private void ExecuteAction(TryContext context)
{
// if action fails an exception is thrown
context.Action(context);
// so now action must habe been successful
context.Succeeded = true;
}
/// <summary>
/// executes the specified action and returns the corresponsing TryContext
/// also see the extensions method TryExtensions.Execute which returns the result of an action rather than a trycontext
/// </summary>
/// <param name="action"></param>
/// <returns></returns>
public TryContext Execute(Action <TryContext> action)
{
var tryContext = new TryContext()
{
Action = action,
FailedCount = 0,
Try = this,
};
// as long as action should repeat
while (RepeatStrategy.ComputeRepeat(tryContext))
{
try
{
ExecuteAction(tryContext);
// action was successfully executed
return(tryContext);
}
catch (Exception e)
{
//increase failedcount
tryContext.FailedCount++;
tryContext.AddException(e);
// try to handle exceptions
bool handled = false;
foreach (var handler in exceptionHandlers)
{
handled |= handler.HandleException(tryContext);
}
// if exception is unhandled stop retrying
if (!handled)
{
if (FailQueitly)
{
break;
}
//throw exception directly
throw e;
}
}
// do not wait if action should not be repeated anyways
if (!RepeatStrategy.ComputeRepeat(tryContext))
{
break;
}
// wait for a strategic amount of time before next retry
var wait = WaitingStrategy.ComputeDelay(tryContext);
Thread.Sleep(wait);
tryContext.WaitedTime += wait;
}
// throw exception if FailQuietly is false
if (!FailQueitly && !tryContext)
{
throw new AggregateException("failed to execute", tryContext.Exceptions);
}
return(tryContext);
}
