovePolicy(op.Section, op.PolicyType, oldRule); err != nil {
						return nil, err
					}
					if err := resultModel.AddPolicy(op.Section, op.PolicyType, op.Rules[i]); err != nil {
						return nil, err
					}
				}
			}
		}
	}

	return resultModel, nil
}

// HasOperations returns true if there are any buffered operations.
func (tb *TransactionBuffer) HasOperations() bool {