AuditMetaData.java

package org.audt4j.demo.spring.config;

import javax.servlet.ServletRequest;

import org.audit4j.core.MetaData;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

public class AuditMetaData implements MetaData{
    private static final long serialVersionUID = 7243065407615627372L;

    @Override
    public String getOrigin() {
        try {
            return ((ServletRequest)((ServletRequestAttributes) RequestContextHolder.currentRequestAttributes()).getRequest()).getRemoteAddr();
        }catch(Exception e){
            e.printStackTrace();
        }
        return "unidentified";
    }

    @Override
    public String getActor() {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        if (authentication != null && authentication.getPrincipal() instanceof UserDetails) {
            return ((UserDetails) authentication.getPrincipal()).getUsername();
        }
        return "anonymous";
    }
}