Getting properties from within a Processor needs interaction with the exchange object. This can be accomplished by the following code:

public static class MyProccessor implements Processor {

    public void process(Exchange exchange) throws Exception {
        String prop = exchange
                         .getContext()
                              .resolvePropertyPlaceholders("{{my.property}}");
    }
}

Tested on Apache Camel K Runtime 1.16.0, Apache Camel 3.19.0, Minikube v1.29.0 and WSL2 Ubuntu 20.04.4 LTS

In HTTP requests (and other requests or messages) you usually get a payload and a bunch of headers. In Camel you can find the payload in the “body” variable like this:

public class MyRoute extends RouteBuilder {

    @Override
    public void configure() throws Exception {
           from("timer:mytimer?repeatCount=1")
                  .to("https://www.google.com")
                  .log("${body}");
    }
}

So, how do you access the headers? There is another variable for this called “in” and it can be used like this:

public class MyRoute extends RouteBuilder {

    @Override
    public void configure() throws Exception {
           from("timer:mytimer?repeatCount=1")
                  .to("https://www.google.com")
                  .log("${in.headers}") // Log all incoming  headers
                  .log("${in.headers.Content-Type}"); // Log a specific header
    }
}

Tested on Ubuntu 20.04.4 LTS, Apache Camel 3.20, Minikube v1.29.0 (Camel-K) and Java 1.8.0_352