package com.test;

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.model.dataformat.JsonLibrary;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Collectors;

public class MyRouteBuilder extends RouteBuilder {
    @Override
    public void configure() throws Exception {
        from("timer:test?repeatCount=1").setBody(constant(initUser().toJson())).to("direct:unmarshal");
        from("direct:unmarshal").unmarshal().json(JsonLibrary.Jackson, User.class).to("direct:logger");
        from("direct:logger").log("${body}");
    }

    static class User {

        private String name;

        private Set<String> hobbies;

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public Set<String> getHobbies() {
            return hobbies;
        }

        public void setHobbies(Set<String> hobbies) {
            this.hobbies = hobbies;
        }

        public String toJson() {
            return String.format("{\"name\":\"%s\",\"hobbies\":[%s]}", name, getHobbies().stream().map(s -> String.format("\"%s\"", s)).collect(Collectors.joining(",")));
        }

        public String toString() {
            return String.format("User name: %s, hobbies: [%s]", name, getHobbies().stream().map(s -> String.format("\"%s\"", s)).collect(Collectors.joining(",")));
        }
    }

    public User initUser() {
        final User user = new User();
        user.setName("Jan");
        Set<String> hobbies = new HashSet<>();
        hobbies.add("reading");
        hobbies.add("biking");
        user.setHobbies(hobbies);
        return user;
    }
}

...
2021-06-21 07:54:03,086 INFO  [org.apa.cam.k.Runtime] (main) Apache Camel K Runtime 1.6.0.fuse-800003-redhat-00001
2021-06-21 07:54:03,102 INFO  [org.apa.cam.qua.cor.CamelBootstrapRecorder] (main) bootstrap runtime: org.apache.camel.quarkus.main.CamelMainRuntime
2021-06-21 07:54:03,139 INFO  [org.apa.cam.k.lis.SourcesConfigurer] (main) Loading routes from: SourceDefinition{name='MyRouteBuilder', language='java', location='file:/etc/camel/sources/i-source-000/MyRouteBuilder.java', }
2021-06-21 07:54:03,785 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main) Apache Camel 3.7.0.fuse-800004-redhat-00001 (camel-1) is starting
2021-06-21 07:54:03,786 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main) StreamCaching is not in use. If using streams then it's recommended to enable stream caching. See more details at http://camel.apache.org/stream-caching.html
2021-06-21 07:54:03,789 INFO  [org.apa.cam.com.jac.JacksonDataFormat] (main) The option autoDiscoverObjectMapper is set to false, Camel won't search in the registry
2021-06-21 07:54:03,850 INFO  [org.apa.cam.imp.eng.InternalRouteStartupManager] (main) Route: route1 started and consuming from: timer://test
2021-06-21 07:54:03,852 INFO  [org.apa.cam.imp.eng.InternalRouteStartupManager] (main) Route: route2 started and consuming from: direct://unmarshal
2021-06-21 07:54:03,852 INFO  [org.apa.cam.imp.eng.InternalRouteStartupManager] (main) Route: route3 started and consuming from: direct://logger
2021-06-21 07:54:03,854 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main) Total 3 routes, of which 3 are started
2021-06-21 07:54:03,854 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main) Apache Camel 3.7.0.fuse-800004-redhat-00001 (camel-1) started in 69ms
2021-06-21 07:54:03,856 INFO  [io.quarkus] (main) camel-k-integration 1.3.0 on JVM (powered by Quarkus 1.7.6.Final-redhat-00014) started in 1.086s. 
2021-06-21 07:54:03,857 INFO  [io.quarkus] (main) Profile prod activated. 
2021-06-21 07:54:03,857 INFO  [io.quarkus] (main) Installed features: [camel-bean, camel-core, camel-direct, camel-endpointdsl, camel-jackson, camel-k-core, camel-k-loader-java, camel-k-runtime, camel-main, camel-support-common, camel-support-xml, camel-timer, cdi]
2021-06-21 07:54:04,895 INFO  [route3] (Camel (camel-1) thread #0 - timer://test) User name: Jan, hobbies: ["reading","biking"]

...
2021-06-21 08:01:14,925 INFO  [org.apa.cam.k.Runtime] (main) Apache Camel K Runtime 1.7.1.fuse-800013-redhat-00001
2021-06-21 08:01:14,927 INFO  [org.apa.cam.qua.cor.CamelBootstrapRecorder] (main) bootstrap runtime: org.apache.camel.quarkus.main.CamelMainRuntime
2021-06-21 08:01:14,966 INFO  [org.apa.cam.k.lis.SourcesConfigurer] (main) Loading routes from: SourceDefinition{name='MyRouteBuilder', language='java', location='file:/etc/camel/sources/MyRouteBuilder.java', }
2021-06-21 08:01:15,582 INFO  [org.apa.cam.com.jac.AbstractJacksonDataFormat] (main) The option autoDiscoverObjectMapper is set to false, Camel won't search in the registry
2021-06-21 08:01:15,622 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main) Routes startup summary (total:3 started:3)
2021-06-21 08:01:15,622 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main)     Started route1 (timer://test)
2021-06-21 08:01:15,622 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main)     Started route2 (direct://unmarshal)
2021-06-21 08:01:15,622 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main)     Started route3 (direct://logger)
2021-06-21 08:01:15,622 INFO  [org.apa.cam.imp.eng.AbstractCamelContext] (main) Apache Camel 3.10.0.fuse-800005-redhat-00001 (camel-1) started in 87ms (build:0ms init:44ms start:43ms)
2021-06-21 08:01:15,624 INFO  [io.quarkus] (main) camel-k-integration 1.4.0 on JVM (powered by Quarkus 1.11.7.Final-redhat-00003) started in 1.089s. 
2021-06-21 08:01:15,625 INFO  [io.quarkus] (main) Profile prod activated. 
2021-06-21 08:01:15,625 INFO  [io.quarkus] (main) Installed features: [camel-bean, camel-core, camel-direct, camel-jackson, camel-java-joor-dsl, camel-k-core, camel-k-runtime, camel-support-common, camel-timer, cdi]
2021-06-21 08:01:16,636 ERROR [org.apa.cam.pro.err.DefaultErrorHandler] (Camel (camel-1) thread #0 - timer://test) Failed delivery for (MessageId: 36E3D4E1EBE11F5-0000000000000000 on ExchangeId: 36E3D4E1EBE11F5-0000000000000000). Exhausted after delivery attempt: 1 caught: java.lang.IllegalArgumentException: Unrecognized Type: [null]

Message History (complete message history is disabled)
---------------------------------------------------------------------------------------------------------------------------------------
RouteId              ProcessorId          Processor                                                                        Elapsed (ms)
[route1            ] [route1            ] [from[timer://test?repeatCount=1]                                              ] [        14]
	...
[route2            ] [unmarshal1        ] [unmarshal[org.apache.camel.model.dataformat.JsonDataFormat@706cb08]           ] [         0]

Stacktrace
---------------------------------------------------------------------------------------------------------------------------------------
: java.lang.IllegalArgumentException: Unrecognized Type: [null]
	at com.fasterxml.jackson.databind.type.TypeFactory._fromAny(TypeFactory.java:1319)
	at com.fasterxml.jackson.databind.type.TypeFactory.constructType(TypeFactory.java:698)
	at com.fasterxml.jackson.databind.cfg.MapperConfig.constructType(MapperConfig.java:306)
	at com.fasterxml.jackson.databind.ObjectReader.forType(ObjectReader.java:748)
	at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1468)
	at org.apache.camel.component.jackson.AbstractJacksonDataFormat.unmarshal(AbstractJacksonDataFormat.java:185)
	at org.apache.camel.support.processor.UnmarshalProcessor.process(UnmarshalProcessor.java:64)
	at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:463)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:179)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor.scheduleMain(DefaultReactiveExecutor.java:64)
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:184)
	at org.apache.camel.impl.engine.CamelInternalProcessor.process(CamelInternalProcessor.java:398)
	at org.apache.camel.component.timer.TimerConsumer.sendTimerExchange(TimerConsumer.java:209)
	at org.apache.camel.component.timer.TimerConsumer$1.run(TimerConsumer.java:76)
	at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
	at java.base/java.util.TimerThread.run(Timer.java:506)

2021-06-21 08:01:16,638 WARN  [org.apa.cam.com.tim.TimerConsumer] (Camel (camel-1) thread #0 - timer://test) Error processing exchange. Exchange[36E3D4E1EBE11F5-0000000000000000]. Caused by: [java.lang.IllegalArgumentException - Unrecognized Type: [null]]: java.lang.IllegalArgumentException: Unrecognized Type: [null]
	at com.fasterxml.jackson.databind.type.TypeFactory._fromAny(TypeFactory.java:1319)
	at com.fasterxml.jackson.databind.type.TypeFactory.constructType(TypeFactory.java:698)
	at com.fasterxml.jackson.databind.cfg.MapperConfig.constructType(MapperConfig.java:306)
	at com.fasterxml.jackson.databind.ObjectReader.forType(ObjectReader.java:748)
	at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1468)
	at org.apache.camel.component.jackson.AbstractJacksonDataFormat.unmarshal(AbstractJacksonDataFormat.java:185)
	at org.apache.camel.support.processor.UnmarshalProcessor.process(UnmarshalProcessor.java:64)
	at org.apache.camel.processor.errorhandler.RedeliveryErrorHandler$SimpleTask.run(RedeliveryErrorHandler.java:463)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor$Worker.schedule(DefaultReactiveExecutor.java:179)
	at org.apache.camel.impl.engine.DefaultReactiveExecutor.scheduleMain(DefaultReactiveExecutor.java:64)
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:184)
	at org.apache.camel.impl.engine.CamelInternalProcessor.process(CamelInternalProcessor.java:398)
	at org.apache.camel.component.timer.TimerConsumer.sendTimerExchange(TimerConsumer.java:209)
	at org.apache.camel.component.timer.TimerConsumer$1.run(TimerConsumer.java:76)
	at java.base/java.util.TimerThread.mainLoop(Timer.java:556)
	at java.base/java.util.TimerThread.run(Timer.java:506)