use a separate annotation for the router, less confusing

server/src/main/java/io/druid/client/RoutingDruidClient.java

@@ -30,6 +30,7 @@ import com.metamx.http.client.HttpClient;
 import com.metamx.http.client.response.HttpResponseHandler;
 import io.druid.guice.annotations.Client;
 import io.druid.query.Query;
+import io.druid.server.router.Router;
 import org.jboss.netty.handler.codec.http.HttpHeaders;
 
 import javax.inject.Inject;
@@ -52,7 +53,7 @@ public class RoutingDruidClient<IntermediateType, FinalType>
   @Inject
   public RoutingDruidClient(
       ObjectMapper objectMapper,
-      @Client HttpClient httpClient
+      @Router HttpClient httpClient
   )
   {
     this.objectMapper = objectMapper;

server/src/main/java/io/druid/server/router/Router.java

@@ -0,0 +1,36 @@
+/*
+ * Druid - a distributed column store.
+ * Copyright (C) 2012, 2013  Metamarkets Group Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+package io.druid.server.router;
+
+import com.google.inject.BindingAnnotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ */
+@Target({ElementType.FIELD, ElementType.PARAMETER, ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+@BindingAnnotation
+public @interface Router
+{
+}

services/src/main/java/io/druid/cli/CliRouter.java

@@ -39,6 +39,7 @@ import io.druid.guice.annotations.Self;
 import io.druid.server.initialization.JettyServerInitializer;
 import io.druid.server.router.CoordinatorRuleManager;
 import io.druid.server.router.QueryHostFinder;
+import io.druid.server.router.Router;
 import io.druid.server.router.TieredBrokerConfig;
 import io.druid.server.router.TieredBrokerHostSelector;
 import org.eclipse.jetty.server.Server;
@@ -64,7 +65,7 @@ public class CliRouter extends ServerRunnable
   protected List<Object> getModules()
   {
     return ImmutableList.<Object>of(
-        new HttpClientModule("druid.router.http", Client.class),
+        new HttpClientModule("druid.router.http", Router.class),
         new Module()
         {
           @Override