// == METHOD(S)
// ======================================================================
/// <summary>
/// Method invoked when task starts the work.
/// </summary>
/// <returns>Object : Usually the return is NULL.</returns>
private Object taskExecution()
{
Object retValue = null;
try
{
if (this._state == ScheduledTaskState.ERROR)
{
this._newTentative = true;
}
else
{
this._newTentative = false;
}
this._state = ScheduledTaskState.RUNNING;
// == TASK LIFE-CYCLE EXECUTION
this._cancellationToken = new CancellationTokenSource();
onStart();
// PARAMETER TREATMENT
JObject param = null;
if (this.task.Param != null)
{
try
{
param = JObject.Parse(this.task.Param);
}
catch (System.Exception e)
{
throw new AuctionMasterTaskException(ExceptionType.FATAL, "Invalid param formatting - Expected: Valid JSON.");
}
}
onExecute(param, this._cancellationToken.Token);
onFinish();
this._state = ScheduledTaskState.IDLE;
}
catch (System.Exception e)
{
if (!(e is AuctionMasterTaskException))
{
e = new AuctionMasterTaskException(ExceptionType.FATAL, e.Message, e);
}
this._state = ScheduledTaskState.ERROR;
this.onError((AuctionMasterTaskException)e);
retValue = (AuctionMasterTaskException)e;
}
return(retValue);
}
/// <summary>
/// Event called when an exception is thrown inside the execution.
/// </summary>
/// <param name="e">Exception structure</param>
protected virtual void onError(AuctionMasterTaskException e)
{
// == WRITES LOG ABOUT THE ERROR AND UPDATE TASK DATA
this._taskLog.Status = 0;
this._taskLog.EndTime = DateTime.Now;
this._taskLog.Tentatives++;
this._taskLog.Message = this._message.ToString();
this._databaseContext.Entry(this._taskLog).State = EntityState.Modified;
this._databaseContext.SaveChanges();
this._scope.Dispose();
this._logService.writeLine(LogType.ERROR, $"Scheduled task [{this._scheduledTask.Name}] has finished with errors (Tentative {this._taskLog.Tentatives}). Details: {this._message.ToString()}", true);
this._logService.finish();
}
protected override void onError(AuctionMasterTaskException e)
{
this._message.Add("error", e.Message);
base.onError(e);
}
