Dropwizard doesn't log custom loggers to file

Question

I have a dropwizard app, where I configured logger appenders to file as follows:

logging:
  level: INFO

  loggers:
    \"mylogger\": INFO
    \"com.path.to.         


        

Answer 1

You can implement separate logger with the dropwizard using logback.

1.Configure logger in your Application class (i.e application start point with main method) like below.

LoggerContext context = (LoggerContext)LoggerFactory.getILoggerFactory();
context.reset();
ContextInitializer initializer = new ContextInitializer(context);
initializer.autoConfig();

2.Configure logback.xml like below.

    /var/log/applicationname-mylogger.log
    
        
        logFile.%d{yyyy-MM-dd}.log
        
        30
    
    false
    
        %-5relative %-5level %logger{35} - %msg%n
    


    /var/log/applicationame-com.path.to.class.log
    
        
        logFile.%d{yyyy-MM-dd}.log
        
        30
    
    false
    
        %-5relative %-5level %logger{35} - %msg%n
    


    
    


    
    

3.Now use logger

static final Logger OpLogger = LoggerFactory.getLogger("mylogger");
static final Logger classLogger = LoggerFactory.getLogger("com.path.to.class");

EDIT :

I have try to implement the same logger in my example project. It works fine in my case. We can not use the LOGGER before the Dropwizard application initialize. The Dropwizard initialized only when you call

  new ExampleApplication().run(args);

So, if logger is used before Dropwizard initialized, your log will not be there. I have tried to implemented scenario with main method. The first log statement is not printed as we have used logger before the Dropwizard initialization, but the second log statement will be printed.

  OpLogger.info("test 1");
  new ExampleApplication().run(args);
  ClassLogger.info("test 2);

Hope this will help you out to solve your problem.