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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2021 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.tosca;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonParser;
import com.google.gson.stream.JsonReader;
import java.io.StringReader;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import org.onap.sdc.tosca.datatypes.model.EntrySchema;
import org.openecomp.sdc.be.datatypes.elements.SchemaDefinition;
import org.openecomp.sdc.be.model.AttributeDefinition;
import org.openecomp.sdc.be.model.DataTypeDefinition;
import org.openecomp.sdc.be.model.tosca.ToscaPropertyType;
import org.openecomp.sdc.be.model.tosca.converters.DataTypePropertyConverter;
import org.openecomp.sdc.be.model.tosca.converters.ToscaMapValueConverter;
import org.openecomp.sdc.be.model.tosca.converters.ToscaValueBaseConverter;
import org.openecomp.sdc.be.tosca.model.ToscaAttribute;
import org.openecomp.sdc.be.tosca.model.ToscaSchemaDefinition;
import org.openecomp.sdc.common.log.enums.EcompLoggerErrorCode;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.openecomp.sdc.tosca.datatypes.ToscaFunctions;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
/**
* Handles conversions between attribute objects.
*/
@Component
@Scope(BeanDefinition.SCOPE_PROTOTYPE)
public class AttributeConverter {
private static final Logger LOGGER = Logger.getLogger(AttributeConverter.class);
private final Map<String, DataTypeDefinition> dataTypes;
private final ToscaMapValueConverter toscaMapValueConverter;
/**
* Creates an {@link AttributeConverter} with all the required data types.
*
* @param dataTypes all the data types required for the conversion
*/
public AttributeConverter(final Map<String, DataTypeDefinition> dataTypes) {
this.dataTypes = dataTypes;
toscaMapValueConverter = ToscaMapValueConverter.getInstance();
}
/**
* Converts an {@link AttributeDefinition} to a {@link ToscaAttribute}.
*
* @param attributeDefinition the attribute definition to be converted
* @return the {@link ToscaAttribute} instance based on the the given {@link AttributeDefinition} instance
*/
public ToscaAttribute convert(final AttributeDefinition attributeDefinition) {
final ToscaAttribute toscaAttribute = new ToscaAttribute();
LOGGER.trace("Converting attribute '{}' from type '{}' with default value '{}'", attributeDefinition.getName(), attributeDefinition.getType(),
attributeDefinition.getDefaultValue());
SchemaDefinition schema = attributeDefinition.getSchema();
if (schema != null && schema.getProperty() != null && schema.getProperty().getType() != null
&& StringUtils.isNotEmpty(schema.getProperty().getType())) {
final ToscaSchemaDefinition toscaSchemaDefinition = new ToscaSchemaDefinition();
toscaSchemaDefinition.setType(schema.getProperty().getType());
toscaSchemaDefinition.setDescription(schema.getProperty().getDescription());
toscaAttribute.setEntrySchema(toscaSchemaDefinition);
}
toscaAttribute.setType(attributeDefinition.getType());
toscaAttribute.setDescription(attributeDefinition.getDescription());
toscaAttribute.setStatus(attributeDefinition.getStatus());
final Object defaultValue = convertToToscaObject(attributeDefinition, attributeDefinition.getDefaultValue(), false);
if (defaultValue != null) {
toscaAttribute.setDefault(defaultValue);
}
final Object value = convertToToscaObject(attributeDefinition, attributeDefinition.getValue(), false);
if (value != null) {
toscaAttribute.setValue(value);
}
return toscaAttribute;
}
private ToscaSchemaDefinition convert(final EntrySchema entrySchema) {
if (entrySchema == null) {
return null;
}
final ToscaSchemaDefinition toscaSchemaDefinition = new ToscaSchemaDefinition();
toscaSchemaDefinition.setType(entrySchema.getType());
toscaSchemaDefinition.setDescription(entrySchema.getDescription());
return toscaSchemaDefinition;
}
private Object convertToToscaObject(final AttributeDefinition attributeDefinition,
String value,
final boolean preserveEmptyValue) {
final String name = attributeDefinition.getName();
final String attributeType = attributeDefinition.getType();
final EntrySchema schemaDefinition = attributeDefinition.getEntry_schema();
final String innerType = schemaDefinition == null ? attributeType : schemaDefinition.getType();
LOGGER.trace("Converting attribute '{}' of type '{}', value '{}', innerType '{}'", name, attributeType, value, innerType);
if (StringUtils.isEmpty(value)) {
value = getTypeDefaultValue(attributeType);
if (StringUtils.isEmpty(value)) {
return null;
}
}
try {
boolean isScalar = true;
ToscaPropertyType predefinedType = ToscaPropertyType.isValidType(attributeType);
if (predefinedType == null) {
//not predefined, search in existing data types
final DataTypeDefinition dataTypeDefinition = dataTypes.get(attributeType);
predefinedType = toscaMapValueConverter.isScalarType(dataTypeDefinition);
if (predefinedType == null) {
isScalar = false;
}
} else {
isScalar = ToscaPropertyType.getTypeIfScalar(predefinedType.getType()) != null;
}
final JsonElement valueAsJson = parseToJson(value);
if (isValueGetAttribute(valueAsJson)) {
return ToscaMapValueConverter.getInstance().handleComplexJsonValue(valueAsJson.getAsJsonObject());
}
//if it has a converter
if (predefinedType != null && predefinedType.getValueConverter() != null) {
LOGGER.trace("It's well defined type. convert it");
return predefinedType.getValueConverter().convertToToscaValue(value, innerType, dataTypes);
}
//no converter but scalar
if (isScalar) {
return toscaMapValueConverter.handleComplexJsonValue(valueAsJson);
}
//if it is a data type
return toscaMapValueConverter.convertDataTypeToToscaObject(innerType, dataTypes, null, false, valueAsJson, preserveEmptyValue);
} catch (final JsonParseException e) {
final String errorMsg = "Failed to parse json value";
LOGGER.error(EcompLoggerErrorCode.SCHEMA_ERROR, "Attribute Converter", errorMsg, e);
return null;
} catch (final Exception e) {
final String errorMsg = "Unexpected error occurred while converting attribute value to TOSCA";
LOGGER.error(EcompLoggerErrorCode.UNKNOWN_ERROR, "Attribute Converter", errorMsg, e);
return null;
}
}
private JsonElement parseToJson(final String value) {
final StringReader reader = new StringReader(value);
final JsonReader jsonReader = new JsonReader(reader);
jsonReader.setLenient(true);
return new JsonParser().parse(jsonReader);
}
private boolean isValueGetAttribute(final JsonElement valueAsJson) {
if (!valueAsJson.isJsonObject()) {
return false;
}
final JsonObject jsonObj = valueAsJson.getAsJsonObject();
return jsonObj.entrySet().size() == 1 && jsonObj.has(ToscaFunctions.GET_ATTRIBUTE.getFunctionName());
}
private String getTypeDefaultValue(final String attributeType) {
return DataTypePropertyConverter.getInstance().getDataTypePropertiesDefaultValuesRec(attributeType, dataTypes);
}
public void convertAndAddValue(final Map<String, Object> attribs,
final AttributeDefinition attribute) {
final Object convertedValue = convertToToscaObject(attribute, attribute.getValue(), false);
if (!ToscaValueBaseConverter.isEmptyObjectValue(convertedValue)) {
attribs.put(attribute.getName(), convertedValue);
}
}
}
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