public TItem Retry <TItem>(Func <TItem> action, RetryPolicy retryPolicy = RetryPolicy.ThrowException, int numberOfRetries = 3)
{
Guard.ThrowIfNull("action", action);
Guard.EnsureIsValid("retryPolicy", r => r > 0, retryPolicy);
Guard.EnsureIsValid("numberOfRetries", i => i > 0, numberOfRetries);
var numberOfExecutions = 0;
Exception caughtException = null;
var value = default(TItem);
while (numberOfExecutions < numberOfRetries)
{
try
{
value = action();
}
catch (Exception exception)
{
if (numberOfExecutions != (numberOfRetries - 1))
{
continue;
}
if (retryPolicy == RetryPolicy.ThrowException)
{
throw;
}
caughtException = exception;
}
finally
{
numberOfExecutions++;
}
}
if (caughtException.IsNull() || retryPolicy == RetryPolicy.SwallowAllExceptions)
{
return(value);
}
if (ExceptionOccurred.IsNotNull())
{
ExceptionOccurred(this, new ExceptionEventArgs(caughtException));
}
return(value);
}