There are two built-in logger factories for writing log messages from the Optimizely Log API to .NET Diagnostics Trace; the `EPiServer.Logging.TraceLoggerFactory
` and the `EPiServer.Logging.TraceSourceLoggerFactory
`.
Note
In Optimizely Digital Experience Platform (DXP), Optimizely logs are redirected into .NET Diagnostic Trace, as long as the code uses the Optimizely logging abstraction `
EPiServer.Logging.LogManager
`. If you are using log4net and deploying in Optimizely DXP, replace `log4net
` with `EPiServer.Logging
`. See also [Logging](🔗) for more information on switching logging APIs.
## EPiServer.Logging.TraceLoggerFactory
The `EPiServer.Logging.TraceLoggerFactory
` logger redirects all log messages to diagnostics trace.
Optimizely log level | maps to |
Optimizely Critical and Error Log | system diagnostics trace error level |
Optimizely Warning Log API | system diagnostics trace warning level |
Optimizely Information Log API | system diagnostics trace Information level |
Optimizely Debug and Trace Log API | not logged |
You enable `EPiServer.Logging.TraceLoggerFactory
` like this:
Or from the** episerver.framework** section like this:
## EPiServer.Logging.TraceSourceLoggerFactory
The `EPiServer.Logging.TraceSourceLoggerFactory
`Â redirects all log messages to diagnostics trace source. In this implementation each logger name has its own source switch trace.
Optimizely log level | maps to |
Optimizely Critical Log API level | system diagnostics trace source critical level |
Optimizely Error Log API level | system diagnostics trace source error level |
Optimizely Warning Log API level | system diagnostics trace source warning level |
Optimizely Information Log API level | system diagnostics trace source Information level |
Optimizely Debug and Trace Log API | system diagnostics Verbose |
You can enable the `EPiServer.Logging.TraceSourceLoggerFactory
` like this:
Or from the **episerver.framework** section like this:
By default, the logging level is set to the **Error** level. If you need to log lower levels than the Error level you need to configure it in the **system.diagnostics** section like this:
## Register Logger Factory via configuration
To register a logger factory via configuration, you need to add the logger factory type in the **appSettings** section:
Or from **episerver.framework** section:
Note
The **appsetting** section value always has a higher priority than the **episerver.framework** section value.