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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.components.merge.property;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang3.tuple.ImmutablePair;
import org.openecomp.sdc.be.model.DataTypeDefinition;
import org.openecomp.sdc.be.model.PropertyDefinition;
import org.openecomp.sdc.be.model.tosca.ToscaPropertyType;
import org.openecomp.sdc.be.utils.TypeUtils;
import org.springframework.stereotype.Component;
@Component
public class PropertyValueMerger {
@SuppressWarnings("unchecked")
/**
* merges property value oldVal into property value newVal recursively
* @param oldVal - cannot be {@code Null}
*/
protected Object merge(Object oldVal, Object newVal, List<String> inputNamesToMerge, String type, String innerType, Map<String, DataTypeDefinition> dataTypes) {
if (isEmptyValue(newVal)) {
return removeUnwantedGetInputValues(oldVal, inputNamesToMerge);
}
if (isMapTypeValues(oldVal, newVal)) {
return mergeMapValue((Map<String, Object>) oldVal, (Map<String, Object>) newVal, inputNamesToMerge, type, innerType, dataTypes);
}
if (isListTypeValues(oldVal, newVal)) {
return mergeListValue((List<Object>) oldVal, (List<Object>) newVal, inputNamesToMerge, innerType, dataTypes);
}
if (isSameTypeValues(oldVal, newVal)) {
return mergeScalarValue(oldVal, newVal);
}
return newVal;
}
private Map<String, Object> mergeMapValue(Map<String, Object> oldValMap, Map<String, Object> newValMap, List<String> inputNamesToMerge, String type, String innertType, Map<String, DataTypeDefinition> dataTypes) {
mergeEntriesExistInOldValue(oldValMap, newValMap, inputNamesToMerge, type, innertType, dataTypes);//continue the recursion
if (type != null && !type.equals("map")) {
setOldEntriesNotExistInNewValue(oldValMap, newValMap, inputNamesToMerge);
}
return newValMap;
}
private void mergeEntriesExistInOldValue(Map<String, Object> oldValMap, Map<String, Object> newValMap, List<String> inputNamesToMerge, String type, String innerType, Map<String, DataTypeDefinition> dataTypes) {
for (Map.Entry<String, Object> newValEntry : newValMap.entrySet()) {
Object oldVal = oldValMap.get(newValEntry.getKey());
if (oldVal != null) {
ImmutablePair<String, String> types = getTypeAndInnerTypePair(newValEntry.getKey(), type, innerType, dataTypes);
newValMap.put(newValEntry.getKey(), merge(oldVal, newValEntry.getValue(), inputNamesToMerge, types.getLeft(), types.getRight(), dataTypes));
}
}
}
private void setOldEntriesNotExistInNewValue(Map<String, Object> oldVal, Map<String, Object> newVal, List<String> getInputNamesToMerge) {
for (Map.Entry<String, Object> oldValEntry : oldVal.entrySet()) {
if (!isInputEntry(oldValEntry) || isInputToMerge(getInputNamesToMerge, oldValEntry)) {
Object oldValObj = oldValEntry.getValue();
newVal.computeIfAbsent(oldValEntry.getKey(), key -> removeUnwantedGetInputValues(oldValObj, getInputNamesToMerge));
}
}
}
private ImmutablePair<String, String> getTypeAndInnerTypePair(String propName, String type, String innerType, Map<String, DataTypeDefinition> dataTypes) {
if (type == null || (ToscaPropertyType.isScalarType(type) && ToscaPropertyType.isScalarType(innerType))) {
return ImmutablePair.of(innerType, null);
}
String newInnerType = null;
DataTypeDefinition innerTypeDef = dataTypes.get(type);
if (innerTypeDef != null) {
List<PropertyDefinition> properties = innerTypeDef.getProperties();
if (properties!= null) {
Optional<PropertyDefinition> optionalProperty = findProperty(properties, propName);
innerType = optionalProperty.map(PropertyDefinition::getType)
.orElse(innerType);
newInnerType = optionalProperty.map(PropertyDefinition::getSchemaType)
.orElse(null);
}
}
return ImmutablePair.of(innerType, newInnerType);
}
private Optional<PropertyDefinition> findProperty(List<PropertyDefinition> properties, String propName) {
return properties.stream()
.filter(p -> propName.equals(p.getName()))
.findFirst();
}
private List<Object> mergeListValue(List<Object> oldVal, List<Object> newVal, List<String> inputNamesToMerge, String innerType, Map<String, DataTypeDefinition> dataTypes) {
List<Object> mergedList = newVal;
if (oldVal.size() == newVal.size()) {
mergedList = mergeLists(oldVal, newVal, inputNamesToMerge, innerType, dataTypes);
}
return mergedList;
}
private List<Object> mergeLists(List<Object> oldVal, List<Object> newVal, List<String> inputNamesToMerge, String innerType, Map<String, DataTypeDefinition> dataTypes) {
int minListSize = Math.min(oldVal.size(), newVal.size());
List<Object> mergedList = new ArrayList<>();
for (int i = 0; i < minListSize; i++) {
Object mergedVal = merge(oldVal.get(i), newVal.get(i), inputNamesToMerge, innerType, null, dataTypes);
mergedList.add(mergedVal);
}
return mergedList;
}
private Object mergeScalarValue(Object oldVal, Object newVal) {
return isEmptyValue(newVal) ? oldVal : newVal;
}
static boolean isEmptyValue(Object val) {
return val == null ||
val instanceof String && StringUtils.isEmpty((String)val) ||
val instanceof Map && ((Map<?,?>) val).isEmpty() ||
val instanceof List && ((List<?>) val).isEmpty();
}
@SuppressWarnings("unchecked")
Object removeUnwantedGetInputValues(Object val, List<String> inputNamesToMerge) {
if (val instanceof Map) {
return removeUnwantedGetInputValues((Map<String, Object>) val, inputNamesToMerge);
}
if (val instanceof List) {
return removeUnwantedGetInputValues((List<Object>)val, inputNamesToMerge);
}
return val;
}
private List<Object> removeUnwantedGetInputValues(List<Object> listVal, List<String> inputNamesToMerge) {
return listVal.stream().map(val -> removeUnwantedGetInputValues(val, inputNamesToMerge)).collect(Collectors.toList());
}
private Map<String, Object> removeUnwantedGetInputValues(Map<String, Object> val, List<String> inputNamesToMerge) {
return val.entrySet().stream().filter(entry -> !isInputEntry(entry) || isInputToMerge(inputNamesToMerge, entry))
.collect(Collectors.toMap(Map.Entry::getKey, entry -> removeUnwantedGetInputValues(entry.getValue(), inputNamesToMerge)));
}
private boolean isInputToMerge(List<String> inputNamesToMerge, Map.Entry<String, Object> entry) {
return inputNamesToMerge.contains(retrieveInputName(entry.getValue()));
}
private boolean isMapTypeValues(Object oldVal, Object newVal) {
return newVal instanceof Map && oldVal instanceof Map;
}
private boolean isListTypeValues(Object oldVal, Object newVal) {
return newVal instanceof List && oldVal instanceof List;
}
private boolean isSameTypeValues(Object oldVal, Object newVal) {
return oldVal.getClass().equals(newVal.getClass());
}
private String retrieveInputName(Object inputValue) {
return inputValue instanceof List ? (String)((List<?>) inputValue).get(0) : (String)inputValue;
}
protected boolean isInputEntry(Map.Entry<String, Object> oldValEntry) {
return oldValEntry.getKey().equals(TypeUtils.ToscaTagNamesEnum.GET_INPUT.getElementName());
}
}
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