This can be done by adding the spring boot actuator plugin.
Actuator brings production-ready features to our application.
Heres a good article that explains about the actuator:
http://www.baeldung.com/spring-boot-actuators
More features on how to use the actuator can be found here:
https://docs.spring.io/spring-boot/docs/2.0.x/actuator-api/html/
Note: The actuator service eventually should sit behind a security domain and context so that these services wont be exposed to the public. This article will not cover that right now.
Here's a step by step approach to dynamically set the log levels
1. Add the actuator library:
compile("org.springframework.boot:spring-boot-starter-actuator")
2. In the application properties, add you logging configuration and make sure to enable all the actuator end points.
logging.level.org.springframework.web=ERROR
logging.level.org.hibernate=ERROR
logging.file=testing-features.log
management.endpoints.web.exposure.include=*
3. Implement a simple controller that will print a log to your log file
@RestController
public class TestController {
private Logger log = LogManager.getLogger(TestController.class.toString());
@RequestMapping(value = "/service", method = RequestMethod.GET)
public ResponseEntity<String> callService(){
log.info("Service Called");
return ResponseEntity.ok("Hello World"); }
}
4. View the root loggers log level:
http://localhost:8080/actuator/loggers/root
5. Update the root loggers log level by sending a post request.
Use postman to send a POST request.
