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package org.openecomp.sdc.be.components.merge;
import fj.data.Either;
import org.openecomp.sdc.be.dao.api.ActionStatus;
import org.openecomp.sdc.be.dao.utils.MapUtil;
import org.openecomp.sdc.be.exception.SdcActionException;
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.Resource;
import org.openecomp.sdc.be.model.jsontitan.operations.ToscaOperationFacade;
import org.openecomp.sdc.be.model.operations.api.StorageOperationStatus;
import org.openecomp.sdc.common.log.wrappers.Logger;
import java.util.List;
import java.util.Map;
@org.springframework.stereotype.Component
public class TopologyComparator {
public static final Logger log = Logger.getLogger(TopologyComparator.class);
@javax.annotation.Resource
private RelationsComparator relationsComparator;
@javax.annotation.Resource
private ToscaOperationFacade toscaOperationFacade;
@javax.annotation.Resource
private ComponentsUtils componentsUtils;
/**
*
* @param oldResource the old version of the resource of which to check for topology change
* @param newResource the new version of the resource of which to check for topology change
* @return true if there was a topology change between the old resource and new resource or false otherwise
* in case the action to find topology change failed, an appropriate {@link ActionStatus} will be returned
*/
public Either<Boolean, ActionStatus> isTopologyChanged(Resource oldResource, Resource newResource) {
List<ComponentInstance> oldInstances = oldResource.getComponentInstances();
List<ComponentInstance> newInstances = newResource.getComponentInstances();
if (oldInstances != null && newInstances == null || oldInstances == null && newInstances != null) {
return Either.left(true);
}
if (oldInstances == null && newInstances == null) {
return Either.left(false);
}
Map<String, ComponentInstance> oldInstancesByName = MapUtil.toMap(oldInstances, ComponentInstance::getName);
Map<String, ComponentInstance> newInstancesByName = MapUtil.toMap(newInstances, ComponentInstance::getName);
return isTopologyInstancesChanged(oldResource, newResource, oldInstancesByName, newInstancesByName);
}
private Either<Boolean, ActionStatus> isTopologyInstancesChanged(Resource oldResource, Resource newResource, Map<String, ComponentInstance> oldInstancesByName, Map<String, ComponentInstance> newInstancesByName) {
try {
boolean isTopologyChanged = isInstanceNamesChanged(oldInstancesByName, newInstancesByName) ||
isInstanceTypesChanged(oldInstancesByName, newInstancesByName) ||
relationsComparator.isRelationsChanged(oldResource, newResource);
return Either.left(isTopologyChanged);
} catch (SdcActionException e) {
log.error("failed to merge entities of previous resource %s to current resource %s. reason: %s", oldResource.getUniqueId(), newResource.getUniqueId(), e.getActionStatus(), e);
return Either.right(e.getActionStatus());
}
}
private boolean isInstanceTypesChanged(Map<String, ComponentInstance> oldInstancesByName, Map<String, ComponentInstance> newInstancesByName) {
for (Map.Entry<String, ComponentInstance> instanceByName : newInstancesByName.entrySet()) {
ComponentInstance oldInstance = oldInstancesByName.get(instanceByName.getKey());
if (!isSameToscaTypeOrOriginComponent(oldInstance, instanceByName.getValue())) {
return true;
}
}
return false;
}
private boolean isInstanceNamesChanged(Map<String, ComponentInstance> oldInstanceByName, Map<String, ComponentInstance> newInstancesByName) {
return !oldInstanceByName.keySet().equals(newInstancesByName.keySet());
}
private boolean isSameToscaTypeOrOriginComponent(ComponentInstance oldInstance, ComponentInstance newInstance) {
return isSameToscaType(oldInstance, newInstance) ||
isSameOriginComponent(oldInstance, newInstance);
}
private boolean isSameToscaType(ComponentInstance oldInstance, ComponentInstance newInstance) {
return oldInstance.getToscaComponentName().equals(newInstance.getToscaComponentName());
}
private boolean isSameOriginComponent(ComponentInstance oldInstance, ComponentInstance newInstance) {
if (oldInstance.getComponentUid().equals(newInstance.getComponentUid())) {
return true;
}
Component oldOriginCmpt = toscaOperationFacade.getToscaElement(oldInstance.getComponentUid()).left().on(storageStatus -> throwSdcActionException(storageStatus, oldInstance));
Component newOriginCmpt = toscaOperationFacade.getToscaElement(newInstance.getComponentUid()).left().on(storageStatus -> throwSdcActionException(storageStatus, newInstance));
return oldOriginCmpt.getInvariantUUID().equals(newOriginCmpt.getInvariantUUID());
}
private Component throwSdcActionException(StorageOperationStatus storageOperationStatus, ComponentInstance cmptInstance) {
log.error("failed to fetch origin node type %s for instance %s", cmptInstance.getUniqueId(), cmptInstance.getComponentUid());
throw new SdcActionException(componentsUtils.convertFromStorageResponse(storageOperationStatus));
}
}
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