Jian Li | 0c45180 | 2016-02-24 22:39:25 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.rest.resources; |
| 17 | |
| 18 | import com.fasterxml.jackson.databind.JsonNode; |
| 19 | import com.fasterxml.jackson.databind.node.ArrayNode; |
| 20 | import com.fasterxml.jackson.databind.node.ObjectNode; |
| 21 | import com.google.common.collect.Sets; |
| 22 | import org.onosproject.net.DeviceId; |
| 23 | import org.onosproject.net.region.Region; |
| 24 | import org.onosproject.net.region.RegionAdminService; |
| 25 | import org.onosproject.net.region.RegionId; |
| 26 | import org.onosproject.net.region.RegionService; |
| 27 | import org.onosproject.rest.AbstractWebResource; |
| 28 | |
| 29 | import javax.ws.rs.Consumes; |
| 30 | import javax.ws.rs.DELETE; |
| 31 | import javax.ws.rs.GET; |
| 32 | import javax.ws.rs.POST; |
| 33 | import javax.ws.rs.PUT; |
| 34 | import javax.ws.rs.Path; |
| 35 | import javax.ws.rs.PathParam; |
| 36 | import javax.ws.rs.Produces; |
| 37 | import javax.ws.rs.core.MediaType; |
| 38 | import javax.ws.rs.core.Response; |
| 39 | import java.io.IOException; |
| 40 | import java.io.InputStream; |
| 41 | import java.net.URI; |
| 42 | import java.net.URISyntaxException; |
| 43 | import java.util.Set; |
| 44 | |
| 45 | import static org.onlab.util.Tools.nullIsNotFound; |
| 46 | |
| 47 | /** |
| 48 | * Manages region and device membership. |
| 49 | */ |
| 50 | @Path("regions") |
| 51 | public class RegionsWebResource extends AbstractWebResource { |
| 52 | private final RegionService regionService = get(RegionService.class); |
| 53 | private final RegionAdminService regionAdminService = get(RegionAdminService.class); |
| 54 | |
| 55 | private static final String REGION_NOT_FOUND = "Region is not found for "; |
| 56 | private static final String REGION_INVALID = "Invalid regionId in region update request"; |
| 57 | private static final String DEVICE_IDS_INVALID = "Invalid device identifiers"; |
| 58 | |
| 59 | /** |
| 60 | * Returns set of all regions. |
| 61 | * |
| 62 | * @return 200 OK |
| 63 | * @onos.rsModel Regions |
| 64 | */ |
| 65 | @GET |
| 66 | @Produces(MediaType.APPLICATION_JSON) |
| 67 | public Response getRegions() { |
| 68 | final Iterable<Region> regions = regionService.getRegions(); |
| 69 | return ok(encodeArray(Region.class, "regions", regions)).build(); |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * Returns the region with the specified identifier. |
| 74 | * |
| 75 | * @param regionId region identifier |
| 76 | * @return 200 OK, 404 not found |
| 77 | * @onos.rsModel Region |
| 78 | */ |
| 79 | @GET |
| 80 | @Produces(MediaType.APPLICATION_JSON) |
| 81 | @Path("{regionId}") |
| 82 | public Response getRegionById(@PathParam("regionId") String regionId) { |
| 83 | final RegionId rid = RegionId.regionId(regionId); |
| 84 | final Region region = nullIsNotFound(regionService.getRegion(rid), |
| 85 | REGION_NOT_FOUND + rid.toString()); |
| 86 | return ok(codec(Region.class).encode(region, this)).build(); |
| 87 | } |
| 88 | |
| 89 | /** |
| 90 | * Returns the set of devices that belong to the specified region. |
| 91 | * |
| 92 | * @param regionId region identifier |
| 93 | * @return 200 OK |
| 94 | * @onos.rsModel RegionDeviceIds |
| 95 | */ |
| 96 | @GET |
| 97 | @Produces(MediaType.APPLICATION_JSON) |
| 98 | @Path("{regionId}/devices") |
| 99 | public Response getRegionDevices(@PathParam("regionId") String regionId) { |
| 100 | final RegionId rid = RegionId.regionId(regionId); |
| 101 | final Iterable<DeviceId> deviceIds = regionService.getRegionDevices(rid); |
| 102 | final ObjectNode root = mapper().createObjectNode(); |
| 103 | final ArrayNode deviceIdsNode = root.putArray("deviceIds"); |
| 104 | deviceIds.forEach(did -> deviceIdsNode.add(did.toString())); |
| 105 | return ok(root).build(); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Creates a new region using the supplied JSON input stream. |
| 110 | * |
| 111 | * @param stream region JSON stream |
| 112 | * @return status of the request - CREATED if the JSON is correct, |
| 113 | * BAD_REQUEST if the JSON is invalid |
| 114 | * @onos.rsModel RegionPost |
| 115 | */ |
| 116 | @POST |
| 117 | @Consumes(MediaType.APPLICATION_JSON) |
| 118 | @Produces(MediaType.APPLICATION_JSON) |
| 119 | public Response createRegion(InputStream stream) { |
| 120 | URI location; |
| 121 | try { |
| 122 | ObjectNode jsonTree = (ObjectNode) mapper().readTree(stream); |
| 123 | final Region region = codec(Region.class).decode(jsonTree, this); |
| 124 | final Region resultRegion = regionAdminService.createRegion(region.id(), |
| 125 | region.name(), region.type(), region.masters()); |
| 126 | location = new URI(resultRegion.id().id()); |
| 127 | } catch (IOException | URISyntaxException e) { |
| 128 | throw new IllegalArgumentException(e); |
| 129 | } |
| 130 | |
| 131 | return Response.created(location).build(); |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Updates the specified region using the supplied JSON input stream. |
| 136 | * |
| 137 | * @param regionId region identifier |
| 138 | * @param stream region JSON stream |
| 139 | * @return status of the request - UPDATED if the JSON is correct, |
| 140 | * BAD_REQUEST if the JSON is invalid |
| 141 | * @onos.rsModel RegionPost |
| 142 | */ |
| 143 | @PUT |
| 144 | @Path("{regionId}") |
| 145 | @Consumes(MediaType.APPLICATION_JSON) |
| 146 | @Produces(MediaType.APPLICATION_JSON) |
| 147 | public Response updateRegion(@PathParam("regionId") String regionId, |
| 148 | InputStream stream) { |
| 149 | try { |
| 150 | ObjectNode jsonTree = (ObjectNode) mapper().readTree(stream); |
| 151 | JsonNode specifiedRegionId = jsonTree.get("id"); |
| 152 | |
| 153 | if (specifiedRegionId != null && |
| 154 | !specifiedRegionId.asText().equals(regionId)) { |
| 155 | throw new IllegalArgumentException(REGION_INVALID); |
| 156 | } |
| 157 | |
| 158 | final Region region = codec(Region.class).decode(jsonTree, this); |
| 159 | regionAdminService.updateRegion(region.id(), |
| 160 | region.name(), region.type(), region.masters()); |
| 161 | } catch (IOException e) { |
| 162 | throw new IllegalArgumentException(e); |
| 163 | } |
| 164 | |
| 165 | return Response.ok().build(); |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Removes the specified region using the given region identifier. |
| 170 | * |
| 171 | * @param regionId region identifier |
| 172 | * @return 200 OK, 404 not found |
| 173 | */ |
| 174 | @DELETE |
| 175 | @Path("{regionId}") |
| 176 | @Produces(MediaType.APPLICATION_JSON) |
| 177 | public Response removeRegion(@PathParam("regionId") String regionId) { |
| 178 | final RegionId rid = RegionId.regionId(regionId); |
| 179 | regionAdminService.removeRegion(rid); |
| 180 | return Response.ok().build(); |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Adds the specified collection of devices to the region. |
| 185 | * |
| 186 | * @param regionId region identifier |
| 187 | * @param stream deviceIds JSON stream |
| 188 | * @return status of the request - CREATED if the JSON is correct, |
| 189 | * BAD_REQUEST if the JSON is invalid |
| 190 | * @onos.rsModel RegionDeviceIds |
| 191 | */ |
| 192 | @POST |
| 193 | @Path("{regionId}/devices") |
| 194 | @Consumes(MediaType.APPLICATION_JSON) |
| 195 | @Produces(MediaType.APPLICATION_JSON) |
| 196 | public Response addDevices(@PathParam("regionId") String regionId, |
| 197 | InputStream stream) { |
| 198 | final RegionId rid = RegionId.regionId(regionId); |
| 199 | |
| 200 | URI location; |
| 201 | try { |
| 202 | regionAdminService.addDevices(rid, extractDeviceIds(stream)); |
| 203 | location = new URI(rid.id()); |
| 204 | } catch (IOException | URISyntaxException e) { |
| 205 | throw new IllegalArgumentException(e); |
| 206 | } |
| 207 | |
| 208 | return Response.created(location).build(); |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Removes the specified collection of devices from the region. |
| 213 | * |
| 214 | * @param regionId region identifier |
| 215 | * @param stream deviceIds JSON stream |
| 216 | * @return 200 OK, 404 not found |
| 217 | * @onos.rsModel RegionDeviceIds |
| 218 | */ |
| 219 | @DELETE |
| 220 | @Path("{regionId}/devices") |
| 221 | @Consumes(MediaType.APPLICATION_JSON) |
| 222 | @Produces(MediaType.APPLICATION_JSON) |
| 223 | public Response removeDevices(@PathParam("regionId") String regionId, |
| 224 | InputStream stream) { |
| 225 | final RegionId rid = RegionId.regionId(regionId); |
| 226 | |
| 227 | try { |
| 228 | regionAdminService.removeDevices(rid, extractDeviceIds(stream)); |
| 229 | } catch (IOException e) { |
| 230 | throw new IllegalArgumentException(e); |
| 231 | } |
| 232 | |
| 233 | return Response.ok().build(); |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Extracts device ids from a given JSON string. |
| 238 | * |
| 239 | * @param stream deviceIds JSON stream |
| 240 | * @return a set of device identifiers |
| 241 | * @throws IOException |
| 242 | */ |
| 243 | private Set<DeviceId> extractDeviceIds(InputStream stream) throws IOException { |
| 244 | ObjectNode jsonTree = (ObjectNode) mapper().readTree(stream); |
| 245 | JsonNode deviceIdsJson = jsonTree.get("deviceIds"); |
| 246 | |
| 247 | if (deviceIdsJson == null || deviceIdsJson.size() == 0) { |
| 248 | throw new IllegalArgumentException(DEVICE_IDS_INVALID); |
| 249 | } |
| 250 | |
| 251 | Set<DeviceId> deviceIds = Sets.newHashSet(); |
| 252 | deviceIdsJson.forEach(did -> deviceIds.add(DeviceId.deviceId(did.asText()))); |
| 253 | |
| 254 | return deviceIds; |
| 255 | } |
| 256 | } |