public TaskManipulationResult TryRerunTask([NotNull] string taskId, TimeSpan delay)
{
if (string.IsNullOrWhiteSpace(taskId))
{
throw new InvalidOperationException("TaskId is required");
}
if (delay.Ticks < 0)
{
throw new InvalidOperationException(string.Format("Invalid delay: {0}", delay));
}
if (!RemoteLockCreator.TryGetLock(taskId, out var remoteLock))
{
return(TaskManipulationResult.Failure_LockAcquiringFails);
}
using (remoteLock)
{
var task = HandleTaskCollection.TryGetTask(taskId);
if (task == null)
{
return(TaskManipulationResult.Failure_TaskDoesNotExist);
}
var taskMeta = task.Meta;
var oldTaskIndexRecord = HandleTasksMetaStorage.FormatIndexRecord(taskMeta);
taskMeta.State = TaskState.WaitingForRerun;
taskMeta.MinimalStartTicks = (Timestamp.Now + delay).Ticks;
HandleTasksMetaStorage.AddMeta(taskMeta, oldTaskIndexRecord);
if (taskMeta.NeedTtlProlongation())
{
taskMeta.SetOrUpdateTtl(TaskTtl);
HandleTaskCollection.ProlongTaskTtl(taskMeta, task.Data);
}
return(TaskManipulationResult.Success);
}
}
public TaskManipulationResult TryCancelTask([NotNull] string taskId)
{
if (string.IsNullOrWhiteSpace(taskId))
{
throw new InvalidOperationException("TaskId is required");
}
if (!RemoteLockCreator.TryGetLock(taskId, out var remoteLock))
{
return(TaskManipulationResult.Failure_LockAcquiringFails);
}
using (remoteLock)
{
var task = HandleTaskCollection.TryGetTask(taskId);
if (task == null)
{
return(TaskManipulationResult.Failure_TaskDoesNotExist);
}
var taskMeta = task.Meta;
if (taskMeta.State == TaskState.New || taskMeta.State == TaskState.WaitingForRerun || taskMeta.State == TaskState.WaitingForRerunAfterError || taskMeta.State == TaskState.InProcess)
{
var oldTaskIndexRecord = HandleTasksMetaStorage.FormatIndexRecord(taskMeta);
taskMeta.State = TaskState.Canceled;
taskMeta.FinishExecutingTicks = Timestamp.Now.Ticks;
HandleTasksMetaStorage.AddMeta(taskMeta, oldTaskIndexRecord);
return(TaskManipulationResult.Success);
}
return(TaskManipulationResult.Failure_InvalidTaskState);
}
}