Conflict with Spring cloud SpringApplication run

Comienza con FluentLoggerFactory alrededor de la línea 58 e inspecciona cómo interactúa el ciclo de vida del sender de FluentLogger con SpringApplication y BootstrapApplicationListener. Reproduce la NullPointerException en log(String tag, Map<String,Object> data, long timestamp) y después añade cobertura para el caso de un sender nulo; estará terminado cuando los inicios repetidos de la aplicación ya no causen el fallo.

Conflict with Spring cloud SpringApplication run. spring cloud because BootstrapApplicationListener.Causes Spring Application to execute many times.
and call FluentLogger stop. close sender, with sender is null.
then call log(String tag, Map<String, Object> data, long timestamp) function Throw out NullPointerException？
in FluentLoggerFactory 58 line add this code?

public synchronized FluentLogger getLogger(String tagPrefix, String host, int port, int timeout, int bufferCapacity,
            Reconnector reconnector) {
        String key = String.format("%s_%s_%d_%d_%d", new Object[] { tagPrefix, host, port, timeout, bufferCapacity });

        for (Map.Entry<FluentLogger, String> entry : loggers.entrySet()) {
            if (entry.getValue().equals(key)) {
                FluentLogger found = entry.getKey();
                if(found != null) {
                    if(found.getSender() == null){
                        found.setSender(getNewSender(host, port, timeout, bufferCapacity, reconnector));
                    }
                    return found;
                }
                break;
            }
        }


        FluentLogger logger = new FluentLogger(tagPrefix, getNewSender(host, port, timeout, bufferCapacity, reconnector));
        loggers.put(logger, key);
        return logger;
    }

private Sender getNewSender( String host, int port, int timeout, int bufferCapacity, Reconnector reconnector){
        Sender sender = null;
        Properties props = System.getProperties();
        if (!props.containsKey(Config.FLUENT_SENDER_CLASS)) {
            // create default sender object
            sender = new RawSocketSender(host, port, timeout, bufferCapacity, reconnector);
        } else {
            String senderClassName = props.getProperty(Config.FLUENT_SENDER_CLASS);
            try {
                sender = createSenderInstance(senderClassName, new Object[] { host, port, timeout, bufferCapacity });
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        return sender;
    }