Creating a pluggable audit logger

Pluggable audit providers are discovered using the Java SPI (Service Provider Interface) functionality. To create a pluggable audit provider you need to:

1. implement the nl.b3p.viewer.audit.LoggingService interface:

public final class NOPLoggingService implements LoggingService {

    @Override
    public void logMessage(String user, String message) {
    }
}

2. add a SPI file named nl.b3p.viewer.audit.LoggingService that lists the classname of your implementation in the META-INF/services directory of your jar file.

nl.b3p.viewer.audit.impl.NOPLoggingService

SPI file META-INF/services/nl.b3p.viewer.audit.LoggingService

In your deployment you should add the created jar file in the WEb-INF/lib directory of the viewer webapp.

A working example is available in the viewer-audit-noplogger module.