northbound-api/src/main/java/org/opendaylight/neutron/northbound/api/NeutronPortsNorthbound.java

   1 /*
   2  * Copyright IBM Corporation, 2013.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.neutron.northbound.api;
  10
  11 import org.codehaus.enunciate.jaxrs.ResponseCode;
  12 import org.codehaus.enunciate.jaxrs.StatusCodes;
  13 import org.opendaylight.neutron.spi.INeutronNetworkCRUD;
  14 import org.opendaylight.neutron.spi.INeutronPortAware;
  15 import org.opendaylight.neutron.spi.INeutronPortCRUD;
  16 import org.opendaylight.neutron.spi.INeutronSubnetCRUD;
  17 import org.opendaylight.neutron.spi.NeutronCRUDInterfaces;
  18 import org.opendaylight.neutron.spi.NeutronPort;
  19 import org.opendaylight.neutron.spi.NeutronSubnet;
  20 import org.opendaylight.neutron.spi.Neutron_IPs;
  21
  22 import javax.ws.rs.Consumes;
  23 import javax.ws.rs.DELETE;
  24 import javax.ws.rs.DefaultValue;
  25 import javax.ws.rs.GET;
  26 import javax.ws.rs.POST;
  27 import javax.ws.rs.PUT;
  28 import javax.ws.rs.Path;
  29 import javax.ws.rs.PathParam;
  30 import javax.ws.rs.Produces;
  31 import javax.ws.rs.QueryParam;
  32 import javax.ws.rs.core.Context;
  33 import javax.ws.rs.core.MediaType;
  34 import javax.ws.rs.core.Response;
  35 import javax.ws.rs.core.UriInfo;
  36 import java.util.ArrayList;
  37 import java.util.HashMap;
  38 import java.util.Iterator;
  39 import java.util.List;
  40
  41 /**
  42  * Neutron Northbound REST APIs.<br>
  43  * This class provides REST APIs for managing neutron port objects
  44  *
  45  * <br>
  46  * <br>
  47  * Authentication scheme : <b>HTTP Basic</b><br>
  48  * Authentication realm : <b>opendaylight</b><br>
  49  * Transport : <b>HTTP and HTTPS</b><br>
  50  * <br>
  51  * HTTPS Authentication is disabled by default. Administrator can enable it in
  52  * tomcat-server.xml after adding a proper keystore / SSL certificate from a
  53  * trusted authority.<br>
  54  * More info :
  55  * http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html#Configuration
  56  *
  57  */
  58
  59 @Path("/ports")
  60 public class NeutronPortsNorthbound {
  61
  62     final String mac_regex="^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$";
  63
  64     private NeutronPort extractFields(NeutronPort o, List<String> fields) {
  65         return o.extractFields(fields);
  66     }
  67
  68     @Context
  69     UriInfo uriInfo;
  70
  71     /**
  72      * Returns a list of all Ports */
  73
  74     @GET
  75     @Produces({ MediaType.APPLICATION_JSON })
  76     //@TypeHint(OpenStackPorts.class)
  77     @StatusCodes({
  78         @ResponseCode(code = 200, condition = "Operation successful"),
  79         @ResponseCode(code = 401, condition = "Unauthorized"),
  80         @ResponseCode(code = 501, condition = "Not Implemented"),
  81         @ResponseCode(code = 503, condition = "No providers available") })
  82     public Response listPorts(
  83             // return fields
  84             @QueryParam("fields") List<String> fields,
  85             // note: openstack isn't clear about filtering on lists, so we aren't handling them
  86             @QueryParam("id") String queryID,
  87             @QueryParam("network_id") String queryNetworkID,
  88             @QueryParam("name") String queryName,
  89             @QueryParam("admin_state_up") String queryAdminStateUp,
  90             @QueryParam("status") String queryStatus,
  91             @QueryParam("mac_address") String queryMACAddress,
  92             @QueryParam("device_id") String queryDeviceID,
  93             @QueryParam("device_owner") String queryDeviceOwner,
  94             @QueryParam("tenant_id") String queryTenantID,
  95             // linkTitle
  96             @QueryParam("limit") Integer limit,
  97             @QueryParam("marker") String marker,
  98             @DefaultValue("false") @QueryParam("page_reverse") Boolean pageReverse
  99             // sorting not supported
 100             ) {
 101         INeutronPortCRUD portInterface = NeutronCRUDInterfaces.getINeutronPortCRUD(this);
 102         if (portInterface == null) {
 103             throw new ServiceUnavailableException("Port CRUD Interface "
 104                     + RestMessages.SERVICEUNAVAILABLE.toString());
 105         }
 106         List<NeutronPort> allPorts = portInterface.getAllPorts();
 107         List<NeutronPort> ans = new ArrayList<NeutronPort>();
 108         Iterator<NeutronPort> i = allPorts.iterator();
 109         while (i.hasNext()) {
 110             NeutronPort oSS = i.next();
 111             if ((queryID == null || queryID.equals(oSS.getID())) &&
 112                     (queryNetworkID == null || queryNetworkID.equals(oSS.getNetworkUUID())) &&
 113                     (queryName == null || queryName.equals(oSS.getName())) &&
 114                     (queryAdminStateUp == null || queryAdminStateUp.equals(oSS.getAdminStateUp())) &&
 115                     (queryStatus == null || queryStatus.equals(oSS.getStatus())) &&
 116                     (queryMACAddress == null || queryMACAddress.equals(oSS.getMacAddress())) &&
 117                     (queryDeviceID == null || queryDeviceID.equals(oSS.getDeviceID())) &&
 118                     (queryDeviceOwner == null || queryDeviceOwner.equals(oSS.getDeviceOwner())) &&
 119                     (queryTenantID == null || queryTenantID.equals(oSS.getTenantID()))) {
 120                 if (fields.size() > 0) {
 121                     ans.add(extractFields(oSS,fields));
 122                 } else {
 123                     ans.add(oSS);
 124                 }
 125             }
 126         }
 127
 128         if (limit != null && ans.size() > 1) {
 129             // Return a paginated request
 130             NeutronPortRequest request = (NeutronPortRequest) PaginatedRequestFactory.createRequest(limit,
 131                     marker, pageReverse, uriInfo, ans, NeutronPort.class);
 132             return Response.status(200).entity(request).build();
 133         }
 134
 135         return Response.status(200).entity(
 136                 new NeutronPortRequest(ans)).build();
 137     }
 138
 139     /**
 140      * Returns a specific Port */
 141
 142     @Path("{portUUID}")
 143     @GET
 144     @Produces({ MediaType.APPLICATION_JSON })
 145     //@TypeHint(OpenStackPorts.class)
 146     @StatusCodes({
 147         @ResponseCode(code = 200, condition = "Operation successful"),
 148         @ResponseCode(code = 401, condition = "Unauthorized"),
 149         @ResponseCode(code = 404, condition = "Not Found"),
 150         @ResponseCode(code = 501, condition = "Not Implemented"),
 151         @ResponseCode(code = 503, condition = "No providers available") })
 152     public Response showPort(
 153             @PathParam("portUUID") String portUUID,
 154             // return fields
 155             @QueryParam("fields") List<String> fields ) {
 156         INeutronPortCRUD portInterface = NeutronCRUDInterfaces.getINeutronPortCRUD(this);
 157         if (portInterface == null) {
 158             throw new ServiceUnavailableException("Port CRUD Interface "
 159                     + RestMessages.SERVICEUNAVAILABLE.toString());
 160         }
 161         if (!portInterface.portExists(portUUID)) {
 162             throw new ResourceNotFoundException("port UUID does not exist.");
 163         }
 164         if (fields.size() > 0) {
 165             NeutronPort ans = portInterface.getPort(portUUID);
 166             return Response.status(200).entity(
 167                     new NeutronPortRequest(extractFields(ans, fields))).build();
 168         } else {
 169             return Response.status(200).entity(
 170                     new NeutronPortRequest(portInterface.getPort(portUUID))).build();
 171         }
 172     }
 173
 174     /**
 175      * Creates new Ports */
 176
 177     @POST
 178     @Produces({ MediaType.APPLICATION_JSON })
 179     @Consumes({ MediaType.APPLICATION_JSON })
 180     //@TypeHint(OpenStackPorts.class)
 181     @StatusCodes({
 182         @ResponseCode(code = 201, condition = "Created"),
 183         @ResponseCode(code = 400, condition = "Bad Request"),
 184         @ResponseCode(code = 401, condition = "Unauthorized"),
 185         @ResponseCode(code = 403, condition = "Forbidden"),
 186         @ResponseCode(code = 404, condition = "Not Found"),
 187         @ResponseCode(code = 409, condition = "Conflict"),
 188         @ResponseCode(code = 501, condition = "Not Implemented"),
 189         @ResponseCode(code = 503, condition = "MAC generation failure"),
 190         @ResponseCode(code = 503, condition = "No providers available") })
 191     public Response createPorts(final NeutronPortRequest input) {
 192         INeutronPortCRUD portInterface = NeutronCRUDInterfaces.getINeutronPortCRUD(this);
 193         if (portInterface == null) {
 194             throw new ServiceUnavailableException("Port CRUD Interface "
 195                     + RestMessages.SERVICEUNAVAILABLE.toString());
 196         }
 197         INeutronNetworkCRUD networkInterface = NeutronCRUDInterfaces.getINeutronNetworkCRUD( this);
 198         if (networkInterface == null) {
 199             throw new ServiceUnavailableException("Network CRUD Interface "
 200                     + RestMessages.SERVICEUNAVAILABLE.toString());
 201         }
 202         INeutronSubnetCRUD subnetInterface = NeutronCRUDInterfaces.getINeutronSubnetCRUD( this);
 203         if (subnetInterface == null) {
 204             throw new ServiceUnavailableException("Subnet CRUD Interface "
 205                     + RestMessages.SERVICEUNAVAILABLE.toString());
 206         }
 207         if (input.isSingleton()) {
 208             NeutronPort singleton = input.getSingleton();
 209
 210             /*
 211              * the port must be part of an existing network, must not already exist,
 212              * have a valid MAC and the MAC not be in use
 213              */
 214             if (singleton.getNetworkUUID() == null) {
 215                 throw new BadRequestException("network UUID musy be specified");
 216             }
 217             if (portInterface.portExists(singleton.getID())) {
 218                 throw new BadRequestException("port UUID already exists");
 219             }
 220             if (!networkInterface.networkExists(singleton.getNetworkUUID())) {
 221                 throw new ResourceNotFoundException("network UUID does not exist.");
 222             }
 223             if (singleton.getMacAddress() == null ||
 224                     !singleton.getMacAddress().matches(mac_regex)) {
 225                 throw new BadRequestException("MAC address not properly formatted");
 226             }
 227             if (portInterface.macInUse(singleton.getMacAddress())) {
 228                 throw new ResourceConflictException("MAC Address is in use.");
 229             }
 230             /*
 231              * if fixed IPs are specified, each one has to have an existing subnet ID
 232              * that is in the same scoping network as the port.  In addition, if an IP
 233              * address is specified it has to be a valid address for the subnet and not
 234              * already in use
 235              */
 236             List<Neutron_IPs> fixedIPs = singleton.getFixedIPs();
 237             if (fixedIPs != null && fixedIPs.size() > 0) {
 238                 Iterator<Neutron_IPs> fixedIPIterator = fixedIPs.iterator();
 239                 while (fixedIPIterator.hasNext()) {
 240                     Neutron_IPs ip = fixedIPIterator.next();
 241                     if (ip.getSubnetUUID() == null) {
 242                         throw new BadRequestException("subnet UUID not specified");
 243                     }
 244                     if (!subnetInterface.subnetExists(ip.getSubnetUUID())) {
 245                         throw new BadRequestException("subnet UUID must exists");
 246                     }
 247                     NeutronSubnet subnet = subnetInterface.getSubnet(ip.getSubnetUUID());
 248                     if (!singleton.getNetworkUUID().equalsIgnoreCase(subnet.getNetworkUUID())) {
 249                         throw new BadRequestException("network UUID must match that of subnet");
 250                     }
 251                     if (ip.getIpAddress() != null) {
 252                         if (!subnet.isValidIP(ip.getIpAddress())) {
 253                             throw new BadRequestException("IP address is not valid");
 254                         }
 255                         if (subnet.isIPInUse(ip.getIpAddress())) {
 256                             throw new ResourceConflictException("IP address is in use.");
 257                         }
 258                     }
 259                 }
 260             }
 261
 262             Object[] instances = NeutronUtil.getInstances(INeutronPortAware.class, this);
 263             if (instances != null) {
 264                 if (instances.length > 0) {
 265                     for (Object instance : instances) {
 266                         INeutronPortAware service = (INeutronPortAware) instance;
 267                         int status = service.canCreatePort(singleton);
 268                         if (status < 200 || status > 299) {
 269                             return Response.status(status).build();
 270                         }
 271                     }
 272                 } else {
 273                     throw new ServiceUnavailableException("No providers registered.  Please try again later");
 274                 }
 275             } else {
 276                 throw new ServiceUnavailableException("Couldn't get providers list.  Please try again later");
 277             }
 278
 279             // add the port to the cache
 280             portInterface.addPort(singleton);
 281             if (instances != null) {
 282                 for (Object instance : instances) {
 283                     INeutronPortAware service = (INeutronPortAware) instance;
 284                     service.neutronPortCreated(singleton);
 285                 }
 286             }
 287         } else {
 288             List<NeutronPort> bulk = input.getBulk();
 289             Iterator<NeutronPort> i = bulk.iterator();
 290             HashMap<String, NeutronPort> testMap = new HashMap<String, NeutronPort>();
 291             Object[] instances = NeutronUtil.getInstances(INeutronPortAware.class, this);
 292             while (i.hasNext()) {
 293                 NeutronPort test = i.next();
 294
 295                 /*
 296                  * the port must be part of an existing network, must not already exist,
 297                  * have a valid MAC and the MAC not be in use.  Further the bulk request
 298                  * can't already contain a new port with the same UUID
 299                  */
 300                 if (portInterface.portExists(test.getID())) {
 301                     throw new BadRequestException("port UUID already exists");
 302                 }
 303                 if (testMap.containsKey(test.getID())) {
 304                     throw new BadRequestException("port UUID already exists");
 305                 }
 306                 for (NeutronPort check : testMap.values()) {
 307                     if (test.getMacAddress().equalsIgnoreCase(check.getMacAddress())) {
 308                         throw new ResourceConflictException("MAC address already allocated");
 309                     }
 310                     for (Neutron_IPs test_fixedIP : test.getFixedIPs()) {
 311                         for (Neutron_IPs check_fixedIP : check.getFixedIPs()) {
 312                             if (test_fixedIP.getSubnetUUID().equals(check_fixedIP.getSubnetUUID())) {
 313                                 if (test_fixedIP.getIpAddress().equals(check_fixedIP.getIpAddress())) {
 314                                     throw new ResourceConflictException("IP address already allocated");
 315                                 }
 316                             }
 317                         }
 318                     }
 319                 }
 320                 testMap.put(test.getID(), test);
 321                 if (!networkInterface.networkExists(test.getNetworkUUID())) {
 322                     throw new ResourceNotFoundException("network UUID does not exist.");
 323                 }
 324                 if (!test.getMacAddress().matches(mac_regex)) {
 325                     throw new BadRequestException("MAC address not properly formatted");
 326                 }
 327                 if (portInterface.macInUse(test.getMacAddress())) {
 328                     throw new ResourceConflictException("MAC address in use");
 329                 }
 330
 331                 /*
 332                  * if fixed IPs are specified, each one has to have an existing subnet ID
 333                  * that is in the same scoping network as the port.  In addition, if an IP
 334                  * address is specified it has to be a valid address for the subnet and not
 335                  * already in use (or be the gateway IP address of the subnet)
 336                  */
 337                 List<Neutron_IPs> fixedIPs = test.getFixedIPs();
 338                 if (fixedIPs != null && fixedIPs.size() > 0) {
 339                     Iterator<Neutron_IPs> fixedIPIterator = fixedIPs.iterator();
 340                     while (fixedIPIterator.hasNext()) {
 341                         Neutron_IPs ip = fixedIPIterator.next();
 342                         if (ip.getSubnetUUID() == null) {
 343                             throw new BadRequestException("subnet UUID must be specified");
 344                         }
 345                         if (!subnetInterface.subnetExists(ip.getSubnetUUID())) {
 346                             throw new BadRequestException("subnet UUID doesn't exists");
 347                         }
 348                         NeutronSubnet subnet = subnetInterface.getSubnet(ip.getSubnetUUID());
 349                         if (!test.getNetworkUUID().equalsIgnoreCase(subnet.getNetworkUUID())) {
 350                             throw new BadRequestException("network UUID must match that of subnet");
 351                         }
 352                         if (ip.getIpAddress() != null) {
 353                             if (!subnet.isValidIP(ip.getIpAddress())) {
 354                                 throw new BadRequestException("ip address not valid");
 355                             }
 356                             //TODO: need to add consideration for a fixed IP being assigned the same address as a allocated IP in the
 357                             //same bulk create
 358                             if (subnet.isIPInUse(ip.getIpAddress())) {
 359                                 throw new ResourceConflictException("IP address in use");
 360                             }
 361                         }
 362                     }
 363                 }
 364                 if (instances != null) {
 365                     if (instances.length > 0) {
 366                         for (Object instance : instances) {
 367                             INeutronPortAware service = (INeutronPortAware) instance;
 368                             int status = service.canCreatePort(test);
 369                             if (status < 200 || status > 299) {
 370                                 return Response.status(status).build();
 371                             }
 372                         }
 373                     } else {
 374                         throw new ServiceUnavailableException("No providers registered.  Please try again later");
 375                     }
 376                 } else {
 377                     throw new ServiceUnavailableException("Couldn't get providers list.  Please try again later");
 378                 }
 379             }
 380
 381             //once everything has passed, then we can add to the cache
 382             i = bulk.iterator();
 383             while (i.hasNext()) {
 384                 NeutronPort test = i.next();
 385                 portInterface.addPort(test);
 386                 if (instances != null) {
 387                     for (Object instance : instances) {
 388                         INeutronPortAware service = (INeutronPortAware) instance;
 389                         service.neutronPortCreated(test);
 390                     }
 391                 }
 392             }
 393         }
 394         return Response.status(201).entity(input).build();
 395     }
 396
 397     /**
 398      * Updates a Port */
 399
 400     @Path("{portUUID}")
 401     @PUT
 402     @Produces({ MediaType.APPLICATION_JSON })
 403     @Consumes({ MediaType.APPLICATION_JSON })
 404     //@TypeHint(OpenStackPorts.class)
 405     @StatusCodes({
 406         @ResponseCode(code = 200, condition = "Operation successful"),
 407         @ResponseCode(code = 400, condition = "Bad Request"),
 408         @ResponseCode(code = 401, condition = "Unauthorized"),
 409         @ResponseCode(code = 403, condition = "Forbidden"),
 410         @ResponseCode(code = 404, condition = "Not Found"),
 411         @ResponseCode(code = 409, condition = "Conflict"),
 412         @ResponseCode(code = 501, condition = "Not Implemented"),
 413         @ResponseCode(code = 503, condition = "No providers available") })
 414     public Response updatePort(
 415             @PathParam("portUUID") String portUUID,
 416             NeutronPortRequest input
 417             ) {
 418         INeutronPortCRUD portInterface = NeutronCRUDInterfaces.getINeutronPortCRUD(this);
 419         if (portInterface == null) {
 420             throw new ServiceUnavailableException("Port CRUD Interface "
 421                     + RestMessages.SERVICEUNAVAILABLE.toString());
 422         }
 423         INeutronSubnetCRUD subnetInterface = NeutronCRUDInterfaces.getINeutronSubnetCRUD( this);
 424         if (subnetInterface == null) {
 425             throw new ServiceUnavailableException("Subnet CRUD Interface "
 426                     + RestMessages.SERVICEUNAVAILABLE.toString());
 427         }
 428
 429         // port has to exist and only a single delta is supported
 430         if (!portInterface.portExists(portUUID)) {
 431             throw new ResourceNotFoundException("port UUID does not exist.");
 432         }
 433         NeutronPort target = portInterface.getPort(portUUID);
 434         if (!input.isSingleton()) {
 435             throw new BadRequestException("only singleton edit suported");
 436         }
 437         NeutronPort singleton = input.getSingleton();
 438         NeutronPort original = portInterface.getPort(portUUID);
 439
 440         // deltas restricted by Neutron
 441         if (singleton.getID() != null || singleton.getTenantID() != null ||
 442                 singleton.getStatus() != null) {
 443             throw new BadRequestException("attribute change blocked by Neutron");
 444         }
 445
 446         Object[] instances = NeutronUtil.getInstances(INeutronPortAware.class, this);
 447         if (instances != null) {
 448             if (instances.length > 0) {
 449                 for (Object instance : instances) {
 450                     INeutronPortAware service = (INeutronPortAware) instance;
 451                     int status = service.canUpdatePort(singleton, original);
 452                     if (status < 200 || status > 299) {
 453                         return Response.status(status).build();
 454                     }
 455                 }
 456             } else {
 457                 throw new ServiceUnavailableException("No providers registered.  Please try again later");
 458             }
 459         } else {
 460             throw new ServiceUnavailableException("Couldn't get providers list.  Please try again later");
 461         }
 462
 463         // Verify the new fixed ips are valid
 464         List<Neutron_IPs> fixedIPs = singleton.getFixedIPs();
 465         if (fixedIPs != null && fixedIPs.size() > 0) {
 466             Iterator<Neutron_IPs> fixedIPIterator = fixedIPs.iterator();
 467             while (fixedIPIterator.hasNext()) {
 468                 Neutron_IPs ip = fixedIPIterator.next();
 469                 if (ip.getSubnetUUID() == null) {
 470                     throw new BadRequestException("subnet UUID must be specified");
 471                 }
 472                 if (!subnetInterface.subnetExists(ip.getSubnetUUID())) {
 473                     throw new BadRequestException("subnet UUID doesn't exist.");
 474                 }
 475                 NeutronSubnet subnet = subnetInterface.getSubnet(ip.getSubnetUUID());
 476                 if (!target.getNetworkUUID().equalsIgnoreCase(subnet.getNetworkUUID())) {
 477                     throw new BadRequestException("network UUID must match that of subnet");
 478                 }
 479                 if (ip.getIpAddress() != null) {
 480                     if (!subnet.isValidIP(ip.getIpAddress())) {
 481                         throw new BadRequestException("invalid IP address");
 482                     }
 483                     if (subnet.isIPInUse(ip.getIpAddress())) {
 484                         throw new ResourceConflictException("IP address in use");
 485                     }
 486                 }
 487             }
 488         }
 489
 490         //        TODO: Support change of security groups
 491         // update the port and return the modified object
 492         portInterface.updatePort(portUUID, singleton);
 493         NeutronPort updatedPort = portInterface.getPort(portUUID);
 494         if (instances != null) {
 495             for (Object instance : instances) {
 496                 INeutronPortAware service = (INeutronPortAware) instance;
 497                 service.neutronPortUpdated(updatedPort);
 498             }
 499         }
 500         return Response.status(200).entity(
 501                 new NeutronPortRequest(updatedPort)).build();
 502
 503     }
 504
 505     /**
 506      * Deletes a Port */
 507
 508     @Path("{portUUID}")
 509     @DELETE
 510     @StatusCodes({
 511         @ResponseCode(code = 204, condition = "No Content"),
 512         @ResponseCode(code = 401, condition = "Unauthorized"),
 513         @ResponseCode(code = 403, condition = "Forbidden"),
 514         @ResponseCode(code = 404, condition = "Not Found"),
 515         @ResponseCode(code = 501, condition = "Not Implemented"),
 516         @ResponseCode(code = 503, condition = "No providers available") })
 517     public Response deletePort(
 518             @PathParam("portUUID") String portUUID) {
 519         INeutronPortCRUD portInterface = NeutronCRUDInterfaces.getINeutronPortCRUD(this);
 520         if (portInterface == null) {
 521             throw new ServiceUnavailableException("Port CRUD Interface "
 522                     + RestMessages.SERVICEUNAVAILABLE.toString());
 523         }
 524
 525         // port has to exist and not be owned by anyone.  then it can be removed from the cache
 526         if (!portInterface.portExists(portUUID)) {
 527             throw new ResourceNotFoundException("port UUID does not exist.");
 528         }
 529         NeutronPort port = portInterface.getPort(portUUID);
 530         if (port.getDeviceID() != null ||
 531                 port.getDeviceOwner() != null) {
 532             Response.status(403).build();
 533         }
 534         NeutronPort singleton = portInterface.getPort(portUUID);
 535         Object[] instances = NeutronUtil.getInstances(INeutronPortAware.class, this);
 536         if (instances != null) {
 537             if (instances.length > 0) {
 538                 for (Object instance : instances) {
 539                     INeutronPortAware service = (INeutronPortAware) instance;
 540                     int status = service.canDeletePort(singleton);
 541                     if (status < 200 || status > 299) {
 542                         return Response.status(status).build();
 543                     }
 544                 }
 545             } else {
 546                 throw new ServiceUnavailableException("No providers registered.  Please try again later");
 547             }
 548         } else {
 549             throw new ServiceUnavailableException("Couldn't get providers list.  Please try again later");
 550         }
 551         portInterface.removePort(portUUID);
 552         if (instances != null) {
 553             for (Object instance : instances) {
 554                 INeutronPortAware service = (INeutronPortAware) instance;
 555                 service.neutronPortDeleted(singleton);
 556             }
 557         }
 558         return Response.status(204).build();
 559     }
 560 }