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/*
* -
* ============LICENSE_START=======================================================
* Copyright (C) 2022 Nordix Foundation.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.components.csar;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.apache.commons.lang3.StringUtils;
import org.openecomp.sdc.be.config.Configuration;
import org.openecomp.sdc.be.config.ConfigurationManager;
import org.openecomp.sdc.be.datatypes.elements.CustomYamlFunction;
import org.openecomp.sdc.be.datatypes.elements.ToscaConcatFunction;
import org.openecomp.sdc.be.datatypes.elements.ToscaCustomFunction;
import org.openecomp.sdc.be.datatypes.elements.ToscaFunction;
import org.openecomp.sdc.be.datatypes.elements.ToscaFunctionParameter;
import org.openecomp.sdc.be.datatypes.elements.ToscaFunctionType;
import org.openecomp.sdc.be.datatypes.elements.ToscaGetFunctionDataDefinition;
import org.openecomp.sdc.be.datatypes.elements.ToscaStringParameter;
import org.openecomp.sdc.be.datatypes.enums.PropertySource;
import org.openecomp.sdc.be.datatypes.tosca.ToscaGetFunctionType;
@org.springframework.stereotype.Component
public class ToscaFunctionYamlParsingHandler {
private static Optional<ToscaFunction> handleGetPropertyFunction(Map<String, Object> toscaFunctionPropertyValueMap, String functionType,
ToscaFunctionType toscaFunctionType) {
final ToscaGetFunctionDataDefinition toscaGetFunction = new ToscaGetFunctionDataDefinition();
toscaGetFunction.setFunctionType(
toscaFunctionType == ToscaFunctionType.GET_PROPERTY ? ToscaGetFunctionType.GET_PROPERTY : ToscaGetFunctionType.GET_ATTRIBUTE
);
final Object functionValueObj = toscaFunctionPropertyValueMap.get(functionType);
if (!(functionValueObj instanceof List)) {
return Optional.empty();
}
final List<String> functionParameters;
try {
functionParameters = ((List<Object>) functionValueObj).stream()
.map(object -> Objects.toString(object, null))
.collect(Collectors.toList());
} catch (final ClassCastException ignored) {
return Optional.empty();
}
if (functionParameters.size() < 2) {
return Optional.empty();
}
final String propertySourceType = functionParameters.get(0);
final PropertySource propertySource = PropertySource.findType(propertySourceType).orElse(null);
if (propertySource == PropertySource.SELF) {
toscaGetFunction.setPropertySource(propertySource);
} else {
toscaGetFunction.setPropertySource(PropertySource.INSTANCE);
toscaGetFunction.setSourceName(propertySourceType);
}
List<String> propertySourceIndex = functionParameters.subList(1, functionParameters.size());
String toscaIndexValue = propertySourceIndex.get((propertySourceIndex.size() - 1));
if (propertySourceIndex.size() > 1 && (toscaIndexValue.equalsIgnoreCase("INDEX") || StringUtils.isNumeric(toscaIndexValue))) {
toscaGetFunction.setPropertyPathFromSource(propertySourceIndex.subList(0, (propertySourceIndex.size() - 1)));
toscaGetFunction.setToscaIndex(toscaIndexValue);
} else {
toscaGetFunction.setPropertyPathFromSource(propertySourceIndex);
}
final String propertyName = toscaGetFunction.getPropertyPathFromSource().get(toscaGetFunction.getPropertyPathFromSource().size() - 1);
toscaGetFunction.setPropertyName(propertyName);
return Optional.of(toscaGetFunction);
}
private static Optional<ToscaFunction> handleGetInputFunction(Map<String, Object> toscaFunctionPropertyValueMap, String functionType) {
final ToscaGetFunctionDataDefinition toscaGetFunction = new ToscaGetFunctionDataDefinition();
toscaGetFunction.setFunctionType(ToscaGetFunctionType.GET_INPUT);
toscaGetFunction.setPropertySource(PropertySource.SELF);
final Object functionValueObj = toscaFunctionPropertyValueMap.get(functionType);
if (!(functionValueObj instanceof List) && !(functionValueObj instanceof String)) {
return Optional.empty();
}
if (functionValueObj instanceof String) {
toscaGetFunction.setPropertyPathFromSource(List.of((String) functionValueObj));
} else {
final List<String> functionParameters;
try {
functionParameters = ((List<Object>) functionValueObj).stream()
.map(object -> Objects.toString(object, null))
.collect(Collectors.toList());
} catch (final ClassCastException ignored) {
return Optional.empty();
}
String toscaIndexValue = functionParameters.get((functionParameters.size() - 1));
if (functionParameters.size() > 1 && (toscaIndexValue.equalsIgnoreCase("INDEX") || StringUtils.isNumeric(toscaIndexValue))) {
toscaGetFunction.setPropertyPathFromSource(functionParameters.subList(0, (functionParameters.size() - 1)));
toscaGetFunction.setToscaIndex(toscaIndexValue);
} else {
toscaGetFunction.setPropertyPathFromSource(functionParameters);
}
}
final String propertyName = toscaGetFunction.getPropertyPathFromSource().get(toscaGetFunction.getPropertyPathFromSource().size() - 1);
toscaGetFunction.setPropertyName(propertyName);
return Optional.of(toscaGetFunction);
}
/**
* Builds a {@link ToscaFunction} based on the property value. It will build the object with the maximum information available in the property
* value, as not all the necessary information can be extracted from it. It will only parse values from supported functions in
* {@link ToscaFunctionType}.
*
* @param toscaFunctionPropertyValueMap the value of a property calls a TOSCA function
* @return the partially filled {@link ToscaFunction} object
*/
public Optional<ToscaFunction> buildToscaFunctionBasedOnPropertyValue(final Map<String, Object> toscaFunctionPropertyValueMap) {
if (!isPropertyValueToscaFunction(toscaFunctionPropertyValueMap)) {
return Optional.empty();
}
final String functionType = toscaFunctionPropertyValueMap.keySet().iterator().next();
final ToscaFunctionType toscaFunctionType =
ToscaFunctionType.findType(functionType).orElse(functionType.startsWith("$") ? ToscaFunctionType.CUSTOM : null);
if (toscaFunctionType == null) {
return Optional.empty();
}
switch (toscaFunctionType) {
case GET_INPUT: {
return handleGetInputFunction(toscaFunctionPropertyValueMap, functionType);
}
case GET_PROPERTY:
case GET_ATTRIBUTE: {
return handleGetPropertyFunction(toscaFunctionPropertyValueMap, functionType, toscaFunctionType);
}
case CONCAT:
return handleConcatFunction(toscaFunctionPropertyValueMap, functionType);
case CUSTOM:
return handleCustomFunction(toscaFunctionPropertyValueMap, functionType);
default:
return Optional.empty();
}
}
private Optional<ToscaFunction> handleCustomFunction(Map<String, Object> toscaFunctionPropertyValueMap, String functionType) {
final ToscaCustomFunction toscaCustomFunction = new ToscaCustomFunction();
toscaCustomFunction.setName(functionType.substring(1));
final Object functionValueObj = toscaFunctionPropertyValueMap.get(functionType);
toscaCustomFunction.setToscaFunctionType(getCustomFunctionType(toscaCustomFunction.getName()));
if (ToscaFunctionType.GET_INPUT.equals(toscaCustomFunction.getToscaFunctionType())) {
return handelCustomFunctionGetInputType(toscaCustomFunction, functionValueObj);
}
return handelCustomFunctionCustomType(toscaCustomFunction, functionValueObj);
}
private Optional<ToscaFunction> handelCustomFunctionCustomType(ToscaCustomFunction toscaCustomFunction, Object functionValueObj) {
if (!(functionValueObj instanceof List)) {
return Optional.empty();
}
final List<Object> functionParameters = (List<Object>) functionValueObj;
functionParameters.forEach(parameter -> {
if (parameter instanceof String) {
final var stringParameter = new ToscaStringParameter();
stringParameter.setValue((String) parameter);
toscaCustomFunction.addParameter(stringParameter);
return;
}
if (isPropertyValueToscaFunction(parameter)) {
buildToscaFunctionBasedOnPropertyValue((Map<String, Object>) parameter).ifPresent(toscaFunction -> {
if (toscaFunction instanceof ToscaFunctionParameter) {
toscaCustomFunction.addParameter((ToscaFunctionParameter) toscaFunction);
}
});
return;
}
final var customYamlFunction = new CustomYamlFunction();
customYamlFunction.setYamlValue(parameter);
toscaCustomFunction.addParameter(customYamlFunction);
});
return Optional.of(toscaCustomFunction);
}
private Optional<ToscaFunction> handelCustomFunctionGetInputType(ToscaCustomFunction toscaCustomFunction, Object functionValueObj) {
if (!(functionValueObj instanceof String)) {
return Optional.empty();
}
final String parameter = (String) functionValueObj;
Map<String, Object> parameterMap = new HashMap<>();
parameterMap.put(ToscaFunctionType.GET_INPUT.getName(), parameter);
buildToscaFunctionBasedOnPropertyValue(parameterMap).ifPresent(toscaFunction -> {
if (toscaFunction instanceof ToscaFunctionParameter) {
toscaCustomFunction.addParameter((ToscaFunctionParameter) toscaFunction);
}
});
return Optional.of(toscaCustomFunction);
}
private ToscaFunctionType getCustomFunctionType(String name) {
List<Configuration.CustomToscaFunction> customFunctions =
ConfigurationManager.getConfigurationManager().getConfiguration().getDefaultCustomToscaFunctions();
if (customFunctions.isEmpty()) {
return ToscaFunctionType.CUSTOM;
}
Optional<Configuration.CustomToscaFunction> optionalFunc = customFunctions.stream().filter(func -> func.getName().equals(name)).findFirst();
if (optionalFunc.isEmpty()) {
return ToscaFunctionType.CUSTOM;
}
String type = optionalFunc.get().getType();
return ToscaFunctionType.findType(type).get();
}
/**
* Checks if the property value is a supported TOSCA function.
*
* @param propValueObj the value of a property
* @return {@code true} if the value is a supported TOSCA function, {@code false} otherwise
*/
public boolean isPropertyValueToscaFunction(final Object propValueObj) {
if (propValueObj instanceof Map) {
final Map<String, Object> propValueMap = (Map<String, Object>) propValueObj;
if (propValueMap.keySet().size() > 1) {
return false;
}
if (propValueMap.keySet().stream().anyMatch(keyValue -> keyValue.startsWith("$"))) {
return true;
}
return Stream.of(ToscaFunctionType.GET_INPUT, ToscaFunctionType.GET_PROPERTY, ToscaFunctionType.GET_ATTRIBUTE, ToscaFunctionType.CONCAT)
.anyMatch(type -> propValueMap.containsKey(type.getName()));
}
return false;
}
private Optional<ToscaFunction> handleConcatFunction(Map<String, Object> toscaFunctionPropertyValueMap, String functionType) {
final ToscaConcatFunction toscaConcatFunction = new ToscaConcatFunction();
final Object functionValueObj = toscaFunctionPropertyValueMap.get(functionType);
if (!(functionValueObj instanceof List)) {
return Optional.empty();
}
final List<Object> functionParameters = (List<Object>) functionValueObj;
if (functionParameters.size() < 2) {
return Optional.empty();
}
functionParameters.forEach(parameter -> {
if (parameter instanceof String) {
final var stringParameter = new ToscaStringParameter();
stringParameter.setValue((String) parameter);
toscaConcatFunction.addParameter(stringParameter);
return;
}
if (isPropertyValueToscaFunction(parameter)) {
buildToscaFunctionBasedOnPropertyValue((Map<String, Object>) parameter).ifPresent(toscaFunction -> {
if (toscaFunction instanceof ToscaFunctionParameter) {
toscaConcatFunction.addParameter((ToscaFunctionParameter) toscaFunction);
}
});
return;
}
final var customYamlFunction = new CustomYamlFunction();
customYamlFunction.setYamlValue(parameter);
toscaConcatFunction.addParameter(customYamlFunction);
});
return Optional.of(toscaConcatFunction);
}
}
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