catalog-be/src/main/java/org/openecomp/sdc/be/tosca/ToscaExportHandler.java

   1 /*-
   2 * ============LICENSE_START=======================================================
   3 * SDC
   4 * ================================================================================
   5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6 * ================================================================================
   7 * Licensed under the Apache License, Version 2.0 (the "License");
   8 * you may not use this file except in compliance with the License.
   9 * You may obtain a copy of the License at
  10 *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12 *
  13  * Unless required by applicable law or agreed to in writing, software
  14 * distributed under the License is distributed on an "AS IS" BASIS,
  15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 * See the License for the specific language governing permissions and
  17 * limitations under the License.
  18 * ============LICENSE_END=========================================================
  19 */
  20
  21 package org.openecomp.sdc.be.tosca;
  22
  23 import static org.openecomp.sdc.be.tosca.utils.InterfacesOperationsToscaUtil.addInterfaceDefinitionElement;
  24 import static org.openecomp.sdc.be.tosca.utils.InterfacesOperationsToscaUtil.addInterfaceTypeElement;
  25
  26 import fj.data.Either;
  27 import org.apache.commons.lang.StringUtils;
  28 import org.apache.commons.lang3.tuple.ImmutablePair;
  29 import org.apache.commons.lang3.tuple.ImmutableTriple;
  30 import org.apache.commons.lang3.tuple.Triple;
  31 import org.openecomp.sdc.be.components.impl.exceptions.SdcResourceNotFoundException;
  32 import org.openecomp.sdc.be.config.ConfigurationManager;
  33 import org.openecomp.sdc.be.dao.titan.TitanOperationStatus;
  34 import org.openecomp.sdc.be.datatypes.components.ResourceMetadataDataDefinition;
  35 import org.openecomp.sdc.be.datatypes.enums.ComponentTypeEnum;
  36 import org.openecomp.sdc.be.datatypes.enums.OriginTypeEnum;
  37 import org.openecomp.sdc.be.datatypes.enums.ResourceTypeEnum;
  38 import org.openecomp.sdc.be.model.ArtifactDefinition;
  39 import org.openecomp.sdc.be.model.CapabilityDefinition;
  40 import org.openecomp.sdc.be.model.Component;
  41 import org.openecomp.sdc.be.model.ComponentInstance;
  42 import org.openecomp.sdc.be.model.ComponentInstanceInput;
  43 import org.openecomp.sdc.be.model.ComponentInstanceProperty;
  44 import org.openecomp.sdc.be.model.ComponentParametersView;
  45 import org.openecomp.sdc.be.model.DataTypeDefinition;
  46 import org.openecomp.sdc.be.model.GroupInstance;
  47 import org.openecomp.sdc.be.model.InputDefinition;
  48 import org.openecomp.sdc.be.model.InterfaceDefinition;
  49 import org.openecomp.sdc.be.model.PropertyDefinition;
  50 import org.openecomp.sdc.be.model.RelationshipInfo;
  51 import org.openecomp.sdc.be.model.RequirementCapabilityRelDef;
  52 import org.openecomp.sdc.be.model.RequirementDefinition;
  53 import org.openecomp.sdc.be.model.Resource;
  54 import org.openecomp.sdc.be.model.Service;
  55 import org.openecomp.sdc.be.model.cache.ApplicationDataTypeCache;
  56 import org.openecomp.sdc.be.model.category.CategoryDefinition;
  57 import org.openecomp.sdc.be.model.jsontitan.operations.ToscaOperationFacade;
  58 import org.openecomp.sdc.be.model.jsontitan.utils.ModelConverter;
  59 import org.openecomp.sdc.be.model.operations.api.IInterfaceLifecycleOperation;
  60 import org.openecomp.sdc.be.model.operations.api.StorageOperationStatus;
  61 import org.openecomp.sdc.be.model.operations.impl.InterfaceLifecycleOperation;
  62 import org.openecomp.sdc.be.tosca.model.SubstitutionMapping;
  63 import org.openecomp.sdc.be.tosca.model.ToscaCapability;
  64 import org.openecomp.sdc.be.tosca.model.ToscaGroupTemplate;
  65 import org.openecomp.sdc.be.tosca.model.ToscaMetadata;
  66 import org.openecomp.sdc.be.tosca.model.ToscaNodeTemplate;
  67 import org.openecomp.sdc.be.tosca.model.ToscaNodeType;
  68 import org.openecomp.sdc.be.tosca.model.ToscaPolicyTemplate;
  69 import org.openecomp.sdc.be.tosca.model.ToscaProperty;
  70 import org.openecomp.sdc.be.tosca.model.ToscaTemplate;
  71 import org.openecomp.sdc.be.tosca.model.ToscaTemplateRequirement;
  72 import org.openecomp.sdc.be.tosca.model.ToscaTopolgyTemplate;
  73 import org.openecomp.sdc.be.tosca.utils.ForwardingPathToscaUtil;
  74 import org.openecomp.sdc.be.tosca.utils.InputConverter;
  75 import org.openecomp.sdc.common.log.wrappers.Logger;
  76 import org.openecomp.sdc.exception.ResponseFormat;
  77 import org.springframework.beans.factory.annotation.Autowired;
  78 import org.yaml.snakeyaml.DumperOptions;
  79 import org.yaml.snakeyaml.DumperOptions.FlowStyle;
  80 import org.yaml.snakeyaml.Yaml;
  81 import org.yaml.snakeyaml.introspector.BeanAccess;
  82 import org.yaml.snakeyaml.introspector.Property;
  83 import org.yaml.snakeyaml.introspector.PropertyUtils;
  84 import org.yaml.snakeyaml.nodes.MappingNode;
  85 import org.yaml.snakeyaml.nodes.Node;
  86 import org.yaml.snakeyaml.nodes.NodeTuple;
  87 import org.yaml.snakeyaml.nodes.Tag;
  88 import org.yaml.snakeyaml.representer.Represent;
  89 import org.yaml.snakeyaml.representer.Representer;
  90
  91 import java.beans.IntrospectionException;
  92 import java.util.ArrayList;
  93 import java.util.Collection;
  94 import java.util.HashMap;
  95 import java.util.LinkedHashSet;
  96 import java.util.List;
  97 import java.util.Map;
  98 import java.util.Map.Entry;
  99 import java.util.Optional;
 100 import java.util.Set;
 101 import java.util.function.Supplier;
 102 import java.util.stream.Collectors;
 103
 104 import static org.apache.commons.collections.CollectionUtils.isEmpty;
 105 import static org.apache.commons.collections.CollectionUtils.isNotEmpty;
 106 import static org.apache.commons.collections.MapUtils.isNotEmpty;
 107 import static org.apache.commons.lang.StringUtils.isNotEmpty;
 108
 109 @org.springframework.stereotype.Component("tosca-export-handler")
 110 public class ToscaExportHandler {
 111
 112     private ApplicationDataTypeCache dataTypeCache;
 113     private ToscaOperationFacade toscaOperationFacade;
 114     private CapabilityRequirementConverter capabilityRequirementConverter;
 115     private PolicyExportParser policyExportParser;
 116     private GroupExportParser groupExportParser;
 117     private PropertyConvertor propertyConvertor;
 118     private InputConverter inputConverter;
 119     private InterfaceLifecycleOperation interfaceLifecycleOperation;
 120
 121     @Autowired
 122     public ToscaExportHandler(ApplicationDataTypeCache dataTypeCache, ToscaOperationFacade toscaOperationFacade,
 123                               CapabilityRequirementConverter capabilityRequirementConverter, PolicyExportParser policyExportParser,
 124                               GroupExportParser groupExportParser, InputConverter inputConverter, InterfaceLifecycleOperation interfaceLifecycleOperation) {
 125             this.dataTypeCache = dataTypeCache;
 126             this.toscaOperationFacade = toscaOperationFacade;
 127             this.capabilityRequirementConverter = capabilityRequirementConverter;
 128             this.policyExportParser = policyExportParser;
 129             this.groupExportParser = groupExportParser;
 130             this.propertyConvertor = PropertyConvertor.getInstance();
 131             this.inputConverter =  inputConverter;
 132             this.interfaceLifecycleOperation = interfaceLifecycleOperation;
 133       }
 134
 135
 136     private static final Logger log = Logger.getLogger(ToscaExportHandler.class);
 137
 138     public static final String TOSCA_VERSION = "tosca_simple_yaml_1_1";
 139     private static final String SERVICE_NODE_TYPE_PREFIX = "org.openecomp.service.";
 140     private static final String IMPORTS_FILE_KEY = "file";
 141     private static final String TOSCA_INTERFACE_NAME = "-interface.yml";
 142     public static final String ASSET_TOSCA_TEMPLATE = "assettoscatemplate";
 143     private static final String FAILED_TO_GET_DEFAULT_IMPORTS_CONFIGURATION = "convertToToscaTemplate - failed to get Default Imports section from configuration";
 144     private static final String NOT_SUPPORTED_COMPONENT_TYPE = "Not supported component type {}";
 145     private static final List<Map<String, Map<String, String>>> DEFAULT_IMPORTS = ConfigurationManager
 146             .getConfigurationManager().getConfiguration().getDefaultImports();
 147
 148     public Either<ToscaRepresentation, ToscaError> exportComponent(Component component) {
 149
 150         Either<ToscaTemplate, ToscaError> toscaTemplateRes = convertToToscaTemplate(component);
 151         if (toscaTemplateRes.isRight()) {
 152             return Either.right(toscaTemplateRes.right().value());
 153         }
 154
 155         ToscaTemplate toscaTemplate = toscaTemplateRes.left().value();
 156         ToscaRepresentation toscaRepresentation = this.createToscaRepresentation(toscaTemplate);
 157         return Either.left(toscaRepresentation);
 158     }
 159
 160     public Either<ToscaRepresentation, ToscaError> exportComponentInterface(Component component,
 161                                                                             boolean isAssociatedResourceComponent) {
 162         if (null == DEFAULT_IMPORTS) {
 163             log.debug(FAILED_TO_GET_DEFAULT_IMPORTS_CONFIGURATION);
 164             return Either.right(ToscaError.GENERAL_ERROR);
 165         }
 166
 167         ToscaTemplate toscaTemplate = new ToscaTemplate(TOSCA_VERSION);
 168         toscaTemplate.setImports(new ArrayList<>(DEFAULT_IMPORTS));
 169         Map<String, ToscaNodeType> nodeTypes = new HashMap<>();
 170         Either<ToscaTemplate, ToscaError> toscaTemplateRes = convertInterfaceNodeType(new HashMap<>(), component,
 171                 toscaTemplate, nodeTypes, isAssociatedResourceComponent);
 172         if (toscaTemplateRes.isRight()) {
 173             return Either.right(toscaTemplateRes.right().value());
 174         }
 175
 176         toscaTemplate = toscaTemplateRes.left().value();
 177         ToscaRepresentation toscaRepresentation = this.createToscaRepresentation(toscaTemplate);
 178         return Either.left(toscaRepresentation);
 179     }
 180
 181     public ToscaRepresentation createToscaRepresentation(ToscaTemplate toscaTemplate) {
 182         CustomRepresenter representer = new CustomRepresenter();
 183         DumperOptions options = new DumperOptions();
 184         options.setAllowReadOnlyProperties(false);
 185         options.setPrettyFlow(true);
 186
 187         options.setDefaultFlowStyle(FlowStyle.FLOW);
 188         options.setCanonical(false);
 189
 190         representer.addClassTag(toscaTemplate.getClass(), Tag.MAP);
 191
 192         representer.setPropertyUtils(new UnsortedPropertyUtils());
 193         Yaml yaml = new Yaml(representer, options);
 194
 195         String yamlAsString = yaml.dumpAsMap(toscaTemplate);
 196
 197         StringBuilder sb = new StringBuilder();
 198         sb.append(ConfigurationManager.getConfigurationManager().getConfiguration().getHeatEnvArtifactHeader());
 199         sb.append(yamlAsString);
 200         sb.append(ConfigurationManager.getConfigurationManager().getConfiguration().getHeatEnvArtifactFooter());
 201
 202         ToscaRepresentation toscaRepresentation = new ToscaRepresentation();
 203         toscaRepresentation.setMainYaml(sb.toString());
 204         toscaRepresentation.setDependencies(toscaTemplate.getDependencies());
 205
 206         return toscaRepresentation;
 207     }
 208
 209     public Either<ToscaTemplate, ToscaError> getDependencies(Component component) {
 210         ToscaTemplate toscaTemplate = new ToscaTemplate(null);
 211         Either<ImmutablePair<ToscaTemplate, Map<String, Component>>, ToscaError> fillImports = fillImports(component,
 212                 toscaTemplate);
 213         if (fillImports.isRight()) {
 214             return Either.right(fillImports.right().value());
 215         }
 216         return Either.left(fillImports.left().value().left);
 217     }
 218
 219     private Either<ToscaTemplate, ToscaError> convertToToscaTemplate(Component component) {
 220         if (null == DEFAULT_IMPORTS) {
 221             log.debug(FAILED_TO_GET_DEFAULT_IMPORTS_CONFIGURATION);
 222             return Either.right(ToscaError.GENERAL_ERROR);
 223         }
 224
 225         log.trace("start tosca export for {}", component.getUniqueId());
 226         ToscaTemplate toscaTemplate = new ToscaTemplate(TOSCA_VERSION);
 227
 228         toscaTemplate.setMetadata(convertMetadata(component));
 229         toscaTemplate.setImports(new ArrayList<>(DEFAULT_IMPORTS));
 230         Map<String, ToscaNodeType> nodeTypes = new HashMap<>();
 231         if (ModelConverter.isAtomicComponent(component)) {
 232             log.trace("convert component as node type");
 233             return convertNodeType(new HashMap<>(), component, toscaTemplate, nodeTypes);
 234         } else {
 235             log.trace("convert component as topology template");
 236             return convertToscaTemplate(component, toscaTemplate);
 237         }
 238
 239     }
 240
 241     private Either<ToscaTemplate, ToscaError> convertToscaTemplate(Component component, ToscaTemplate toscaNode) {
 242
 243         Either<ImmutablePair<ToscaTemplate, Map<String, Component>>, ToscaError> importsRes = fillImports(component,
 244                 toscaNode);
 245         if (importsRes.isRight()) {
 246             return Either.right(importsRes.right().value());
 247         }
 248         toscaNode = importsRes.left().value().left;
 249         Map<String, Component> componentCache = importsRes.left().value().right;
 250         Either<Map<String, ToscaNodeType>, ToscaError> nodeTypesMapEither = createProxyNodeTypes(componentCache , component );
 251         if (nodeTypesMapEither.isRight()) {
 252             log.debug("Failed to fetch normative service proxy resource by tosca name, error {}",
 253                     nodeTypesMapEither.right().value());
 254             return Either.right(nodeTypesMapEither.right().value());
 255         }
 256         Map<String, ToscaNodeType> nodeTypesMap = nodeTypesMapEither.left().value();
 257         if (nodeTypesMap != null && !nodeTypesMap.isEmpty()) {
 258             toscaNode.setNode_types(nodeTypesMap);
 259         }
 260
 261
 262         Either<Map<String, DataTypeDefinition>, TitanOperationStatus> dataTypesEither = dataTypeCache.getAll();
 263         if (dataTypesEither.isRight()) {
 264             log.debug("Failed to retrieve all data types {}", dataTypesEither.right().value());
 265             return Either.right(ToscaError.GENERAL_ERROR);
 266         }
 267         Map<String, DataTypeDefinition> dataTypes = dataTypesEither.left().value();
 268         ToscaTopolgyTemplate topologyTemplate = new ToscaTopolgyTemplate();
 269         List<InputDefinition> inputDef = component.getInputs();
 270         Map<String, ToscaProperty> inputs = inputConverter.convertInputs(inputDef, dataTypes);
 271
 272         if (!inputs.isEmpty()) {
 273             topologyTemplate.setInputs(inputs);
 274         }
 275
 276         List<ComponentInstance> componentInstances = component.getComponentInstances();
 277         Map<String, List<ComponentInstanceProperty>> componentInstancesProperties = component
 278                 .getComponentInstancesProperties();
 279         if (componentInstances != null && !componentInstances.isEmpty()) {
 280
 281             Either<Map<String, ToscaNodeTemplate>, ToscaError> nodeTemplates = convertNodeTemplates(component,
 282                     componentInstances, componentInstancesProperties, componentCache, dataTypes, topologyTemplate);
 283             if (nodeTemplates.isRight()) {
 284                 return Either.right(nodeTemplates.right().value());
 285             }
 286             log.debug("node templates converted");
 287
 288             topologyTemplate.setNode_templates(nodeTemplates.left().value());
 289         }
 290
 291
 292         addGroupsToTopologyTemplate(component, topologyTemplate);
 293
 294         try {
 295              addPoliciesToTopologyTemplate(component, topologyTemplate);
 296             } catch (SdcResourceNotFoundException e) {
 297                   log.debug("Fail to add policies to topology template:",e);
 298                   Either.right(ToscaError.GENERAL_ERROR);
 299             }
 300
 301
 302         SubstitutionMapping substitutionMapping = new SubstitutionMapping();
 303         String toscaResourceName;
 304         switch (component.getComponentType()) {
 305         case RESOURCE:
 306             toscaResourceName = ((ResourceMetadataDataDefinition) component.getComponentMetadataDefinition()
 307                     .getMetadataDataDefinition()).getToscaResourceName();
 308             break;
 309         case SERVICE:
 310             toscaResourceName = SERVICE_NODE_TYPE_PREFIX
 311                     + component.getComponentMetadataDefinition().getMetadataDataDefinition().getSystemName();
 312             break;
 313         default:
 314             log.debug(NOT_SUPPORTED_COMPONENT_TYPE, component.getComponentType());
 315             return Either.right(ToscaError.NOT_SUPPORTED_TOSCA_TYPE);
 316         }
 317         substitutionMapping.setNode_type(toscaResourceName);
 318
 319         Either<SubstitutionMapping, ToscaError> capabilities = convertCapabilities(component, substitutionMapping, componentCache);
 320         if (capabilities.isRight()) {
 321             return Either.right(capabilities.right().value());
 322         }
 323         substitutionMapping = capabilities.left().value();
 324
 325         Either<SubstitutionMapping, ToscaError> requirements = capabilityRequirementConverter
 326                 .convertSubstitutionMappingRequirements(componentCache, component, substitutionMapping);
 327         if (requirements.isRight()) {
 328             return Either.right(requirements.right().value());
 329         }
 330         substitutionMapping = requirements.left().value();
 331
 332         topologyTemplate.setSubstitution_mappings(substitutionMapping);
 333
 334         toscaNode.setTopology_template(topologyTemplate);
 335         return Either.left(toscaNode);
 336     }
 337
 338       private void addGroupsToTopologyTemplate(Component component, ToscaTopolgyTemplate topologyTemplate) {
 339
 340
 341             Map<String, ToscaGroupTemplate> groups = groupExportParser.getGroups(component);
 342             if(groups!= null) {
 343                   topologyTemplate.addGroups(groups);
 344             }
 345       }
 346
 347       private void addPoliciesToTopologyTemplate(Component component, ToscaTopolgyTemplate topologyTemplate)
 348                   throws SdcResourceNotFoundException {
 349             Map<String, ToscaPolicyTemplate> policies = policyExportParser.getPolicies(component);
 350             if(policies!= null) {
 351                   topologyTemplate.addPolicies(policies);
 352             }
 353       }
 354
 355     private ToscaMetadata convertMetadata(Component component) {
 356         return convertMetadata(component, false, null);
 357     }
 358
 359     private ToscaMetadata convertMetadata(Component component, boolean isInstance,
 360             ComponentInstance componentInstance) {
 361         ToscaMetadata toscaMetadata = new ToscaMetadata();
 362         toscaMetadata.setInvariantUUID(component.getInvariantUUID());
 363         toscaMetadata.setUUID(component.getUUID());
 364         toscaMetadata.setDescription(component.getDescription());
 365         toscaMetadata.setName(component.getComponentMetadataDefinition().getMetadataDataDefinition().getName());
 366
 367         List<CategoryDefinition> categories = component.getCategories();
 368         CategoryDefinition categoryDefinition = categories.get(0);
 369         toscaMetadata.setCategory(categoryDefinition.getName());
 370
 371         if (isInstance) {
 372             toscaMetadata.setVersion(component.getVersion());
 373             toscaMetadata.setCustomizationUUID(componentInstance.getCustomizationUUID());
 374             if (componentInstance.getSourceModelInvariant() != null
 375                     && !componentInstance.getSourceModelInvariant().isEmpty()) {
 376                 toscaMetadata.setVersion(componentInstance.getComponentVersion());
 377                 toscaMetadata.setSourceModelInvariant(componentInstance.getSourceModelInvariant());
 378                 toscaMetadata.setSourceModelUuid(componentInstance.getSourceModelUuid());
 379                 toscaMetadata.setSourceModelName(componentInstance.getSourceModelName());
 380                 toscaMetadata.setName(
 381                         componentInstance.getSourceModelName() + " " + OriginTypeEnum.ServiceProxy.getDisplayValue());
 382                 toscaMetadata.setDescription(componentInstance.getDescription());
 383             }
 384
 385         }
 386         switch (component.getComponentType()) {
 387         case RESOURCE:
 388             Resource resource = (Resource) component;
 389
 390             if (isInstance && componentInstance.getOriginType() == OriginTypeEnum.ServiceProxy) {
 391                 toscaMetadata.setType(componentInstance.getOriginType().getDisplayValue());
 392             } else {
 393                 toscaMetadata.setType(resource.getResourceType().name());
 394             }
 395             toscaMetadata.setSubcategory(categoryDefinition.getSubcategories().get(0).getName());
 396             toscaMetadata.setResourceVendor(resource.getVendorName());
 397             toscaMetadata.setResourceVendorRelease(resource.getVendorRelease());
 398             toscaMetadata.setResourceVendorModelNumber(resource.getResourceVendorModelNumber());
 399             break;
 400         case SERVICE:
 401             Service service = (Service) component;
 402             toscaMetadata.setType(component.getComponentType().getValue());
 403             toscaMetadata.setServiceType(service.getServiceType());
 404             toscaMetadata.setServiceRole(service.getServiceRole());
 405             toscaMetadata.setEnvironmentContext(service.getEnvironmentContext());
 406             resolveInstantiationTypeAndSetItToToscaMetaData(toscaMetadata, service);
 407             if (!isInstance) {
 408                 // DE268546
 409                 toscaMetadata.setServiceEcompNaming(((Service) component).isEcompGeneratedNaming());
 410                 toscaMetadata.setEcompGeneratedNaming(((Service) component).isEcompGeneratedNaming());
 411                 toscaMetadata.setNamingPolicy(((Service) component).getNamingPolicy());
 412             }
 413             break;
 414         default:
 415             log.debug(NOT_SUPPORTED_COMPONENT_TYPE, component.getComponentType());
 416         }
 417         return toscaMetadata;
 418     }
 419
 420       private void resolveInstantiationTypeAndSetItToToscaMetaData(ToscaMetadata toscaMetadata, Service service) {
 421             if (service.getInstantiationType() != null) {
 422                         toscaMetadata.setInstantiationType(service.getInstantiationType());
 423             }
 424             else {
 425                         toscaMetadata.setInstantiationType(StringUtils.EMPTY);
 426             }
 427       }
 428
 429     private Either<ImmutablePair<ToscaTemplate, Map<String, Component>>, ToscaError> fillImports(Component component,
 430             ToscaTemplate toscaTemplate) {
 431
 432         if (null == DEFAULT_IMPORTS) {
 433             log.debug(FAILED_TO_GET_DEFAULT_IMPORTS_CONFIGURATION);
 434             return Either.right(ToscaError.GENERAL_ERROR);
 435         }
 436         Map<String, Component> componentCache = new HashMap<>();
 437
 438         if (!ModelConverter.isAtomicComponent(component)) {
 439             List<ComponentInstance> componentInstances = component.getComponentInstances();
 440             if (componentInstances != null && !componentInstances.isEmpty()) {
 441
 442                 List<Map<String, Map<String, String>>> additionalImports = toscaTemplate.getImports() == null
 443                         ? new ArrayList<>(DEFAULT_IMPORTS) : new ArrayList<>(toscaTemplate.getImports());
 444
 445                 List<Triple<String, String, Component>> dependecies = new ArrayList<>();
 446
 447                 Map<String, ArtifactDefinition> toscaArtifacts = component.getToscaArtifacts();
 448                 ArtifactDefinition artifactDefinition = toscaArtifacts.get(ToscaExportHandler.ASSET_TOSCA_TEMPLATE);
 449
 450                 Map<String, Map<String, String>> importsListMember = new HashMap<>();
 451                 Map<String, String> interfaceFiles = new HashMap<>();
 452                 interfaceFiles.put(IMPORTS_FILE_KEY, getInterfaceFilename(artifactDefinition.getArtifactName()));
 453                 StringBuilder keyNameBuilder = new StringBuilder();
 454                 keyNameBuilder.append(component.getComponentType().toString().toLowerCase());
 455                 keyNameBuilder.append("-");
 456                 keyNameBuilder.append(component.getName());
 457                 keyNameBuilder.append("-interface");
 458                 importsListMember.put(keyNameBuilder.toString(), interfaceFiles);
 459                 additionalImports.add(importsListMember);
 460
 461                 componentInstances.forEach(ci -> createDependency(componentCache, additionalImports, dependecies, ci));
 462                 toscaTemplate.setDependencies(dependecies);
 463                 toscaTemplate.setImports(additionalImports);
 464             }
 465         } else {
 466             log.debug("currently imports supported for VF and service only");
 467         }
 468         return Either.left(new ImmutablePair<>(toscaTemplate, componentCache));
 469     }
 470
 471     private void createDependency(Map<String, Component> componentCache, List<Map<String, Map<String, String>>> imports,
 472             List<Triple<String, String, Component>> dependecies, ComponentInstance ci) {
 473         Map<String, String> files = new HashMap<>();
 474         Map<String, Map<String, String>> importsListMember = new HashMap<>();
 475         StringBuilder keyNameBuilder;
 476
 477         Component componentRI = componentCache.get(ci.getComponentUid());
 478         if (componentRI == null) {
 479             // all resource must be only once!
 480             Either<Component, StorageOperationStatus> resource = toscaOperationFacade
 481                     .getToscaFullElement(ci.getComponentUid());
 482             if ((resource.isRight()) && (log.isDebugEnabled())) {
 483                 log.debug("Failed to fetch resource with id {} for instance {}",ci.getComponentUid() ,ci.getUniqueId());
 484                 return ;
 485             }
 486
 487             Component fetchedComponent = resource.left().value();
 488             componentCache.put(fetchedComponent.getUniqueId(), fetchedComponent);
 489
 490             if (ci.getOriginType() == OriginTypeEnum.ServiceProxy){
 491                 Either<Component, StorageOperationStatus> sourceService = toscaOperationFacade
 492                         .getToscaFullElement(ci.getSourceModelUid());
 493                 if (sourceService.isRight() && (log.isDebugEnabled())) {
 494                     log.debug("Failed to fetch source service with id {} for proxy {}", ci.getSourceModelUid(), ci.getUniqueId());
 495                 }
 496                 Component fetchedSource = sourceService.left().value();
 497                 componentCache.put(fetchedSource.getUniqueId(), fetchedSource);
 498             }
 499
 500             componentRI = fetchedComponent;
 501
 502             Map<String, ArtifactDefinition> toscaArtifacts = componentRI.getToscaArtifacts();
 503             ArtifactDefinition artifactDefinition = toscaArtifacts.get(ASSET_TOSCA_TEMPLATE);
 504             if (artifactDefinition != null) {
 505                 String artifactName = artifactDefinition.getArtifactName();
 506                 files.put(IMPORTS_FILE_KEY, artifactName);
 507                 keyNameBuilder = new StringBuilder();
 508                 keyNameBuilder.append(fetchedComponent.getComponentType().toString().toLowerCase());
 509                 keyNameBuilder.append("-");
 510                 keyNameBuilder.append(ci.getComponentName());
 511                 importsListMember.put(keyNameBuilder.toString(), files);
 512                 imports.add(importsListMember);
 513                 dependecies.add(new ImmutableTriple<>(artifactName,
 514                         artifactDefinition.getEsId(), fetchedComponent));
 515
 516                 if (!ModelConverter.isAtomicComponent(componentRI)) {
 517                     importsListMember = new HashMap<>();
 518                     Map<String, String> interfaceFiles = new HashMap<>();
 519                     interfaceFiles.put(IMPORTS_FILE_KEY, getInterfaceFilename(artifactName));
 520                     keyNameBuilder.append("-interface");
 521                     importsListMember.put(keyNameBuilder.toString(), interfaceFiles);
 522                     imports.add(importsListMember);
 523                 }
 524             }
 525         }
 526     }
 527
 528     public static String getInterfaceFilename(String artifactName) {
 529         return artifactName.substring(0, artifactName.lastIndexOf('.')) + ToscaExportHandler.TOSCA_INTERFACE_NAME;
 530     }
 531
 532     private Either<ToscaTemplate, ToscaError> convertNodeType(Map<String, Component> componentsCache, Component component, ToscaTemplate toscaNode,
 533             Map<String, ToscaNodeType> nodeTypes) {
 534         log.debug("start convert node type for {}", component.getUniqueId());
 535         ToscaNodeType toscaNodeType = createNodeType(component);
 536
 537         Either<Map<String, DataTypeDefinition>, TitanOperationStatus> dataTypesEither = dataTypeCache.getAll();
 538         if (dataTypesEither.isRight()) {
 539             log.debug("Failed to fetch all data types :", dataTypesEither.right().value());
 540             return Either.right(ToscaError.GENERAL_ERROR);
 541         }
 542
 543         Map<String, DataTypeDefinition> dataTypes = dataTypesEither.left().value();
 544         Either<ToscaNodeType, ToscaError> properties = propertyConvertor.convertProperties(component, toscaNodeType,
 545                 dataTypes);
 546         if (properties.isRight()) {
 547             return Either.right(properties.right().value());
 548         }
 549         toscaNodeType = properties.left().value();
 550         log.debug("Properties converted for {}", component.getUniqueId());
 551
 552         // Extracted to method for code reuse
 553         return convertReqCapAndTypeName(componentsCache, component, toscaNode, nodeTypes, toscaNodeType, dataTypes);
 554     }
 555
 556     private Either<ToscaTemplate, ToscaError> convertInterfaceNodeType(Map<String, Component> componentsCache,
 557                                                                        Component component, ToscaTemplate toscaNode,
 558                                                                        Map<String, ToscaNodeType> nodeTypes,
 559                                                                        boolean isAssociatedResourceComponent) {
 560         log.debug("start convert node type for {}", component.getUniqueId());
 561         ToscaNodeType toscaNodeType = createNodeType(component);
 562
 563         Either<Map<String, InterfaceDefinition>, StorageOperationStatus> lifecycleTypeEither = interfaceLifecycleOperation.getAllInterfaceLifecycleTypes();
 564         if(lifecycleTypeEither.isRight()){
 565             log.debug("Failed to fetch all interface types :", lifecycleTypeEither.right().value());
 566             return Either.right(ToscaError.GENERAL_ERROR);
 567         }
 568         List<String> allGlobalInterfaceTypes = lifecycleTypeEither.left().value().values().stream().map(interfaceDef -> interfaceDef.getType()).collect(Collectors.toList());
 569         toscaNode.setInterface_types(addInterfaceTypeElement(component, allGlobalInterfaceTypes));
 570
 571         Either<Map<String, DataTypeDefinition>, TitanOperationStatus> dataTypesEither = dataTypeCache.getAll();
 572         if (dataTypesEither.isRight()) {
 573             log.debug("Failed to fetch all data types :", dataTypesEither.right().value());
 574             return Either.right(ToscaError.GENERAL_ERROR);
 575         }
 576
 577         Map<String, DataTypeDefinition> dataTypes = dataTypesEither.left().value();
 578
 579         List<InputDefinition> inputDef = component.getInputs();
 580         Map<String, ToscaProperty> inputs = new HashMap<>();
 581         addInterfaceDefinitionElement(component, toscaNodeType, isAssociatedResourceComponent);
 582         if (inputDef != null) {
 583             inputDef.forEach(i -> {
 584                 ToscaProperty property = propertyConvertor.convertProperty(dataTypes, i, false);
 585                 inputs.put(i.getName(), property);
 586             });
 587             if (!inputs.isEmpty()) {
 588                 toscaNodeType.setProperties(inputs);
 589             }
 590         }
 591         return convertReqCapAndTypeName(componentsCache, component, toscaNode, nodeTypes, toscaNodeType, dataTypes);
 592     }
 593
 594     private Either<ToscaTemplate, ToscaError> convertReqCapAndTypeName(Map<String, Component> componentsCache, Component component, ToscaTemplate toscaNode,
 595             Map<String, ToscaNodeType> nodeTypes, ToscaNodeType toscaNodeType,
 596             Map<String, DataTypeDefinition> dataTypes) {
 597         Either<ToscaNodeType, ToscaError> capabilities = convertCapabilities(componentsCache, component, toscaNodeType, dataTypes);
 598         if (capabilities.isRight()) {
 599             return Either.right(capabilities.right().value());
 600         }
 601         toscaNodeType = capabilities.left().value();
 602         log.debug("Capabilities converted for {}", component.getUniqueId());
 603
 604         Either<ToscaNodeType, ToscaError> requirements = capabilityRequirementConverter.convertRequirements(componentsCache, component,
 605                 toscaNodeType);
 606         if (requirements.isRight()) {
 607             return Either.right(requirements.right().value());
 608         }
 609         toscaNodeType = requirements.left().value();
 610         log.debug("Requirements converted for {}", component.getUniqueId());
 611
 612         String toscaResourceName;
 613         switch (component.getComponentType()) {
 614         case RESOURCE:
 615             toscaResourceName = ((ResourceMetadataDataDefinition) component.getComponentMetadataDefinition()
 616                     .getMetadataDataDefinition()).getToscaResourceName();
 617             break;
 618         case SERVICE:
 619             toscaResourceName = SERVICE_NODE_TYPE_PREFIX
 620                     + component.getComponentMetadataDefinition().getMetadataDataDefinition().getSystemName();
 621             break;
 622         default:
 623             log.debug(NOT_SUPPORTED_COMPONENT_TYPE, component.getComponentType());
 624             return Either.right(ToscaError.NOT_SUPPORTED_TOSCA_TYPE);
 625         }
 626
 627         nodeTypes.put(toscaResourceName, toscaNodeType);
 628         toscaNode.setNode_types(nodeTypes);
 629         log.debug("finish convert node type for {}", component.getUniqueId());
 630         return Either.left(toscaNode);
 631     }
 632
 633     private Either<Map<String, ToscaNodeTemplate>, ToscaError> convertNodeTemplates(Component component,
 634             List<ComponentInstance> componentInstances,
 635             Map<String, List<ComponentInstanceProperty>> componentInstancesProperties,
 636             Map<String, Component> componentCache, Map<String, DataTypeDefinition> dataTypes,
 637             ToscaTopolgyTemplate topologyTemplate) {
 638
 639         Either<Map<String, ToscaNodeTemplate>, ToscaError> convertNodeTemplatesRes = null;
 640         log.debug("start convert topology template for {} for type {}", component.getUniqueId(),
 641                 component.getComponentType());
 642         Map<String, ToscaNodeTemplate> nodeTemplates = new HashMap<>();
 643         Map<String, List<ComponentInstanceInput>> componentInstancesInputs = component.getComponentInstancesInputs();
 644
 645         Map<String, ToscaGroupTemplate> groupsMap = null;
 646         for (ComponentInstance componentInstance : componentInstances) {
 647             ToscaNodeTemplate nodeTemplate = new ToscaNodeTemplate();
 648             nodeTemplate.setType(componentInstance.getToscaComponentName());
 649
 650             Either<Component, Boolean> originComponentRes = capabilityRequirementConverter
 651                     .getOriginComponent(componentCache, componentInstance);
 652             if (originComponentRes.isRight()) {
 653                 convertNodeTemplatesRes = Either.right(ToscaError.NODE_TYPE_REQUIREMENT_ERROR);
 654                 break;
 655             }
 656             Either<ToscaNodeTemplate, ToscaError> requirements = convertComponentInstanceRequirements(component,
 657                     componentInstance, component.getComponentInstancesRelations(), nodeTemplate,
 658                     originComponentRes.left().value(), componentCache);
 659             if (requirements.isRight()) {
 660                 convertNodeTemplatesRes = Either.right(requirements.right().value());
 661                 break;
 662             }
 663             String instanceUniqueId = componentInstance.getUniqueId();
 664             log.debug("Component instance Requirements converted for instance {}", instanceUniqueId);
 665
 666             nodeTemplate = requirements.left().value();
 667
 668             Component originalComponent = componentCache.get(componentInstance.getActualComponentUid());
 669
 670             if (componentInstance.getOriginType() == OriginTypeEnum.ServiceProxy){
 671                 Component componentOfProxy = componentCache.get(componentInstance.getComponentUid());
 672                 nodeTemplate.setMetadata(convertMetadata(componentOfProxy, true, componentInstance));
 673             } else {
 674                 nodeTemplate.setMetadata(convertMetadata(originalComponent, true, componentInstance));
 675             }
 676
 677             Either<ToscaNodeTemplate, ToscaError> capabilities = capabilityRequirementConverter
 678                     .convertComponentInstanceCapabilities(componentInstance, dataTypes, nodeTemplate);
 679             if (capabilities.isRight()) {
 680                 convertNodeTemplatesRes = Either.right(capabilities.right().value());
 681                 break;
 682             }
 683             log.debug("Component instance Capabilities converted for instance {}", instanceUniqueId);
 684
 685             nodeTemplate = capabilities.left().value();
 686             Map<String, Object> props = new HashMap<>();
 687
 688             if (originalComponent.getComponentType() == ComponentTypeEnum.RESOURCE) {
 689                 // Adds the properties of parent component to map
 690                 addPropertiesOfParentComponent(dataTypes, originalComponent, props);
 691             }
 692
 693             if (null != componentInstancesProperties && componentInstancesProperties.containsKey(instanceUniqueId)) {
 694                 addPropertiesOfComponentInstance(componentInstancesProperties, dataTypes,
 695                         instanceUniqueId, props);
 696             }
 697
 698             if (componentInstancesInputs != null && componentInstancesInputs.containsKey(instanceUniqueId)) {
 699                 addComponentInstanceInputs(dataTypes, componentInstancesInputs, instanceUniqueId,
 700                         props);
 701             }
 702             if (!props.isEmpty()) {
 703                 nodeTemplate.setProperties(props);
 704             }
 705
 706             List<GroupInstance> groupInstances = componentInstance.getGroupInstances();
 707             if (groupInstances != null) {
 708                 if (groupsMap == null) {
 709                     groupsMap = new HashMap<>();
 710                 }
 711                 for (GroupInstance groupInst : groupInstances) {
 712                     boolean addToTosca = true;
 713
 714                     List<String> artifacts = groupInst.getArtifacts();
 715                     if (artifacts == null || artifacts.isEmpty()) {
 716                         addToTosca = false;
 717                     }
 718
 719                     if (addToTosca) {
 720                         ToscaGroupTemplate toscaGroup = groupExportParser.getToscaGroupTemplate(groupInst, componentInstance.getInvariantName());
 721                         groupsMap.put(groupInst.getName(), toscaGroup);
 722                     }
 723                 }
 724             }
 725
 726             nodeTemplates.put(componentInstance.getName(), nodeTemplate);
 727         }
 728         if (groupsMap != null) {
 729             log.debug("instance groups added");
 730             topologyTemplate.addGroups(groupsMap);
 731         }
 732         if (component.getComponentType() == ComponentTypeEnum.SERVICE && isNotEmpty(((Service) component).getForwardingPaths())) {
 733             log.debug("Starting converting paths for component {}, name {}", component.getUniqueId(),
 734                     component.getName());
 735             ForwardingPathToscaUtil.addForwardingPaths((Service) component, nodeTemplates, capabilityRequirementConverter, componentCache, toscaOperationFacade);
 736             log.debug("Finished converting paths for component {}, name {}", component.getUniqueId(),
 737                     component.getName());
 738         }
 739         if (convertNodeTemplatesRes == null) {
 740             convertNodeTemplatesRes = Either.left(nodeTemplates);
 741         }
 742         log.debug("finish convert topology template for {} for type {}", component.getUniqueId(),
 743                 component.getComponentType());
 744         return convertNodeTemplatesRes;
 745     }
 746
 747     private void addComponentInstanceInputs(Map<String, DataTypeDefinition> dataTypes,
 748                                             Map<String, List<ComponentInstanceInput>> componentInstancesInputs,
 749                                             String instanceUniqueId, Map<String, Object> props) {
 750
 751         List<ComponentInstanceInput> instanceInputsList = componentInstancesInputs.get(instanceUniqueId);
 752         if (instanceInputsList != null) {
 753             instanceInputsList.forEach(input -> {
 754
 755                 Supplier<String> supplier = () -> input.getValue() != null && !input.getValue().isEmpty()
 756                         ? input.getValue() : input.getDefaultValue();
 757                         propertyConvertor.convertAndAddValue(dataTypes, props, input, supplier);
 758             });
 759         }
 760     }
 761
 762     private void addPropertiesOfComponentInstance(
 763             Map<String, List<ComponentInstanceProperty>> componentInstancesProperties,
 764             Map<String, DataTypeDefinition> dataTypes, String instanceUniqueId,
 765             Map<String, Object> props) {
 766
 767         if (isNotEmpty(componentInstancesProperties)) {
 768             componentInstancesProperties.get(instanceUniqueId)
 769                     // Converts and adds each value to property map
 770                     .forEach(prop -> propertyConvertor.convertAndAddValue(dataTypes, props, prop,
 771                             prop::getValue));
 772         }
 773     }
 774
 775     private void addPropertiesOfParentComponent(Map<String, DataTypeDefinition> dataTypes,
 776                                                 Component componentOfInstance, Map<String, Object> props) {
 777
 778         List<PropertyDefinition> componentProperties = ((Resource) componentOfInstance).getProperties();
 779         if (isNotEmpty(componentProperties)) {
 780             componentProperties.stream()
 781                     // Filters out properties with empty default values
 782                     .filter(prop -> isNotEmpty(prop.getDefaultValue()))
 783                     // Converts and adds each value to property map
 784                     .forEach(prop -> propertyConvertor.convertAndAddValue(dataTypes, props, prop,
 785                             prop::getDefaultValue));
 786         }
 787     }
 788
 789     private ToscaNodeType createNodeType(Component component) {
 790         ToscaNodeType toscaNodeType = new ToscaNodeType();
 791         if (ModelConverter.isAtomicComponent(component)) {
 792             if (((Resource) component).getDerivedFrom() != null) {
 793                 toscaNodeType.setDerived_from(((Resource) component).getDerivedFrom().get(0));
 794             }
 795             toscaNodeType.setDescription(component.getDescription());
 796         } else {
 797             String derivedFrom = null != component.getDerivedFromGenericType() ? component.getDerivedFromGenericType()
 798                     : "tosca.nodes.Root";
 799             toscaNodeType.setDerived_from(derivedFrom);
 800         }
 801         return toscaNodeType;
 802     }
 803
 804     private Either<Map<String, ToscaNodeType>, ToscaError> createProxyNodeTypes(Map<String, Component> componentCache ,Component container  ) {
 805
 806         Map<String, ToscaNodeType> nodeTypesMap = new HashMap<>();
 807         Either<Map<String, ToscaNodeType>, ToscaError> res = Either.left(nodeTypesMap);
 808
 809         List<ComponentInstance> componentInstances = container.getComponentInstances();
 810
 811         if (componentInstances == null || componentInstances.isEmpty()) {
 812             return res;
 813         }
 814         Map<String, ComponentInstance> serviceProxyInstanceList = new HashMap<>();
 815         List<ComponentInstance> proxyInst = componentInstances.stream()
 816                 .filter(p -> p.getOriginType().name().equals(OriginTypeEnum.ServiceProxy.name()))
 817                 .collect(Collectors.toList());
 818         if (proxyInst != null && !proxyInst.isEmpty()) {
 819             for (ComponentInstance inst : proxyInst) {
 820                 serviceProxyInstanceList.put(inst.getToscaComponentName(), inst);
 821             }
 822         }
 823
 824         if (serviceProxyInstanceList.isEmpty()) {
 825             return res;
 826         }
 827         ComponentParametersView filter = new ComponentParametersView(true);
 828         filter.setIgnoreCapabilities(false);
 829         filter.setIgnoreComponentInstances(false);
 830         Either<Resource, StorageOperationStatus> serviceProxyOrigin = toscaOperationFacade
 831                 .getLatestByName("serviceProxy");
 832         if (serviceProxyOrigin.isRight()) {
 833             log.debug("Failed to fetch normative service proxy resource by tosca name, error {}",
 834                     serviceProxyOrigin.right().value());
 835             return Either.right(ToscaError.NOT_SUPPORTED_TOSCA_TYPE);
 836         }
 837         Component origComponent = serviceProxyOrigin.left().value();
 838
 839         for (Entry<String, ComponentInstance> entryProxy : serviceProxyInstanceList.entrySet()) {
 840             Component serviceComponent = null;
 841             ComponentParametersView componentParametersView = new ComponentParametersView();
 842             componentParametersView.disableAll();
 843             componentParametersView.setIgnoreCategories(false);
 844             Either<Component, StorageOperationStatus> service = toscaOperationFacade
 845                     .getToscaElement(entryProxy.getValue().getSourceModelUid(), componentParametersView);
 846             if (service.isRight()) {
 847                 log.debug("Failed to fetch resource with id {} for instance {}", entryProxy.getValue().getSourceModelUid(),  entryProxy.getValue().getName());
 848             } else {
 849                 serviceComponent = service.left().value();
 850             }
 851
 852             ToscaNodeType toscaNodeType = createProxyNodeType(componentCache , origComponent, serviceComponent, entryProxy.getValue());
 853             nodeTypesMap.put(entryProxy.getKey(), toscaNodeType);
 854         }
 855
 856         return Either.left(nodeTypesMap);
 857     }
 858
 859     private ToscaNodeType createProxyNodeType(Map<String, Component> componentCache , Component origComponent, Component proxyComponent,
 860             ComponentInstance instance) {
 861         ToscaNodeType toscaNodeType = new ToscaNodeType();
 862         String derivedFrom = ((Resource) origComponent).getToscaResourceName();
 863
 864         toscaNodeType.setDerived_from(derivedFrom);
 865         Either<Map<String, DataTypeDefinition>, TitanOperationStatus> dataTypesEither = dataTypeCache.getAll();
 866         if (dataTypesEither.isRight()) {
 867             log.debug("Failed to retrieve all data types {}", dataTypesEither.right().value());
 868         }
 869         Map<String, DataTypeDefinition> dataTypes = dataTypesEither.left().value();
 870         Map<String, ToscaCapability> capabilities = this.capabilityRequirementConverter
 871                 .convertProxyCapabilities( componentCache ,origComponent, proxyComponent, instance, dataTypes);
 872
 873         toscaNodeType.setCapabilities(capabilities);
 874
 875         return toscaNodeType;
 876     }
 877
 878     private Either<ToscaNodeTemplate, ToscaError> convertComponentInstanceRequirements(Component component,
 879             ComponentInstance componentInstance, List<RequirementCapabilityRelDef> relations,
 880             ToscaNodeTemplate nodeTypeTemplate, Component originComponent, Map<String, Component> componentCache) {
 881
 882         List<Map<String, ToscaTemplateRequirement>> toscaRequirements = new ArrayList<>();
 883         if (!addRequirements(component, componentInstance, relations, originComponent, toscaRequirements, componentCache)) {
 884             log.debug("Failed to convert component instance requirements for the component instance {}. ",
 885                     componentInstance.getName());
 886             return Either.right(ToscaError.NODE_TYPE_REQUIREMENT_ERROR);
 887         }
 888         if (!toscaRequirements.isEmpty()) {
 889             nodeTypeTemplate.setRequirements(toscaRequirements);
 890         }
 891         log.debug("Finished to convert requirements for the node type {} ", componentInstance.getName());
 892         return Either.left(nodeTypeTemplate);
 893     }
 894
 895     private boolean addRequirements(Component component, ComponentInstance componentInstance,
 896             List<RequirementCapabilityRelDef> relations, Component originComponent,
 897             List<Map<String, ToscaTemplateRequirement>> toscaRequirements, Map<String, Component> componentCache) {
 898         List<RequirementCapabilityRelDef> filteredRelations = relations.stream()
 899                 .filter(p -> componentInstance.getUniqueId().equals(p.getFromNode())).collect(Collectors.toList());
 900         return isEmpty(filteredRelations) ||
 901                 filteredRelations.stream()
 902                         .allMatch(rel -> addRequirement(componentInstance, originComponent, component.getComponentInstances(), rel, toscaRequirements, componentCache));
 903     }
 904
 905     private boolean addRequirement(ComponentInstance fromInstance, Component fromOriginComponent,
 906             List<ComponentInstance> instancesList, RequirementCapabilityRelDef rel,
 907             List<Map<String, ToscaTemplateRequirement>> toscaRequirements, Map<String, Component> componentCache) {
 908
 909         boolean result = true;
 910         Map<String, List<RequirementDefinition>> reqMap = fromOriginComponent.getRequirements();
 911         RelationshipInfo reqAndRelationshipPair = rel.getRelationships().get(0).getRelation();
 912         Either<Component, StorageOperationStatus> getOriginRes = null;
 913         Optional<RequirementDefinition> reqOpt = Optional.empty();
 914         Component toOriginComponent = null;
 915         Optional<CapabilityDefinition> capOpt = Optional.empty();
 916
 917         ComponentInstance toInstance = instancesList.stream().filter(i -> rel.getToNode().equals(i.getUniqueId()))
 918                 .findFirst().orElse(null);
 919         if (toInstance == null) {
 920             log.debug("Failed to find a relation from the node {} to the node {}", fromInstance.getName(),
 921                     rel.getToNode());
 922             result = false;
 923         }
 924         if (result) {
 925             reqOpt = findRequirement(fromOriginComponent, reqMap, reqAndRelationshipPair, fromInstance.getUniqueId());
 926             if (!reqOpt.isPresent()) {
 927                 log.debug("Failed to find a requirement with uniqueId {} on a component with uniqueId {}",
 928                         reqAndRelationshipPair.getRequirementUid(), fromOriginComponent.getUniqueId());
 929                 result = false;
 930             }
 931         }
 932         if (result) {
 933             ComponentParametersView filter = new ComponentParametersView(true);
 934             filter.setIgnoreComponentInstances(false);
 935             filter.setIgnoreCapabilities(false);
 936             filter.setIgnoreGroups(false);
 937             getOriginRes = toscaOperationFacade.getToscaElement(toInstance.getActualComponentUid(), filter);
 938             if (getOriginRes.isRight()) {
 939                 log.debug("Failed to build substituted name for the requirement {}. Failed to get an origin component with uniqueId {}",
 940                         reqOpt.get().getName(), toInstance.getActualComponentUid());
 941                 result = false;
 942             }
 943         }
 944         if (result) {
 945             toOriginComponent = getOriginRes.left().value();
 946             capOpt = toOriginComponent.getCapabilities().get(reqOpt.get().getCapability()).stream()
 947                     .filter(c -> isCapabilityBelongToRelation(reqAndRelationshipPair, c)).findFirst();
 948             if (!capOpt.isPresent()) {
 949                 capOpt = findCapability(reqAndRelationshipPair, toOriginComponent, fromOriginComponent, reqOpt.get());
 950                 if(!capOpt.isPresent()){
 951                 result = false;
 952                 log.debug("Failed to find a capability with name {} on a component with uniqueId {}",
 953                         reqAndRelationshipPair.getCapability(), fromOriginComponent.getUniqueId());
 954                 }
 955             }
 956         }
 957         if (result) {
 958             result = buildAndAddRequirement(toscaRequirements, fromOriginComponent, toOriginComponent, capOpt.get(),
 959                     reqOpt.get(), reqAndRelationshipPair, toInstance, componentCache);
 960         }
 961         return result;
 962     }
 963
 964     private boolean isCapabilityBelongToRelation(RelationshipInfo reqAndRelationshipPair, CapabilityDefinition capability) {
 965         return capability.getName().equals(reqAndRelationshipPair.getCapability()) && (capability.getOwnerId() !=null && capability.getOwnerId().equals(reqAndRelationshipPair.getCapabilityOwnerId()));
 966     }
 967
 968     private Optional<CapabilityDefinition> findCapability(RelationshipInfo reqAndRelationshipPair, Component toOriginComponent, Component fromOriginComponent, RequirementDefinition requirement) {
 969         Optional<CapabilityDefinition> cap = toOriginComponent.getCapabilities().get(requirement.getCapability()).stream().filter(c -> c.getType().equals(requirement.getCapability())).findFirst();
 970         if (!cap.isPresent()) {
 971             log.debug("Failed to find a capability with name {} on a component with uniqueId {}", reqAndRelationshipPair.getCapability(), fromOriginComponent.getUniqueId());
 972         }
 973         return cap;
 974     }
 975
 976     private boolean buildAndAddRequirement(List<Map<String, ToscaTemplateRequirement>> toscaRequirements, Component fromOriginComponent, Component toOriginComponent, CapabilityDefinition capability, RequirementDefinition requirement, RelationshipInfo reqAndRelationshipPair, ComponentInstance toInstance, Map<String, Component> componentCache) {
 977         List<String> reducedPath = capability.getPath();
 978         if(capability.getOwnerId() !=null){
 979             reducedPath =   capabilityRequirementConverter.getReducedPathByOwner(capability.getPath() , capability.getOwnerId() );
 980         }
 981         Either<String, Boolean> buildCapNameRes = capabilityRequirementConverter.buildSubstitutedName(componentCache,
 982                 toOriginComponent, reducedPath, reqAndRelationshipPair.getCapability(), capability.getPreviousName());
 983         if (buildCapNameRes.isRight()) {
 984             log.debug(
 985                     "Failed to build a substituted capability name for the capability with name {} on a component with uniqueId {}",
 986                     reqAndRelationshipPair.getCapability(), fromOriginComponent.getUniqueId());
 987             return false;
 988         }
 989         Either<String, Boolean> buildReqNameRes  = capabilityRequirementConverter.buildSubstitutedName(componentCache, fromOriginComponent,
 990                 requirement.getPath(), reqAndRelationshipPair.getRequirement(), requirement.getPreviousName());
 991         if (buildReqNameRes.isRight()) {
 992             log.debug(
 993                     "Failed to build a substituted requirement name for the requirement with name {} on a component with uniqueId {}",
 994                     reqAndRelationshipPair.getRequirement(), fromOriginComponent.getUniqueId());
 995             return false;
 996         }
 997         ToscaTemplateRequirement toscaRequirement = new ToscaTemplateRequirement();
 998         Map<String, ToscaTemplateRequirement> toscaReqMap = new HashMap<>();
 999         toscaRequirement.setNode(toInstance.getName());
1000         toscaRequirement.setCapability(buildCapNameRes.left().value());
1001         toscaReqMap.put(buildReqNameRes.left().value(), toscaRequirement);
1002         toscaRequirements.add(toscaReqMap);
1003         return true;
1004     }
1005
1006     private Optional<RequirementDefinition> findRequirement(Component fromOriginComponent, Map<String, List<RequirementDefinition>> reqMap, RelationshipInfo reqAndRelationshipPair,  String fromInstanceId) {
1007         for(List<RequirementDefinition> reqList: reqMap.values()){
1008             Optional<RequirementDefinition> reqOpt = reqList.stream().filter(r -> isRequirementBelongToRelation(fromOriginComponent, reqAndRelationshipPair, r, fromInstanceId)).findFirst();
1009             if(reqOpt.isPresent()){
1010                 return reqOpt;
1011             }
1012         }
1013         return Optional.empty();
1014     }
1015
1016     /**
1017      * Allows detecting the requirement belonging to the received relationship
1018      * The detection logic is: A requirement belongs to a relationship IF 1.The
1019      * name of the requirement equals to the "requirement" field of the
1020      * relation; AND 2. In case of a non-atomic resource, OwnerId of the
1021      * requirement equals to requirementOwnerId of the relation OR uniqueId of
1022      * toInstance equals to capabilityOwnerId of the relation
1023      */
1024     private boolean isRequirementBelongToRelation(Component originComponent, RelationshipInfo reqAndRelationshipPair, RequirementDefinition requirement, String fromInstanceId) {
1025         if (!StringUtils.equals(requirement.getName(), reqAndRelationshipPair.getRequirement())) {
1026             log.debug("Failed to find a requirement with name {} and  reqAndRelationshipPair {}",
1027                     requirement.getName(), reqAndRelationshipPair.getRequirement());
1028             return false;
1029         }
1030         return ModelConverter.isAtomicComponent(originComponent) ||
1031                 isRequirementBelongToOwner(reqAndRelationshipPair, requirement, fromInstanceId, originComponent);
1032     }
1033
1034     private boolean isRequirementBelongToOwner(RelationshipInfo reqAndRelationshipPair, RequirementDefinition requirement, String fromInstanceId, Component originComponent) {
1035         return StringUtils.equals(requirement.getOwnerId(), reqAndRelationshipPair.getRequirementOwnerId()) || (isCvfc(originComponent) && StringUtils.equals(fromInstanceId, reqAndRelationshipPair.getRequirementOwnerId()));
1036     }
1037
1038     private boolean isCvfc(Component component) {
1039         return component.getComponentType() == ComponentTypeEnum.RESOURCE &&
1040                 ((Resource) component).getResourceType() == ResourceTypeEnum.CVFC;
1041     }
1042
1043     private Either<SubstitutionMapping, ToscaError> convertCapabilities(Component component,
1044             SubstitutionMapping substitutionMappings, Map<String, Component> componentCache) {
1045
1046         Either<SubstitutionMapping, ToscaError> result = Either.left(substitutionMappings);
1047         Either<Map<String, String[]>, ToscaError> toscaCapabilitiesRes = capabilityRequirementConverter
1048                 .convertSubstitutionMappingCapabilities(componentCache, component);
1049         if (toscaCapabilitiesRes.isRight()) {
1050             result = Either.right(toscaCapabilitiesRes.right().value());
1051             log.debug("Failed convert capabilities for the component {}. ", component.getName());
1052         } else if (isNotEmpty(toscaCapabilitiesRes.left().value())) {
1053             substitutionMappings.setCapabilities(toscaCapabilitiesRes.left().value());
1054             log.debug("Finish convert capabilities for the component {}. ", component.getName());
1055         }
1056         log.debug("Finished to convert capabilities for the component {}. ", component.getName());
1057         return result;
1058     }
1059
1060     private Either<ToscaNodeType, ToscaError> convertCapabilities(Map<String, Component> componentsCache, Component component, ToscaNodeType nodeType,
1061             Map<String, DataTypeDefinition> dataTypes) {
1062         Map<String, ToscaCapability> toscaCapabilities = capabilityRequirementConverter.convertCapabilities(componentsCache, component,
1063                 dataTypes);
1064         if (!toscaCapabilities.isEmpty()) {
1065             nodeType.setCapabilities(toscaCapabilities);
1066         }
1067         log.debug("Finish convert Capabilities for node type");
1068
1069         return Either.left(nodeType);
1070     }
1071
1072     private static class CustomRepresenter extends Representer {
1073         public CustomRepresenter() {
1074             super();
1075             // null representer is exceptional and it is stored as an instance
1076             // variable.
1077             this.nullRepresenter = new RepresentNull();
1078
1079         }
1080
1081         @Override
1082         protected NodeTuple representJavaBeanProperty(Object javaBean, Property property, Object propertyValue,
1083                 Tag customTag) {
1084             if (propertyValue == null) {
1085                 return null;
1086             } else {
1087                 // skip not relevant for Tosca property
1088                 if ("dependencies".equals(property.getName())) {
1089                     return null;
1090                 }
1091                 NodeTuple defaultNode = super.representJavaBeanProperty(javaBean, property, propertyValue, customTag);
1092
1093                 return "_defaultp_".equals(property.getName())
1094                         ? new NodeTuple(representData("default"), defaultNode.getValueNode()) : defaultNode;
1095             }
1096         }
1097
1098         @Override
1099         protected MappingNode representJavaBean(Set<Property> properties, Object javaBean) {
1100             // remove the bean type from the output yaml (!! ...)
1101             if (!classTags.containsKey(javaBean.getClass())) {
1102                 addClassTag(javaBean.getClass(), Tag.MAP);
1103             }
1104
1105             return super.representJavaBean(properties, javaBean);
1106         }
1107
1108         private class RepresentNull implements Represent {
1109             @Override
1110             public Node representData(Object data) {
1111                 // possible values are here http://yaml.org/type/null.html
1112                 return representScalar(Tag.NULL, "");
1113             }
1114         }
1115     }
1116
1117     private static class UnsortedPropertyUtils extends PropertyUtils {
1118         @Override
1119         protected Set<Property> createPropertySet(Class type, BeanAccess bAccess)
1120                 throws IntrospectionException {
1121             Collection<Property> fields = getPropertiesMap(type, BeanAccess.FIELD).values();
1122             return new LinkedHashSet<>(fields);
1123         }
1124     }
1125
1126 }
1127