Page History

...

Available as of Camel 2.0
The failover load balancer is capable of trying the next processor in case an Exchange failed with an exception during processing.
You can configure the failover with a list of specific exception to only failover. If you do not specify any exceptions it will failover over any exceptions. It uses the same strategy for matching exceptions as the Exception Clause does for the onException.

Here is a sample to failover only if a IOException related exception was thrown:

...

You can specify multiple exceptions to failover as the option is varargs, for instance:

// enable redelivery so failover can react
errorHandler(defaultErrorHandler().maximumRedeliveries(5));

from("direct:foo").
    loadBalance().failover(IOException.class, MyOtherException.class)
        .to("direct:a", "direct:b");

...

Failover can also be used from Spring DSL and you configure it as:

   <route errorHandlerRef="myErrorHandler">
      <from uri="direct:foo"/>
      <loadBalance>
          <failover>
              <exception>java.io.IOException</exception>
              <exception>com.mycompany.MyOtherException</exception>
          </failover>
          <to uri="direct:a"/>
          <to uri="direct:b"/>
      </loadBalance>
    </route>