Logging in Dropwizard

Relevant Documentation

• Dropwizard: http://www.dropwizard.io/0.9.2/docs/manual/configuration.html
• Logback: https://logback.qos.ch/manual/architecture.html

What you need to know

• Levels: TRACE < DEBUG < INFO < WARN < ERROR
• How do I configure logging in dropwizard so that logs go to different (relevant) files?
  • Define a logger (by classpath prefix) and a specific appender.
  • Appenders should be specific files.
  • You can specify threshold or level filters.

logging:
  level: INFO
  loggers:
    "io.dropwizard": 
      level: INFO
      additive: false
      appenders:
        - type: file
          currentLogFilename: $APP_HOME/var/log/dropwizard.log
          archivedLogFilenamePattern: $APP_HOME/var/log/dropwizard-%d.log.gz
          archivedFileCount: 5
    "org.hibernate.SQL":
      level: DEBUG
      additive: false
      appenders:
        - type: file
          currentLogFilename: $APP_HOME/var/log/app-sql.log
          archivedLogFilenamePattern: $APP_HOME/var/log/app-sql-%d.log.gz
          archivedFileCount: 5
  appenders:
    - type: console