GuiceFilter has static state. Normally that is not a problem since you'd have one GuiceFilter per WebAppClassLoader.
In your case you have GuiceFilter defined in the same ClassLoader as both of your servers. What happens is: The second server overwrites the GuiceFilter#pipeline field (with warning). This makes guice servlet behave the same for both servers. A couple of ideas o) refactor GuiceFilter not to use static state ;) o) use custom classloaders to force isolation (don't forget to set the Thread.currentThread().setContextClassLoader(server1cl)) What I'd probably do o) don't use embedded server I think it is best to test on the same server and same setup as you are using in production so there are no surprises. Your test environment should be a close copy of production. I don't like embedded servers for testing in general case. What I'd probably use is Arquillian with Managed Container for Tomcat 7 (no embedded stuff). See here for usage https://github.com/arquillian/arquillian-container-tomcat/blob/master/tomcat-managed-7/pom.xml https://github.com/arquillian/arquillian-container-tomcat/blob/master/tomcat-managed-7/src/test/java/org/jboss/arquillian/container/tomcat/managed_7/TomcatManagedClientTestCase.java https://docs.jboss.org/author/display/ARQ/Multiple+Containers?_sscc=t You have many options. I am sure you will figure some more options if you haven't already. Cheers Alen Dne petek, 09. marec 2012 10:35:11 UTC+1 je oseba Peter napisala: > > For testing, I want to set up two web servers on different ports > programmatically, each configured differently. However there seems to > be contamination of object instances between both servers, and I don't > understand where it's coming from. I am using Guice, Jersey and > GrizzlyWebServer. Guice gives me a warning "Multiple Servlet injectors > detected", which is intentional since I have two different servers. I > understand that singletongs (@Singleton) in Guice are per injector, > and not per JVM, so each server should have its own singleton > instance. > > I've written a stand-alone program to illustrate the problem. It > starts up two servers on localhost on different ports. When pointing a > browser at "http://localhost:9991/context/"; I expect "9991" in the > body of the response, and analogously for port 9992. However, _both_ > servers respond with "9992". I've also printed out the object hashes > in the body of the response, to illustrate that both servers are > sharing the same object, which is not what I want. > > Can someone explain what I am doing wrong? > > --- > package systemtest; > > import com.google.inject.*; > import com.google.inject.servlet.GuiceFilter; > import com.google.inject.servlet.GuiceServletContextListener; > import com.sun.grizzly.http.embed.GrizzlyWebServer; > import com.sun.grizzly.http.servlet.ServletAdapter; > import com.sun.jersey.guice.JerseyServletModule; > import com.sun.jersey.guice.spi.container.servlet.GuiceContainer; > > import javax.servlet.ServletContextEvent; > import javax.ws.rs.GET; > import javax.ws.rs.Path; > import javax.ws.rs.Produces; > import javax.ws.rs.core.MediaType; > import javax.ws.rs.core.Response; > import java.io.IOException; > > /** > * @author Peter De Maeyer > */ > public class MyWebServer { > > private final int port; > > private final GrizzlyWebServer webServer; > > public MyWebServer( int aPort ) { > port = aPort; > ServletAdapter adapter = new ServletAdapter(); > adapter.addServletListener( MyGuiceConfig.class.getName() ); > adapter.addFilter( new GuiceFilter(), "Guice filter", null ); > adapter.setServletPath( "/" ); > adapter.setContextPath( "/context" ); > adapter.addContextParameter( "port", String.valueOf( port ) ); > webServer = new GrizzlyWebServer( port ); > webServer.addGrizzlyAdapter( adapter, null ); > } > > public static void main( String[] aRgs ) throws IOException { > MyWebServer server9991 = new MyWebServer( 9991 ); > try { > server9991.start(); > MyWebServer server9992 = new MyWebServer( 9992 ); > try { > server9992.start(); > System.out.println( "Press any key to stop..." ); > System.in.read(); > } > finally { > server9992.stop(); > } > } > finally { > server9991.stop(); > } > } > > public MyWebServer start() throws IOException { > System.out.printf( "Starting web server on port %d", > port ).println(); > webServer.start(); > return this; > } > > public MyWebServer stop() { > System.out.printf( "Stopping web server on port %d", > port ).println(); > webServer.stop(); > return this; > } > > public static class MyGuiceConfig extends > GuiceServletContextListener { > > private volatile String home; > > @Override protected Injector getInjector() { > return Guice.createInjector( new MyModule( home ), new > MyServletModule() ); > } > > @Override public void contextInitialized( ServletContextEvent > aEvent ) { > home = aEvent.getServletContext().getInitParameter( "port" ); > super.contextInitialized( aEvent ); > } > } > > public static class MyModule implements Module { > > private final String port; > > public MyModule( String aPort ) { > port = aPort; > } > > @Override public void configure( Binder aBinder ) { > aBinder.bind( MyService.class ); > } > > @Provides > @Singleton > public MyPort providePort() { > return new MyPort( port ); > } > } > > public static class MyPort { > > private final String port; > > public MyPort( String aPort ) { > port = aPort; > } > > @Override public String toString() { > return port + " (port#" + System.identityHashCode( this ) + ")"; > } > } > > @Path( "/" ) > public static class MyService { > > private final MyPort port; > > @Inject > public MyService( MyPort aPort ) { > port = aPort; > } > > @GET > @Produces( MediaType.TEXT_HTML ) > public Response get() { > String content = "<html><body>" + port + " (service#" + > System.identityHashCode( this ) + ") </body></html>"; > return Response.ok( content ).build(); > } > } > > public static class MyServletModule extends JerseyServletModule { > > @Override protected void configureServlets() { > serve( "/*" ).with( GuiceContainer.class ); > } > } > } > --- -- You received this message because you are subscribed to the Google Groups "google-guice" group. 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