org.apache.camel.NoSuchBeanException for error handler mapped to route - apache-camel

Question

I have the following route definitions file (linehaul-routes.xml):
<routes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://camel.apache.org/schema/spring"
xsi:schemaLocation="
http://camel.apache.org/schema/spring
http://camel.apache.org/schema/spring/camel-spring.xsd">
<route id="route1" errorHandlerRef="myErrorHandler">
<from uri="amqp:queue:DSMLH_consignment_event"/> <!-- AMQP queue to which I send messages to trigger the route !-->
<to uri="https://pesho.free.beeceptor.com/"/> <!-- Returns http 500 !-->
</route>
</routes>
I also have a file with error handler in the same directory (linehaul-error-handlers.xml):
<errorHandlers>
<errorHandler id="myErrorHandler" type="DefaultErrorHandler">
<redeliveryPolicy maximumRedeliveries="5" redeliveryDelay="2000"/>
</errorHandler>
</errorHandlers>
And application.properties
camel.context.name=testContext
camel.main.routes-include-pattern=classpath:routes/linehaul-routes.xml,classpath:routes/linehaul-error-handlers.xml
When I run the code I get the following stacktrace
2022-04-27 19:44:53,657 ERROR [org.apa.cam.qua.mai.CamelMainRuntime] (Quarkus Main Thread) [{}] Failed to start application: org.apache.camel.FailedToCreateRouteException: Failed to create route route1 at: >>> To[https://pesho.free.beeceptor.com/] <<< in route: Route(route1)[From[amqp:queue:DSMLH_consignment_event] -> [T... because of No bean could be found in the registry for: myErrorHandler of type: org.apache.camel.ErrorHandlerFactory
at org.apache.camel.reifier.RouteReifier.doCreateRoute(RouteReifier.java:240)
at org.apache.camel.reifier.RouteReifier.createRoute(RouteReifier.java:74)
at org.apache.camel.impl.DefaultModelReifierFactory.createRoute(DefaultModelReifierFactory.java:49)
at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:868)
at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:758)
at org.apache.camel.impl.engine.AbstractCamelContext.doInit(AbstractCamelContext.java:2862)
at org.apache.camel.quarkus.core.FastCamelContext.doInit(FastCamelContext.java:166)
at org.apache.camel.support.service.BaseService.init(BaseService.java:83)
at org.apache.camel.impl.engine.AbstractCamelContext.init(AbstractCamelContext.java:2568)
at org.apache.camel.support.service.BaseService.start(BaseService.java:111)
at org.apache.camel.impl.engine.AbstractCamelContext.start(AbstractCamelContext.java:2587)
at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:247)
at org.apache.camel.quarkus.main.CamelMain.doStart(CamelMain.java:94)
at org.apache.camel.support.service.BaseService.start(BaseService.java:119)
at org.apache.camel.quarkus.main.CamelMain.startEngine(CamelMain.java:140)
at org.apache.camel.quarkus.main.CamelMainRuntime.start(CamelMainRuntime.java:49)
at org.apache.camel.quarkus.core.CamelBootstrapRecorder.start(CamelBootstrapRecorder.java:45)
at io.quarkus.deployment.steps.CamelBootstrapProcessor$boot173480958.deploy_0(Unknown Source)
at io.quarkus.deployment.steps.CamelBootstrapProcessor$boot173480958.deploy(Unknown Source)
at io.quarkus.runner.ApplicationImpl.doStart(Unknown Source)
at io.quarkus.runtime.Application.start(Application.java:101)
at io.quarkus.runtime.ApplicationLifecycleManager.run(ApplicationLifecycleManager.java:103)
at io.quarkus.runtime.Quarkus.run(Quarkus.java:67)
at io.quarkus.runtime.Quarkus.run(Quarkus.java:41)
at io.quarkus.runtime.Quarkus.run(Quarkus.java:120)
at io.quarkus.runner.GeneratedMain.main(Unknown Source)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at io.quarkus.runner.bootstrap.StartupActionImpl$1.run(StartupActionImpl.java:103)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: org.apache.camel.NoSuchBeanException: No bean could be found in the registry for: myErrorHandler of type: org.apache.camel.ErrorHandlerFactory
at org.apache.camel.support.CamelContextHelper.mandatoryLookup(CamelContextHelper.java:241)
at org.apache.camel.model.errorhandler.ErrorHandlerHelper.lookupErrorHandlerFactory(ErrorHandlerHelper.java:82)
at org.apache.camel.reifier.errorhandler.ErrorHandlerRefReifier.lookupErrorHandler(ErrorHandlerRefReifier.java:41)
at org.apache.camel.reifier.errorhandler.ErrorHandlerRefReifier.createErrorHandler(ErrorHandlerRefReifier.java:35)
at org.apache.camel.impl.DefaultModelReifierFactory.createErrorHandler(DefaultModelReifierFactory.java:65)
at org.apache.camel.reifier.ProcessorReifier.wrapInErrorHandler(ProcessorReifier.java:745)
at org.apache.camel.reifier.ProcessorReifier.wrapChannelInErrorHandler(ProcessorReifier.java:726)
at org.apache.camel.reifier.ProcessorReifier.wrapChannel(ProcessorReifier.java:705)
at org.apache.camel.reifier.ProcessorReifier.wrapChannel(ProcessorReifier.java:611)
at org.apache.camel.reifier.ProcessorReifier.wrapProcessor(ProcessorReifier.java:607)
at org.apache.camel.reifier.ProcessorReifier.makeProcessor(ProcessorReifier.java:854)
at org.apache.camel.reifier.ProcessorReifier.addRoutes(ProcessorReifier.java:579)
at org.apache.camel.reifier.RouteReifier.doCreateRoute(RouteReifier.java:236)
... 31 more
What is wrong with the route to error handler mapping ?
(My goal is to make my route to re-try several times on http 500)

Answer 1

Camel Quarkus only supports 'simple' XML routes. You cannot define beans directly like you can with Camel Spring XML.
Instead, you can declare a CDI bean and reference it in the XML. For example.
#Named("myErrorHandler")
public DefaultErrorHandlerBuilder createDefaultErrorHandler() {
return new DefaultErrorHandlerBuilder()
.maximumRedeliveries(5)
.redeliveryDelay(2000);
}
Then you can reference the bean via errorHandlerRef on the route tag.
<route id="route1" errorHandlerRef="myErrorHandler">