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package org.openecomp.sdc.be.components.merge.capability;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import org.apache.commons.collections.CollectionUtils;
import org.openecomp.sdc.be.components.merge.utils.MergeInstanceUtils;
import org.openecomp.sdc.be.dao.utils.MapUtil;
import org.openecomp.sdc.be.model.CapabilityDefinition;
import org.openecomp.sdc.be.model.Component;
import org.openecomp.sdc.be.model.ComponentInstance;
@org.springframework.stereotype.Component
public class SimpleCapabilityResolver implements CapabilityResolver {
private MergeInstanceUtils mergeInstanceUtils;
public SimpleCapabilityResolver(MergeInstanceUtils mergeInstanceUtils) {
this.mergeInstanceUtils = mergeInstanceUtils;
}
@Override
public Map<CapabilityDefinition, CapabilityDefinition> resolvePrevCapToNewCapability(Component container, Component prevInstanceOrigNode, String cmptInstanceId, List<CapabilityDefinition> prevCapabilities) {
Map<String, List<CapabilityDefinition>> newCapabilitiesByType = resolveInstanceCapabilities(container, cmptInstanceId).getCapabilities();
Map<String, String> oldCapOwnerToNewOwner = mapOldToNewCapabilitiesOwnerIds(container, prevInstanceOrigNode, cmptInstanceId, prevCapabilities);
return mapOldToNewCapabilities(prevCapabilities, newCapabilitiesByType, oldCapOwnerToNewOwner);
}
@Override
public Map<CapabilityDefinition, CapabilityDefinition> resolvePrevCapIdToNewCapability(ComponentInstance oldInstance, ComponentInstance currInstance) {
Map<String, List<CapabilityDefinition>> newCapabilitiesByType = currInstance.getCapabilities();
Map<String, String> oldCapOwnerToNewOwner = mergeInstanceUtils.mapOldToNewCapabilitiesOwnerIds(oldInstance, currInstance);
List<CapabilityDefinition> prevCapabilities = oldInstance.getCapabilities().values().stream().flatMap(Collection::stream).collect(Collectors.toList());
return mapOldToNewCapabilities(prevCapabilities, newCapabilitiesByType, oldCapOwnerToNewOwner);
}
private Map<CapabilityDefinition, CapabilityDefinition> mapOldToNewCapabilities(List<CapabilityDefinition> prevCapabilities, Map<String, List<CapabilityDefinition>> newCapabilitiesByType, Map<String, String> oldCapOwnerToNewOwner) {
Map<CapabilityDefinition, CapabilityDefinition> oldToNewCapability = prevCapabilities
.stream()
.collect(HashMap::new,
(resultMap, prevCap) -> mapOldToNewCapability(newCapabilitiesByType, oldCapOwnerToNewOwner, resultMap, prevCap),
HashMap::putAll);
removeNotFoundNewCapabilities(oldToNewCapability);
return oldToNewCapability;
}
private CapabilityDefinition mapOldToNewCapability(Map<String, List<CapabilityDefinition>> newCapabilitiesByType, Map<String, String> oldCapOwnerToNewOwner, Map<CapabilityDefinition, CapabilityDefinition> resultMap, CapabilityDefinition prevCap) {
return resultMap.put(prevCap, findCurrCapability(newCapabilitiesByType, prevCap, oldCapOwnerToNewOwner.get(prevCap.getOwnerId())));
}
private Map<String, String> mapOldToNewCapabilitiesOwnerIds(Component container, Component origInstanceNode, String cmptInstanceId, List<CapabilityDefinition> prevCapabilities) {
List<String> prevCapOwnerIds = prevCapabilities.stream().map(CapabilityDefinition::getOwnerId).distinct().collect(Collectors.toList());
return mergeInstanceUtils.mapOldToNewCapabilitiesOwnerIds(container, origInstanceNode, cmptInstanceId, prevCapOwnerIds);
}
private void removeNotFoundNewCapabilities(Map<CapabilityDefinition, CapabilityDefinition> oldToNewCapMap) {
oldToNewCapMap.values().removeIf(Objects::isNull);
}
private ComponentInstance resolveInstanceCapabilities(Component capabilityOwnerContainer, String cmptInstanceId) {
return MapUtil.toMap(capabilityOwnerContainer.getComponentInstances(), ComponentInstance::getUniqueId).get(cmptInstanceId);
}
private CapabilityDefinition findCurrCapability(Map<String, List<CapabilityDefinition>> capabilitiesByType, CapabilityDefinition oldCap, String newCapOwnerId) {
List<CapabilityDefinition> newCapOfType = capabilitiesByType.get(oldCap.getType());
if (newCapOwnerId == null || CollectionUtils.isEmpty(newCapOfType)) {
return null;
}
return newCapOfType.stream().filter(sameNameAndOwner(oldCap.getName(), newCapOwnerId))
.findFirst().orElse(null);
}
private Predicate<CapabilityDefinition> sameNameAndOwner(String capName, String newCapOwnerId) {
return newCap -> newCap.getName().equals(capName) && newCap.getOwnerId().equals(newCapOwnerId);
}
}
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