/// <summary>
/// Execute scenario in other thread
/// </summary>
/// <param name="param"></param>
/// <param name="cancelToken"></param>
public virtual void ExecuteAsyncParallel(ScenarioActionSource source, string param, ExecutionContext parentContext)
{
CheckRights(source, parentContext);
TaskUtils.StartLongRunning(() =>
{
CheckValue(param, parentContext);
var output = new OutputChangedDelegates();
ExecutionContext context;
var oldVal = GetPreviousValue();
if (parentContext != null)
{
var cancellationTokenSource = new SafeCancellationToken();
parentContext.CancellationTokenSource.RegisterCallback(cancellationTokenSource.Cancel);
context = new ExecutionContext(this, param, oldVal, output, parentContext, cancellationTokenSource);
}
else
{
context = new ExecutionContext(this, param, oldVal, output, new SafeCancellationToken());
}
CheckContext(context);
HandleExecution(() => ExecuteInternal(context));
},
HandleSet);
}
protected ExecutionContext PrepareExecutionContext(string param, ExecutionContext parentContext)
{
var output = new OutputChangedDelegates();
output.Add(val => SetCurrentValue(val, SystemActionSource));
var tokenSource = PrepareCancellationTokenSource();
ExecutionContext context;
var prevValue = GetCurrentValue();
if (parentContext == null)
{
context = new ExecutionContext(this, param, prevValue, output, tokenSource);
}
else
{
context = new ExecutionContext(this, param, prevValue, output, parentContext, tokenSource);
parentContext.CancellationTokenSource.RegisterCallback(tokenSource.Cancel);
CheckContext(context);
}
return(context);
}
protected override void RunInternal()
{
if (GetScenario() == null)
{
return;
}
//удаляем старую подписку, если имеется
if (_lastSubscribe != null)
{
GetScenario().RemoveOnStateChanged(_lastSubscribe);
}
//выполнение по подписке на изменение значения
var executeBySubscription = true;
//если сценарий это одиночное действие и нельзя подписаться на изменение целевого действия
//то не выполняем по подписке, а выполняем просто через цикл
if (GetScenario() is SingleActionScenario singleActionScen && !singleActionScen.ActionHolder.Action.IsSupportsEvent)
{
executeBySubscription = false;
}
var contextCancellationToken = new SafeCancellationToken();
CancellationToken.RegisterCallback(contextCancellationToken.Cancel);
if (executeBySubscription)
{
_lastSubscribe = (sender, args) =>
{
if (CancellationToken.IsCancellationRequested)
{
//crutch; scenario can be changed before initializing, then we need to remove
//current subscribe from previous scenario. CancellationToken.IsCancellationRequested
//can be setted in true only when trigger stopped;
args.Value.Scenario.RemoveOnStateChanged(_lastSubscribe);
}
else
{
if (!args.Value.OnlyIntent)
{
var action = TargetAction;
var outputChanged = new OutputChangedDelegates();
outputChanged.Add((value) => GetScenario().SetCurrentValue(value, ExecuteActionSource));
contextCancellationToken.Cancel();
contextCancellationToken = new SafeCancellationToken();
var executionContext = new ExecutionContext(this, args.Value.Value, args.Value.PreviousValue, outputChanged, contextCancellationToken);
TaskUtils.StartLongRunning(
() => action.SetValue(executionContext, string.Empty),
(exception) => Log.ErrorFormat(exception, "Ошибка выполнения триггера [{0}][{1}]", Name, Id));
}
}
};
GetScenario().SetOnStateChanged(_lastSubscribe);
}
else
{
var lastVal = string.Empty;
var timerCancellationToken = SystemUtils.StartTimer(
(token) =>
{
try
{
var curVal = GetScenario().CalculateCurrentValue(ViewActionSource, null);
if (!lastVal.Equals(curVal))
{
var prevVal = GetScenario().GetPreviousValue();
lastVal = curVal;
contextCancellationToken.Cancel();
contextCancellationToken = new SafeCancellationToken();
var executionContext = new ExecutionContext(this, curVal, prevVal, new OutputChangedDelegates(), contextCancellationToken);
try
{
TargetAction.SetValue(executionContext, string.Empty);
}
catch (Exception exception)
{
Log.ErrorFormat(exception, "Ошибка выполнения триггера [{0}][{1}]", Name, Id);
}
}
}
catch (Exception e)
{
Log.ErrorFormat(e, "Ошибка выполнения триггера [{0}][{1}]", Name, Id);
}
},
() => TriggerChangesListenInterval,
true,
ticksSuperposition: true /*наложение тиков*/);
CancellationToken.RegisterCallback(timerCancellationToken.Cancel);
}
}
