173.6.3. 在集群内保留单例路由

import static java.util.concurrent.TimeUnit.SECONDS;
import static org.apache.camel.component.jgroups.JGroupsExpressions.delayIfContextNotStarted;
import static org.apache.camel.component.jgroups.JGroupsFilters.dropNonCoordinatorViews;
...
from("jgroups:clusterName?enableViewMessages=true").
  filter(dropNonCoordinatorViews()).
  threads().delay(delayIfContextNotStarted(SECONDS.toMillis(5))). // run in separated and delayed thread. Delay only if the context hasn't been started already.
  to("controlbus:route?routeId=masterRoute&action=start&async=true");

from("jetty:http://localhost:8080/orders").routeId("masterRoute").autoStartup(false).to("jms:orders");