src/main/java/org/onap/clamp/clds/client/req/policy/PolicyClient.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP CLAMP
   4  * ================================================================================
   5  * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights
   6  *                             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  */
  23
  24 package org.onap.clamp.clds.client.req.policy;
  25
  26 import com.att.eelf.configuration.EELFLogger;
  27 import com.att.eelf.configuration.EELFManager;
  28
  29 import java.io.IOException;
  30 import java.io.OutputStream;
  31 import java.nio.file.Files;
  32 import java.nio.file.Path;
  33 import java.nio.file.Paths;
  34 import java.util.Collection;
  35 import java.util.Date;
  36 import java.util.Map;
  37 import java.util.UUID;
  38
  39 import javax.ws.rs.BadRequestException;
  40
  41 import org.onap.clamp.clds.config.ClampProperties;
  42 import org.onap.clamp.clds.config.PolicyConfiguration;
  43 import org.onap.clamp.clds.exception.policy.PolicyClientException;
  44 import org.onap.clamp.clds.model.CldsToscaModel;
  45 import org.onap.clamp.clds.model.properties.ModelProperties;
  46 import org.onap.clamp.clds.model.properties.PolicyItem;
  47 import org.onap.clamp.clds.util.LoggingUtils;
  48 import org.onap.policy.api.AttributeType;
  49 import org.onap.policy.api.ConfigRequestParameters;
  50 import org.onap.policy.api.DeletePolicyCondition;
  51 import org.onap.policy.api.DeletePolicyParameters;
  52 import org.onap.policy.api.DictionaryType;
  53 import org.onap.policy.api.ImportParameters;
  54 import org.onap.policy.api.ImportParameters.IMPORT_TYPE;
  55 import org.onap.policy.api.PolicyChangeResponse;
  56 import org.onap.policy.api.PolicyClass;
  57 import org.onap.policy.api.PolicyConfigException;
  58 import org.onap.policy.api.PolicyConfigType;
  59 import org.onap.policy.api.PolicyEngine;
  60 import org.onap.policy.api.PolicyEngineException;
  61 import org.onap.policy.api.PolicyParameters;
  62 import org.onap.policy.api.PolicyType;
  63 import org.onap.policy.api.PushPolicyParameters;
  64 import org.onap.policy.api.RuleProvider;
  65 import org.springframework.beans.factory.annotation.Autowired;
  66 import org.springframework.context.ApplicationContext;
  67 import org.springframework.context.annotation.Primary;
  68 import org.springframework.stereotype.Component;
  69
  70 /**
  71  * Policy utility methods - specifically, send the policy.
  72  */
  73 @Component
  74 @Primary
  75 public class PolicyClient {
  76
  77     protected PolicyEngine policyEngine;
  78     protected static final String LOG_POLICY_PREFIX = "Response is ";
  79     protected static final EELFLogger logger = EELFManager.getInstance().getLogger(PolicyClient.class);
  80     protected static final EELFLogger metricsLogger = EELFManager.getInstance().getMetricsLogger();
  81     public static final String POLICY_MSTYPE_PROPERTY_NAME = "policy.ms.type";
  82     public static final String POLICY_ONAPNAME_PROPERTY_NAME = "policy.onap.name";
  83     public static final String POLICY_BASENAME_PREFIX_PROPERTY_NAME = "policy.base.policyNamePrefix";
  84     public static final String POLICY_OP_NAME_PREFIX_PROPERTY_NAME = "policy.op.policyNamePrefix";
  85     public static final String POLICY_MS_NAME_PREFIX_PROPERTY_NAME = "policy.ms.policyNamePrefix";
  86     public static final String POLICY_OP_TYPE_PROPERTY_NAME = "policy.op.type";
  87     public static final String POLICY_GUARD_SUFFIX = "_Guard";
  88     public static final String TOSCA_FILE_TEMP_PATH = "tosca.filePath";
  89
  90     @Autowired
  91     protected ApplicationContext appContext;
  92     @Autowired
  93     protected ClampProperties refProp;
  94     @Autowired
  95     private PolicyConfiguration policyConfiguration;
  96
  97     /**
  98      * Perform Guard policy type.
  99      *
 100      * @param attributes
 101      *        A map of attributes
 102      * @param prop
 103      *        The ModelProperties
 104      * @param policyRequestUuid
 105      *        PolicyRequest UUID
 106      * @return The response message of policy
 107      */
 108     public String sendGuardPolicy(Map<AttributeType, Map<String, String>> attributes, ModelProperties prop,
 109         String policyRequestUuid, PolicyItem policyItem) {
 110         PolicyParameters policyParameters = new PolicyParameters();
 111         // Set Policy Type(Mandatory)
 112         policyParameters.setPolicyClass(PolicyClass.Decision);
 113         // Set Policy Name(Mandatory)
 114         policyParameters.setPolicyName(prop.getPolicyScopeAndNameWithUniqueGuardId());
 115         // documentation says this is options, but when tested, got the
 116         // following failure: java.lang.Exception: Policy send failed: PE300 -
 117         // Data Issue: No policyDescription given.
 118         policyParameters.setPolicyDescription(refProp.getStringValue("op.policyDescription"));
 119         policyParameters.setOnapName("PDPD");
 120         policyParameters.setRuleProvider(RuleProvider.valueOf(policyItem.getGuardPolicyType()));
 121         policyParameters.setAttributes(attributes);
 122         // Set a random UUID(Mandatory)
 123         policyParameters.setRequestID(UUID.fromString(policyRequestUuid));
 124
 125         String rtnMsg = send(policyParameters, prop, null);
 126         push(DictionaryType.Decision.toString(), prop);
 127         return rtnMsg;
 128     }
 129
 130     /**
 131      * Perform BRMS policy type.
 132      *
 133      * @param attributes
 134      *        A map of attributes
 135      * @param prop
 136      *        The ModelProperties
 137      * @param policyRequestUuid
 138      *        PolicyRequest UUID
 139      * @return The response message of policy
 140      */
 141     public String sendBrmsPolicy(Map<AttributeType, Map<String, String>> attributes, ModelProperties prop,
 142         String policyRequestUuid) {
 143         PolicyParameters policyParameters = new PolicyParameters();
 144         // Set Policy Type(Mandatory)
 145         policyParameters.setPolicyConfigType(PolicyConfigType.BRMS_PARAM);
 146         // Set Policy Name(Mandatory)
 147         policyParameters.setPolicyName(prop.getPolicyScopeAndNameWithUniqueId());
 148         // documentation says this is options, but when tested, got the
 149         // following failure: java.lang.Exception: Policy send failed: PE300 -
 150         // Data Issue: No policyDescription given.
 151         policyParameters.setPolicyDescription(refProp.getStringValue("op.policyDescription"));
 152         policyParameters.setAttributes(attributes);
 153         // Set a random UUID(Mandatory)
 154         policyParameters.setRequestID(UUID.fromString(policyRequestUuid));
 155         String policyNamePrefix = refProp.getStringValue(POLICY_OP_NAME_PREFIX_PROPERTY_NAME);
 156         String rtnMsg = send(policyParameters, prop, policyNamePrefix);
 157         String policyType = refProp.getStringValue(POLICY_OP_TYPE_PROPERTY_NAME);
 158         push(policyType, prop);
 159         return rtnMsg;
 160     }
 161
 162     /**
 163      * Perform send of microservice policy in JSON.
 164      *
 165      * @param policyJson
 166      *        The policy JSON
 167      * @param prop
 168      *        The ModelProperties
 169      * @param policyRequestUuid
 170      *        The policy Request UUID
 171      * @return The response message of policy
 172      */
 173     public String sendMicroServiceInJson(String policyJson, ModelProperties prop, String policyRequestUuid) {
 174         PolicyParameters policyParameters = new PolicyParameters();
 175         // Set Policy Type
 176         policyParameters.setPolicyConfigType(PolicyConfigType.MicroService);
 177         policyParameters.setOnapName(refProp.getStringValue(POLICY_ONAPNAME_PROPERTY_NAME));
 178         policyParameters.setPolicyName(prop.getCurrentPolicyScopeAndPolicyName());
 179         policyParameters.setConfigBody(policyJson);
 180         policyParameters.setConfigBodyType(PolicyType.JSON);
 181         policyParameters.setRequestID(UUID.fromString(policyRequestUuid));
 182         String policyNamePrefix = refProp.getStringValue(POLICY_MS_NAME_PREFIX_PROPERTY_NAME);
 183         // Adding this line to clear the policy id from policy name while
 184         // pushing to policy engine
 185         prop.setPolicyUniqueId("");
 186         String rtnMsg = send(policyParameters, prop, policyNamePrefix);
 187         String policyType = refProp.getStringValue(POLICY_MSTYPE_PROPERTY_NAME);
 188         push(policyType, prop);
 189         return rtnMsg;
 190     }
 191
 192     /**
 193      * Perform send of base policy in OTHER type.
 194      *
 195      * @param configBody
 196      *        The config policy string body
 197      * @param configPolicyName
 198      *        The config policy name of the component that has been pre-deployed in
 199      *        DCAE
 200      * @param prop
 201      *        The ModelProperties
 202      * @param policyRequestUuid
 203      *        The policy request UUID
 204      * @return The answer from policy call
 205      */
 206     public String sendBasePolicyInOther(String configBody, String configPolicyName, ModelProperties prop,
 207         String policyRequestUuid) {
 208         PolicyParameters policyParameters = new PolicyParameters();
 209         // Set Policy Type
 210         policyParameters.setPolicyConfigType(PolicyConfigType.Base);
 211         policyParameters.setOnapName(refProp.getStringValue(POLICY_ONAPNAME_PROPERTY_NAME));
 212         policyParameters.setPolicyName(prop.getCurrentPolicyScopeAndPolicyName());
 213         policyParameters.setConfigBody(configBody);
 214         policyParameters.setConfigBodyType(PolicyType.OTHER);
 215         policyParameters.setConfigName("HolmesPolicy");
 216         policyParameters.setPolicyName(configPolicyName);
 217         policyParameters.setRequestID(UUID.fromString(policyRequestUuid));
 218         // Adding this line to clear the policy id from policy name while
 219         // pushing to policy engine
 220         prop.setPolicyUniqueId("");
 221         String rtnMsg = send(policyParameters, prop, refProp.getStringValue(POLICY_BASENAME_PREFIX_PROPERTY_NAME));
 222         push(PolicyConfigType.Base.toString(), prop);
 223         return rtnMsg;
 224     }
 225
 226     /**
 227      * Perform send of Microservice policy in OTHER type.
 228      *
 229      * @param configBody
 230      *        The config policy string body
 231      * @param prop
 232      *        The ModelProperties
 233      * @return The answer from policy call
 234      */
 235     public String sendMicroServiceInOther(String configBody, ModelProperties prop) {
 236         PolicyParameters policyParameters = new PolicyParameters();
 237         // Set Policy Type
 238         policyParameters.setPolicyConfigType(PolicyConfigType.MicroService);
 239         policyParameters.setOnapName(refProp.getStringValue(POLICY_ONAPNAME_PROPERTY_NAME));
 240         policyParameters.setPolicyName(prop.getCurrentPolicyScopeAndPolicyName());
 241         policyParameters.setConfigBody(configBody);
 242         String policyNamePrefix = refProp.getStringValue(POLICY_MS_NAME_PREFIX_PROPERTY_NAME);
 243         // Adding this line to clear the policy id from policy name while
 244         // pushing to policy engine
 245         prop.setPolicyUniqueId("");
 246         String rtnMsg = send(policyParameters, prop, policyNamePrefix);
 247         String policyType = refProp.getStringValue(POLICY_MSTYPE_PROPERTY_NAME);
 248         push(policyType, prop);
 249         return rtnMsg;
 250     }
 251
 252     /**
 253      * Perform send of Configuration or Decision policies.
 254      *
 255      * @param policyParameters
 256      *        The PolicyParameters
 257      * @param prop
 258      *        The ModelProperties
 259      * @return The response message of Policy
 260      */
 261     protected String send(PolicyParameters policyParameters, ModelProperties prop, String policyNamePrefix) {
 262         // Verify whether it is triggered by Validation Test button from UI
 263         if (prop.isTestOnly()) {
 264             return "send not executed for test action";
 265         }
 266         // API method to create or update Policy.
 267         PolicyChangeResponse response = null;
 268         String responseMessage = "";
 269         Date startTime = new Date();
 270         try {
 271             if ((PolicyClass.Decision.equals(policyParameters.getPolicyClass()) && !checkDecisionPolicyExists(prop))
 272                 || (PolicyClass.Config.equals(policyParameters.getPolicyClass())
 273                     && !checkPolicyExists(policyNamePrefix, prop))) {
 274                 LoggingUtils.setTargetContext("Policy", "createPolicy");
 275                 logger.info("Attempting to create policy for action=" + prop.getActionCd());
 276                 response = getPolicyEngine().createPolicy(policyParameters);
 277                 responseMessage = response.getResponseMessage();
 278             } else {
 279                 LoggingUtils.setTargetContext("Policy", "updatePolicy");
 280                 logger.info("Attempting to update policy for action=" + prop.getActionCd());
 281                 response = getPolicyEngine().updatePolicy(policyParameters);
 282                 responseMessage = response.getResponseMessage();
 283             }
 284         } catch (Exception e) {
 285             LoggingUtils.setResponseContext("900", "Policy send failed", this.getClass().getName());
 286             LoggingUtils.setErrorContext("900", "Policy send error");
 287             logger.error("Exception occurred during policy communication", e);
 288             throw new PolicyClientException("Exception while communicating with Policy", e);
 289         }
 290         logger.info(LOG_POLICY_PREFIX + responseMessage);
 291         LoggingUtils.setTimeContext(startTime, new Date());
 292         if (response.getResponseCode() == 200) {
 293             LoggingUtils.setResponseContext("0", "Policy send success", this.getClass().getName());
 294             logger.info("Policy send successful");
 295             metricsLogger.info("Policy send success");
 296         } else {
 297             LoggingUtils.setResponseContext("900", "Policy send failed", this.getClass().getName());
 298             logger.warn("Policy send failed: " + responseMessage);
 299             metricsLogger.info("Policy send failure");
 300             throw new BadRequestException("Policy send failed: " + responseMessage);
 301         }
 302         return responseMessage;
 303     }
 304
 305     /**
 306      * Format and send push of policy.
 307      *
 308      * @param policyType
 309      *        The policy Type
 310      * @param prop
 311      *        The ModelProperties
 312      * @return The response message of policy
 313      */
 314     protected String push(String policyType, ModelProperties prop) {
 315         // Verify whether it is triggered by Validation Test button from UI
 316         if (prop.isTestOnly()) {
 317             return "push not executed for test action";
 318         }
 319         PushPolicyParameters pushPolicyParameters = new PushPolicyParameters();
 320         // Parameter arguments
 321         if (prop.getPolicyUniqueId() != null && !prop.getPolicyUniqueId().isEmpty()) {
 322             if (DictionaryType.Decision.toString().equals(policyType)) {
 323                 pushPolicyParameters.setPolicyName(prop.getPolicyScopeAndNameWithUniqueGuardId());
 324             } else {
 325                 pushPolicyParameters.setPolicyName(prop.getPolicyScopeAndNameWithUniqueId());
 326             }
 327         } else {
 328             pushPolicyParameters.setPolicyName(prop.getCurrentPolicyScopeAndPolicyName());
 329         }
 330         logger.info("Policy Name in Push policy method - " + pushPolicyParameters.getPolicyName());
 331         pushPolicyParameters.setPolicyType(policyType);
 332         pushPolicyParameters.setPdpGroup(refProp.getStringValue("policy.pdp.group"));
 333         pushPolicyParameters.setRequestID(null);
 334         // API method to create or update Policy.
 335         PolicyChangeResponse response;
 336         String responseMessage = "";
 337         try {
 338             LoggingUtils.setTargetContext("Policy", "pushPolicy");
 339             logger.info("Attempting to push policy...");
 340             response = getPolicyEngine().pushPolicy(pushPolicyParameters);
 341             if (response != null) {
 342                 responseMessage = response.getResponseMessage();
 343             }
 344         } catch (Exception e) {
 345             LoggingUtils.setResponseContext("900", "Policy push failed", this.getClass().getName());
 346             LoggingUtils.setErrorContext("900", "Policy push error");
 347             logger.error("Exception occurred during policy communication", e);
 348             throw new PolicyClientException("Exception while communicating with Policy", e);
 349         }
 350         logger.info(LOG_POLICY_PREFIX + responseMessage);
 351         if (response != null && (response.getResponseCode() == 200 || response.getResponseCode() == 204)) {
 352             LoggingUtils.setResponseContext("0", "Policy push success", this.getClass().getName());
 353             logger.info("Policy push successful");
 354             metricsLogger.info("Policy push success");
 355         } else {
 356             LoggingUtils.setResponseContext("900", "Policy push failed", this.getClass().getName());
 357             logger.warn("Policy push failed: " + responseMessage);
 358             metricsLogger.info("Policy push failure");
 359             throw new BadRequestException("Policy push failed: " + responseMessage);
 360         }
 361         return responseMessage;
 362     }
 363
 364     /**
 365      * Use list Decision policy to know if the decision policy exists.
 366      *
 367      * @param prop
 368      *        The model properties
 369      * @return true if it exists, false otherwise
 370      */
 371     protected boolean checkDecisionPolicyExists(ModelProperties prop) {
 372         boolean policyexists = false;
 373
 374         logger.info("Search in Policy Engine for DecisionpolicyName=" + prop.getPolicyScopeAndNameWithUniqueGuardId());
 375         try {
 376             // No other choice than pushing to see if it exists or not
 377             String response = push(DictionaryType.Decision.toString(), prop);
 378             if (response != null) {
 379                 policyexists = true;
 380             }
 381         } catch (BadRequestException e) {
 382             // just print warning - if no policy version found
 383             logger.warn("Policy not found...policy name - " + prop.getPolicyScopeAndNameWithUniqueGuardId(), e);
 384         }
 385         return policyexists;
 386     }
 387
 388     /**
 389      * Use list Policy API to retrieve the policy. Return true if policy exists
 390      * otherwise return false.
 391      *
 392      * @param policyNamePrefix
 393      *        The Policy Name Prefix
 394      * @param prop
 395      *        The ModelProperties
 396      * @return The response message from policy
 397      * @throws PolicyConfigException
 398      *         In case of issues with policy engine
 399      */
 400     protected boolean checkPolicyExists(String policyNamePrefix, ModelProperties prop) {
 401         boolean policyexists = false;
 402         String policyName = "";
 403         try {
 404
 405             if (prop.getPolicyUniqueId() != null && !prop.getPolicyUniqueId().isEmpty()) {
 406                 policyName = prop.getCurrentPolicyScopeAndFullPolicyName(policyNamePrefix) + "_"
 407                     + prop.getPolicyUniqueId();
 408             } else {
 409                 policyName = prop.getCurrentPolicyScopeAndFullPolicyName(policyNamePrefix);
 410             }
 411             logger.info("Search in Policy Engine for policyName=" + policyName);
 412
 413             ConfigRequestParameters configRequestParameters = new ConfigRequestParameters();
 414             configRequestParameters.setPolicyName(policyName);
 415             Collection<String> response = getPolicyEngine().listConfig(configRequestParameters);
 416             if (response != null && !response.isEmpty() && !response.contains("Policy Name: null")) {
 417                 policyexists = true;
 418             }
 419         } catch (PolicyConfigException e1) {
 420             // just print warning - if no policy version found
 421             logger.warn("Policy not found...policy name - " + policyName, e1);
 422         }
 423         return policyexists;
 424     }
 425
 426     /**
 427      * This method create a new policy engine.
 428      *
 429      * @return A new policy engine
 430      */
 431     private synchronized PolicyEngine getPolicyEngine() {
 432         try {
 433             if (policyEngine == null) {
 434                 policyEngine = new PolicyEngine(policyConfiguration.getProperties());
 435             }
 436         } catch (PolicyEngineException e) {
 437             throw new PolicyClientException("Exception when creating a new policy engine", e);
 438         }
 439         return policyEngine;
 440     }
 441
 442     /**
 443      * Format and send delete Micro Service requests to Policy.
 444      *
 445      * @param prop
 446      *        The ModelProperties
 447      * @return The response message from Policy
 448      */
 449     public String deleteMicrosService(ModelProperties prop) {
 450         String deletePolicyResponse = "";
 451         try {
 452             String policyNamePrefix = refProp.getStringValue(POLICY_MS_NAME_PREFIX_PROPERTY_NAME);
 453             if (checkPolicyExists(policyNamePrefix, prop)) {
 454                 String policyType = refProp.getStringValue(POLICY_MSTYPE_PROPERTY_NAME);
 455                 deletePolicyResponse = deletePolicy(prop, policyType);
 456             }
 457         } catch (Exception e) {
 458             logger.error("Exception occurred during policy communication", e);
 459             throw new PolicyClientException("Exception while communicating with Policy", e);
 460         }
 461         return deletePolicyResponse;
 462     }
 463
 464     /**
 465      * This method delete the Base policy.
 466      *
 467      * @param prop
 468      *        The model Properties
 469      * @return A string with the answer from policy
 470      */
 471     public String deleteBasePolicy(ModelProperties prop) {
 472         return deletePolicy(prop, PolicyConfigType.Base.toString());
 473     }
 474
 475     /**
 476      * Format and send delete Guard requests to Policy.
 477      *
 478      * @param prop
 479      *        The ModelProperties
 480      * @return The response message from policy
 481      */
 482     public String deleteGuard(ModelProperties prop) {
 483         String deletePolicyResponse = "";
 484         try {
 485
 486             if (checkDecisionPolicyExists(prop)) {
 487                 deletePolicyResponse = deletePolicy(prop, DictionaryType.Decision.toString());
 488             }
 489         } catch (Exception e) {
 490             logger.error("Exception occurred during policy communication", e);
 491             throw new PolicyClientException("Exception while communicating with Policy", e);
 492         }
 493         return deletePolicyResponse;
 494     }
 495
 496     /**
 497      * Format and send delete BRMS requests to Policy.
 498      *
 499      * @param prop
 500      *        The ModelProperties
 501      * @return The response message from policy
 502      */
 503     public String deleteBrms(ModelProperties prop) {
 504         String deletePolicyResponse = "";
 505         try {
 506             String policyNamePrefix = refProp.getStringValue(POLICY_OP_NAME_PREFIX_PROPERTY_NAME);
 507             if (checkPolicyExists(policyNamePrefix, prop)) {
 508                 String policyType = refProp.getStringValue(POLICY_OP_TYPE_PROPERTY_NAME);
 509                 deletePolicyResponse = deletePolicy(prop, policyType);
 510             }
 511         } catch (Exception e) {
 512             logger.error("Exception occurred during policy communication", e);
 513             throw new PolicyClientException("Exception while communicating with Policy", e);
 514         }
 515         return deletePolicyResponse;
 516     }
 517
 518     /**
 519      * Format and send delete PAP and PDP requests to Policy.
 520      *
 521      * @param prop
 522      *        The ModelProperties
 523      * @return The response message from policy
 524      */
 525     protected String deletePolicy(ModelProperties prop, String policyType) {
 526         DeletePolicyParameters deletePolicyParameters = new DeletePolicyParameters();
 527         if (prop.getPolicyUniqueId() != null && !prop.getPolicyUniqueId().isEmpty()) {
 528             if (DictionaryType.Decision.toString().equals(policyType)) {
 529                 deletePolicyParameters.setPolicyName(prop.getPolicyScopeAndNameWithUniqueGuardId());
 530             } else {
 531                 deletePolicyParameters.setPolicyName(prop.getPolicyScopeAndNameWithUniqueId());
 532             }
 533         } else {
 534             deletePolicyParameters.setPolicyName(prop.getCurrentPolicyScopeAndPolicyName());
 535         }
 536         logger.info("Policy Name in delete policy method - " + deletePolicyParameters.getPolicyName());
 537         logger.info("Deleting policy from PDP...");
 538         deletePolicyParameters.setPolicyComponent("PDP");
 539         deletePolicyParameters.setDeleteCondition(DeletePolicyCondition.ALL);
 540         deletePolicyParameters.setPdpGroup(refProp.getStringValue("policy.pdp.group"));
 541         deletePolicyParameters.setPolicyType(policyType);
 542         // send delete request
 543         StringBuilder responseMessage = new StringBuilder(sendDeletePolicy(deletePolicyParameters, prop));
 544         logger.info("Deleting policy from PAP...");
 545         deletePolicyParameters.setPolicyComponent("PAP");
 546         deletePolicyParameters.setDeleteCondition(DeletePolicyCondition.ALL);
 547         // send delete request
 548         responseMessage.append(sendDeletePolicy(deletePolicyParameters, prop));
 549         return responseMessage.toString();
 550     }
 551
 552     /**
 553      * Send delete request to Policy.
 554      *
 555      * @param deletePolicyParameters
 556      *        The DeletePolicyParameters
 557      * @param prop
 558      *        The ModelProperties
 559      * @return The response message from policy
 560      */
 561     protected String sendDeletePolicy(DeletePolicyParameters deletePolicyParameters, ModelProperties prop) {
 562         // Verify whether it is triggered by Validation Test button from UI
 563         if (prop.isTestOnly()) {
 564             return "delete not executed for test action";
 565         }
 566         // API method to create or update Policy.
 567         PolicyChangeResponse response = null;
 568         String responseMessage = "";
 569         try {
 570             logger.info("Attempting to delete policy...");
 571             response = getPolicyEngine().deletePolicy(deletePolicyParameters);
 572             responseMessage = response.getResponseMessage();
 573         } catch (Exception e) {
 574             logger.error("Exception occurred during policy communnication", e);
 575         }
 576         logger.info(LOG_POLICY_PREFIX + responseMessage);
 577         if (response != null && response.getResponseCode() == 200) {
 578             logger.info("Policy delete successful");
 579         } else {
 580             logger.warn("Policy delete failed: " + responseMessage);
 581             throw new BadRequestException("Policy delete failed: " + responseMessage);
 582         }
 583         return responseMessage;
 584     }
 585
 586     /**
 587      * Create a temp Tosca model file and perform import model to Policy Engine
 588      *
 589      * @param cldsToscaModel
 590      *        Policy model details
 591      * @return The response message from policy
 592      */
 593     public String importToscaModel(CldsToscaModel cldsToscaModel) {
 594         String filePath = "";
 595         try {
 596             String clampToscaPath = refProp.getStringValue(TOSCA_FILE_TEMP_PATH);
 597             filePath = buildFilePathForToscaFile(clampToscaPath, cldsToscaModel.getToscaModelName());
 598             logger.info("Writing Tosca model : " + filePath);
 599             Path path = Paths.get(filePath);
 600             Files.createDirectories(path.getParent());
 601             // Create or Ovewrite an existing the file
 602             try (OutputStream out = Files.newOutputStream(path)) {
 603                 out.write(cldsToscaModel.getToscaModelYaml().getBytes(), 0,
 604                     cldsToscaModel.getToscaModelYaml().getBytes().length);
 605             }
 606         } catch (IOException e) {
 607             logger.error("Exception caught when attempting to write Tosca files to disk", e);
 608             throw new PolicyClientException("Exception caught when attempting to write Tosca files to disk", e);
 609         }
 610
 611         ImportParameters importParameters = new ImportParameters();
 612         importParameters.setImportParameters(cldsToscaModel.getToscaModelName(), cldsToscaModel.getToscaModelName(),
 613             null, filePath, IMPORT_TYPE.MICROSERVICE, String.valueOf(cldsToscaModel.getVersion()));
 614         return importModel(importParameters);
 615     }
 616
 617     /**
 618      * @param importParameters
 619      *        The ImportParameters
 620      * @return The response message from policy
 621      */
 622     protected String importModel(ImportParameters importParameters) {
 623         PolicyChangeResponse response = null;
 624         String responseMessage = "";
 625
 626         try {
 627             logger.info("Attempting to import tosca policy model for action=" + importParameters.getFilePath());
 628             response = getPolicyEngine().policyEngineImport(importParameters);
 629             if (response != null) {
 630                 responseMessage = response.getResponseMessage();
 631             }
 632         } catch (Exception e) {
 633             LoggingUtils.setResponseContext("900", "Policy Model import failed", this.getClass().getName());
 634             LoggingUtils.setErrorContext("900", "Policy Model import error");
 635             logger.error("Exception occurred during policy communication", e);
 636             throw new PolicyClientException("Exception while communicating with Policy", e);
 637         }
 638         logger.info(LOG_POLICY_PREFIX + responseMessage);
 639         if (response != null && (response.getResponseCode() == 200 || response.getResponseCode() == 204)) {
 640             LoggingUtils.setResponseContext("0", "Policy Model import success", this.getClass().getName());
 641             logger.info("Policy import model successful");
 642             metricsLogger.info("Policy import model success");
 643         } else {
 644             LoggingUtils.setResponseContext("900", "Policy import model failed", this.getClass().getName());
 645             logger.warn("Policy import model failed: " + responseMessage);
 646             metricsLogger.info("Policy import model failure");
 647             throw new BadRequestException("Policy import model failed: " + responseMessage);
 648         }
 649         return responseMessage;
 650     }
 651
 652     /**
 653      * @param clampToscaPath
 654      *        Temp directory path for writing tosca files
 655      * @param toscaModelName
 656      *        Tosca Model Name
 657      * @return File Path on the system
 658      */
 659     private String buildFilePathForToscaFile(String clampToscaPath, String toscaModelName) {
 660         return clampToscaPath + "/" + toscaModelName + ".yml";
 661     }
 662 }