gerrit.onap Code Review - ccsdk/oran.git/blob

   1 /*-
   2  * ========================LICENSE_START=================================
   3  * ONAP : ccsdk oran
   4  * ======================================================================
   5  * Copyright (C) 2019-2023 Nordix Foundation. All rights reserved.
   6  * Copyright (C) 2024 OpenInfra Foundation Europe. All rights reserved.
   7  * ======================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ========================LICENSE_END===================================
  20  */
  21
  22 package org.onap.ccsdk.oran.a1policymanagementservice.controllers.v2;
  23
  24 import com.google.gson.Gson;
  25 import com.google.gson.GsonBuilder;
  26
  27 import io.swagger.v3.oas.annotations.Operation;
  28 import io.swagger.v3.oas.annotations.Parameter;
  29 import io.swagger.v3.oas.annotations.media.Content;
  30 import io.swagger.v3.oas.annotations.media.Schema;
  31 import io.swagger.v3.oas.annotations.responses.ApiResponse;
  32 import io.swagger.v3.oas.annotations.responses.ApiResponses;
  33 import io.swagger.v3.oas.annotations.tags.Tag;
  34
  35 import java.lang.invoke.MethodHandles;
  36 import java.time.Instant;
  37 import java.util.ArrayList;
  38 import java.util.Collection;
  39 import java.util.List;
  40 import java.util.Map;
  41
  42 import lombok.Getter;
  43
  44 import lombok.RequiredArgsConstructor;
  45 import org.onap.ccsdk.oran.a1policymanagementservice.clients.A1ClientFactory;
  46 import org.onap.ccsdk.oran.a1policymanagementservice.controllers.VoidResponse;
  47 import org.onap.ccsdk.oran.a1policymanagementservice.controllers.authorization.AuthorizationCheck;
  48 import org.onap.ccsdk.oran.a1policymanagementservice.controllers.authorization.PolicyAuthorizationRequest.Input.AccessType;
  49 import org.onap.ccsdk.oran.a1policymanagementservice.exceptions.EntityNotFoundException;
  50 import org.onap.ccsdk.oran.a1policymanagementservice.exceptions.ServiceException;
  51 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Lock;
  52 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Lock.LockType;
  53 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Policies;
  54 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Policy;
  55 import org.onap.ccsdk.oran.a1policymanagementservice.repository.PolicyType;
  56 import org.onap.ccsdk.oran.a1policymanagementservice.repository.PolicyTypes;
  57 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Ric;
  58 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Rics;
  59 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Service;
  60 import org.onap.ccsdk.oran.a1policymanagementservice.repository.Services;
  61 import org.slf4j.Logger;
  62 import org.slf4j.LoggerFactory;
  63 import org.springframework.http.HttpStatus;
  64 import org.springframework.http.MediaType;
  65 import org.springframework.http.ResponseEntity;
  66 import org.springframework.web.bind.annotation.DeleteMapping;
  67 import org.springframework.web.bind.annotation.GetMapping;
  68 import org.springframework.web.bind.annotation.PathVariable;
  69 import org.springframework.web.bind.annotation.PutMapping;
  70 import org.springframework.web.bind.annotation.RequestBody;
  71 import org.springframework.web.bind.annotation.RequestHeader;
  72 import org.springframework.web.bind.annotation.RequestParam;
  73 import org.springframework.web.bind.annotation.RestController;
  74 import org.springframework.web.reactive.function.client.WebClientException;
  75 import org.springframework.web.reactive.function.client.WebClientResponseException;
  76
  77 import reactor.core.publisher.Flux;
  78 import reactor.core.publisher.Mono;
  79
  80 @RestController("policyControllerV2")
  81 @RequiredArgsConstructor
  82 @Tag(//
  83         name = PolicyController.API_NAME, //
  84         description = PolicyController.API_DESCRIPTION //
  85 )
  86 public class PolicyController {
  87
  88     public static final String API_NAME = "A1 Policy Management";
  89     public static final String API_DESCRIPTION = "";
  90
  91     public static class RejectionException extends Exception {
  92         private static final long serialVersionUID = 1L;
  93
  94         @Getter
  95         private final HttpStatus status;
  96
  97         public RejectionException(String message, HttpStatus status) {
  98             super(message);
  99             this.status = status;
 100         }
 101     }
 102
 103     private final Rics rics;
 104     private final PolicyTypes policyTypes;
 105     private final Policies policies;
 106     private final A1ClientFactory a1ClientFactory;
 107     private final Services services;
 108     private final AuthorizationCheck authorization;
 109
 110     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
 111     private static final Gson gson = new GsonBuilder().create();
 112
 113     @GetMapping(path = Consts.V2_API_ROOT + "/policy-types/{policytype_id:.+}") //
 114     @Operation(summary = "Returns a policy type definition") //
 115     @ApiResponses(value = { //
 116             @ApiResponse(responseCode = "200", //
 117                     description = "Policy type", //
 118                     content = @Content(schema = @Schema(implementation = PolicyTypeInfo.class))), //
 119             @ApiResponse(responseCode = "404", //
 120                     description = "Policy type is not found", //
 121                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class)))//
 122     })
 123     public ResponseEntity<Object> getPolicyType( //
 124             @PathVariable("policytype_id") String policyTypeId) throws EntityNotFoundException {
 125         PolicyType type = policyTypes.getType(policyTypeId);
 126         PolicyTypeInfo info = new PolicyTypeInfo(type.getSchema());
 127         return new ResponseEntity<>(gson.toJson(info), HttpStatus.OK);
 128     }
 129
 130     @GetMapping(path = Consts.V2_API_ROOT + "/policy-types", produces = MediaType.APPLICATION_JSON_VALUE)
 131     @Operation(summary = "Query policy type identities")
 132     @ApiResponses(value = { //
 133             @ApiResponse(responseCode = "200", //
 134                     description = "Policy type IDs", //
 135                     content = @Content(schema = @Schema(implementation = PolicyTypeIdList.class))), //
 136             @ApiResponse(responseCode = "404", //
 137                     description = "Near-RT RIC is not found", //
 138                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))) //
 139     })
 140     public ResponseEntity<Object> getPolicyTypes( //
 141             @Parameter(name = Consts.RIC_ID_PARAM, required = false, //
 142                     description = "Select types for the given Near-RT RIC identity.") //
 143             @RequestParam(name = Consts.RIC_ID_PARAM, required = false) String ricId,
 144
 145             @Parameter(name = Consts.TYPE_NAME_PARAM, required = false, //
 146                     description = "Select types with the given type name (type identity has the format <typename_version>)") //
 147             @RequestParam(name = Consts.TYPE_NAME_PARAM, required = false) String typeName,
 148
 149             @Parameter(name = Consts.COMPATIBLE_WITH_VERSION_PARAM, required = false, //
 150                     description = "Select types that are compatible with the given version. This parameter is only applicable in conjunction with "
 151                             + Consts.TYPE_NAME_PARAM
 152                             + ". As an example version 1.9.1 is compatible with 1.0.0 but not the other way around."
 153                             + " Matching types will be returned sorted in ascending order.") //
 154             @RequestParam(name = Consts.COMPATIBLE_WITH_VERSION_PARAM, required = false) String compatibleWithVersion
 155
 156     ) throws ServiceException {
 157
 158         if (compatibleWithVersion != null && typeName == null) {
 159             throw new ServiceException("Parameter " + Consts.COMPATIBLE_WITH_VERSION_PARAM + " can only be used when "
 160                     + Consts.TYPE_NAME_PARAM + " is given", HttpStatus.BAD_REQUEST);
 161         }
 162
 163         Collection<PolicyType> types =
 164                 ricId != null ? rics.getRic(ricId).getSupportedPolicyTypes() : this.policyTypes.getAll();
 165
 166         types = PolicyTypes.filterTypes(types, typeName, compatibleWithVersion);
 167         return new ResponseEntity<>(toPolicyTypeIdsJson(types), HttpStatus.OK);
 168     }
 169
 170     @GetMapping(path = Consts.V2_API_ROOT + "/policies/{policy_id:.+}", produces = MediaType.APPLICATION_JSON_VALUE)
 171     @Operation(summary = "Returns a policy") //
 172     @ApiResponses(value = { //
 173             @ApiResponse(responseCode = "200", //
 174                     description = "Policy found", //
 175                     content = @Content(schema = @Schema(implementation = PolicyInfo.class))), //
 176             @ApiResponse(responseCode = "404", //
 177                     description = "Policy is not found", //
 178                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))) //
 179     })
 180     public Mono<ResponseEntity<Object>> getPolicy( //
 181             @PathVariable(name = Consts.POLICY_ID_PARAM, required = true) String id,
 182             @RequestHeader Map<String, String> headers) throws EntityNotFoundException {
 183         Policy policy = policies.getPolicy(id);
 184         return authorization.doAccessControl(headers, policy, AccessType.READ) //
 185                 .map(x -> new ResponseEntity<>((Object) gson.toJson(toPolicyInfo(policy)), HttpStatus.OK)) //
 186                 .onErrorResume(this::handleException);
 187     }
 188
 189     @DeleteMapping(Consts.V2_API_ROOT + "/policies/{policy_id:.+}")
 190     @Operation(summary = "Delete a policy")
 191     @ApiResponses(value = { //
 192             @ApiResponse(responseCode = "200", //
 193                     description = "Not used", //
 194                     content = @Content(schema = @Schema(implementation = VoidResponse.class))), //
 195             @ApiResponse(responseCode = "204", //
 196                     description = "Policy deleted", //
 197                     content = @Content(schema = @Schema(implementation = VoidResponse.class))), //
 198             @ApiResponse(responseCode = "404", //
 199                     description = "Policy is not found", //
 200                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))), //
 201             @ApiResponse(responseCode = "423", //
 202                     description = "Near-RT RIC is not operational", //
 203                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))) //
 204     })
 205     public Mono<ResponseEntity<Object>> deletePolicy( //
 206             @PathVariable(Consts.POLICY_ID_PARAM) String policyId, @RequestHeader Map<String, String> headers)
 207             throws EntityNotFoundException {
 208         Policy policy = policies.getPolicy(policyId);
 209         keepServiceAlive(policy.getOwnerServiceId());
 210
 211         return authorization.doAccessControl(headers, policy, AccessType.WRITE)
 212                 .flatMap(x -> policy.getRic().getLock().lock(LockType.SHARED, "deletePolicy")) //
 213                 .flatMap(grant -> deletePolicy(grant, policy)) //
 214                 .onErrorResume(this::handleException);
 215     }
 216
 217     Mono<ResponseEntity<Object>> deletePolicy(Lock.Grant grant, Policy policy) {
 218         return assertRicStateIdle(policy.getRic()) //
 219                 .flatMap(notUsed -> a1ClientFactory.createA1Client(policy.getRic())) //
 220                 .doOnNext(notUsed -> policies.remove(policy)) //
 221                 .doFinally(x -> grant.unlockBlocking()) //
 222                 .flatMap(client -> client.deletePolicy(policy)) //
 223                 .map(notUsed -> new ResponseEntity<>(HttpStatus.NO_CONTENT)) //
 224                 .onErrorResume(this::handleException);
 225     }
 226
 227     @PutMapping(path = Consts.V2_API_ROOT + "/policies", produces = MediaType.APPLICATION_JSON_VALUE)
 228     @Operation(summary = "Create or update a policy")
 229     @ApiResponses(value = { //
 230             @ApiResponse(responseCode = "201", //
 231                     description = "Policy created", //
 232                     content = @Content(schema = @Schema(implementation = VoidResponse.class))), //
 233             @ApiResponse(responseCode = "200", //
 234                     description = "Policy updated", //
 235                     content = @Content(schema = @Schema(implementation = VoidResponse.class))), //
 236             @ApiResponse(responseCode = "423", //
 237                     description = "Near-RT RIC is not operational", //
 238                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))), //
 239             @ApiResponse(responseCode = "404", //
 240                     description = "Near-RT RIC or policy type is not found", //
 241                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))) //
 242     })
 243     public Mono<ResponseEntity<Object>> putPolicy(@RequestBody PolicyInfo policyInfo,
 244             @RequestHeader Map<String, String> headers) throws EntityNotFoundException {
 245
 246         if (!policyInfo.validate()) {
 247             return ErrorResponse.createMono("Missing required parameter in body", HttpStatus.BAD_REQUEST);
 248         }
 249         String jsonString = gson.toJson(policyInfo.policyData);
 250         Ric ric = rics.get(policyInfo.ricId);
 251         PolicyType type = policyTypes.get(policyInfo.policyTypeId);
 252         keepServiceAlive(policyInfo.serviceId);
 253         if (ric == null || type == null) {
 254             throw new EntityNotFoundException("Near-RT RIC or policy type not found");
 255         }
 256         Policy policy = Policy.builder() //
 257                 .id(policyInfo.policyId) //
 258                 .json(jsonString) //
 259                 .type(type) //
 260                 .ric(ric) //
 261                 .ownerServiceId(policyInfo.serviceId) //
 262                 .lastModified(Instant.now()) //
 263                 .isTransient(policyInfo.isTransient) //
 264                 .statusNotificationUri(policyInfo.statusNotificationUri == null ? "" : policyInfo.statusNotificationUri) //
 265                                 .build();
 266
 267         return authorization.doAccessControl(headers, policy, AccessType.WRITE) //
 268                 .flatMap(x -> ric.getLock().lock(LockType.SHARED, "putPolicy")) //
 269                 .flatMap(grant -> putPolicy(grant, policy)) //
 270                 .onErrorResume(this::handleException);
 271     }
 272
 273     private Mono<ResponseEntity<Object>> putPolicy(Lock.Grant grant, Policy policy) {
 274         final boolean isCreate = this.policies.get(policy.getId()) == null;
 275         final Ric ric = policy.getRic();
 276
 277         return assertRicStateIdle(ric) //
 278                 .flatMap(notUsed -> checkSupportedType(ric, policy.getType())) //
 279                 .flatMap(notUsed -> validateModifiedPolicy(policy)) //
 280                 .flatMap(notUsed -> a1ClientFactory.createA1Client(ric)) //
 281                 .flatMap(client -> client.putPolicy(policy)) //
 282                 .doOnNext(notUsed -> policies.put(policy)) //
 283                 .doFinally(x -> grant.unlockBlocking()) //
 284                 .flatMap(notUsed -> Mono.just(new ResponseEntity<>(isCreate ? HttpStatus.CREATED : HttpStatus.OK))) //
 285                 .onErrorResume(this::handleException);
 286
 287     }
 288
 289     private Mono<ResponseEntity<Object>> handleException(Throwable throwable) {
 290         if (throwable instanceof WebClientResponseException e) {
 291             return ErrorResponse.createMono(e.getResponseBodyAsString(), e.getStatusCode());
 292         } else if (throwable instanceof WebClientException e) {
 293             return ErrorResponse.createMono(e.getMessage(), HttpStatus.BAD_GATEWAY);
 294         } else if (throwable instanceof RejectionException e) {
 295             return ErrorResponse.createMono(e.getMessage(), e.getStatus());
 296         } else if (throwable instanceof ServiceException e) {
 297             return ErrorResponse.createMono(e.getMessage(), e.getHttpStatus());
 298         } else {
 299             return ErrorResponse.createMono(throwable.getMessage(), HttpStatus.INTERNAL_SERVER_ERROR);
 300         }
 301     }
 302
 303     private Mono<Object> validateModifiedPolicy(Policy policy) {
 304         // Check that ric is not updated
 305         Policy current = this.policies.get(policy.getId());
 306         if (current != null && !current.getRic().id().equals(policy.getRic().id())) {
 307             RejectionException e = new RejectionException("Policy cannot change RIC, policyId: " + current.getId() + //
 308                     ", RIC ID: " + current.getRic().id() + //
 309                     ", new ID: " + policy.getRic().id(), HttpStatus.CONFLICT);
 310             logger.debug("Request rejected, {}", e.getMessage());
 311             return Mono.error(e);
 312         }
 313         return Mono.just("{}");
 314     }
 315
 316     private Mono<Object> checkSupportedType(Ric ric, PolicyType type) {
 317         if (!ric.isSupportingType(type.getId())) {
 318             logger.debug("Request rejected, type not supported, RIC: {}", ric);
 319             RejectionException e = new RejectionException(
 320                     "Type: " + type.getId() + " not supported by RIC: " + ric.id(), HttpStatus.NOT_FOUND);
 321             return Mono.error(e);
 322         }
 323         return Mono.just("{}");
 324     }
 325
 326     private Mono<Object> assertRicStateIdle(Ric ric) {
 327         if (ric.getState() == Ric.RicState.AVAILABLE) {
 328             return Mono.just("{}");
 329         } else {
 330             logger.debug("Request rejected Near-RT RIC not IDLE, ric: {}", ric);
 331             RejectionException e = new RejectionException(
 332                     "Near-RT RIC: is not operational, id: " + ric.id() + ", state: " + ric.getState(),
 333                     HttpStatus.LOCKED);
 334             return Mono.error(e);
 335         }
 336     }
 337
 338     static final String GET_POLICIES_QUERY_DETAILS =
 339             "Returns a list of A1 policies matching given search criteria. <br>" //
 340                     + "If several query parameters are defined, the policies matching all conditions are returned.";
 341
 342     @GetMapping(path = Consts.V2_API_ROOT + "/policy-instances", produces = MediaType.APPLICATION_JSON_VALUE)
 343     @Operation(summary = "Query for A1 policy instances", description = GET_POLICIES_QUERY_DETAILS)
 344     @ApiResponses(value = { //
 345             @ApiResponse(responseCode = "200", //
 346                     description = "Policies", //
 347                     content = @Content(schema = @Schema(implementation = PolicyInfoList.class))), //
 348             @ApiResponse(responseCode = "404", //
 349                     description = "Near-RT RIC, policy type or service not found", //
 350                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))) //
 351     })
 352     public Mono<ResponseEntity<Object>> getPolicyInstances( //
 353             @Parameter(name = Consts.POLICY_TYPE_ID_PARAM, required = false,
 354                     description = "Select policies with a given type identity.") //
 355             @RequestParam(name = Consts.POLICY_TYPE_ID_PARAM, required = false) String typeId, //
 356             @Parameter(name = Consts.RIC_ID_PARAM, required = false,
 357                     description = "Select policies for a given Near-RT RIC identity.") //
 358             @RequestParam(name = Consts.RIC_ID_PARAM, required = false) String ric, //
 359             @Parameter(name = Consts.SERVICE_ID_PARAM, required = false,
 360                     description = "Select policies owned by a given service.") //
 361             @RequestParam(name = Consts.SERVICE_ID_PARAM, required = false) String service,
 362             @Parameter(name = Consts.TYPE_NAME_PARAM, required = false, //
 363                     description = "Select policies of a given type name (type identity has the format <typename_version>)") //
 364             @RequestParam(name = Consts.TYPE_NAME_PARAM, required = false) String typeName,
 365             @RequestHeader Map<String, String> headers) throws EntityNotFoundException //
 366     {
 367         if ((typeId != null && this.policyTypes.get(typeId) == null)) {
 368             throw new EntityNotFoundException("Policy type identity not found");
 369         }
 370         if ((ric != null && this.rics.get(ric) == null)) {
 371             throw new EntityNotFoundException("Near-RT RIC not found");
 372         }
 373
 374         Collection<Policy> filtered = policies.filterPolicies(typeId, ric, service, typeName);
 375         return Flux.fromIterable(filtered) //
 376                 .flatMap(policy -> authorization.doAccessControl(headers, policy, AccessType.READ)) //
 377                 .doOnError(e -> logger.debug("Unauthorized to read policy: {}", e.getMessage())) //
 378                 .onErrorResume(e -> Mono.empty()) //
 379                 .collectList() //
 380                 .map(authPolicies -> policiesToJson(authPolicies)) //
 381                 .map(str -> new ResponseEntity<>(str, HttpStatus.OK));
 382     }
 383
 384     @GetMapping(path = Consts.V2_API_ROOT + "/policies", produces = MediaType.APPLICATION_JSON_VALUE) //
 385     @Operation(summary = "Query policy identities", description = GET_POLICIES_QUERY_DETAILS) //
 386     @ApiResponses(value = { //
 387             @ApiResponse(responseCode = "200", //
 388                     description = "Policy identities", //
 389                     content = @Content(schema = @Schema(implementation = PolicyIdList.class))), //
 390             @ApiResponse(responseCode = "404", //
 391                     description = "Near-RT RIC or type not found", //
 392                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))) //
 393     })
 394     public Mono<ResponseEntity<Object>> getPolicyIds( //
 395             @Parameter(name = Consts.POLICY_TYPE_ID_PARAM, required = false, //
 396                     description = "Select policies of a given policy type identity.") //
 397             @RequestParam(name = Consts.POLICY_TYPE_ID_PARAM, required = false) String policyTypeId, //
 398             @Parameter(name = Consts.RIC_ID_PARAM, required = false, //
 399                     description = "Select policies of a given Near-RT RIC identity.") //
 400             @RequestParam(name = Consts.RIC_ID_PARAM, required = false) String ricId, //
 401             @Parameter(name = Consts.SERVICE_ID_PARAM, required = false, //
 402                     description = "Select policies owned by a given service.") //
 403             @RequestParam(name = Consts.SERVICE_ID_PARAM, required = false) String serviceId,
 404             @Parameter(name = Consts.TYPE_NAME_PARAM, required = false, //
 405                     description = "Select policies of types with the given type name (type identity has the format <typename_version>)") //
 406             @RequestParam(name = Consts.TYPE_NAME_PARAM, required = false) String typeName,
 407             @RequestHeader Map<String, String> headers) throws EntityNotFoundException //
 408     {
 409         if ((policyTypeId != null && this.policyTypes.get(policyTypeId) == null)) {
 410             throw new EntityNotFoundException("Policy type not found");
 411         }
 412         if ((ricId != null && this.rics.get(ricId) == null)) {
 413             throw new EntityNotFoundException("Near-RT RIC not found");
 414         }
 415
 416         Collection<Policy> filtered = policies.filterPolicies(policyTypeId, ricId, serviceId, typeName);
 417         return Flux.fromIterable(filtered) //
 418                 .flatMap(policy -> authorization.doAccessControl(headers, policy, AccessType.READ)) //
 419                 .doOnError(e -> logger.debug("Unauthorized to read policy: {}", e.getMessage())) //
 420                 .onErrorResume(e -> Mono.empty()) //
 421                 .collectList() //
 422                 .map(authPolicies -> toPolicyIdsJson(authPolicies)) //
 423                 .map(policyIdsJson -> new ResponseEntity<>(policyIdsJson, HttpStatus.OK));
 424     }
 425
 426     @GetMapping(path = Consts.V2_API_ROOT + "/policies/{policy_id}/status", produces = MediaType.APPLICATION_JSON_VALUE)
 427     @Operation(summary = "Returns a policy status") //
 428     @ApiResponses(value = { //
 429             @ApiResponse(responseCode = "200", //
 430                     description = "Policy status", //
 431                     content = @Content(schema = @Schema(implementation = PolicyStatusInfo.class))), //
 432             @ApiResponse(responseCode = "404", //
 433                     description = "Policy is not found", //
 434                     content = @Content(schema = @Schema(implementation = ErrorResponse.ErrorInfo.class))) //
 435     })
 436     public Mono<ResponseEntity<Object>> getPolicyStatus( //
 437             @PathVariable(Consts.POLICY_ID_PARAM) String policyId, @RequestHeader Map<String, String> headers)
 438             throws EntityNotFoundException {
 439         Policy policy = policies.getPolicy(policyId);
 440
 441         return authorization.doAccessControl(headers, policy, AccessType.READ) //
 442                 .flatMap(notUsed -> a1ClientFactory.createA1Client(policy.getRic())) //
 443                 .flatMap(client -> client.getPolicyStatus(policy).onErrorResume(e -> Mono.just("{}"))) //
 444                 .flatMap(status -> createPolicyStatus(policy, status)) //
 445                 .onErrorResume(this::handleException);
 446
 447     }
 448
 449     private Mono<ResponseEntity<Object>> createPolicyStatus(Policy policy, String statusFromNearRic) {
 450         PolicyStatusInfo info = new PolicyStatusInfo(policy.getLastModified(), fromJson(statusFromNearRic));
 451         String str = gson.toJson(info);
 452         return Mono.just(new ResponseEntity<>(str, HttpStatus.OK));
 453     }
 454
 455     private void keepServiceAlive(String name) {
 456         Service s = this.services.get(name);
 457         if (s != null) {
 458             s.keepAlive();
 459         }
 460     }
 461
 462     private PolicyInfo toPolicyInfo(Policy p) {
 463         PolicyInfo policyInfo = new PolicyInfo();
 464         policyInfo.policyId = p.getId();
 465         policyInfo.policyData = fromJson(p.getJson());
 466         policyInfo.ricId = p.getRic().id();
 467         policyInfo.policyTypeId = p.getType().getId();
 468         policyInfo.serviceId = p.getOwnerServiceId();
 469         policyInfo.isTransient = p.isTransient();
 470         if (!p.getStatusNotificationUri().isEmpty()) {
 471             policyInfo.statusNotificationUri = p.getStatusNotificationUri();
 472             }
 473         if (!policyInfo.validate()) {
 474             logger.error("BUG, all mandatory fields must be set");
 475         }
 476
 477             return policyInfo;
 478     }
 479
 480     private String policiesToJson(Collection<Policy> policies) {
 481         List<PolicyInfo> v = new ArrayList<>(policies.size());
 482         for (Policy p : policies) {
 483             v.add(toPolicyInfo(p));
 484         }
 485         PolicyInfoList list = new PolicyInfoList(v);
 486         return gson.toJson(list);
 487     }
 488
 489     private Object fromJson(String jsonStr) {
 490         return gson.fromJson(jsonStr, Object.class);
 491     }
 492
 493     private String toPolicyTypeIdsJson(Collection<PolicyType> types) {
 494         List<String> v = new ArrayList<>(types.size());
 495         for (PolicyType t : types) {
 496             v.add(t.getId());
 497         }
 498         PolicyTypeIdList ids = new PolicyTypeIdList(v);
 499         return gson.toJson(ids);
 500     }
 501
 502     private String toPolicyIdsJson(Collection<Policy> policies) {
 503         List<String> v = new ArrayList<>(policies.size());
 504         for (Policy p : policies) {
 505             v.add(p.getId());
 506         }
 507         return gson.toJson(new PolicyIdList(v));
 508     }
 509 }