| /* |
| * 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.rest; |
| |
| import java.util.Set; |
| |
| import javax.ws.rs.GET; |
| import javax.ws.rs.Path; |
| import javax.ws.rs.PathParam; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.core.MediaType; |
| import javax.ws.rs.core.Response; |
| |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.ElementId; |
| import org.onosproject.net.HostId; |
| import org.onosproject.net.topology.PathService; |
| |
| import com.fasterxml.jackson.databind.node.ObjectNode; |
| |
| /** |
| * REST resource for interacting with path calculations. |
| */ |
| @Path("paths") |
| public class PathsWebResource extends AbstractWebResource { |
| |
| // Host id format is 00:00:00:00:00:01/-1 |
| private static final int VLAN_SEPARATOR_OFFSET = 17; |
| private static final int FIRST_MAC_ADDRESS_SEPARATOR_OFFSET = 2; |
| private static final int SECOND_MAC_ADDRESS_SEPARATOR_OFFSET = 5; |
| private static final int THIRD_MAC_ADDRESS_SEPARATOR_OFFSET = 8; |
| |
| /** |
| * Determines if the id appears to be the id of a host. |
| * |
| * @param id id string |
| * @return HostId if the id is valid, null otherwise |
| */ |
| private HostId isHostId(String id) { |
| |
| if (id.length() < VLAN_SEPARATOR_OFFSET + 1 || |
| id.charAt(FIRST_MAC_ADDRESS_SEPARATOR_OFFSET) != ':' || |
| id.charAt(SECOND_MAC_ADDRESS_SEPARATOR_OFFSET) != ':' || |
| id.charAt(THIRD_MAC_ADDRESS_SEPARATOR_OFFSET) != ':' || |
| id.charAt(VLAN_SEPARATOR_OFFSET) != '/') { |
| return null; |
| } |
| |
| return HostId.hostId(id); |
| } |
| |
| /** |
| * Gets the paths between two elements. |
| * |
| * @param src source |
| * @param dst destination |
| * @return path data |
| */ |
| @GET |
| @Produces(MediaType.APPLICATION_JSON) |
| @Path("{src}/{dst}") |
| public Response getPath(@PathParam("src") String src, |
| @PathParam("dst") String dst) { |
| PathService pathService = get(PathService.class); |
| |
| ElementId srcElement = isHostId(src); |
| ElementId dstElement = isHostId(dst); |
| |
| if (srcElement == null) { |
| // Doesn't look like a host, assume it is a device |
| srcElement = DeviceId.deviceId(src); |
| } |
| |
| if (dstElement == null) { |
| // Doesn't look like a host, assume it is a device |
| dstElement = DeviceId.deviceId(dst); |
| } |
| |
| Set<org.onosproject.net.Path> paths = |
| pathService.getPaths(srcElement, dstElement); |
| ObjectNode root = |
| encodeArray(org.onosproject.net.Path.class, "paths", paths); |
| return ok(root).build(); |
| } |
| |
| } |