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package org.openecomp.sdc.be.components.merge.instance;
import fj.data.Either;
import org.apache.commons.lang3.StringUtils;
import org.openecomp.sdc.be.components.merge.utils.CapabilityOwner;
import org.openecomp.sdc.be.components.merge.utils.ComponentInstanceBuildingBlocks;
import org.openecomp.sdc.be.components.merge.utils.MergeInstanceUtils;
import org.openecomp.sdc.be.dao.utils.MapUtil;
import org.openecomp.sdc.be.impl.ComponentsUtils;
import org.openecomp.sdc.be.model.Component;
import org.openecomp.sdc.be.model.ComponentInstance;
import org.openecomp.sdc.be.model.RequirementCapabilityRelDef;
import org.openecomp.sdc.be.model.User;
import org.openecomp.sdc.be.model.jsonjanusgraph.operations.ToscaOperationFacade;
import org.openecomp.sdc.be.model.operations.api.StorageOperationStatus;
import org.openecomp.sdc.common.datastructure.Wrapper;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.openecomp.sdc.exception.ResponseFormat;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@org.springframework.stereotype.Component("ComponentInstanceRelashionMerge")
public class ComponentInstanceRelationMerge implements ComponentInstanceMergeInterface {
private static final Logger log = Logger.getLogger(ComponentInstanceRelationMerge.class);
private final ComponentsUtils componentsUtils;
private final MergeInstanceUtils mergeInstanceUtils;
private final ToscaOperationFacade toscaOperationFacade;
public ComponentInstanceRelationMerge(ComponentsUtils componentsUtils, MergeInstanceUtils mergeInstanceUtils, ToscaOperationFacade toscaOperationFacade) {
this.componentsUtils = componentsUtils;
this.mergeInstanceUtils = mergeInstanceUtils;
this.toscaOperationFacade = toscaOperationFacade;
}
@Override
public void saveDataBeforeMerge(DataForMergeHolder dataHolder, Component containerComponent, ComponentInstance currentResourceInstance, Component originComponent) {
//All Relationships - container (service) holds info about all relations
//Filter by UniqueId in from/to
List<RequirementCapabilityRelDef> relationsFrom = getRelations(RequirementCapabilityRelDef::getFromNode,
containerComponent,
currentResourceInstance);
List<RequirementCapabilityRelDef> relationsTo = getRelations(RequirementCapabilityRelDef::getToNode,
containerComponent,
currentResourceInstance);
if (!relationsFrom.isEmpty() || !relationsTo.isEmpty()) {
ComponentInstanceBuildingBlocks instBuildingBlocks = mergeInstanceUtils.getInstanceAtomicBuildingBlocks(currentResourceInstance, originComponent);
if (instBuildingBlocks != null) {
List<RelationMergeInfo> fromRelInfoList = convert(relationsFrom, rel -> mergeInstanceUtils.mapRelationRequirement(rel, instBuildingBlocks.getVfcInstances()));
List<RelationMergeInfo> toRelInfoList = convert(relationsTo, rel -> mergeInstanceUtils.mapRelationCapability(rel, instBuildingBlocks.getCapabilitiesOwners()));
// Encapsulate all needed info in one container
ContainerRelationsMergeInfo containerRelationsMergeInfo = new ContainerRelationsMergeInfo(fromRelInfoList, toRelInfoList);
// Save it
dataHolder.setVfRelationsInfo(containerRelationsMergeInfo);
}
}
else {
log.debug("No relations relevant to currentResourceInstance {} found in container component", currentResourceInstance);
}
}
@Override
public Either<Component, ResponseFormat> mergeDataAfterCreate(User user, DataForMergeHolder dataHolder, Component updatedContainerComponent, String newInstanceId) {
Wrapper<Either<Component, ResponseFormat>> resultWrapper = new Wrapper<>();
ContainerRelationsMergeInfo containerRelationsMergeInfo = getRelationsMergeInfo(dataHolder, updatedContainerComponent, resultWrapper);
ComponentInstance newComponentInstance = null;
if(resultWrapper.isEmpty()) {
//Component Instance
newComponentInstance = loadComponentInstance(updatedContainerComponent, newInstanceId, resultWrapper);
}
if(resultWrapper.isEmpty() && containerRelationsMergeInfo != null) {
// Load VFCI and filter them by name
ComponentInstanceBuildingBlocks instanceBuildBlocks = mergeInstanceUtils.getInstanceAtomicBuildingBlocks(newComponentInstance);
if(instanceBuildBlocks != null) {
// Process Relationships
Stream<RequirementCapabilityRelDef> toRelationsInfoStream = getCapabilitiesRelationInfoStream(updatedContainerComponent, newInstanceId, containerRelationsMergeInfo, instanceBuildBlocks);
Stream<RequirementCapabilityRelDef> fromRelationsInfoStream = getRequirementRelationsInfoStream(updatedContainerComponent, newInstanceId, containerRelationsMergeInfo, instanceBuildBlocks);
List<RequirementCapabilityRelDef> updatedRelations = getUpdatedRelations(toRelationsInfoStream, fromRelationsInfoStream);
StorageOperationStatus saveResult = toscaOperationFacade.associateResourceInstances(updatedContainerComponent.getUniqueId(), updatedRelations);
if (saveResult == StorageOperationStatus.OK) {
resultWrapper.setInnerElement(Either.left(updatedContainerComponent));
}
else {
log.debug("Failed to associate instances of resource {} status is {}", updatedContainerComponent.getUniqueId(), saveResult);
ResponseFormat responseFormat = componentsUtils.getResponseFormat(componentsUtils.convertFromStorageResponse(saveResult), updatedContainerComponent.getUniqueId());
resultWrapper.setInnerElement(Either.right(responseFormat));
}
}
}
return resultWrapper.getInnerElement();
}
private Stream<RequirementCapabilityRelDef> getRequirementRelationsInfoStream(Component updatedContainerComponent, String newInstanceId, ContainerRelationsMergeInfo containerRelationsMergeInfo, ComponentInstanceBuildingBlocks instanceBuildBlocks) {
Map<String, ComponentInstance> vfciMap = MapUtil.toMap(instanceBuildBlocks.getVfcInstances(), ComponentInstance::getName, (p1, p2) -> p1);
List<RelationMergeInfo> fromRelationsInfo = containerRelationsMergeInfo.getFromRelationsInfo();
Stream<RequirementCapabilityRelDef> fromRelationsInfoStream = null;
if( fromRelationsInfo != null) {
fromRelationsInfoStream = fromRelationsInfo.stream()
.map(oldReqInfo -> mergeInstanceUtils.restoreRequirementRelation(oldReqInfo, newInstanceId, vfciMap, updatedContainerComponent))
.filter(Objects::nonNull);
}
return fromRelationsInfoStream;
}
private Stream<RequirementCapabilityRelDef> getCapabilitiesRelationInfoStream(Component updatedContainerComponent, String newInstanceId, ContainerRelationsMergeInfo containerRelationsMergeInfo, ComponentInstanceBuildingBlocks instanceBuildBlocks) {
Map<String, CapabilityOwner> capOwnersByName = MapUtil.toMap(instanceBuildBlocks.getCapabilitiesOwners(), CapabilityOwner::getName, (p1, p2) -> p1);
List<RelationMergeInfo> toRelationsInfo = containerRelationsMergeInfo.getToRelationsInfo();
Stream<RequirementCapabilityRelDef> toRelationsInfoStream = null;
if (toRelationsInfo != null) {
toRelationsInfoStream = toRelationsInfo.stream()
.map(oldCapInfo -> mergeInstanceUtils.restoreCapabilityRelation(oldCapInfo, newInstanceId, capOwnersByName, updatedContainerComponent))
.filter(Objects::nonNull);
}
return toRelationsInfoStream;
}
/**
* @param containerComponent
* @param instanceId
* @param resultWrapper
* @return
*/
private ComponentInstance loadComponentInstance(Component containerComponent, String instanceId,
Wrapper<Either<Component, ResponseFormat>> resultWrapper) {
ComponentInstance componentInstance = containerComponent.getComponentInstanceById(instanceId).orElse(null);
if (componentInstance == null) {
log.debug("Failed to get VF instance by new VF instance ID: {}", instanceId);
resultWrapper.setInnerElement(Either.left(containerComponent));
}
return componentInstance;
}
private List<RequirementCapabilityRelDef> getUpdatedRelations(Stream<RequirementCapabilityRelDef> toRelationsInfoStream,
Stream<RequirementCapabilityRelDef> fromRelationsInfoStream) {
Stream<RequirementCapabilityRelDef> updatedRelationsStream = Stream.empty();
if (toRelationsInfoStream != null) {
updatedRelationsStream = Stream.concat(updatedRelationsStream, toRelationsInfoStream);
}
if (fromRelationsInfoStream != null) {
updatedRelationsStream = Stream.concat(updatedRelationsStream, fromRelationsInfoStream);
}
return updatedRelationsStream.collect(Collectors.toList());
}
private List<RequirementCapabilityRelDef> getRelations(Function<RequirementCapabilityRelDef, String> getNodeFunc,
Component containerComponent,
ComponentInstance currentResourceInstance) {
final List<RequirementCapabilityRelDef> componentInstancesRelations = containerComponent.getComponentInstancesRelations();
if (componentInstancesRelations == null) {
return Collections.emptyList();
}
final String vfInstanceId = currentResourceInstance.getUniqueId();
return componentInstancesRelations.stream()
.filter(rel -> StringUtils.equals(getNodeFunc.apply(rel), vfInstanceId))
.collect(Collectors.toList());
}
private List<RelationMergeInfo> convert(List<RequirementCapabilityRelDef> relationsDef,
Function<RequirementCapabilityRelDef, RelationMergeInfo> mapFunc) {
return relationsDef.stream()
.map(mapFunc)
.filter(Objects::nonNull)
.collect(Collectors.toList());
}
private ContainerRelationsMergeInfo getRelationsMergeInfo(DataForMergeHolder dataHolder,
Component updatedContainerComponent,
Wrapper<Either<Component, ResponseFormat>> resultWrapper) {
ContainerRelationsMergeInfo containerRelationsMergeInfo = dataHolder.getContainerRelationsMergeInfo();
if (containerRelationsMergeInfo == null) {
log.debug("There is no info about relations should be restored.");
resultWrapper.setInnerElement(Either.left(updatedContainerComponent));
}
return containerRelationsMergeInfo;
}
}
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