Camel MQTT Configuration options DSL route URL parameter with bean value not working - spring-boot

Question

I ma trying to test pub/sub from an external broker ( AWs IoT ); started off of the camel-example-spring-boot example project and added thecamel-mqtt-starter. Everything seems to work fine until I try to define the mqtt routes. I am having issues with configuring the sslContext url parameter :
#Configuration
public class AppConfig {
#Bean(name="awsiotsslcontext")
SSLContext awsiotsslcontext(){
SSLContext sslContext = null;
try{
ClassLoader cl = this.getClass().getClassLoader();
InputStream is = cl.getResourceAsStream("/cert/myApp.cert.pem");
// You could get a resource as a stream instead.
CertificateFactory cf = CertificateFactory.getInstance("X.509");
X509Certificate caCert = (X509Certificate)cf.generateCertificate(is);
TrustManagerFactory tmf = TrustManagerFactory
.getInstance(TrustManagerFactory.getDefaultAlgorithm());
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(null); // You don't need the KeyStore instance to come from a file.
ks.setCertificateEntry("caCert", caCert);
tmf.init(ks);
sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, tmf.getTrustManagers(), null);
} catch (Exception e){
}
return sslContext;
}
}
And then in my route builder :
#Component
public class SampleCamelRouter extends RouteBuilder {
#Autowired
SSLContext awsiotsslcontext;
#Override
public void configure() throws Exception {
from("timer://foo?repeatCount=0&delay=5000&fixedRate=true&period=10s")
.setBody(simple("TEST MESSAGE"))
.to("mqtt:awsiot?host=ssl://{{aws.iot.host}}:8883&publishTopicName={{aws.iot.sub.topic}}&sslContext=#awsiotsslcontext").log("Sent :"+body().convertToString().toString());
from("mqtt:awsiot?host=ssl://{{aws.iot.host}}:8883&subscribeTopicName={{aws.iot.sub.topic}}&sslContext=#awsiotsslcontext").log("Recieved : "+body().convertToString().toString());
}
}
getting the following error :
java.lang.IllegalArgumentException: Could not find a suitable setter
for property: sslContext as there isn't a setter method with same
type: java.lang.String nor type conversion possible: No type converter
available to convert from type: java.lang.String to the required type:
javax.net.ssl.SSLContext with value #awsiotsslcontext
I believe this is a simple endpoint configuration issue, but tried various things and nothing seems to work. Having the # with the bean name should have camel to look up in the registry for the bean but here it recognizes it as String ? Any workaround here ?

Answer 1

This was an issue on camel route configuration; when I configured my route under a #Configuration instead of having under #Component as suggested by the documentation, it doesn't complain about bean definition with '#' in the URI; I would expect in a Spring Boot Application the beans would load before the routes by default:
#Bean
RouteBuilder awsIoTRoute() {
return new RouteBuilder() {
#Override
public void configure() throws Exception {
from("timer://foo?repeatCount=0&delay=5000&fixedRate=true&period=17s")
.setBody(simple("TEST MESSAGE"))
.to("mqtt:awsIoTPublisher?host=ssl://{{aws.iot.host}}:8883&publishTopicName={{aws.iot.pub.topic}}&clientId={{aws.iot.pub.clientId}}&sslContext=#sslContext")
.log("Sent :"+body().convertToString().toString());
from("mqtt:awsIoTReciever?host=ssl://{{aws.iot.host}}:8883&subscribeTopicName={{aws.iot.sub.topic}}&clientId={{aws.iot.sub.clientId}}&sslContext=#sslContext").log("Recieved : "+body().convertToString());
}
};
}