def retry(int maxRetries , long delayInMillis, Closure method) { validateInputs(maxRetries, delayInMillis) int retryCounter = 0 while (retryCounter <= maxRetries) { try { return method.call() } catch (Exception e) { log.trace("Received exception " + e.message + " during the retry util.") if (retryCounter < maxRetries) { retryCounter++ Thread.sleep(delayInMillis) log.trace("Attempting to retry function for. Retry attempt #$retryCounter.") } else { log.warn("Failed on final retry attempt #$retryCounter. Throwing exception.") throw new RetryFailedException(e) } } } }

The function retry takes in three parameters. The first parameter is the maximum number of times that the function will retry calling the method. The second parameter is the amount of time in milliseconds that the function will wait before calling the method again. The last parameter is the method that will be called. The function will also log any exception thrown. If the method throws an exception and there are more attempts left, the function will wait for the delay and call the method again. If there are not any more retries left, the function will throw a RetryFailedException.