|Oracle GlassFish Server Reference Manual
Part Number E24938-01
glassfish:web:servlet:beforeServiceEvent( java.lang.String servletName, java.lang.String appName, java.lang.String hostName)
This event is sent whenever a servlet is about to process a request.
The name of the servlet whose
service method is being entered.
The name of the web application to which the servlet belongs.
The name of the virtual server on which the application has been deployed.