models-interactions/model-actors/actorServiceProvider/src/test/java/org/onap/policy/controlloop/actorserviceprovider/impl/HttpOperationTest.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP
   4  * ================================================================================
   5  * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.policy.controlloop.actorserviceprovider.impl;
  22
  23 import static org.assertj.core.api.Assertions.assertThat;
  24 import static org.assertj.core.api.Assertions.assertThatCode;
  25 import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
  26 import static org.assertj.core.api.Assertions.assertThatThrownBy;
  27 import static org.junit.Assert.assertEquals;
  28 import static org.junit.Assert.assertFalse;
  29 import static org.junit.Assert.assertNotNull;
  30 import static org.junit.Assert.assertSame;
  31 import static org.junit.Assert.assertTrue;
  32 import static org.mockito.ArgumentMatchers.any;
  33 import static org.mockito.Mockito.when;
  34
  35 import java.util.Collections;
  36 import java.util.Map;
  37 import java.util.Properties;
  38 import java.util.UUID;
  39 import java.util.concurrent.CancellationException;
  40 import java.util.concurrent.CompletableFuture;
  41 import java.util.concurrent.ExecutionException;
  42 import java.util.concurrent.Executor;
  43 import java.util.concurrent.Future;
  44 import java.util.concurrent.TimeUnit;
  45 import java.util.concurrent.TimeoutException;
  46 import java.util.concurrent.atomic.AtomicReference;
  47 import javax.ws.rs.Consumes;
  48 import javax.ws.rs.DELETE;
  49 import javax.ws.rs.GET;
  50 import javax.ws.rs.POST;
  51 import javax.ws.rs.PUT;
  52 import javax.ws.rs.Path;
  53 import javax.ws.rs.Produces;
  54 import javax.ws.rs.client.Entity;
  55 import javax.ws.rs.client.InvocationCallback;
  56 import javax.ws.rs.core.MediaType;
  57 import javax.ws.rs.core.Response;
  58 import javax.ws.rs.core.Response.Status;
  59 import lombok.Getter;
  60 import lombok.Setter;
  61 import org.junit.AfterClass;
  62 import org.junit.Before;
  63 import org.junit.BeforeClass;
  64 import org.junit.Test;
  65 import org.mockito.Mock;
  66 import org.mockito.MockitoAnnotations;
  67 import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
  68 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
  69 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams.TopicParamsBuilder;
  70 import org.onap.policy.common.endpoints.http.client.HttpClient;
  71 import org.onap.policy.common.endpoints.http.client.HttpClientFactory;
  72 import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
  73 import org.onap.policy.common.endpoints.http.server.HttpServletServer;
  74 import org.onap.policy.common.endpoints.http.server.HttpServletServerFactoryInstance;
  75 import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
  76 import org.onap.policy.common.endpoints.utils.NetLoggerUtil.EventType;
  77 import org.onap.policy.common.gson.GsonMessageBodyHandler;
  78 import org.onap.policy.common.utils.coder.CoderException;
  79 import org.onap.policy.common.utils.network.NetworkUtil;
  80 import org.onap.policy.controlloop.VirtualControlLoopEvent;
  81 import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
  82 import org.onap.policy.controlloop.actorserviceprovider.controlloop.ControlLoopEventContext;
  83 import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
  84 import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpConfig;
  85 import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpParams;
  86 import org.onap.policy.controlloop.policy.PolicyResult;
  87
  88 public class HttpOperationTest {
  89
  90     private static final IllegalStateException EXPECTED_EXCEPTION = new IllegalStateException("expected exception");
  91     private static final String ACTOR = "my-actor";
  92     private static final String OPERATION = "my-name";
  93     private static final String HTTP_CLIENT = "my-client";
  94     private static final String HTTP_NO_SERVER = "my-http-no-server-client";
  95     private static final String MEDIA_TYPE_APPLICATION_JSON = "application/json";
  96     private static final String BASE_URI = "oper";
  97     private static final String PATH = "/my-path";
  98     private static final String TEXT = "my-text";
  99     private static final UUID REQ_ID = UUID.randomUUID();
 100
 101     /**
 102      * {@code True} if the server should reject the request, {@code false} otherwise.
 103      */
 104     private static boolean rejectRequest;
 105
 106     // call counts of each method type in the server
 107     private static int nget;
 108     private static int npost;
 109     private static int nput;
 110     private static int ndelete;
 111
 112     @Mock
 113     private HttpClient client;
 114     @Mock
 115     private HttpClientFactory clientFactory;
 116     @Mock
 117     private Response response;
 118     @Mock
 119     private Executor executor;
 120
 121     private VirtualControlLoopEvent event;
 122     private ControlLoopEventContext context;
 123     private ControlLoopOperationParams params;
 124     private OperationOutcome outcome;
 125     private AtomicReference<InvocationCallback<Response>> callback;
 126     private Future<Response> future;
 127     private HttpConfig config;
 128     private MyGetOperation<String> oper;
 129
 130     /**
 131      * Starts the simulator.
 132      */
 133     @BeforeClass
 134     public static void setUpBeforeClass() throws Exception {
 135         // allocate a port
 136         int port = NetworkUtil.allocPort();
 137
 138         /*
 139          * Start the simulator. Must use "Properties" to configure it, otherwise the
 140          * server will use the wrong serialization provider.
 141          */
 142         Properties svrprops = getServerProperties("my-server", port);
 143         HttpServletServerFactoryInstance.getServerFactory().build(svrprops).forEach(HttpServletServer::start);
 144
 145         if (!NetworkUtil.isTcpPortOpen("localhost", port, 100, 100)) {
 146             HttpServletServerFactoryInstance.getServerFactory().destroy();
 147             throw new IllegalStateException("server is not running");
 148         }
 149
 150         /*
 151          * Start the clients, one to the server, and one to a non-existent server.
 152          */
 153         TopicParamsBuilder builder = BusTopicParams.builder().managed(true).hostname("localhost").basePath(BASE_URI)
 154                         .serializationProvider(GsonMessageBodyHandler.class.getName());
 155
 156         HttpClientFactoryInstance.getClientFactory().build(builder.clientName(HTTP_CLIENT).port(port).build());
 157
 158         HttpClientFactoryInstance.getClientFactory()
 159                         .build(builder.clientName(HTTP_NO_SERVER).port(NetworkUtil.allocPort()).build());
 160     }
 161
 162     /**
 163      * Destroys the Http factories and stops the appender.
 164      */
 165     @AfterClass
 166     public static void tearDownAfterClass() {
 167         HttpClientFactoryInstance.getClientFactory().destroy();
 168         HttpServletServerFactoryInstance.getServerFactory().destroy();
 169     }
 170
 171     /**
 172      * Initializes fields, including {@link #oper}, and resets the static fields used by
 173      * the REST server.
 174      */
 175     @Before
 176     public void setUp() {
 177         MockitoAnnotations.initMocks(this);
 178
 179         rejectRequest = false;
 180         nget = 0;
 181         npost = 0;
 182         nput = 0;
 183         ndelete = 0;
 184
 185         when(response.readEntity(String.class)).thenReturn(TEXT);
 186         when(response.getStatus()).thenReturn(200);
 187
 188         event = new VirtualControlLoopEvent();
 189         event.setRequestId(REQ_ID);
 190
 191         context = new ControlLoopEventContext(event);
 192         params = ControlLoopOperationParams.builder().actor(ACTOR).operation(OPERATION).context(context).build();
 193
 194         outcome = params.makeOutcome();
 195
 196         callback = new AtomicReference<>();
 197         future = new CompletableFuture<>();
 198
 199         when(clientFactory.get(any())).thenReturn(client);
 200
 201         initConfig(HTTP_CLIENT);
 202
 203         oper = new MyGetOperation<>(String.class);
 204     }
 205
 206     @Test
 207     public void testHttpOperator() {
 208         assertEquals(ACTOR, oper.getActorName());
 209         assertEquals(OPERATION, oper.getName());
 210         assertEquals(ACTOR + "." + OPERATION, oper.getFullName());
 211     }
 212
 213     @Test
 214     public void testMakeHeaders() {
 215         assertEquals(Collections.emptyMap(), oper.makeHeaders());
 216     }
 217
 218     @Test
 219     public void testMakePath() {
 220         assertEquals(PATH, oper.makePath());
 221     }
 222
 223     @Test
 224     public void testMakeUrl() {
 225         // use a real client
 226         initRealConfig(HTTP_CLIENT);
 227
 228         oper = new MyGetOperation<>(String.class);
 229
 230         assertThat(oper.makeUrl()).endsWith("/" + BASE_URI + PATH);
 231     }
 232
 233     @Test
 234     public void testDoConfigureMapOfStringObject_testGetClient_testGetPath_testGetTimeoutMs() {
 235
 236         // use value from operator
 237         assertEquals(1000L, oper.getTimeoutMs(null));
 238         assertEquals(1000L, oper.getTimeoutMs(0));
 239
 240         // should use given value
 241         assertEquals(20 * 1000L, oper.getTimeoutMs(20));
 242     }
 243
 244     /**
 245      * Tests handleResponse() when it completes.
 246      */
 247     @Test
 248     public void testHandleResponseComplete() throws Exception {
 249         CompletableFuture<OperationOutcome> future2 = oper.handleResponse(outcome, PATH, cb -> {
 250             callback.set(cb);
 251             return future;
 252         });
 253
 254         assertFalse(future2.isDone());
 255         assertNotNull(callback.get());
 256         callback.get().completed(response);
 257
 258         assertSame(outcome, future2.get(5, TimeUnit.SECONDS));
 259
 260         assertEquals(PolicyResult.SUCCESS, outcome.getResult());
 261     }
 262
 263     /**
 264      * Tests handleResponse() when it fails.
 265      */
 266     @Test
 267     public void testHandleResponseFailed() throws Exception {
 268         CompletableFuture<OperationOutcome> future2 = oper.handleResponse(outcome, PATH, cb -> {
 269             callback.set(cb);
 270             return future;
 271         });
 272
 273         assertFalse(future2.isDone());
 274         assertNotNull(callback.get());
 275         callback.get().failed(EXPECTED_EXCEPTION);
 276
 277         assertThatThrownBy(() -> future2.get(5, TimeUnit.SECONDS)).hasCause(EXPECTED_EXCEPTION);
 278
 279         // future and future2 may be completed in parallel so we must wait again
 280         assertThatThrownBy(() -> future.get(5, TimeUnit.SECONDS)).isInstanceOf(CancellationException.class);
 281         assertTrue(future.isCancelled());
 282     }
 283
 284     /**
 285      * Tests processResponse() when it's a success and the response type is a String.
 286      */
 287     @Test
 288     public void testProcessResponseSuccessString() throws Exception {
 289         CompletableFuture<OperationOutcome> result = oper.processResponse(outcome, PATH, response);
 290         assertTrue(result.isDone());
 291         assertSame(outcome, result.get());
 292         assertEquals(PolicyResult.SUCCESS, outcome.getResult());
 293     }
 294
 295     /**
 296      * Tests processResponse() when it's a failure.
 297      */
 298     @Test
 299     public void testProcessResponseFailure() throws Exception {
 300         when(response.getStatus()).thenReturn(555);
 301         CompletableFuture<OperationOutcome> result = oper.processResponse(outcome, PATH, response);
 302         assertTrue(result.isDone());
 303         assertSame(outcome, result.get());
 304         assertEquals(PolicyResult.FAILURE, outcome.getResult());
 305     }
 306
 307     /**
 308      * Tests processResponse() when the decoder succeeds.
 309      */
 310     @Test
 311     public void testProcessResponseDecodeOk() throws Exception {
 312         when(response.readEntity(String.class)).thenReturn("10");
 313
 314         MyGetOperation<Integer> oper2 = new MyGetOperation<>(Integer.class);
 315
 316         CompletableFuture<OperationOutcome> result = oper2.processResponse(outcome, PATH, response);
 317         assertTrue(result.isDone());
 318         assertSame(outcome, result.get());
 319         assertEquals(PolicyResult.SUCCESS, outcome.getResult());
 320     }
 321
 322     /**
 323      * Tests processResponse() when the decoder throws an exception.
 324      */
 325     @Test
 326     public void testProcessResponseDecodeExcept() throws CoderException {
 327         MyGetOperation<Integer> oper2 = new MyGetOperation<>(Integer.class);
 328
 329         assertThatIllegalArgumentException().isThrownBy(() -> oper2.processResponse(outcome, PATH, response));
 330     }
 331
 332     @Test
 333     public void testPostProcessResponse() {
 334         assertThatCode(() -> oper.postProcessResponse(outcome, PATH, null, null)).doesNotThrowAnyException();
 335     }
 336
 337     @Test
 338     public void testIsSuccess() {
 339         when(response.getStatus()).thenReturn(200);
 340         assertTrue(oper.isSuccess(response, null));
 341
 342         when(response.getStatus()).thenReturn(555);
 343         assertFalse(oper.isSuccess(response, null));
 344     }
 345
 346     /**
 347      * Tests a GET.
 348      */
 349     @Test
 350     public void testGet() throws Exception {
 351         // use a real client
 352         initRealConfig(HTTP_CLIENT);
 353
 354         MyGetOperation<MyResponse> oper2 = new MyGetOperation<>(MyResponse.class);
 355
 356         OperationOutcome outcome = runOperation(oper2);
 357         assertNotNull(outcome);
 358         assertEquals(1, nget);
 359         assertEquals(PolicyResult.SUCCESS, outcome.getResult());
 360     }
 361
 362     /**
 363      * Tests a DELETE.
 364      */
 365     @Test
 366     public void testDelete() throws Exception {
 367         // use a real client
 368         initRealConfig(HTTP_CLIENT);
 369
 370         MyDeleteOperation oper2 = new MyDeleteOperation();
 371
 372         OperationOutcome outcome = runOperation(oper2);
 373         assertNotNull(outcome);
 374         assertEquals(1, ndelete);
 375         assertEquals(PolicyResult.SUCCESS, outcome.getResult());
 376     }
 377
 378     /**
 379      * Tests a POST.
 380      */
 381     @Test
 382     public void testPost() throws Exception {
 383         // use a real client
 384         initRealConfig(HTTP_CLIENT);
 385         MyPostOperation oper2 = new MyPostOperation();
 386
 387         OperationOutcome outcome = runOperation(oper2);
 388         assertNotNull(outcome);
 389         assertEquals(1, npost);
 390         assertEquals(PolicyResult.SUCCESS, outcome.getResult());
 391     }
 392
 393     /**
 394      * Tests a PUT.
 395      */
 396     @Test
 397     public void testPut() throws Exception {
 398         // use a real client
 399         initRealConfig(HTTP_CLIENT);
 400
 401         MyPutOperation oper2 = new MyPutOperation();
 402
 403         OperationOutcome outcome = runOperation(oper2);
 404         assertNotNull(outcome);
 405         assertEquals(1, nput);
 406         assertEquals(PolicyResult.SUCCESS, outcome.getResult());
 407     }
 408
 409     @Test
 410     public void testMakeDecoder() {
 411         assertNotNull(oper.makeCoder());
 412     }
 413
 414     /**
 415      * Gets server properties.
 416      *
 417      * @param name server name
 418      * @param port server port
 419      * @return server properties
 420      */
 421     private static Properties getServerProperties(String name, int port) {
 422         final Properties props = new Properties();
 423         props.setProperty(PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES, name);
 424
 425         final String svcpfx = PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES + "." + name;
 426
 427         props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_REST_CLASSES_SUFFIX, Server.class.getName());
 428         props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_HOST_SUFFIX, "localhost");
 429         props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_PORT_SUFFIX, String.valueOf(port));
 430         props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX, "true");
 431         props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_SWAGGER_SUFFIX, "false");
 432
 433         props.setProperty(svcpfx + PolicyEndPointProperties.PROPERTY_HTTP_SERIALIZATION_PROVIDER,
 434                         GsonMessageBodyHandler.class.getName());
 435         return props;
 436     }
 437
 438     /**
 439      * Initializes the configuration.
 440      *
 441      * @param operator operator to be initialized
 442      * @param clientName name of the client which it should use
 443      */
 444     private void initConfig(String clientName) {
 445         initConfig(clientName, clientFactory);
 446     }
 447
 448     /**
 449      * Initializes the configuration with a real client.
 450      *
 451      * @param operator operator to be initialized
 452      * @param clientName name of the client which it should use
 453      */
 454     private void initConfig(String clientName, HttpClientFactory factory) {
 455         HttpParams params = HttpParams.builder().clientName(clientName).path(PATH).timeoutSec(1).build();
 456         config = new HttpConfig(executor, params, factory);
 457     }
 458
 459     /**
 460      * Initializes the configuration with a real client.
 461      *
 462      * @param operator operator to be initialized
 463      * @param clientName name of the client which it should use
 464      */
 465     private void initRealConfig(String clientName) {
 466         initConfig(clientName, HttpClientFactoryInstance.getClientFactory());
 467     }
 468
 469     /**
 470      * Runs the operation.
 471      *
 472      * @param operator operator on which to start the operation
 473      * @return the outcome of the operation, or {@code null} if it does not complete in
 474      *         time
 475      */
 476     private <T> OperationOutcome runOperation(HttpOperation<T> operator)
 477                     throws InterruptedException, ExecutionException, TimeoutException {
 478
 479         CompletableFuture<OperationOutcome> future = operator.start();
 480
 481         return future.get(5, TimeUnit.SECONDS);
 482     }
 483
 484     @Getter
 485     @Setter
 486     public static class MyRequest {
 487         private String input = "some input";
 488     }
 489
 490     @Getter
 491     @Setter
 492     public static class MyResponse {
 493         private String output = "some output";
 494     }
 495
 496     private class MyGetOperation<T> extends HttpOperation<T> {
 497         public MyGetOperation(Class<T> responseClass) {
 498             super(HttpOperationTest.this.params, HttpOperationTest.this.config, responseClass);
 499         }
 500
 501         @Override
 502         protected CompletableFuture<OperationOutcome> startOperationAsync(int attempt, OperationOutcome outcome) {
 503             Map<String, Object> headers = makeHeaders();
 504
 505             headers.put("Accept", MediaType.APPLICATION_JSON);
 506             String url = makeUrl();
 507
 508             logMessage(EventType.OUT, CommInfrastructure.REST, url, null);
 509
 510             // @formatter:off
 511             return handleResponse(outcome, url,
 512                 callback -> getClient().get(callback, makePath(), headers));
 513             // @formatter:on
 514         }
 515     }
 516
 517     private class MyPostOperation extends HttpOperation<MyResponse> {
 518         public MyPostOperation() {
 519             super(HttpOperationTest.this.params, HttpOperationTest.this.config, MyResponse.class);
 520         }
 521
 522         @Override
 523         protected CompletableFuture<OperationOutcome> startOperationAsync(int attempt, OperationOutcome outcome) {
 524
 525             MyRequest request = new MyRequest();
 526
 527             Entity<MyRequest> entity = Entity.entity(request, MediaType.APPLICATION_JSON);
 528
 529             Map<String, Object> headers = makeHeaders();
 530
 531             headers.put("Accept", MediaType.APPLICATION_JSON);
 532             String url = makeUrl();
 533
 534             logMessage(EventType.OUT, CommInfrastructure.REST, url, request);
 535
 536             // @formatter:off
 537             return handleResponse(outcome, url,
 538                 callback -> getClient().post(callback, makePath(), entity, headers));
 539             // @formatter:on
 540         }
 541     }
 542
 543     private class MyPutOperation extends HttpOperation<MyResponse> {
 544         public MyPutOperation() {
 545             super(HttpOperationTest.this.params, HttpOperationTest.this.config, MyResponse.class);
 546         }
 547
 548         @Override
 549         protected CompletableFuture<OperationOutcome> startOperationAsync(int attempt, OperationOutcome outcome) {
 550
 551             MyRequest request = new MyRequest();
 552
 553             Entity<MyRequest> entity = Entity.entity(request, MediaType.APPLICATION_JSON);
 554
 555             Map<String, Object> headers = makeHeaders();
 556
 557             headers.put("Accept", MediaType.APPLICATION_JSON);
 558             String url = makeUrl();
 559
 560             logMessage(EventType.OUT, CommInfrastructure.REST, url, request);
 561
 562             // @formatter:off
 563             return handleResponse(outcome, url,
 564                 callback -> getClient().put(callback, makePath(), entity, headers));
 565             // @formatter:on
 566         }
 567     }
 568
 569     private class MyDeleteOperation extends HttpOperation<String> {
 570         public MyDeleteOperation() {
 571             super(HttpOperationTest.this.params, HttpOperationTest.this.config, String.class);
 572         }
 573
 574         @Override
 575         protected CompletableFuture<OperationOutcome> startOperationAsync(int attempt, OperationOutcome outcome) {
 576             Map<String, Object> headers = makeHeaders();
 577
 578             headers.put("Accept", MediaType.APPLICATION_JSON);
 579             String url = makeUrl();
 580
 581             logMessage(EventType.OUT, CommInfrastructure.REST, url, null);
 582
 583             // @formatter:off
 584             return handleResponse(outcome, url,
 585                 callback -> getClient().delete(callback, makePath(), headers));
 586             // @formatter:on
 587         }
 588     }
 589
 590     /**
 591      * Simulator.
 592      */
 593     @Path("/" + BASE_URI)
 594     @Produces(MEDIA_TYPE_APPLICATION_JSON)
 595     @Consumes(value = {MEDIA_TYPE_APPLICATION_JSON})
 596     public static class Server {
 597
 598         /**
 599          * Generates a response to a GET.
 600          *
 601          * @return resulting response
 602          */
 603         @GET
 604         @Path(PATH)
 605         public Response getRequest() {
 606             ++nget;
 607
 608             if (rejectRequest) {
 609                 return Response.status(Status.BAD_REQUEST).build();
 610
 611             } else {
 612                 return Response.status(Status.OK).entity(new MyResponse()).build();
 613             }
 614         }
 615
 616         /**
 617          * Generates a response to a POST.
 618          *
 619          * @param request incoming request
 620          * @return resulting response
 621          */
 622         @POST
 623         @Path(PATH)
 624         public Response postRequest(MyRequest request) {
 625             ++npost;
 626
 627             if (rejectRequest) {
 628                 return Response.status(Status.BAD_REQUEST).build();
 629
 630             } else {
 631                 return Response.status(Status.OK).entity(new MyResponse()).build();
 632             }
 633         }
 634
 635         /**
 636          * Generates a response to a PUT.
 637          *
 638          * @param request incoming request
 639          * @return resulting response
 640          */
 641         @PUT
 642         @Path(PATH)
 643         public Response putRequest(MyRequest request) {
 644             ++nput;
 645
 646             if (rejectRequest) {
 647                 return Response.status(Status.BAD_REQUEST).build();
 648
 649             } else {
 650                 return Response.status(Status.OK).entity(new MyResponse()).build();
 651             }
 652         }
 653
 654         /**
 655          * Generates a response to a DELETE.
 656          *
 657          * @return resulting response
 658          */
 659         @DELETE
 660         @Path(PATH)
 661         public Response deleteRequest() {
 662             ++ndelete;
 663
 664             if (rejectRequest) {
 665                 return Response.status(Status.BAD_REQUEST).build();
 666
 667             } else {
 668                 return Response.status(Status.OK).entity(new MyResponse()).build();
 669             }
 670         }
 671     }
 672 }