Assign a name to thread on request arrival - spring

Question

I have a JEE7 webapp that uses jax-ws annotations to define some services, and uses spring framework.
I want to assign a name of choice to the thread that serves a request when it arrives.
I thought about putting Thread.currentThread().setName("") and this works fine if I put this row inside every #path annotated method, but it's a bit pointless to add the same code in every method. I am thinking to put it in a earlier stage.
Is there some sort of "#onrequest" annotation to define some code common to all request?
Thanks in advance.

Answer 1

I got this working with a filter. I just declared a new filter in web.xml and then I implemented the filter class.
In web.xml:
<filter>
<filter-name>threadRenamingFilter</filter-name>
<filter-class>RestRequestFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>threadRenamingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
In filter class:
import java.io.IOException;
import java.util.Date;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class RestRequestFilter implements Filter {
private final Log log = LogFactory.getLog(this.getClass());
#Override
public void destroy() {
}
#Override
public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2) throws IOException, ServletException {
//Before request execution
Date now = new Date();
Long startTime = now.getTime();
String newName = startTime.toString();
log.trace("Thread " + newName + " started at: " + now.toString());
//renaming of the thread with the time of spawn
Thread.currentThread().setName(newName);
//Request execution
arg2.doFilter(arg0, arg1);
//After request execution
now = new Date();
Long endTime = now.getTime();
Long executionTime = endTime - startTime;
log.trace("Thread " + newName + " end at: " + now.toString());
log.debug("Thread " + newName + " completed in: " + executionTime + "ms");
}
#Override
public void init(FilterConfig arg0) throws ServletException {
}
}

Answer 2

you can use interceptors to handle that, basically you need to write a class which implements:
http://docs.spring.io/spring/docs/3.2.x/javadoc-api/org/springframework/web/servlet/HandlerInterceptor.html
and wire it with spring. Then in method postHandle or preHandle you do what you want ; )
Here is some tutorial how to do that:
http://viralpatel.net/blogs/spring-mvc-interceptor-example/
you can also take a look at filters.