use reflections to iterate over registered resources

service/src/main/java/com/telephoners/krakyournet/ctf/CTFApplication.java

 package com.telephoners.krakyournet.ctf;
 
 import com.bazaarvoice.dropwizard.webjars.WebJarBundle;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.reflect.ClassPath;
 import com.google.inject.Guice;
 import com.google.inject.Injector;
 import com.telephoners.krakyournet.ctf.auth.ExampleAuthenticator;
+import com.telephoners.krakyournet.ctf.beans.User;
 import com.telephoners.krakyournet.ctf.commands.PurgeDatabaseCommand;
 import com.telephoners.krakyournet.ctf.commands.RegisterTasksCommand;
 import com.telephoners.krakyournet.ctf.commands.RegisterTeamsCommand;
 import com.telephoners.krakyournet.ctf.core.ApplicationConfiguration;
 import com.telephoners.krakyournet.ctf.logging.LoggingFilter;
 import com.telephoners.krakyournet.ctf.modules.ApplicationModule;
-import com.telephoners.krakyournet.ctf.beans.User;
 import com.telephoners.krakyournet.ctf.repositories.UsersRepository;
-import com.telephoners.krakyournet.ctf.resources.*;
 import io.dropwizard.Application;
 import io.dropwizard.assets.AssetsBundle;
 import io.dropwizard.auth.AuthDynamicFeature;
@@ -24,6 +25,7 @@ import io.dropwizard.setup.Bootstrap;
 import io.dropwizard.setup.Environment;
 import org.glassfish.jersey.server.filter.RolesAllowedDynamicFeature;
 
+import java.io.IOException;
 import java.util.stream.Stream;
 
 public class CTFApplication extends Application<ApplicationConfiguration>
@@ -42,16 +44,13 @@ public class CTFApplication extends Application<ApplicationConfiguration>
                 .forEach(bootstrap::addBundle);
     }
 
-    private void registerResources(Environment environment)
+    private void registerResources(Environment environment) throws IOException
     {
-        //todo: use reflections to iterate over resources
         JerseyEnvironment jersey = environment.jersey();
-        jersey.register(injector.getInstance(TeamsResource.class));
-        jersey.register(injector.getInstance(TasksResource.class));
-        jersey.register(injector.getInstance(ProxyResource.class));
-        jersey.register(injector.getInstance(SolutionsResource.class));
-        jersey.register(injector.getInstance(TaskResource.class));
-        jersey.register(injector.getInstance(UtilResource.class));
+        final ClassPath classPath = ClassPath.from(this.getClass().getClassLoader());
+        ImmutableSet<ClassPath.ClassInfo> resourceClasses = classPath.getTopLevelClasses("com.telephoners.krakyournet.ctf.resources");
+        resourceClasses.stream()
+                .forEach(classInfo -> jersey.register(injector.getInstance(classInfo.load())));
     }
 
     private void registerAuthFeatures(Environment environment)

service/src/main/java/com/telephoners/krakyournet/ctf/repositories/SolutionsRepository.java

@@ -9,9 +9,7 @@ import javax.inject.Inject;
 import javax.inject.Singleton;
 import java.util.List;
 import java.util.Map;
-import java.util.Optional;
 import java.util.function.Function;
-import java.util.function.Predicate;
 import java.util.stream.Collectors;
 
 @Singleton