Quarkus - MDC - Azure Application Insights

Question

I'm having trouble with configuring MDC for Quarkus and to expose the additional information to Azure Application Insight. When I run the application locally, than the information is shown correctly in my console.

Quarkus version: 2.11.2.Final

application.yml:

quarkus:
    log:
        console:
            format: "%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p [%c{3.}] (%t) [%X] %s%e%n"

code example:

import org.jboss.logging.Logger;

@Inject
Logger log;

@GET
@Path("/hello")
public String sayHello() {
    MDC.put("example", "abc");
    log.info("Say hello...");
    return "Hello";
}

The value 'Say hello' is shown in the Azure Application Insights but the value 'abc' not.

Any ideas?

Answer 1

All your code is ok but you are missing something here.

According to documentation format spec , you have to specify which MDC property you want to log by adding its name.

In your case it would be 'example', see updated application.yml :

quarkus:
    log:
        console:
            format: "%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p [%c{3.}] (%t) [%X{example}] %s%e%n"