pekko/akka-docs/rst/java/code/docs/camel/ErrorThrowingConsumer.java
Patrik Nordwall 4bd6b7aab1 improve AbstractActor, #21717
* Receive class that wraps PartialFunction, to avoid
  scary scala types
* move AbstractActorContext to AbstractActor.ActorContext
* converting docs, many, many UntypedActor
* removing UntypedActor docs
* add unit test for ReceiveBuilder
* MiMa filters
* consistent use of getContext(), self(), sender()
* rename cross references
* migration guide
* skip samples for now
* improve match type safetyi, add matchUnchecked
  * the `? extends P` caused code like this to compile:
    `match(String.class, (Integer i) -> {})`
  * added matchUnchecked, since it can still be useful (um, convenient)
    to be able to do:
    `matchUnchecked(List.class, (List<String> list) -> {})`
* eleminate some scala.Option
  * preRestart
  * findChild
  * ActorIdentity.getActorRef
2017-01-23 18:30:52 +01:00

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Java

package docs.camel;
//#ErrorThrowingConsumer
import akka.actor.Status;
import akka.camel.CamelMessage;
import akka.camel.javaapi.UntypedConsumerActor;
import akka.dispatch.Mapper;
import org.apache.camel.builder.Builder;
import org.apache.camel.model.ProcessorDefinition;
import org.apache.camel.model.RouteDefinition;
import scala.Option;
public class ErrorThrowingConsumer extends UntypedConsumerActor{
private String uri;
private static Mapper<RouteDefinition, ProcessorDefinition<?>> mapper =
new Mapper<RouteDefinition, ProcessorDefinition<?>>() {
public ProcessorDefinition<?> apply(RouteDefinition rd) {
// Catch any exception and handle it by returning the exception message
// as response
return rd.onException(Exception.class).handled(true).
transform(Builder.exceptionMessage()).end();
}
};
public ErrorThrowingConsumer(String uri){
this.uri = uri;
}
public String getEndpointUri() {
return uri;
}
public void onReceive(Object message) throws Exception{
if (message instanceof CamelMessage) {
CamelMessage camelMessage = (CamelMessage) message;
String body = camelMessage.getBodyAs(String.class, getCamelContext());
throw new Exception(String.format("error: %s",body));
} else
unhandled(message);
}
@Override
public Mapper<RouteDefinition,
ProcessorDefinition<?>> getRouteDefinitionHandler() {
return mapper;
}
@Override
public void preRestart(Throwable reason, Option<Object> message) {
sender().tell(new Status.Failure(reason), self());
}
}
//#ErrorThrowingConsumer