[ONOS-2828] add router service cli

Change-Id: I633c5c9e4ac51cac2f7dc327aeb35713a201fd74
diff --git a/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/cli/router/RouterQueryCommand.java b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/cli/router/RouterQueryCommand.java
new file mode 100644
index 0000000..a8a4b58
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/main/java/org/onosproject/vtnrsc/cli/router/RouterQueryCommand.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.vtnrsc.cli.router;
+
+import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.commands.Option;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.vtnrsc.Router;
+import org.onosproject.vtnrsc.RouterId;
+import org.onosproject.vtnrsc.router.RouterService;
+
+/**
+ * Supports for query a list of router.
+ */
+@Command(scope = "onos", name = "routers", description = "Supports for creating a router")
+public class RouterQueryCommand extends AbstractShellCommand {
+    @Option(name = "-i", aliases = "--id", description = "The router identifier",
+            required = false, multiValued = false)
+    String id = null;
+
+    @Option(name = "-n", aliases = "--routerName", description = "The name of router",
+            required = false, multiValued = false)
+    String routerName = null;
+
+    private static final String FMT = "routerId=%s, routerName=%s, tenantId=%s, gatewayPortId=%s,"
+            + "externalGatewayInfo=%s, status=%s, adminStateUp=%s, distributed=%s, routers=%s";
+
+    @Override
+    protected void execute() {
+        RouterService service = get(RouterService.class);
+        if (id != null) {
+            Router router = service.getRouter(RouterId.valueOf(id));
+            printFloatingIp(router);
+        } else if (routerName != null) {
+            Iterable<Router> routers = service.getRouters();
+            if (routers == null) {
+                return;
+            }
+            for (Router router : routers) {
+                if (router.name().equals(routerName)) {
+                    printFloatingIp(router);
+                    return;
+                }
+            }
+            print(null, "The routerName is not existed");
+        } else {
+            Iterable<Router> routers = service.getRouters();
+            if (routers == null) {
+                return;
+            }
+            for (Router router : routers) {
+                printFloatingIp(router);
+            }
+        }
+    }
+
+    private void printFloatingIp(Router router) {
+        print(FMT, router.id(), router.name(), router.tenantId(),
+              router.gatewayPortid(), router.externalGatewayInfo(),
+              router.status(), router.adminStateUp(), router.distributed(),
+              router.routes());
+    }
+}