Logger-config

Logger-config is a module in Light-4j framework which will use to get the loggers and their current logging levels, And also can able to change the logging level for given logger at runtime (Example: Change logging level to DEBUG for “com.networknt” logger for troubleshooting purpose).

Note: This feature is only supposed to be used in development environment but not in production due to security reasons.

There are three LoggerHandlers available in logging module.

• LoggerGetHandler : This handler will provide the current logging level for given logger.

  End point : /api/{serviceName}/loggers/{loggerName}.

  Method : GET

  Example URL : https://localhost:8443/api/customers/loggers/com.networknt

• LoggersGetHandler : This handler will provide the all available loggers & their current logging levels.

  End point : /api/{serviceName}/loggers

  Method : GET

  Example URL : https://localhost:8443/api/customers/loggers

• LoggerPostHandler : Using this handler we can change the logging level for given logger e.g. change logging level to DEBUG for “com.networknt” logger for troubleshooting purpose.

  End point : /api/{serviceName}/loggers/{loggerName}

  Method : POST

  Example Input format : {“loggingLevel”:“DEBUG”}

  Example URL : https://localhost:8443/api/customers/loggers/com.networknt

Input is mandatory, If you provide the input in request body, it will change and return the updated logging level for given logger else it will throw an error.

Usage

Add dependency.

<dependency>
  <groupId>com.networknt</groupId>
  <artifactId>logger-config</artifactId>
  <version>${version.light-4j}</version>
</dependency>

Configuration for handler.yml.

Add these handlers.

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Add the below end points under path.

- path: '/api/customers/loggers'
  method: 'get'
  exec:
  - getloggers

- path: '/api/customers/loggers/{loggerName}'
  method: 'get'
  exec:
  - getlogger

- path: '/api/customers/loggers/{loggerName}'
  method: 'post'
  exec:
  - body
  - postlogger
  

By default logger is enabled in logger-config.yml. if you want to disable it, just add the logger-config.yml file in your resource folder and make enabled property to false in logger-config.yml.