public void StartTask()
{
if (this.taskGuid == Guid.Empty) return;
TaskQueue task = new TaskQueue(this.taskGuid);
if (task.Guid == Guid.Empty) return; // task not found
if (!ThreadPool.QueueUserWorkItem(new WaitCallback(RunTaskOnNewThread), this))
{
throw new Exception("Couldn't queue the AppKeepAliveTask task on a new thread.");
}
task.Status = "Started";
task.StartUTC = DateTime.UtcNow;
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
log.Info("Queued AppKeepAliveTask on a new thread");
}
private void RunTask()
{
unfinshedTasks = TaskQueue.GetUnfinished();
tasksNotStarted = TaskQueue.GetTasksNotStarted();
while ((unfinshedTasks.Count > 0) || (tasksNotStarted.Count > 0))
{
ResumeOrKillStalledTasks();
StartNewTasks();
DoReporting();
DoSleeping();
unfinshedTasks = TaskQueue.GetUnfinished();
tasksNotStarted = TaskQueue.GetTasksNotStarted();
if ((tasksNotStarted.Count == 0) && (unfinshedTasks.Count == 1))
{
if(unfinshedTasks[0].SerializedTaskType == this.GetType().AssemblyQualifiedName)
break;
}
}
TaskQueue task = new TaskQueue(this.taskGuid);
task.Status = statusCompleteMessage;
task.CompleteRatio = 1;
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.CompleteUTC = DateTime.UtcNow;
task.Save();
}
private void ReportStatus()
{
TaskQueue task = new TaskQueue(this.taskGuid);
task.CompleteRatio = 1; //nothing to do so mark as complete
task.Status = statusCompleteMessage;
if (task.CompleteUTC == DateTime.MinValue)
task.CompleteUTC = DateTime.UtcNow;
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
}
private void GetParams(HttpContext context)
{
taskGuid = WebUtils.ParseGuidFromQueryString("t", taskGuid);
task = new TaskQueue(taskGuid);
if (task.Guid == Guid.Empty) { task = null; }
}
private void ReportStatus(double completeRatio)
{
TaskQueue task = new TaskQueue(this.taskGuid);
task.CompleteRatio = completeRatio;
if (task.CompleteRatio >= 1)
{
task.Status = statusCompleteMessage;
if (task.CompleteUTC == DateTime.MinValue)
{
task.CompleteUTC = DateTime.UtcNow;
}
}
else
{
task.Status = this.statusRunningMessage;
}
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
//nextStatusUpdateTime = DateTime.UtcNow.AddSeconds(updateFrequency);
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareBySerializedTaskType(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return(taskQueue1.SerializedTaskType.CompareTo(taskQueue2.SerializedTaskType));
}
private void RunTask()
{
startTime = DateTime.UtcNow;
endTime = startTime.AddMinutes(maxRunTimeMinutes);
timeToRun = endTime.Subtract(startTime);
while (DateTime.UtcNow < endTime)
{
countOfIterations += 1;
DoReporting();
DoSleeping();
}
TaskQueue task = new TaskQueue(this.taskGuid);
task.Status = "Finished";
task.CompleteRatio = 1;
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.CompleteUTC = DateTime.UtcNow;
task.Save();
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByTaskName(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return taskQueue1.TaskName.CompareTo(taskQueue2.TaskName);
}
public static bool IsStalled(TaskQueue task)
{
// TODO: make config setting
int taskTimeoutPaddingSeconds = 300; //5 minutes
return (DateTime.UtcNow > task.LastStatusUpdateUTC.AddSeconds(task.UpdateFrequency + taskTimeoutPaddingSeconds));
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByStartUTC(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return taskQueue1.StartUTC.CompareTo(taskQueue2.StartUTC);
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByStatus(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return taskQueue1.Status.CompareTo(taskQueue2.Status);
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareBySerializedTaskType(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return taskQueue1.SerializedTaskType.CompareTo(taskQueue2.SerializedTaskType);
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareBySerializedTaskObject(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return taskQueue1.SerializedTaskObject.CompareTo(taskQueue2.SerializedTaskObject);
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByQueuedUTC(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return taskQueue1.QueuedUTC.CompareTo(taskQueue2.QueuedUTC);
}
private void MarkAsComplete()
{
TaskQueue task = new TaskQueue(this.taskGuid);
task.Status = statusCompleteMessage;
task.CompleteRatio = 1;
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.CompleteUTC = DateTime.UtcNow;
task.Save();
}
private static List<TaskQueue> LoadListFromReader(IDataReader reader)
{
List<TaskQueue> taskQueueList = new List<TaskQueue>();
try
{
while (reader.Read())
{
TaskQueue taskQueue = new TaskQueue();
taskQueue.guid = new Guid(reader["Guid"].ToString());
taskQueue.siteGuid = new Guid(reader["SiteGuid"].ToString());
taskQueue.queuedBy = new Guid(reader["QueuedBy"].ToString());
taskQueue.taskName = reader["TaskName"].ToString();
taskQueue.notifyOnCompletion = Convert.ToBoolean(reader["NotifyOnCompletion"]);
taskQueue.notificationToEmail = reader["NotificationToEmail"].ToString();
taskQueue.notificationFromEmail = reader["NotificationFromEmail"].ToString();
taskQueue.notificationSubject = reader["NotificationSubject"].ToString();
taskQueue.taskCompleteMessage = reader["TaskCompleteMessage"].ToString();
if (reader["NotificationSentUTC"] != DBNull.Value)
taskQueue.notificationSentUTC = Convert.ToDateTime(reader["NotificationSentUTC"]);
taskQueue.canStop = Convert.ToBoolean(reader["CanStop"]);
taskQueue.canResume = Convert.ToBoolean(reader["CanResume"]);
taskQueue.updateFrequency = Convert.ToInt32(reader["UpdateFrequency"]);
taskQueue.queuedUTC = Convert.ToDateTime(reader["QueuedUTC"]);
if (reader["StartUTC"] != DBNull.Value)
taskQueue.startUTC = Convert.ToDateTime(reader["StartUTC"]);
if (reader["CompleteUTC"] != DBNull.Value)
taskQueue.completeUTC = Convert.ToDateTime(reader["CompleteUTC"]);
if (reader["LastStatusUpdateUTC"] != DBNull.Value)
taskQueue.lastStatusUpdateUTC = Convert.ToDateTime(reader["LastStatusUpdateUTC"]);
taskQueue.completeRatio = Convert.ToDouble(reader["CompleteRatio"]);
taskQueue.status = reader["Status"].ToString();
taskQueue.serializedTaskObject = reader["SerializedTaskObject"].ToString();
taskQueue.serializedTaskType = reader["SerializedTaskType"].ToString();
taskQueueList.Add(taskQueue);
}
}
finally
{
reader.Close();
}
return taskQueueList;
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByLastStatusUpdateUTC(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return taskQueue1.LastStatusUpdateUTC.CompareTo(taskQueue2.LastStatusUpdateUTC);
}
private void ReportStatus(bool markAsComplete)
{
TaskQueue task = new TaskQueue(this.taskGuid);
if (markAsComplete)
{
if (rowsToProcess > 0)
{
task.CompleteRatio = (rowsProcessed / rowsToProcess);
}
else
{
task.CompleteRatio = 1; //nothing to do so mark as complete
}
}
if (task.CompleteRatio >= 1)
{
task.Status = statusCompleteMessage;
if (task.CompleteUTC == DateTime.MinValue)
task.CompleteUTC = DateTime.UtcNow;
}
else
{
task.Status = string.Format(
CultureInfo.InvariantCulture,
statusRunningMessage,
rowsProcessed,
rowsToProcess);
}
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
nextStatusUpdateTime = DateTime.UtcNow.AddSeconds(actualUpdateFrequency);
}
private void DoReporting()
{
if (this.taskGuid == Guid.Empty) return;
TaskQueue task = new TaskQueue(this.taskGuid);
task.Status = "Running " + countOfIterations.ToString(CultureInfo.InvariantCulture);
if ((timeToRun != null)&&(timeToRun.TotalSeconds > 0))
{
TimeSpan timeLeft = endTime.Subtract(DateTime.UtcNow);
task.CompleteRatio = ((timeToRun.TotalSeconds - timeLeft.TotalSeconds)/timeToRun.TotalSeconds);
}
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
log.Info("Task " + task.TaskName
+ " completed iteration "
+ countOfIterations.ToString(CultureInfo.InvariantCulture));
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByTaskName(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return(taskQueue1.TaskName.CompareTo(taskQueue2.TaskName));
}
private void ReportSleeping()
{
TaskQueue task = new TaskQueue(this.taskGuid);
try
{
task.Status = string.Format(
CultureInfo.InvariantCulture,
Resource.NewsletterSleepingFormat,
subscribersSentSoFar,
totalSubscribersToSend);
}
catch (FormatException)
{
task.Status = "sleeping to throttle send rate";
}
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByQueuedUTC(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return(taskQueue1.QueuedUTC.CompareTo(taskQueue2.QueuedUTC));
}
private void ReportStatus()
{
TaskQueue task = new TaskQueue(this.taskGuid);
if (totalSubscribersToSend > 0)
{
task.CompleteRatio = (subscribersSentSoFar / totalSubscribersToSend);
}
else
{
task.CompleteRatio = 1; //nothing to send so mark as complete
}
if (task.CompleteRatio >= 1)
{
task.Status = statusCompleteMessage;
if(task.CompleteUTC == DateTime.MinValue)
task.CompleteUTC = DateTime.UtcNow;
Letter letter = new Letter(this.letterGuid);
letter.TrackSendComplete(LetterSendLog.GetCount(letter.LetterGuid));
}
else
{
task.Status = string.Format(
CultureInfo.InvariantCulture,
statusRunningMessage,
subscribersSentSoFar,
totalSubscribersToSend);
}
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
nextStatusUpdateTime = DateTime.UtcNow.AddSeconds(updateFrequency);
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByStartUTC(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return(taskQueue1.StartUTC.CompareTo(taskQueue2.StartUTC));
}
private void DoReporting()
{
if (this.taskGuid == Guid.Empty) return;
TaskQueue task = new TaskQueue(this.taskGuid);
task.Status = statusRunningMessage;
task.CompleteRatio = 0.5;
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByCompleteUTC(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return(taskQueue1.CompleteUTC.CompareTo(taskQueue2.CompleteUTC));
}
public void QueueTask()
{
if (this.siteGuid == Guid.Empty) return;
// don't queue a task that has already been created
if (this.taskGuid != Guid.Empty) return;
TaskQueue task = new TaskQueue();
task.SiteGuid = this.siteGuid;
task.QueuedBy = this.queuedBy;
task.TaskName = this.taskName;
task.NotifyOnCompletion = this.notifyOnCompletion;
task.NotificationToEmail = this.notificationToEmail;
task.NotificationFromEmail = this.notificationFromEmail;
task.NotificationSubject = this.notificationSubject;
task.TaskCompleteMessage = this.taskCompleteMessage;
task.CanResume = this.canResume;
task.CanStop = this.canStop;
task.UpdateFrequency = this.updateFrequency;
task.Status = statusQueuedMessage;
task.LastStatusUpdateUTC = DateTime.UtcNow;
this.taskGuid = task.NewGuid;
task.SerializedTaskObject = SerializationHelper.SerializeToString(this);
task.SerializedTaskType = this.GetType().AssemblyQualifiedName;
task.Save();
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByLastStatusUpdateUTC(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return(taskQueue1.LastStatusUpdateUTC.CompareTo(taskQueue2.LastStatusUpdateUTC));
}
public void QueueTask()
{
//if (this.siteGuid == Guid.Empty) return;
if (this.taskGuid != Guid.Empty) return;
if (this.urlToRequest.Length == 0) return;
TaskQueue task = new TaskQueue();
task.SiteGuid = this.siteGuid;
task.TaskName = this.taskName;
task.Status = "Queued";
task.LastStatusUpdateUTC = DateTime.UtcNow;
this.taskGuid = task.NewGuid;
task.SerializedTaskObject = SerializationHelper.SerializeToString(this);
task.SerializedTaskType = this.GetType().AssemblyQualifiedName;
task.Save();
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByStatus(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return(taskQueue1.Status.CompareTo(taskQueue2.Status));
}
private void DoKeepAlive()
{
if (this.taskGuid == Guid.Empty) return;
TaskQueue task = new TaskQueue(this.taskGuid);
task.Status = "Running";
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.Save();
if (urlToRequest.Length == 0)
{
log.Info("No url provided for app keep alive task so task is quiting");
//make the task end
endTime = DateTime.UtcNow;
return;
}
//make web request to keep the app alive
try
{
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(urlToRequest);
webRequest.Method = "GET";
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
}
catch (UriFormatException ex)
{
webErrorCount = maxAllowedWebErrors; // this particular error means the ulr is bad so no need to try again
log.Error(ex);
}
catch (NotSupportedException ex)
{
webErrorCount = maxAllowedWebErrors; // no need to try again
log.Error(ex);
}
catch (System.Security.SecurityException ex)
{
webErrorCount = maxAllowedWebErrors; // no need to try again
log.Error(ex);
}
catch (WebException ex)
{
webErrorCount += 1;
log.Error(ex);
}
catch (InvalidOperationException ex)
{
webErrorCount = maxAllowedWebErrors; // no need to try again
log.Error(ex);
}
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareBySerializedTaskObject(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return(taskQueue1.SerializedTaskObject.CompareTo(taskQueue2.SerializedTaskObject));
}
private void RunTask()
{
if (IsAlreadyRunning())
{
MarkAsComplete();
return;
}
startTime = DateTime.UtcNow;
endTime = startTime.AddMinutes(maxRunTimeMinutes);
timeToRun = endTime.Subtract(startTime);
while ((DateTime.UtcNow < endTime)&&(webErrorCount < maxAllowedWebErrors))
{
countOfIterations += 1;
DoKeepAlive();
DoSleeping();
}
TaskQueue task = new TaskQueue(this.taskGuid);
task.Status = "Finished";
task.CompleteRatio = 1;
task.LastStatusUpdateUTC = DateTime.UtcNow;
task.CompleteUTC = DateTime.UtcNow;
task.Save();
}
/// <summary>
/// Compares 2 instances of TaskQueue.
/// </summary>
public static int CompareByCompleteUTC(TaskQueue taskQueue1, TaskQueue taskQueue2)
{
return taskQueue1.CompleteUTC.CompareTo(taskQueue2.CompleteUTC);
}
