java - Design pattern for "retrying" logic that failed?

Question

I'm writing some reconnect logic to periodically attempt to establish a connection to a remote endpoint which went down. Essentially, the code looks like this:

public void establishConnection() {
    try {
        this.connection = newConnection();
    } catch (IOException e) {
        // connection failed, try again.
        try { Thread.sleep(1000); } catch (InterruptedException e) {};

        establishConnection();
    }
}

I've solved this general problem with code similar to the above on many occasions, but I feel largely unsatisfied with the result. Is there a design pattern designed for dealing with this issue?

Answer 1

Shameless plug: I have implemented some classes to allow retrying operations. The library is not made available yet, but you may fork it on github. And a fork exists.

It allows building a Retryer with various flexible strategies. For example:

Retryer retryer = 
    RetryerBuilder.newBuilder()
                  .withWaitStrategy(WaitStrategies.fixedWait(1, TimeUnit.SECOND))
                  .withStopStrategy(StopStrategies.stopAfterAttempt(3))
                  .retryIfExceptionOfType(IOException.class)
                  .build();

And you can then execute a callable (or several ones) with the Retryer:

retryer.call(new Callable<Void>() {
    public Void call() throws IOException {
        connection = newConnection();
        return null;
    }
}