Java 8 generic Retry if specific exception

I’m finding myself writing alot of retry loops that look like

    int triesRemaining = 3;

    while (triesRemaining > 0) {
        try {
            <MY FUNCTION CALL>
            LOGGER.info("success");
            break;
        } catch (Exception e) {
            if (e.getCause() instanceof SocketTimeoutException) {
                triesRemaining--;
                LOGGER.info(e.getMessage() + " trying again. Tries Remaining: " + triesRemaining);
            } else {
                LOGGER.error(e.getMessage(), e);
                return;
            }
        }
    }
    if (triesRemaining == 0) {
        LOGGER.error("Failed over too many times");
    }

I want to write a generic function that accepts a Lambda and only retries on a specific error (in the above case thats SocketTimeoutException). I’ve seen some functions that accept a Runnable which is fine, but they don’t seem to allow limiting to specific exceptions.

Any advice?

Answer

Have a look to org.springframework.retry

There is an annotation @Retryable which corresponding to your need. You can specify the type of exception to retry and configure the number of attempt, etc…