public static void ActionWithRetries(Action action,
ILogService logger,
int retryCount = 3,
int pauseMillesecond = 1000,
RetryModeType retryMode = RetryModeType.None,
bool throwException = false)
{
ActionWithRetries <bool>(() => { action(); return(true); }, logger, retryCount, pauseMillesecond, retryMode, throwException);
}
private static int UpdatePauseTime(int pauseTime, RetryModeType retryMode)
{
switch (retryMode)
{
case RetryModeType.Progressive:
pauseTime = (int)Math.Round(pauseTime * 1.3M);
if (pauseTime > 15000)
{
pauseTime = 15000;
}
break;
}
return(pauseTime);
}
public static CallResult <T> ActionWithRetriesWithCallResult <T>(Func <T> action,
ILogService logger,
int retryCount = 3,
int pauseMillesecond = 1000,
RetryModeType retryMode = RetryModeType.None)
{
if (retryMode == RetryModeType.Fast)
{
pauseMillesecond = 1000;
retryCount = 2;
}
var result = new RetriesResult <T>();
var random = new Random(DateTime.Now.Millisecond);
int pauseTime = pauseMillesecond;
int attemptNumber = 0;
bool isConversationOutOfSync = false;
bool stopRetrying = false;
//NOTE: Only conversation out of sync going repeats more 3 times
//TODO: go to refactor, move to settings
while (!stopRetrying &&
((isConversationOutOfSync && attemptNumber < retryCount) ||
(!isConversationOutOfSync && attemptNumber < retryCount)))
{
try
{
return(new CallResult <T>()
{
Data = action(),
Status = CallStatus.Success
});
}
catch (Exception ex)
{
if (ex is FaultException || ex is StampsException)
{
//System.ServiceModel.FaultException: Conversation out-of-sync.
//System.ServiceModel.FaultException: Invalid conversation token.
//System.ServiceModel.FaultException: Invalid SOAP message due to XML Schema validation failure...
isConversationOutOfSync = ExceptionHelper.IsStampsConversationSyncEx(ex);// ex.Message.Contains("out-of-sync") || ex.Message.Contains("conversation token");
stopRetrying = ex.Message.Contains("Invalid SOAP message due to XML Schema validation failure");
}
result.LastAttemptException = ex;
logger.Error("Retry attempt failed, attempt number=" + attemptNumber
+ ", pause time=" + pauseTime
+ ", isConversationOutOfSync=" + isConversationOutOfSync
+ ", stopRetrying=" + stopRetrying, ex);
if (retryMode == RetryModeType.Random)
{
Thread.Sleep(pauseTime
+ (random.Next(0, 3) - 1) /* [-1, 0, 1] */
* pauseTime / 2);
}
else
{
Thread.Sleep(pauseTime);
}
pauseTime = UpdatePauseTime(pauseTime, retryMode);
}
attemptNumber++;
}
//NOTE: gets here unless have passed all attempts
var exception = result.LastAttemptException ?? new Exception("All attempts fails");
return(new CallResult <T>
{
Data = default(T),
Exception = exception,
Message = exception.Message,
Status = CallStatus.Fail
});
}
