[ONOS-2753] add restfull service of router

Change-Id: I7764b05d0a43eeaa2fe868afb817ad94d4b8bc64

+/*
+ * 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.vtnweb.web;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import java.util.Iterator;
+import java.util.List;
+
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.vtnrsc.Router;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+/**
+ * Router JSON codec.
+ */
+public class RouterCodec extends JsonCodec<Router> {
+    @Override
+    public ObjectNode encode(Router router, CodecContext context) {
+        checkNotNull(router, "router cannot be null");
+        ObjectNode result = context
+                .mapper()
+                .createObjectNode()
+                .put("id", router.id().routerId())
+                .put("status", router.status().toString())
+                .put("name", router.name().toString())
+                .put("admin_state_up", router.adminStateUp())
+                .put("tenant_id", router.tenantId().toString())
+                .put("routes",
+                     router.routes() == null ? null : router.routes()
+                             .toString());
+        result.set("external_gateway_info",
+                   router.externalGatewayInfo() == null ? null
+                                                       : new RouterGatewayInfoCodec()
+                                                        .encode(router.externalGatewayInfo(), context));
+
+        return result;
+    }
+
+    public ObjectNode extracFields(Router router, CodecContext context,
+                                   List<String> fields) {
+        checkNotNull(router, "router cannot be null");
+        ObjectNode result = context.mapper().createObjectNode();
+        Iterator<String> i = fields.iterator();
+        while (i.hasNext()) {
+            String s = i.next();
+            if (s.equals("id")) {
+                result.put("id", router.id().routerId());
+            }
+            if (s.equals("status")) {
+                result.put("status", router.status().toString());
+            }
+            if (s.equals("name")) {
+                result.put("name", router.name().toString());
+            }
+            if (s.equals("admin_state_up")) {
+                result.put("admin_state_up", router.adminStateUp());
+            }
+            if (s.equals("tenant_id")) {
+                result.put("tenant_id", router.tenantId().toString());
+            }
+            if (s.equals("routes")) {
+                result.put("routes", router.routes() == null ? null : router
+                        .routes().toString());
+            }
+            if (s.equals("external_gateway_info")) {
+                result.set("external_gateway_info",
+                           router.externalGatewayInfo() == null ? null
+                                                               : new RouterGatewayInfoCodec()
+                                                                       .encode(router.externalGatewayInfo(),
+                                                                               context));
+            }
+        }
+        return result;
+    }
+}

+/*
+ * 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.vtnweb.web;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.vtnrsc.RouterGateway;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+/**
+ * Subnet Router Gateway Info codec.
+ */
+public class RouterGatewayInfoCodec extends JsonCodec<RouterGateway> {
+    @Override
+    public ObjectNode encode(RouterGateway routerGateway, CodecContext context) {
+        checkNotNull(routerGateway, "routerGateway cannot be null");
+        ObjectNode result = context.mapper().createObjectNode()
+                .put("network_id", routerGateway.networkId().toString());
+        result.set("external_fixed_ips", new FixedIpCodec()
+                .encode(routerGateway.externalFixedIps(), context));
+        return result;
+    }
+}