policy-agent/src/test/java/org/oransc/policyagent/ApplicationTest.java

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * O-RAN-SC
   4  * %%
   5  * Copyright (C) 2019 Nordix Foundation
   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.oransc.policyagent;
  22
  23 import static org.assertj.core.api.Assertions.assertThat;
  24 import static org.awaitility.Awaitility.await;
  25 import static org.junit.jupiter.api.Assertions.assertEquals;
  26 import static org.junit.jupiter.api.Assertions.assertTrue;
  27 import static org.mockito.ArgumentMatchers.any;
  28 import static org.mockito.Mockito.doReturn;
  29
  30 import com.google.gson.Gson;
  31 import com.google.gson.GsonBuilder;
  32 import com.google.gson.JsonArray;
  33 import com.google.gson.JsonElement;
  34 import com.google.gson.JsonParser;
  35
  36 import java.nio.charset.StandardCharsets;
  37 import java.time.Duration;
  38 import java.time.Instant;
  39 import java.util.ArrayList;
  40 import java.util.List;
  41 import java.util.concurrent.atomic.AtomicInteger;
  42
  43 import org.junit.jupiter.api.AfterEach;
  44 import org.junit.jupiter.api.BeforeEach;
  45 import org.junit.jupiter.api.Test;
  46 import org.junit.jupiter.api.extension.ExtendWith;
  47 import org.oransc.policyagent.clients.AsyncRestClient;
  48 import org.oransc.policyagent.configuration.ApplicationConfig;
  49 import org.oransc.policyagent.configuration.ImmutableRicConfig;
  50 import org.oransc.policyagent.configuration.RicConfig;
  51 import org.oransc.policyagent.controllers.PolicyInfo;
  52 import org.oransc.policyagent.controllers.ServiceRegistrationInfo;
  53 import org.oransc.policyagent.controllers.ServiceStatus;
  54 import org.oransc.policyagent.exceptions.ServiceException;
  55 import org.oransc.policyagent.repository.ImmutablePolicy;
  56 import org.oransc.policyagent.repository.ImmutablePolicyType;
  57 import org.oransc.policyagent.repository.Lock.LockType;
  58 import org.oransc.policyagent.repository.Policies;
  59 import org.oransc.policyagent.repository.Policy;
  60 import org.oransc.policyagent.repository.PolicyType;
  61 import org.oransc.policyagent.repository.PolicyTypes;
  62 import org.oransc.policyagent.repository.Ric;
  63 import org.oransc.policyagent.repository.Ric.RicState;
  64 import org.oransc.policyagent.repository.Rics;
  65 import org.oransc.policyagent.repository.Services;
  66 import org.oransc.policyagent.tasks.RicSupervision;
  67 import org.oransc.policyagent.tasks.ServiceSupervision;
  68 import org.oransc.policyagent.utils.MockA1Client;
  69 import org.oransc.policyagent.utils.MockA1ClientFactory;
  70 import org.slf4j.Logger;
  71 import org.slf4j.LoggerFactory;
  72 import org.springframework.beans.factory.annotation.Autowired;
  73 import org.springframework.boot.test.context.SpringBootTest;
  74 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
  75 import org.springframework.boot.test.context.TestConfiguration;
  76 import org.springframework.boot.web.server.LocalServerPort;
  77 import org.springframework.context.ApplicationContext;
  78 import org.springframework.context.annotation.Bean;
  79 import org.springframework.http.HttpEntity;
  80 import org.springframework.http.HttpHeaders;
  81 import org.springframework.http.HttpStatus;
  82 import org.springframework.http.MediaType;
  83 import org.springframework.http.ResponseEntity;
  84 import org.springframework.test.context.junit.jupiter.SpringExtension;
  85 import org.springframework.web.client.RestTemplate;
  86 import org.springframework.web.reactive.function.client.WebClientResponseException;
  87
  88 import reactor.core.publisher.Mono;
  89 import reactor.test.StepVerifier;
  90 import reactor.util.annotation.Nullable;
  91
  92 @ExtendWith(SpringExtension.class)
  93 @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
  94 public class ApplicationTest {
  95     private static final Logger logger = LoggerFactory.getLogger(ApplicationTest.class);
  96
  97     @Autowired
  98     ApplicationContext context;
  99
 100     @Autowired
 101     private Rics rics;
 102
 103     @Autowired
 104     private Policies policies;
 105
 106     @Autowired
 107     private PolicyTypes policyTypes;
 108
 109     @Autowired
 110     MockA1ClientFactory a1ClientFactory;
 111
 112     @Autowired
 113     RicSupervision supervision;
 114
 115     @Autowired
 116     Services services;
 117
 118     private static Gson gson = new GsonBuilder() //
 119         .serializeNulls() //
 120         .create(); //
 121
 122     public static class MockApplicationConfig extends ApplicationConfig {
 123         @Override
 124         public String getLocalConfigurationFilePath() {
 125             return ""; // No config file loaded for the test
 126         }
 127     }
 128
 129     /**
 130      * Overrides the BeanFactory.
 131      */
 132     @TestConfiguration
 133     static class TestBeanFactory {
 134         private final PolicyTypes policyTypes = new PolicyTypes();
 135         private final Services services = new Services();
 136         private final Policies policies = new Policies();
 137         MockA1ClientFactory a1ClientFactory = null;
 138
 139         @Bean
 140         public ApplicationConfig getApplicationConfig() {
 141             return new MockApplicationConfig();
 142         }
 143
 144         @Bean
 145         MockA1ClientFactory getA1ClientFactory() {
 146             if (a1ClientFactory == null) {
 147                 this.a1ClientFactory = new MockA1ClientFactory(this.policyTypes);
 148             }
 149             return this.a1ClientFactory;
 150         }
 151
 152         @Bean
 153         public PolicyTypes getPolicyTypes() {
 154             return this.policyTypes;
 155         }
 156
 157         @Bean
 158         Policies getPolicies() {
 159             return this.policies;
 160         }
 161
 162         @Bean
 163         Services getServices() {
 164             return this.services;
 165         }
 166
 167         @Bean
 168         public ServiceSupervision getServiceSupervision() {
 169             Duration checkInterval = Duration.ofMillis(1);
 170             return new ServiceSupervision(this.services, this.policies, this.getA1ClientFactory(), checkInterval);
 171         }
 172     }
 173
 174     @LocalServerPort
 175     private int port;
 176
 177     @BeforeEach
 178     public void reset() {
 179         rics.clear();
 180         policies.clear();
 181         policyTypes.clear();
 182         services.clear();
 183     }
 184
 185     @AfterEach
 186     public void verifyNoRicLocks() {
 187         for (Ric ric : this.rics.getRics()) {
 188             ric.getLock().lockBlocking(LockType.EXCLUSIVE);
 189             ric.getLock().unlockBlocking();
 190             assertThat(ric.getLock().getLockCounter()).isEqualTo(0);
 191             assertThat(ric.getState()).isEqualTo(Ric.RicState.IDLE);
 192         }
 193     }
 194
 195     @Test
 196     public void testGetRics() throws Exception {
 197         addRic("ric1");
 198         this.addPolicyType("type1", "ric1");
 199         String url = "/rics?policyType=type1";
 200         String rsp = restClient().get(url).block();
 201         assertThat(rsp).contains("ric1");
 202
 203         // nameless type for ORAN A1 1.1
 204         addRic("ric2");
 205         this.addPolicyType("", "ric2");
 206         url = "/rics?policyType=";
 207         rsp = restClient().get(url).block();
 208         assertThat(rsp).contains("ric2");
 209         assertThat(rsp).doesNotContain("ric1");
 210
 211         // Non existing policy type
 212         url = "/rics?policyType=XXXX";
 213         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 214     }
 215
 216     @Test
 217     public void testSynchronization() throws Exception {
 218         addRic("ric").setState(Ric.RicState.UNDEFINED);
 219         String ricName = "ric";
 220         Policy policy2 = addPolicy("policyId2", "typeName", "service", ricName);
 221
 222         getA1Client(ricName).putPolicy(policy2); // put it in the RIC
 223         policies.remove(policy2); // Remove it from the repo -> should be deleted in the RIC
 224
 225         String policyId = "policyId";
 226         Policy policy = addPolicy(policyId, "typeName", "service", ricName); // This should be created in the RIC
 227         supervision.checkAllRics(); // The created policy should be put in the RIC
 228         await().untilAsserted(() -> RicState.SYNCHRONIZING.equals(rics.getRic(ricName).getState()));
 229         await().untilAsserted(() -> RicState.IDLE.equals(rics.getRic(ricName).getState()));
 230
 231         Policies ricPolicies = getA1Client(ricName).getPolicies();
 232         assertThat(ricPolicies.size()).isEqualTo(1);
 233         Policy ricPolicy = ricPolicies.get(policyId);
 234         assertThat(ricPolicy.json()).isEqualTo(policy.json());
 235     }
 236
 237     @Test
 238     public void testGetRicForManagedElement_thenReturnCorrectRic() throws Exception {
 239         String ricName = "ric1";
 240         String managedElementId = "kista_1";
 241         addRic(ricName, managedElementId);
 242
 243         String url = "/ric?managedElementId=" + managedElementId;
 244         String rsp = restClient().get(url).block();
 245         assertThat(rsp).isEqualTo(ricName);
 246
 247         // test GET RIC for ManagedElement that does not exist
 248         url = "/ric?managedElementId=" + "junk";
 249         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 250     }
 251
 252     private String putPolicyUrl(String serviceName, String ricName, String policyTypeName, String policyInstanceId) {
 253         if (policyTypeName.isEmpty()) {
 254             return "/policy?instance=" + policyInstanceId + "&ric=" + ricName + "&service=" + serviceName;
 255         } else {
 256             return "/policy?instance=" + policyInstanceId + "&ric=" + ricName + "&service=" + serviceName + "&type="
 257                 + policyTypeName;
 258         }
 259     }
 260
 261     @Test
 262     public void testPutPolicy() throws Exception {
 263         String serviceName = "service1";
 264         String ricName = "ric1";
 265         String policyTypeName = "type1";
 266         String policyInstanceId = "instance1";
 267
 268         putService(serviceName);
 269         addPolicyType(policyTypeName, ricName);
 270
 271         String url = putPolicyUrl(serviceName, ricName, policyTypeName, policyInstanceId);
 272         final String policyBody = jsonString();
 273         this.rics.getRic(ricName).setState(Ric.RicState.IDLE);
 274
 275         restClient().put(url, policyBody).block();
 276
 277         Policy policy = policies.getPolicy(policyInstanceId);
 278         assertThat(policy).isNotNull();
 279         assertThat(policy.id()).isEqualTo(policyInstanceId);
 280         assertThat(policy.ownerServiceName()).isEqualTo(serviceName);
 281         assertThat(policy.ric().name()).isEqualTo("ric1");
 282
 283         url = "/policies";
 284         String rsp = restClient().get(url).block();
 285         assertThat(rsp.contains(policyInstanceId)).isTrue();
 286
 287         // Test of error codes
 288         url = putPolicyUrl(serviceName, ricName + "XX", policyTypeName, policyInstanceId);
 289         testErrorCode(restClient().put(url, policyBody), HttpStatus.NOT_FOUND);
 290
 291         url = putPolicyUrl(serviceName, ricName, policyTypeName + "XX", policyInstanceId);
 292         testErrorCode(restClient().put(url, policyBody), HttpStatus.NOT_FOUND);
 293
 294         url = putPolicyUrl(serviceName, ricName, policyTypeName, policyInstanceId);
 295         this.rics.getRic(ricName).setState(Ric.RicState.SYNCHRONIZING);
 296         testErrorCode(restClient().put(url, policyBody), HttpStatus.LOCKED);
 297         this.rics.getRic(ricName).setState(Ric.RicState.IDLE);
 298     }
 299
 300     @Test
 301     /**
 302      * Test that HttpStatus and body from failing REST call to A1 is passed on to
 303      * the caller.
 304      *
 305      * @throws ServiceException
 306      */
 307     public void testErrorFromRIC() throws ServiceException {
 308         putService("service1");
 309         addPolicyType("type1", "ric1");
 310
 311         String url = putPolicyUrl("service1", "ric1", "type1", "id1");
 312         MockA1Client a1Client = a1ClientFactory.getOrCreateA1Client("ric1");
 313         HttpStatus httpStatus = HttpStatus.INTERNAL_SERVER_ERROR;
 314         String responseBody = "Refused";
 315         byte[] responseBodyBytes = responseBody.getBytes(StandardCharsets.UTF_8);
 316
 317         WebClientResponseException a1Exception = new WebClientResponseException(httpStatus.value(), "statusText", null,
 318             responseBodyBytes, StandardCharsets.UTF_8, null);
 319         doReturn(Mono.error(a1Exception)).when(a1Client).putPolicy(any());
 320
 321         // PUT Policy
 322         testErrorCode(restClient().put(url, "{}"), httpStatus, responseBody);
 323
 324         // DELETE POLICY
 325         this.addPolicy("instance1", "type1", "service1", "ric1");
 326         doReturn(Mono.error(a1Exception)).when(a1Client).deletePolicy(any());
 327         testErrorCode(restClient().delete("/policy?instance=instance1"), httpStatus, responseBody);
 328
 329         // GET STATUS
 330         this.addPolicy("instance1", "type1", "service1", "ric1");
 331         doReturn(Mono.error(a1Exception)).when(a1Client).getPolicyStatus(any());
 332         testErrorCode(restClient().get("/policy_status?instance=instance1"), httpStatus, responseBody);
 333
 334         // Check that empty response body is OK
 335         a1Exception = new WebClientResponseException(httpStatus.value(), "", null, null, null, null);
 336         doReturn(Mono.error(a1Exception)).when(a1Client).getPolicyStatus(any());
 337         testErrorCode(restClient().get("/policy_status?instance=instance1"), httpStatus);
 338     }
 339
 340     @Test
 341     public void testPutTypelessPolicy() throws Exception {
 342         putService("service1");
 343         addPolicyType("", "ric1");
 344         String url = putPolicyUrl("service1", "ric1", "", "id1");
 345         restClient().put(url, jsonString()).block();
 346
 347         String rsp = restClient().get("/policies").block();
 348         List<PolicyInfo> info = parseList(rsp, PolicyInfo.class);
 349         assertThat(info).size().isEqualTo(1);
 350         PolicyInfo policyInfo = info.get(0);
 351         assertThat(policyInfo.id.equals("id1")).isTrue();
 352         assertThat(policyInfo.type.equals("")).isTrue();
 353     }
 354
 355     @Test
 356     public void testRefuseToUpdatePolicy() throws Exception {
 357         // Test that only the json can be changed for a already created policy
 358         // In this case service is attempted to be changed
 359         this.addRic("ric1");
 360         this.addRic("ricXXX");
 361         this.addPolicy("instance1", "type1", "service1", "ric1");
 362
 363         // Try change ric1 -> ricXXX
 364         String urlWrongRic = putPolicyUrl("service1", "ricXXX", "type1", "instance1");
 365         testErrorCode(restClient().put(urlWrongRic, jsonString()), HttpStatus.CONFLICT);
 366     }
 367
 368     @Test
 369     public void testGetPolicy() throws Exception {
 370         String url = "/policy?instance=id";
 371         Policy policy = addPolicy("id", "typeName", "service1", "ric1");
 372         {
 373             String rsp = restClient().get(url).block();
 374             assertThat(rsp).isEqualTo(policy.json());
 375         }
 376         {
 377             policies.remove(policy);
 378             testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 379         }
 380     }
 381
 382     @Test
 383     public void testDeletePolicy() throws Exception {
 384         addPolicy("id", "typeName", "service1", "ric1");
 385         assertThat(policies.size()).isEqualTo(1);
 386
 387         String url = "/policy?instance=id";
 388         ResponseEntity<String> entity = restClient().deleteForEntity(url).block();
 389
 390         assertThat(entity.getStatusCode()).isEqualTo(HttpStatus.NO_CONTENT);
 391         assertThat(policies.size()).isEqualTo(0);
 392
 393         // Delete a non existing policy
 394         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 395     }
 396
 397     @Test
 398     public void testGetPolicySchemas() throws Exception {
 399         addPolicyType("type1", "ric1");
 400         addPolicyType("type2", "ric2");
 401
 402         String url = "/policy_schemas";
 403         String rsp = this.restClient().get(url).block();
 404         assertThat(rsp).contains("type1");
 405         assertThat(rsp).contains("[{\"title\":\"type2\"}");
 406
 407         List<String> info = parseSchemas(rsp);
 408         assertThat(info.size()).isEqualTo(2);
 409
 410         url = "/policy_schemas?ric=ric1";
 411         rsp = restClient().get(url).block();
 412         assertThat(rsp).contains("type1");
 413         info = parseSchemas(rsp);
 414         assertThat(info.size()).isEqualTo(1);
 415
 416         // Get schema for non existing RIC
 417         url = "/policy_schemas?ric=ric1XXX";
 418         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 419     }
 420
 421     @Test
 422     public void testGetPolicySchema() throws Exception {
 423         addPolicyType("type1", "ric1");
 424         addPolicyType("type2", "ric2");
 425
 426         String url = "/policy_schema?id=type1";
 427         String rsp = restClient().get(url).block();
 428         logger.info(rsp);
 429         assertThat(rsp).contains("type1");
 430         assertThat(rsp).contains("title");
 431
 432         // Get non existing schema
 433         url = "/policy_schema?id=type1XX";
 434         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 435     }
 436
 437     @Test
 438     public void testGetPolicyTypes() throws Exception {
 439         addPolicyType("type1", "ric1");
 440         addPolicyType("type2", "ric2");
 441
 442         String url = "/policy_types";
 443         String rsp = restClient().get(url).block();
 444         assertThat(rsp).isEqualTo("[\"type2\",\"type1\"]");
 445
 446         url = "/policy_types?ric=ric1";
 447         rsp = restClient().get(url).block();
 448         assertThat(rsp).isEqualTo("[\"type1\"]");
 449
 450         // Get policy types for non existing RIC
 451         url = "/policy_types?ric=ric1XXX";
 452         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 453     }
 454
 455     @Test
 456     public void testGetPolicies() throws Exception {
 457         reset();
 458         addPolicy("id1", "type1", "service1");
 459
 460         String url = "/policies";
 461         String rsp = restClient().get(url).block();
 462         logger.info(rsp);
 463         List<PolicyInfo> info = parseList(rsp, PolicyInfo.class);
 464         assertThat(info).size().isEqualTo(1);
 465         PolicyInfo policyInfo = info.get(0);
 466         assert (policyInfo.validate());
 467         assertThat(policyInfo.id).isEqualTo("id1");
 468         assertThat(policyInfo.type).isEqualTo("type1");
 469         assertThat(policyInfo.service).isEqualTo("service1");
 470     }
 471
 472     @Test
 473     public void testGetPoliciesFilter() throws Exception {
 474         addPolicy("id1", "type1", "service1");
 475         addPolicy("id2", "type1", "service2");
 476         addPolicy("id3", "type2", "service1");
 477
 478         String url = "/policies?type=type1";
 479         String rsp = restClient().get(url).block();
 480         logger.info(rsp);
 481         assertThat(rsp).contains("id1");
 482         assertThat(rsp).contains("id2");
 483         assertThat(rsp.contains("id3")).isFalse();
 484
 485         url = "/policies?type=type1&service=service2";
 486         rsp = restClient().get(url).block();
 487         logger.info(rsp);
 488         assertThat(rsp.contains("id1")).isFalse();
 489         assertThat(rsp).contains("id2");
 490         assertThat(rsp.contains("id3")).isFalse();
 491
 492         // Test get policies for non existing type
 493         url = "/policies?type=type1XXX";
 494         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 495
 496         // Test get policies for non existing RIC
 497         url = "/policies?ric=XXX";
 498         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 499     }
 500
 501     @Test
 502     public void testGetPolicyIdsFilter() throws Exception {
 503         addPolicy("id1", "type1", "service1", "ric1");
 504         addPolicy("id2", "type1", "service2", "ric1");
 505         addPolicy("id3", "type2", "service1", "ric1");
 506
 507         String url = "/policy_ids?type=type1";
 508         String rsp = restClient().get(url).block();
 509         logger.info(rsp);
 510         assertThat(rsp).contains("id1");
 511         assertThat(rsp).contains("id2");
 512         assertThat(rsp.contains("id3")).isFalse();
 513
 514         url = "/policy_ids?type=type1&service=service1&ric=ric1";
 515         rsp = restClient().get(url).block();
 516         assertThat(rsp).isEqualTo("[\"id1\"]");
 517
 518         // Test get policy ids for non existing type
 519         url = "/policy_ids?type=type1XXX";
 520         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 521
 522         // Test get policy ids for non existing RIC
 523         url = "/policy_ids?ric=XXX";
 524         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 525     }
 526
 527     @Test
 528     public void testPutAndGetService() throws Exception {
 529         // PUT
 530         putService("name", 0, HttpStatus.CREATED);
 531         putService("name", 0, HttpStatus.OK);
 532
 533         // GET one service
 534         String url = "/services?name=name";
 535         String rsp = restClient().get(url).block();
 536         List<ServiceStatus> info = parseList(rsp, ServiceStatus.class);
 537         assertThat(info.size()).isEqualTo(1);
 538         ServiceStatus status = info.iterator().next();
 539         assertThat(status.keepAliveIntervalSeconds).isEqualTo(0);
 540         assertThat(status.serviceName).isEqualTo("name");
 541
 542         // GET (all)
 543         url = "/services";
 544         rsp = restClient().get(url).block();
 545         assertThat(rsp.contains("name")).isTrue();
 546         logger.info(rsp);
 547
 548         // Keep alive
 549         url = "/services/keepalive?name=name";
 550         ResponseEntity<String> entity = restClient().postForEntity(url, null).block();
 551         assertThat(entity.getStatusCode()).isEqualTo(HttpStatus.OK);
 552
 553         // DELETE service
 554         assertThat(services.size()).isEqualTo(1);
 555         url = "/services?name=name";
 556         restClient().delete(url).block();
 557         assertThat(services.size()).isEqualTo(0);
 558
 559         // Keep alive, no registerred service
 560         testErrorCode(restClient().post("/services/keepalive?name=name", ""), HttpStatus.NOT_FOUND);
 561
 562         // PUT servive with crap payload
 563         testErrorCode(restClient().put("/service", "crap"), HttpStatus.BAD_REQUEST);
 564         testErrorCode(restClient().put("/service", "{}"), HttpStatus.BAD_REQUEST);
 565
 566         // GET non existing servive
 567         testErrorCode(restClient().get("/services?name=XXX"), HttpStatus.NOT_FOUND);
 568     }
 569
 570     @Test
 571     public void testServiceSupervision() throws Exception {
 572         putService("service1", 1, HttpStatus.CREATED);
 573         addPolicyType("type1", "ric1");
 574
 575         String url = putPolicyUrl("service1", "ric1", "type1", "instance1");
 576         final String policyBody = jsonString();
 577         restClient().put(url, policyBody).block();
 578
 579         assertThat(policies.size()).isEqualTo(1);
 580         assertThat(services.size()).isEqualTo(1);
 581
 582         // Timeout after ~1 second
 583         await().untilAsserted(() -> assertThat(policies.size()).isEqualTo(0));
 584         assertThat(services.size()).isEqualTo(0);
 585     }
 586
 587     @Test
 588     public void testGetPolicyStatus() throws Exception {
 589         addPolicy("id", "typeName", "service1", "ric1");
 590         assertThat(policies.size()).isEqualTo(1);
 591
 592         String url = "/policy_status?instance=id";
 593         String rsp = restClient().get(url).block();
 594         assertThat(rsp.equals("OK")).isTrue();
 595
 596         // GET non existing policy status
 597         url = "/policy_status?instance=XXX";
 598         testErrorCode(restClient().get(url), HttpStatus.NOT_FOUND);
 599     }
 600
 601     private Policy addPolicy(String id, String typeName, String service, String ric) throws ServiceException {
 602         addRic(ric);
 603         Policy p = ImmutablePolicy.builder().id(id) //
 604             .json(jsonString()) //
 605             .ownerServiceName(service) //
 606             .ric(rics.getRic(ric)) //
 607             .type(addPolicyType(typeName, ric)) //
 608             .lastModified("lastModified").build();
 609         policies.put(p);
 610         return p;
 611     }
 612
 613     private Policy addPolicy(String id, String typeName, String service) throws ServiceException {
 614         return addPolicy(id, typeName, service, "ric");
 615     }
 616
 617     private String createServiceJson(String name, long keepAliveIntervalSeconds) {
 618         ServiceRegistrationInfo service = new ServiceRegistrationInfo(name, keepAliveIntervalSeconds, "callbackUrl");
 619
 620         String json = gson.toJson(service);
 621         return json;
 622     }
 623
 624     private void putService(String name) {
 625         putService(name, 0, null);
 626     }
 627
 628     private void putService(String name, long keepAliveIntervalSeconds, @Nullable HttpStatus expectedStatus) {
 629         String url = "/service";
 630         String body = createServiceJson(name, keepAliveIntervalSeconds);
 631         ResponseEntity<String> resp = restClient().putForEntity(url, body).block();
 632         if (expectedStatus != null) {
 633             assertEquals(expectedStatus, resp.getStatusCode(), "");
 634         }
 635     }
 636
 637     private String baseUrl() {
 638         return "http://localhost:" + port;
 639     }
 640
 641     private String jsonString() {
 642         return "{\n  \"servingCellNrcgi\": \"1\"\n }";
 643     }
 644
 645     private static class ConcurrencyTestRunnable implements Runnable {
 646         private final RestTemplate restTemplate = new RestTemplate();
 647         private final String baseUrl;
 648         static AtomicInteger nextCount = new AtomicInteger(0);
 649         private final int count;
 650         private final RicSupervision supervision;
 651
 652         ConcurrencyTestRunnable(String baseUrl, RicSupervision supervision) {
 653             this.baseUrl = baseUrl;
 654             this.count = nextCount.incrementAndGet();
 655             this.supervision = supervision;
 656         }
 657
 658         @Override
 659         public void run() {
 660             for (int i = 0; i < 100; ++i) {
 661                 if (i % 10 == 0) {
 662                     this.supervision.checkAllRics();
 663                 }
 664                 String name = "policy:" + count + ":" + i;
 665                 putPolicy(name);
 666                 deletePolicy(name);
 667             }
 668         }
 669
 670         private void putPolicy(String name) {
 671             String putUrl = baseUrl + "/policy?type=type1&instance=" + name + "&ric=ric1&service=service1";
 672             restTemplate.put(putUrl, createJsonHttpEntity("{}"));
 673         }
 674
 675         private void deletePolicy(String name) {
 676             String deleteUrl = baseUrl + "/policy?instance=" + name;
 677             restTemplate.delete(deleteUrl);
 678         }
 679     }
 680
 681     @Test
 682     public void testConcurrency() throws Exception {
 683         final Instant startTime = Instant.now();
 684         List<Thread> threads = new ArrayList<>();
 685         addRic("ric1");
 686         addPolicyType("type1", "ric1");
 687
 688         for (int i = 0; i < 100; ++i) {
 689             Thread t = new Thread(new ConcurrencyTestRunnable(baseUrl(), this.supervision), "TestThread_" + i);
 690             t.start();
 691             threads.add(t);
 692         }
 693         for (Thread t : threads) {
 694             t.join();
 695         }
 696         assertThat(policies.size()).isEqualTo(0);
 697         logger.info("Concurrency test took " + Duration.between(startTime, Instant.now()));
 698     }
 699
 700     private AsyncRestClient restClient() {
 701         return new AsyncRestClient(baseUrl());
 702     }
 703
 704     private void testErrorCode(Mono<?> request, HttpStatus expStatus) {
 705         testErrorCode(request, expStatus, "");
 706     }
 707
 708     private void testErrorCode(Mono<?> request, HttpStatus expStatus, String responseContains) {
 709         StepVerifier.create(request) //
 710             .expectSubscription() //
 711             .expectErrorMatches(t -> checkWebClientError(t, expStatus, responseContains)) //
 712             .verify();
 713     }
 714
 715     private boolean checkWebClientError(Throwable t, HttpStatus expStatus, String responseContains) {
 716         assertTrue(t instanceof WebClientResponseException);
 717         WebClientResponseException e = (WebClientResponseException) t;
 718         assertThat(e.getStatusCode()).isEqualTo(expStatus);
 719         assertThat(e.getResponseBodyAsString()).contains(responseContains);
 720         return true;
 721     }
 722
 723     private MockA1Client getA1Client(String ricName) throws ServiceException {
 724         return a1ClientFactory.getOrCreateA1Client(ricName);
 725     }
 726
 727     private PolicyType addPolicyType(String policyTypeName, String ricName) {
 728         PolicyType type = ImmutablePolicyType.builder() //
 729             .name(policyTypeName) //
 730             .schema("{\"title\":\"" + policyTypeName + "\"}") //
 731             .build();
 732
 733         policyTypes.put(type);
 734         addRic(ricName).addSupportedPolicyType(type);
 735         return type;
 736     }
 737
 738     private Ric addRic(String ricName) {
 739         return addRic(ricName, null);
 740     }
 741
 742     private Ric addRic(String ricName, String managedElement) {
 743         if (rics.get(ricName) != null) {
 744             return rics.get(ricName);
 745         }
 746         List<String> mes = new ArrayList<>();
 747         if (managedElement != null) {
 748             mes.add(managedElement);
 749         }
 750         RicConfig conf = ImmutableRicConfig.builder() //
 751             .name(ricName) //
 752             .baseUrl(ricName) //
 753             .managedElementIds(mes) //
 754             .build();
 755         Ric ric = new Ric(conf);
 756         ric.setState(Ric.RicState.IDLE);
 757         this.rics.put(ric);
 758         return ric;
 759     }
 760
 761     private static HttpEntity<String> createJsonHttpEntity(String content) {
 762         HttpHeaders headers = new HttpHeaders();
 763         headers.setContentType(MediaType.APPLICATION_JSON);
 764         return new HttpEntity<String>(content, headers);
 765     }
 766
 767     private static <T> List<T> parseList(String jsonString, Class<T> clazz) {
 768         List<T> result = new ArrayList<>();
 769         JsonArray jsonArr = JsonParser.parseString(jsonString).getAsJsonArray();
 770         for (JsonElement jsonElement : jsonArr) {
 771             T o = gson.fromJson(jsonElement.toString(), clazz);
 772             result.add(o);
 773         }
 774         return result;
 775     }
 776
 777     private static List<String> parseSchemas(String jsonString) {
 778         JsonArray arrayOfSchema = JsonParser.parseString(jsonString).getAsJsonArray();
 779         List<String> result = new ArrayList<>();
 780         for (JsonElement schemaObject : arrayOfSchema) {
 781             result.add(schemaObject.toString());
 782         }
 783         return result;
 784     }
 785 }