queue sync calls

task/list.go

@@ -56,6 +56,7 @@ func (list *List) consumer() {
 				list.Lock()
 				{
 					task.processReturnValue = retValue
+					task.err = err
 					if err != nil {
 						task.output.Printf("Task failed with error: %v", err)
 						task.State = FAILED
@@ -241,3 +242,14 @@ func (list *List) WaitForTaskByID(ID int) (Task, error) {
 	wgTask.Wait()
 	return list.GetTaskByID(ID)
 }
+
+// GetTaskError returns the Task error for a given id
+func (list *List) GetTaskErrorByID(ID int) (error, error) {
+	task, err := list.GetTaskByID(ID)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return task.err, nil
+}

task/task.go

@@ -47,6 +47,7 @@ type Task struct {
 	detail             *Detail
 	process            Process
 	processReturnValue *ProcessReturnValue
+	err                error
 	Name               string
 	ID                 int
 	State              State