如何在自定义负载均衡器中添加故障转移？

Question

范围100到299的HTTP响应代码在Camel中被视为成功响应。我的要求是，如果响应代码不是200，那么将其视为失败响应。我试图使用自定义负载均衡器来实现这一目标。问题是当处理交换时，如果响应代码是299，那么对于Camel来说，它是成功的并且它离开了customLoadBalancer。我需要一种方法来添加自定义故障转移，我可以在其中检查响应头值并基于该路由到不同的端点。

<route id="client_http" errorHandlerRef="noErrorHandler">
        <from uri="direct:test"/>
        <loadBalance inheritErrorHandler="false">
        <custom ref="customLoadBalancer" />
            <!-- TODO configurable failover attempts -->
            <to ref="http4.1.to"/>
            <to ref="http4.2.to"/>
            <to ref="http4.3.to"/>
        </loadBalance>
    </route>

@Component
public class CustomLoadBalancer extends LoadBalancerSupport {

  public boolean process(Exchange exchange, AsyncCallback callback) {
    Logger log = Logger.getLogger(CustomLoadBalancer.class);
    String body = exchange.getIn().getBody(String.class);
    log.debug("Headers " + exchange.getIn().getHeaders()); //null because exchange is not processed
    getProcessors().get(0).process(exchange);
    log.debug("Headers " + exchange.getIn().getHeaders()); //line never executes because HTTP response was 299 and Camel considered that as success.
}