[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.resources;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static javax.ws.rs.core.Response.Status.BAD_REQUEST;
+import static javax.ws.rs.core.Response.Status.CONFLICT;
+import static javax.ws.rs.core.Response.Status.CREATED;
+import static javax.ws.rs.core.Response.Status.NOT_FOUND;
+import static javax.ws.rs.core.Response.Status.NO_CONTENT;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentMap;
+
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+
+import org.onlab.packet.IpAddress;
+import org.onlab.util.ItemNotFoundException;
+import org.onosproject.rest.AbstractWebResource;
+import org.onosproject.vtnrsc.DefaultRouter;
+import org.onosproject.vtnrsc.FixedIp;
+import org.onosproject.vtnrsc.Router;
+import org.onosproject.vtnrsc.Router.Status;
+import org.onosproject.vtnrsc.RouterGateway;
+import org.onosproject.vtnrsc.RouterId;
+import org.onosproject.vtnrsc.RouterInterface;
+import org.onosproject.vtnrsc.SubnetId;
+import org.onosproject.vtnrsc.TenantId;
+import org.onosproject.vtnrsc.TenantNetworkId;
+import org.onosproject.vtnrsc.VirtualPortId;
+import org.onosproject.vtnrsc.router.RouterService;
+import org.onosproject.vtnrsc.routerinterface.RouterInterfaceService;
+import org.onosproject.vtnweb.web.RouterCodec;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+
+@Path("routers")
+public class RouterWebResource extends AbstractWebResource {
+    private final Logger log = LoggerFactory.getLogger(RouterWebResource.class);
+    public static final String CREATE_FAIL = "Router is failed to create!";
+    public static final String UPDATE_FAIL = "Router is failed to update!";
+    public static final String GET_FAIL = "Router is failed to get!";
+    public static final String NOT_EXIST = "Router does not exist!";
+    public static final String DELETE_SUCCESS = "Router delete success!";
+    public static final String JSON_NOT_NULL = "JsonNode can not be null";
+    public static final String INTFACR_ADD_SUCCESS = "Interface add success";
+    public static final String INTFACR_DEL_SUCCESS = "Interface delete success";
+
+    @GET
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response listRouters() {
+        Collection<Router> routers = get(RouterService.class).getRouters();
+        ObjectNode result = new ObjectMapper().createObjectNode();
+        result.set("routers", new RouterCodec().encode(routers, this));
+        return ok(result.toString()).build();
+    }
+
+    @GET
+    @Path("{routerUUID}")
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response getRouter(@PathParam("routerUUID") String id,
+                              @QueryParam("fields") List<String> fields) {
+
+        if (!get(RouterService.class).exists(RouterId.valueOf(id))) {
+            return Response.status(NOT_FOUND)
+                    .entity("The Router does not exists").build();
+        }
+        Router sub = nullIsNotFound(get(RouterService.class)
+                                            .getRouter(RouterId.valueOf(id)),
+                                    NOT_EXIST);
+
+        ObjectNode result = new ObjectMapper().createObjectNode();
+        if (fields.size() > 0) {
+            result.set("router",
+                       new RouterCodec().extracFields(sub, this, fields));
+        } else {
+            result.set("router", new RouterCodec().encode(sub, this));
+        }
+        return ok(result.toString()).build();
+    }
+
+    @POST
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
+    public Response createRouter(final InputStream input) {
+        try {
+            ObjectMapper mapper = new ObjectMapper();
+            JsonNode subnode = mapper.readTree(input);
+            Collection<Router> routers = createOrUpdateByInputStream(subnode);
+
+            Boolean result = nullIsNotFound((get(RouterService.class)
+                                                    .createRouters(routers)),
+                                            CREATE_FAIL);
+            if (!result) {
+                return Response.status(CONFLICT).entity(CREATE_FAIL).build();
+            }
+            return Response.status(CREATED).entity(result.toString()).build();
+
+        } catch (Exception e) {
+            return Response.status(BAD_REQUEST).entity(e.getMessage()).build();
+        }
+    }
+
+    @PUT
+    @Path("{routerUUID}")
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
+    public Response updateRouter(@PathParam("routerUUID") String id,
+                                 final InputStream input) {
+        try {
+            ObjectMapper mapper = new ObjectMapper();
+            JsonNode subnode = mapper.readTree(input);
+            Collection<Router> routers = createOrUpdateByInputStream(subnode);
+            Boolean result = nullIsNotFound(get(RouterService.class)
+                    .updateRouters(routers), UPDATE_FAIL);
+            if (!result) {
+                return Response.status(CONFLICT).entity(UPDATE_FAIL).build();
+            }
+            return ok(result.toString()).build();
+        } catch (Exception e) {
+            return Response.status(BAD_REQUEST).entity(e.getMessage()).build();
+        }
+    }
+
+    @Path("{routerUUID}")
+    @DELETE
+    public Response deleteSingleRouter(@PathParam("routerUUID") String id)
+            throws IOException {
+        try {
+            RouterId routerId = RouterId.valueOf(id);
+            Set<RouterId> routerIds = Sets.newHashSet(routerId);
+            get(RouterService.class).removeRouters(routerIds);
+            return Response.status(NO_CONTENT).entity(DELETE_SUCCESS).build();
+        } catch (Exception e) {
+            return Response.status(BAD_REQUEST).entity(e.getMessage()).build();
+        }
+    }
+
+    @PUT
+    @Path("{routerUUID}/add_router_interface")
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
+    public Response addRouterInterface(@PathParam("routerUUID") String id,
+                                       final InputStream input) {
+        if (!get(RouterService.class).exists(RouterId.valueOf(id))) {
+            return Response.status(NOT_FOUND).entity(NOT_EXIST).build();
+        }
+        try {
+            ObjectMapper mapper = new ObjectMapper();
+            JsonNode subnode = mapper.readTree(input);
+            if (!subnode.hasNonNull("id")) {
+                throw new IllegalArgumentException("id should not be null");
+            } else if (subnode.get("id").asText().isEmpty()) {
+                throw new IllegalArgumentException("id should not be empty");
+            }
+            RouterId routerId = RouterId.valueOf(id);
+            if (!subnode.hasNonNull("subnet_id")) {
+                throw new IllegalArgumentException("subnet_id should not be null");
+            } else if (subnode.get("subnet_id").asText().isEmpty()) {
+                throw new IllegalArgumentException("subnet_id should not be empty");
+            }
+            SubnetId subnetId = SubnetId.subnetId(subnode.get("subnet_id")
+                    .asText());
+            if (!subnode.hasNonNull("tenant_id")) {
+                throw new IllegalArgumentException("tenant_id should not be null");
+            } else if (subnode.get("tenant_id").asText().isEmpty()) {
+                throw new IllegalArgumentException("tenant_id should not be empty");
+            }
+            TenantId tenentId = TenantId.tenantId(subnode.get("tenant_id")
+                    .asText());
+            if (!subnode.hasNonNull("port_id")) {
+                throw new IllegalArgumentException("port_id should not be null");
+            } else if (subnode.get("port_id").asText().isEmpty()) {
+                throw new IllegalArgumentException("port_id should not be empty");
+            }
+            VirtualPortId portId = VirtualPortId.portId(subnode.get("port_id")
+                    .asText());
+            RouterInterface routerInterface = RouterInterface
+                    .routerInterface(subnetId, portId, routerId, tenentId);
+            get(RouterInterfaceService.class)
+                    .addRouterInterface(routerInterface);
+            return ok(INTFACR_ADD_SUCCESS).build();
+        } catch (Exception e) {
+            return Response.status(BAD_REQUEST).entity(e.getMessage()).build();
+        }
+    }
+
+    @PUT
+    @Path("{routerUUID}/remove_router_interface")
+    @Produces(MediaType.APPLICATION_JSON)
+    @Consumes(MediaType.APPLICATION_JSON)
+    public Response removeRouterInterface(@PathParam("routerUUID") String id,
+                                          final InputStream input) {
+        if (!get(RouterService.class).exists(RouterId.valueOf(id))) {
+            return Response.status(NOT_FOUND).entity(NOT_EXIST).build();
+        }
+        try {
+            ObjectMapper mapper = new ObjectMapper();
+            JsonNode subnode = mapper.readTree(input);
+            if (!subnode.hasNonNull("id")) {
+                throw new IllegalArgumentException("id should not be null");
+            } else if (subnode.get("id").asText().isEmpty()) {
+                throw new IllegalArgumentException("id should not be empty");
+            }
+            RouterId routerId = RouterId.valueOf(id);
+            if (!subnode.hasNonNull("subnet_id")) {
+                throw new IllegalArgumentException("subnet_id should not be null");
+            } else if (subnode.get("subnet_id").asText().isEmpty()) {
+                throw new IllegalArgumentException("subnet_id should not be empty");
+            }
+            SubnetId subnetId = SubnetId.subnetId(subnode.get("subnet_id")
+                    .asText());
+            if (!subnode.hasNonNull("port_id")) {
+                throw new IllegalArgumentException("port_id should not be null");
+            } else if (subnode.get("port_id").asText().isEmpty()) {
+                throw new IllegalArgumentException("port_id should not be empty");
+            }
+            VirtualPortId portId = VirtualPortId.portId(subnode.get("port_id")
+                    .asText());
+            if (!subnode.hasNonNull("tenant_id")) {
+                throw new IllegalArgumentException("tenant_id should not be null");
+            } else if (subnode.get("tenant_id").asText().isEmpty()) {
+                throw new IllegalArgumentException("tenant_id should not be empty");
+            }
+            TenantId tenentId = TenantId.tenantId(subnode.get("tenant_id")
+                    .asText());
+            RouterInterface routerInterface = RouterInterface
+                    .routerInterface(subnetId, portId, routerId, tenentId);
+            get(RouterInterfaceService.class)
+                    .removeRouterInterface(routerInterface);
+            return ok(INTFACR_DEL_SUCCESS).build();
+        } catch (Exception e) {
+            return Response.status(BAD_REQUEST).entity(e.getMessage()).build();
+        }
+    }
+
+    private Collection<Router> createOrUpdateByInputStream(JsonNode subnode)
+            throws Exception {
+        checkNotNull(subnode, JSON_NOT_NULL);
+        JsonNode routerNode = subnode.get("routers");
+        if (routerNode == null) {
+            routerNode = subnode.get("router");
+        }
+        log.debug("routerNode is {}", routerNode.toString());
+
+        if (routerNode.isArray()) {
+            throw new Exception("only singleton requests allowed");
+        } else {
+            return changeJsonToSub(routerNode);
+        }
+    }
+
+    /**
+     * Returns a collection of floatingIps from floatingIpNodes.
+     *
+     * @param routerNode the router json node
+     * @return routers a collection of router
+     * @throws Exception
+     */
+    public Collection<Router> changeJsonToSub(JsonNode routerNode)
+            throws Exception {
+        checkNotNull(routerNode, JSON_NOT_NULL);
+        Map<RouterId, Router> subMap = new HashMap<RouterId, Router>();
+        if (!routerNode.hasNonNull("id")) {
+            new IllegalArgumentException("id should not be null");
+        } else if (routerNode.get("id").asText().isEmpty()) {
+            throw new IllegalArgumentException("id should not be empty");
+        }
+        RouterId id = RouterId.valueOf(routerNode.get("id").asText());
+
+        if (!routerNode.hasNonNull("tenant_id")) {
+            throw new IllegalArgumentException("tenant_id should not be null");
+        } else if (routerNode.get("tenant_id").asText().isEmpty()) {
+            throw new IllegalArgumentException("tenant_id should not be empty");
+        }
+        TenantId tenantId = TenantId.tenantId(routerNode.get("tenant_id")
+                .asText());
+
+        VirtualPortId gwPortId = null;
+        if (routerNode.hasNonNull("gw_port_id")) {
+            gwPortId = VirtualPortId.portId(routerNode.get("gw_port_id")
+                    .asText());
+        }
+
+        if (!routerNode.hasNonNull("status")) {
+            throw new IllegalArgumentException("status should not be null");
+        } else if (routerNode.get("status").asText().isEmpty()) {
+            throw new IllegalArgumentException("status should not be empty");
+        }
+        Status status = Status.valueOf(routerNode.get("status").asText());
+
+        String routerName = null;
+        if (routerNode.hasNonNull("name")) {
+            routerName = routerNode.get("name").asText();
+        }
+
+        boolean adminStateUp = true;
+        checkArgument(routerNode.get("admin_state_up").isBoolean(),
+                      "admin_state_up should be boolean");
+        if (routerNode.hasNonNull("admin_state_up")) {
+            adminStateUp = routerNode.get("admin_state_up").asBoolean();
+        }
+        boolean distributed = false;
+        if (routerNode.hasNonNull("distributed")) {
+            distributed = routerNode.get("distributed").asBoolean();
+        }
+        RouterGateway gateway = null;
+        if (routerNode.hasNonNull("external_gateway_info")) {
+            gateway = jsonNodeToGateway(routerNode.get("external_gateway_info"));
+        }
+        List<String> routes = new ArrayList<String>();
+        DefaultRouter routerObj = new DefaultRouter(id, routerName,
+                                                    adminStateUp, status,
+                                                    distributed, gateway,
+                                                    gwPortId, tenantId, routes);
+        subMap.put(id, routerObj);
+        return Collections.unmodifiableCollection(subMap.values());
+    }
+
+    /**
+     * Changes JsonNode Gateway to the Gateway.
+     *
+     * @param gateway the gateway JsonNode
+     * @return gateway
+     */
+    private RouterGateway jsonNodeToGateway(JsonNode gateway) {
+        checkNotNull(gateway, JSON_NOT_NULL);
+        if (!gateway.hasNonNull("network_id")) {
+            throw new IllegalArgumentException("network_id should not be null");
+        } else if (gateway.get("network_id").asText().isEmpty()) {
+            throw new IllegalArgumentException("network_id should not be empty");
+        }
+        TenantNetworkId networkId = TenantNetworkId.networkId(gateway
+                .get("network_id").asText());
+
+        if (!gateway.hasNonNull("enable_snat")) {
+            throw new IllegalArgumentException("enable_snat should not be null");
+        } else if (gateway.get("enable_snat").asText().isEmpty()) {
+            throw new IllegalArgumentException("enable_snat should not be empty");
+        }
+        checkArgument(gateway.get("enable_snat").isBoolean(),
+                      "enable_snat should be boolean");
+        boolean enableSnat = gateway.get("enable_snat").asBoolean();
+
+        if (!gateway.hasNonNull("external_fixed_ips")) {
+            throw new IllegalArgumentException(
+                                          "external_fixed_ips should not be null");
+        } else if (gateway.get("external_fixed_ips").isNull()) {
+            throw new IllegalArgumentException(
+                                          "external_fixed_ips should not be empty");
+        }
+        Collection<FixedIp> fixedIpList = jsonNodeToFixedIp(gateway
+                .get("external_fixed_ips"));
+        RouterGateway gatewayObj = RouterGateway.routerGateway(networkId,
+                                                               enableSnat,
+                                                               fixedIpList);
+        return gatewayObj;
+    }
+
+    /**
+     * Changes JsonNode fixedIp to a collection of the fixedIp.
+     *
+     * @param fixedIp the allocationPools JsonNode
+     * @return a collection of fixedIp
+     */
+    private Collection<FixedIp> jsonNodeToFixedIp(JsonNode fixedIp) {
+        checkNotNull(fixedIp, JSON_NOT_NULL);
+        ConcurrentMap<Integer, FixedIp> fixedIpMaps = Maps.newConcurrentMap();
+        Integer i = 0;
+        for (JsonNode node : fixedIp) {
+            if (!node.hasNonNull("subnet_id")) {
+                throw new IllegalArgumentException("subnet_id should not be null");
+            } else if (node.get("subnet_id").asText().isEmpty()) {
+                throw new IllegalArgumentException("subnet_id should not be empty");
+            }
+            SubnetId subnetId = SubnetId.subnetId(node.get("subnet_id")
+                    .asText());
+            if (!node.hasNonNull("ip_address")) {
+                throw new IllegalArgumentException("ip_address should not be null");
+            } else if (node.get("ip_address").asText().isEmpty()) {
+                throw new IllegalArgumentException("ip_address should not be empty");
+            }
+            IpAddress ipAddress = IpAddress.valueOf(node.get("ip_address")
+                    .asText());
+            FixedIp fixedIpObj = FixedIp.fixedIp(subnetId, ipAddress);
+
+            fixedIpMaps.putIfAbsent(i, fixedIpObj);
+            i++;
+        }
+        return Collections.unmodifiableCollection(fixedIpMaps.values());
+    }
+
+    /**
+     * Returns the specified item if that items is null; otherwise throws not
+     * found exception.
+     *
+     * @param item item to check
+     * @param <T> item type
+     * @param message not found message
+     * @return item if not null
+     * @throws org.onlab.util.ItemNotFoundException if item is null
+     */
+    protected <T> T nullIsNotFound(T item, String message) {
+        if (item == null) {
+            throw new ItemNotFoundException(message);
+        }
+        return item;
+    }
+}

+/*
+ * 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;
+    }
+}