Is there a way to mask log events?
To apply this converter one simply has to add the following line to the logback configuration: which defines a new function mask which can be used in a pattern in order to mask any log events matching any of the patterns defined in the custom converter.
Which is the Logback Appender for System.out?
The ConsoleAppender is one of the more basic appenders available in Logback, as it can only log messages to System.out or System.err. The configuration for this appender usually requires specifying an encoder, as we saw in the basic example config from the previous section.
How is maskingconverter used in Logback Stack Overflow?
In one of my tech-demo projects I defined a MaskingConverter class that defines a series of patterns the logging event is analyzed with and on a match updated which is used inside my logback configuration.
Which is the third component of Logback library?
Of course, future versions of Logback will add additional encoders with more powerful capabilities. Loggers are the third main component of Logback, which developers can use to log messages at a certain level. The library defines 5 log levels: TRACE, DEBUG, INFO]
How to mask sensitive data in Java logs?
As probing each line for one or multiple pattern matches might be costly, the Java code above includes Markers that can be used in log statements to send certain meta information on the log statement itself to Logback/SLF4J. Based on such markers different behaviors might be achievable.
Why do I need to mask data in logs?
I need to be able to search an event for any one of a number of patterns and replace the text in the pattern with a masked value. This is a feature in our application intended to prevent sensitive information falling into the logs. As the information can be from a large variety of sources, it is not practical to apply filters on all the inputs.
How to mask passwords in a log line?
This class defines a number of RegEx patterns the respective log-line should be compared against and on a match lead to an update of the event by masking the passwords. Note that this code sample assumes that a log line only contains one kind of password.