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

   1 /*
   2  * Copyright (C) 2014 Red Hat, Inc.
   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 java.net.HttpURLConnection;
  12
  13 import java.util.ArrayList;
  14 import java.util.HashMap;
  15 import java.util.Iterator;
  16 import java.util.List;
  17
  18 import javax.ws.rs.Consumes;
  19 import javax.ws.rs.DELETE;
  20 import javax.ws.rs.GET;
  21 import javax.ws.rs.POST;
  22 import javax.ws.rs.PUT;
  23 import javax.ws.rs.Path;
  24 import javax.ws.rs.PathParam;
  25 import javax.ws.rs.Produces;
  26 import javax.ws.rs.QueryParam;
  27 import javax.ws.rs.core.MediaType;
  28 import javax.ws.rs.core.Response;
  29
  30 import org.codehaus.enunciate.jaxrs.ResponseCode;
  31 import org.codehaus.enunciate.jaxrs.StatusCodes;
  32 import org.opendaylight.neutron.spi.INeutronLoadBalancerHealthMonitorAware;
  33 import org.opendaylight.neutron.spi.INeutronLoadBalancerHealthMonitorCRUD;
  34 import org.opendaylight.neutron.spi.NeutronCRUDInterfaces;
  35 import org.opendaylight.neutron.spi.NeutronLoadBalancerHealthMonitor;
  36
  37 /**
  38  * Neutron Northbound REST APIs for Load Balancer HealthMonitor.<br>
  39  * This class provides REST APIs for managing neutron LoadBalancerHealthMonitor
  40  *
  41  * <br>
  42  * <br>
  43  * Authentication scheme : <b>HTTP Basic</b><br>
  44  * Authentication realm : <b>opendaylight</b><br>
  45  * Transport : <b>HTTP and HTTPS</b><br>
  46  * <br>
  47  * HTTPS Authentication is disabled by default. Administrator can enable it in
  48  * tomcat-server.xml after adding a proper keystore / SSL certificate from a
  49  * trusted authority.<br>
  50  * More info :
  51  * http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html#Configuration
  52  *
  53  */
  54 @Path("/lbaas/healthmonitors")
  55 public class NeutronLoadBalancerHealthMonitorNorthbound {
  56
  57     private static final int HTTP_OK_BOTTOM = 200;
  58     private static final int HTTP_OK_TOP = 299;
  59     private static final String INTERFACE_NAME = "LoadBalancerHealthMonitor CRUD Interface";
  60     private static final String UUID_NO_EXIST = "LoadBalancerHealthMonitor UUID does not exist.";
  61     private static final String NO_PROVIDERS = "No providers registered.  Please try again later";
  62     private static final String NO_PROVIDER_LIST = "Couldn't get providers list.  Please try again later";
  63
  64
  65     private NeutronLoadBalancerHealthMonitor extractFields(NeutronLoadBalancerHealthMonitor o, List<String> fields) {
  66         return o.extractFields(fields);
  67     }
  68
  69     /**
  70      * Returns a list of all LoadBalancerHealthMonitor */
  71     @GET
  72     @Produces({ MediaType.APPLICATION_JSON })
  73     @StatusCodes({
  74             @ResponseCode(code = HttpURLConnection.HTTP_OK, condition = "Operation successful"),
  75             @ResponseCode(code = HttpURLConnection.HTTP_UNAUTHORIZED, condition = "Unauthorized"),
  76             @ResponseCode(code = HttpURLConnection.HTTP_NOT_IMPLEMENTED, condition = "Not Implemented"),
  77             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
  78
  79     public Response listGroups(
  80             // return fields
  81             @QueryParam("fields") List<String> fields,
  82             // OpenStack LoadBalancerHealthMonitor attributes
  83             @QueryParam("id") String queryLoadBalancerHealthMonitorID,
  84             @QueryParam("tenant_id") String queryLoadBalancerHealthMonitorTenantID,
  85             // TODO "type" is being a property by the JSON parser.
  86             @QueryParam("type") String queryLoadBalancerHealthMonitorType,
  87             @QueryParam("delay") Integer queryLoadBalancerHealthMonitorDelay,
  88             @QueryParam("timeout") Integer queryLoadBalancerHealthMonitorTimeout,
  89             @QueryParam("max_retries") Integer queryLoadBalancerHealthMonitorMaxRetries,
  90             @QueryParam("http_method") String queryLoadBalancerHealthMonitorHttpMethod,
  91             @QueryParam("url_path") String queryLoadBalancerHealthMonitorUrlPath,
  92             @QueryParam("expected_codes") String queryLoadBalancerHealthMonitorExpectedCodes,
  93             @QueryParam("admin_state_up") Boolean queryLoadBalancerHealthMonitorIsAdminStateUp,
  94             // pagination
  95             @QueryParam("limit") String limit,
  96             @QueryParam("marker") String marker,
  97             @QueryParam("page_reverse") String pageReverse
  98             // sorting not supported
  99     ) {
 100         INeutronLoadBalancerHealthMonitorCRUD loadBalancerHealthMonitorInterface = NeutronCRUDInterfaces
 101                 .getINeutronLoadBalancerHealthMonitorCRUD(this);
 102         if (loadBalancerHealthMonitorInterface == null) {
 103             throw new ServiceUnavailableException(INTERFACE_NAME
 104                     + RestMessages.SERVICEUNAVAILABLE.toString());
 105         }
 106         List<NeutronLoadBalancerHealthMonitor> allLoadBalancerHealthMonitors = loadBalancerHealthMonitorInterface.getAllNeutronLoadBalancerHealthMonitors();
 107         List<NeutronLoadBalancerHealthMonitor> ans = new ArrayList<NeutronLoadBalancerHealthMonitor>();
 108         Iterator<NeutronLoadBalancerHealthMonitor> i = allLoadBalancerHealthMonitors.iterator();
 109         while (i.hasNext()) {
 110             NeutronLoadBalancerHealthMonitor nsg = i.next();
 111             if ((queryLoadBalancerHealthMonitorID == null ||
 112                     queryLoadBalancerHealthMonitorID.equals(nsg.getLoadBalancerHealthMonitorID())) &&
 113                     (queryLoadBalancerHealthMonitorTenantID == null ||
 114                             queryLoadBalancerHealthMonitorTenantID.equals
 115                                     (nsg.getLoadBalancerHealthMonitorTenantID())) &&
 116                     (queryLoadBalancerHealthMonitorType == null ||
 117                             queryLoadBalancerHealthMonitorType.equals
 118                                     (nsg.getLoadBalancerHealthMonitorType())) &&
 119                     (queryLoadBalancerHealthMonitorDelay == null ||
 120                             queryLoadBalancerHealthMonitorDelay.equals
 121                                     (nsg.getLoadBalancerHealthMonitorDelay())) &&
 122                     (queryLoadBalancerHealthMonitorTimeout == null ||
 123                             queryLoadBalancerHealthMonitorTimeout.equals
 124                                     (nsg.getLoadBalancerHealthMonitorTimeout())) &&
 125                     (queryLoadBalancerHealthMonitorMaxRetries == null ||
 126                             queryLoadBalancerHealthMonitorMaxRetries.equals
 127                                     (nsg.getLoadBalancerHealthMonitorMaxRetries())) &&
 128                     (queryLoadBalancerHealthMonitorHttpMethod == null ||
 129                             queryLoadBalancerHealthMonitorHttpMethod.equals
 130                                     (nsg.getLoadBalancerHealthMonitorHttpMethod())) &&
 131                     (queryLoadBalancerHealthMonitorUrlPath == null ||
 132                             queryLoadBalancerHealthMonitorUrlPath.equals
 133                                     (nsg.getLoadBalancerHealthMonitorUrlPath())) &&
 134                     (queryLoadBalancerHealthMonitorExpectedCodes == null ||
 135                             queryLoadBalancerHealthMonitorExpectedCodes.equals
 136                                     (nsg.getLoadBalancerHealthMonitorExpectedCodes())) &&
 137                     (queryLoadBalancerHealthMonitorIsAdminStateUp == null ||
 138                             queryLoadBalancerHealthMonitorIsAdminStateUp.equals
 139                                     (nsg.getLoadBalancerHealthMonitorAdminStateIsUp()))) {
 140                 if (fields.size() > 0) {
 141                     ans.add(extractFields(nsg,fields));
 142                 } else {
 143                     ans.add(nsg);
 144                 }
 145             }
 146         }
 147         return Response.status(HttpURLConnection.HTTP_OK).entity(
 148                 new NeutronLoadBalancerHealthMonitorRequest(ans)).build();
 149     }
 150
 151     /**
 152      * Returns a specific LoadBalancerHealthMonitor */
 153
 154     @Path("{loadBalancerHealthMonitorID}")
 155     @GET
 156     @Produces({ MediaType.APPLICATION_JSON })
 157     @StatusCodes({
 158             @ResponseCode(code = HttpURLConnection.HTTP_OK, condition = "Operation successful"),
 159             @ResponseCode(code = HttpURLConnection.HTTP_UNAUTHORIZED, condition = "Unauthorized"),
 160             @ResponseCode(code = HttpURLConnection.HTTP_NOT_FOUND, condition = "Not Found"),
 161             @ResponseCode(code = HttpURLConnection.HTTP_NOT_IMPLEMENTED, condition = "Not Implemented"),
 162             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
 163     public Response showLoadBalancerHealthMonitor(@PathParam("loadBalancerHealthMonitorID") String loadBalancerHealthMonitorID,
 164             // return fields
 165             @QueryParam("fields") List<String> fields) {
 166         INeutronLoadBalancerHealthMonitorCRUD loadBalancerHealthMonitorInterface = NeutronCRUDInterfaces.getINeutronLoadBalancerHealthMonitorCRUD(this);
 167         if (loadBalancerHealthMonitorInterface == null) {
 168             throw new ServiceUnavailableException(INTERFACE_NAME
 169                     + RestMessages.SERVICEUNAVAILABLE.toString());
 170         }
 171         if (!loadBalancerHealthMonitorInterface.neutronLoadBalancerHealthMonitorExists(loadBalancerHealthMonitorID)) {
 172             throw new ResourceNotFoundException(UUID_NO_EXIST);
 173         }
 174         if (fields.size() > 0) {
 175             NeutronLoadBalancerHealthMonitor ans = loadBalancerHealthMonitorInterface.getNeutronLoadBalancerHealthMonitor(loadBalancerHealthMonitorID);
 176             return Response.status(HttpURLConnection.HTTP_OK).entity(
 177                     new NeutronLoadBalancerHealthMonitorRequest(extractFields(ans, fields))).build();
 178         } else {
 179             return Response.status(HttpURLConnection.HTTP_OK).entity(new NeutronLoadBalancerHealthMonitorRequest(loadBalancerHealthMonitorInterface.getNeutronLoadBalancerHealthMonitor(loadBalancerHealthMonitorID))).build();
 180         }
 181     }
 182
 183     /**
 184      * Creates new LoadBalancerHealthMonitor */
 185
 186     @POST
 187     @Produces({ MediaType.APPLICATION_JSON })
 188     @Consumes({ MediaType.APPLICATION_JSON })
 189     @StatusCodes({
 190             @ResponseCode(code = HttpURLConnection.HTTP_CREATED, condition = "Created"),
 191             @ResponseCode(code = HttpURLConnection.HTTP_BAD_REQUEST, condition = "Bad Request"),
 192             @ResponseCode(code = HttpURLConnection.HTTP_UNAUTHORIZED, condition = "Unauthorized"),
 193             @ResponseCode(code = HttpURLConnection.HTTP_FORBIDDEN, condition = "Forbidden"),
 194             @ResponseCode(code = HttpURLConnection.HTTP_NOT_FOUND, condition = "Not Found"),
 195             @ResponseCode(code = HttpURLConnection.HTTP_CONFLICT, condition = "Conflict"),
 196             @ResponseCode(code = HttpURLConnection.HTTP_NOT_IMPLEMENTED, condition = "Not Implemented"),
 197             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
 198     public Response createLoadBalancerHealthMonitors(final NeutronLoadBalancerHealthMonitorRequest input) {
 199         INeutronLoadBalancerHealthMonitorCRUD loadBalancerHealthMonitorInterface = NeutronCRUDInterfaces.getINeutronLoadBalancerHealthMonitorCRUD(this);
 200         if (loadBalancerHealthMonitorInterface == null) {
 201             throw new ServiceUnavailableException(INTERFACE_NAME
 202                     + RestMessages.SERVICEUNAVAILABLE.toString());
 203         }
 204         if (input.isSingleton()) {
 205             NeutronLoadBalancerHealthMonitor singleton = input.getSingleton();
 206
 207             /*
 208              *  Verify that the LoadBalancerHealthMonitor doesn't already exist.
 209              */
 210             if (loadBalancerHealthMonitorInterface.neutronLoadBalancerHealthMonitorExists(singleton.getLoadBalancerHealthMonitorID())) {
 211                 throw new BadRequestException("LoadBalancerHealthMonitor UUID already exists");
 212             }
 213
 214             Object[] instances = NeutronUtil.getInstances(INeutronLoadBalancerHealthMonitorAware.class, this);
 215             if (instances != null) {
 216                 if (instances.length > 0) {
 217                     for (Object instance : instances) {
 218                         INeutronLoadBalancerHealthMonitorAware service = (INeutronLoadBalancerHealthMonitorAware) instance;
 219                         int status = service.canCreateNeutronLoadBalancerHealthMonitor(singleton);
 220                         if (status < HTTP_OK_BOTTOM || status > HTTP_OK_TOP) {
 221                             return Response.status(status).build();
 222                         }
 223                     }
 224                 } else {
 225                     throw new ServiceUnavailableException(NO_PROVIDERS);
 226                 }
 227             } else {
 228                 throw new ServiceUnavailableException(NO_PROVIDER_LIST);
 229             }
 230             loadBalancerHealthMonitorInterface.addNeutronLoadBalancerHealthMonitor(singleton);
 231             if (instances != null) {
 232                 for (Object instance : instances) {
 233                     INeutronLoadBalancerHealthMonitorAware service = (INeutronLoadBalancerHealthMonitorAware) instance;
 234                     service.neutronLoadBalancerHealthMonitorCreated(singleton);
 235                 }
 236             }
 237         } else {
 238             List<NeutronLoadBalancerHealthMonitor> bulk = input.getBulk();
 239             Iterator<NeutronLoadBalancerHealthMonitor> i = bulk.iterator();
 240             HashMap<String, NeutronLoadBalancerHealthMonitor> testMap = new HashMap<String, NeutronLoadBalancerHealthMonitor>();
 241             Object[] instances = NeutronUtil.getInstances(INeutronLoadBalancerHealthMonitorAware.class, this);
 242             while (i.hasNext()) {
 243                 NeutronLoadBalancerHealthMonitor test = i.next();
 244
 245                 /*
 246                  *  Verify that the firewall policy doesn't already exist
 247                  */
 248
 249                 if (loadBalancerHealthMonitorInterface
 250                         .neutronLoadBalancerHealthMonitorExists(test.getLoadBalancerHealthMonitorID())) {
 251                     throw new BadRequestException("LoadBalancerHealthMonitor UUID already is already created");
 252                 }
 253                 if (testMap.containsKey(test.getLoadBalancerHealthMonitorID())) {
 254                     throw new BadRequestException("LoadBalancerHealthMonitor UUID already exists");
 255                 }
 256                 if (instances != null) {
 257                     if (instances.length > 0) {
 258                         for (Object instance : instances) {
 259                             INeutronLoadBalancerHealthMonitorAware service = (INeutronLoadBalancerHealthMonitorAware) instance;
 260                             int status = service.canCreateNeutronLoadBalancerHealthMonitor(test);
 261                             if (status < HTTP_OK_BOTTOM || status > HTTP_OK_TOP) {
 262                                 return Response.status(status).build();
 263                             }
 264                         }
 265                     } else {
 266                         throw new ServiceUnavailableException(NO_PROVIDERS);
 267                     }
 268                 } else {
 269                     throw new ServiceUnavailableException(NO_PROVIDER_LIST);
 270                 }
 271             }
 272             /*
 273              * now, each element of the bulk request can be added to the cache
 274              */
 275             i = bulk.iterator();
 276             while (i.hasNext()) {
 277                 NeutronLoadBalancerHealthMonitor test = i.next();
 278                 loadBalancerHealthMonitorInterface.addNeutronLoadBalancerHealthMonitor(test);
 279                 if (instances != null) {
 280                     for (Object instance : instances) {
 281                         INeutronLoadBalancerHealthMonitorAware service = (INeutronLoadBalancerHealthMonitorAware) instance;
 282                         service.neutronLoadBalancerHealthMonitorCreated(test);
 283                     }
 284                 }
 285             }
 286         }
 287         return Response.status(HttpURLConnection.HTTP_CREATED).entity(input).build();
 288     }
 289
 290     /**
 291      * Updates a LoadBalancerHealthMonitor Policy
 292      */
 293     @Path("{loadBalancerHealthMonitorID}")
 294     @PUT
 295     @Produces({ MediaType.APPLICATION_JSON })
 296     @Consumes({ MediaType.APPLICATION_JSON })
 297     @StatusCodes({
 298             @ResponseCode(code = HttpURLConnection.HTTP_OK, condition = "Operation successful"),
 299             @ResponseCode(code = HttpURLConnection.HTTP_BAD_REQUEST, condition = "Bad Request"),
 300             @ResponseCode(code = HttpURLConnection.HTTP_UNAUTHORIZED, condition = "Unauthorized"),
 301             @ResponseCode(code = HttpURLConnection.HTTP_FORBIDDEN, condition = "Forbidden"),
 302             @ResponseCode(code = HttpURLConnection.HTTP_NOT_FOUND, condition = "Not Found"),
 303             @ResponseCode(code = HttpURLConnection.HTTP_NOT_IMPLEMENTED, condition = "Not Implemented"),
 304             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
 305     public Response updateLoadBalancerHealthMonitor(
 306             @PathParam("loadBalancerHealthMonitorID") String loadBalancerHealthMonitorID,
 307             final NeutronLoadBalancerHealthMonitorRequest input) {
 308         INeutronLoadBalancerHealthMonitorCRUD loadBalancerHealthMonitorInterface = NeutronCRUDInterfaces
 309                 .getINeutronLoadBalancerHealthMonitorCRUD(this);
 310         if (loadBalancerHealthMonitorInterface == null) {
 311             throw new ServiceUnavailableException(INTERFACE_NAME
 312                     + RestMessages.SERVICEUNAVAILABLE.toString());
 313         }
 314
 315         /*
 316          * verify the LoadBalancerHealthMonitor exists and there is only one delta provided
 317          */
 318         if (!loadBalancerHealthMonitorInterface.neutronLoadBalancerHealthMonitorExists(loadBalancerHealthMonitorID)) {
 319             throw new ResourceNotFoundException(UUID_NO_EXIST);
 320         }
 321         if (!input.isSingleton()) {
 322             throw new BadRequestException("Only singleton edit supported");
 323         }
 324         NeutronLoadBalancerHealthMonitor delta = input.getSingleton();
 325         NeutronLoadBalancerHealthMonitor original = loadBalancerHealthMonitorInterface
 326                 .getNeutronLoadBalancerHealthMonitor(loadBalancerHealthMonitorID);
 327
 328         /*
 329          * updates restricted by Neutron
 330          */
 331         if (delta.getLoadBalancerHealthMonitorID() != null ||
 332                 delta.getLoadBalancerHealthMonitorTenantID() != null ||
 333                 delta.getLoadBalancerHealthMonitorType() != null ||
 334                 delta.getLoadBalancerHealthMonitorDelay() != null ||
 335                 delta.getLoadBalancerHealthMonitorTimeout() != null ||
 336                 delta.getLoadBalancerHealthMonitorMaxRetries() != null ||
 337                 delta.getLoadBalancerHealthMonitorHttpMethod() != null ||
 338                 delta.getLoadBalancerHealthMonitorUrlPath() != null ||
 339                 delta.getLoadBalancerHealthMonitorExpectedCodes() != null ||
 340                 delta.getLoadBalancerHealthMonitorAdminStateIsUp() != null) {
 341             throw new BadRequestException("Attribute edit blocked by Neutron");
 342         }
 343
 344         Object[] instances = NeutronUtil.getInstances(INeutronLoadBalancerHealthMonitorAware.class, this);
 345         if (instances != null) {
 346             if (instances.length > 0) {
 347                 for (Object instance : instances) {
 348                     INeutronLoadBalancerHealthMonitorAware service = (INeutronLoadBalancerHealthMonitorAware) instance;
 349                     int status = service.canUpdateNeutronLoadBalancerHealthMonitor(delta, original);
 350                     if (status < HTTP_OK_BOTTOM || status > HTTP_OK_TOP) {
 351                         return Response.status(status).build();
 352                     }
 353                 }
 354             } else {
 355                 throw new ServiceUnavailableException(NO_PROVIDERS);
 356             }
 357         } else {
 358             throw new ServiceUnavailableException(NO_PROVIDER_LIST);
 359         }
 360
 361         /*
 362          * update the object and return it
 363          */
 364         loadBalancerHealthMonitorInterface.updateNeutronLoadBalancerHealthMonitor(loadBalancerHealthMonitorID, delta);
 365         NeutronLoadBalancerHealthMonitor updatedLoadBalancerHealthMonitor = loadBalancerHealthMonitorInterface
 366                 .getNeutronLoadBalancerHealthMonitor(loadBalancerHealthMonitorID);
 367         if (instances != null) {
 368             for (Object instance : instances) {
 369                 INeutronLoadBalancerHealthMonitorAware service = (INeutronLoadBalancerHealthMonitorAware) instance;
 370                 service.neutronLoadBalancerHealthMonitorUpdated(updatedLoadBalancerHealthMonitor);
 371             }
 372         }
 373         return Response.status(HttpURLConnection.HTTP_OK).entity(new NeutronLoadBalancerHealthMonitorRequest
 374                 (loadBalancerHealthMonitorInterface.getNeutronLoadBalancerHealthMonitor
 375                         (loadBalancerHealthMonitorID))).build();
 376     }
 377
 378
 379
 380     /**
 381      * Deletes a LoadBalancerHealthMonitor
 382      * */
 383     @Path("{loadBalancerHealthMonitorID}")
 384     @DELETE
 385     @StatusCodes({
 386             @ResponseCode(code = HttpURLConnection.HTTP_NO_CONTENT, condition = "No Content"),
 387             @ResponseCode(code = HttpURLConnection.HTTP_UNAUTHORIZED, condition = "Unauthorized"),
 388             @ResponseCode(code = HttpURLConnection.HTTP_NOT_FOUND, condition = "Not Found"),
 389             @ResponseCode(code = HttpURLConnection.HTTP_CONFLICT, condition = "Conflict"),
 390             @ResponseCode(code = HttpURLConnection.HTTP_NOT_IMPLEMENTED, condition = "Not Implemented"),
 391             @ResponseCode(code = HttpURLConnection.HTTP_UNAVAILABLE, condition = "No providers available") })
 392     public Response deleteLoadBalancerHealthMonitor(
 393             @PathParam("loadBalancerHealthMonitorID") String loadBalancerHealthMonitorID) {
 394         INeutronLoadBalancerHealthMonitorCRUD loadBalancerHealthMonitorInterface = NeutronCRUDInterfaces.getINeutronLoadBalancerHealthMonitorCRUD(this);
 395         if (loadBalancerHealthMonitorInterface == null) {
 396             throw new ServiceUnavailableException(INTERFACE_NAME
 397                     + RestMessages.SERVICEUNAVAILABLE.toString());
 398         }
 399         /*
 400          * verify the LoadBalancerHealthMonitor exists and it isn't currently in use
 401          */
 402         if (!loadBalancerHealthMonitorInterface.neutronLoadBalancerHealthMonitorExists(loadBalancerHealthMonitorID)) {
 403             throw new ResourceNotFoundException(UUID_NO_EXIST);
 404         }
 405         if (loadBalancerHealthMonitorInterface.neutronLoadBalancerHealthMonitorInUse(loadBalancerHealthMonitorID)) {
 406             return Response.status(HttpURLConnection.HTTP_CONFLICT).build();
 407         }
 408         NeutronLoadBalancerHealthMonitor singleton = loadBalancerHealthMonitorInterface.getNeutronLoadBalancerHealthMonitor(loadBalancerHealthMonitorID);
 409         Object[] instances = NeutronUtil.getInstances(INeutronLoadBalancerHealthMonitorAware.class, this);
 410         if (instances != null) {
 411             if (instances.length > 0) {
 412                 for (Object instance : instances) {
 413                     INeutronLoadBalancerHealthMonitorAware service = (INeutronLoadBalancerHealthMonitorAware) instance;
 414                     int status = service.canDeleteNeutronLoadBalancerHealthMonitor(singleton);
 415                     if (status < HTTP_OK_BOTTOM || status > HTTP_OK_TOP) {
 416                         return Response.status(status).build();
 417                     }
 418                 }
 419             } else {
 420                 throw new ServiceUnavailableException(NO_PROVIDERS);
 421             }
 422         } else {
 423             throw new ServiceUnavailableException(NO_PROVIDER_LIST);
 424         }
 425         loadBalancerHealthMonitorInterface.removeNeutronLoadBalancerHealthMonitor(loadBalancerHealthMonitorID);
 426         if (instances != null) {
 427             for (Object instance : instances) {
 428                 INeutronLoadBalancerHealthMonitorAware service = (INeutronLoadBalancerHealthMonitorAware) instance;
 429                 service.neutronLoadBalancerHealthMonitorDeleted(singleton);
 430             }
 431         }
 432         return Response.status(HttpURLConnection.HTTP_NO_CONTENT).build();
 433     }
 434 }