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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 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.model.tosca.constraints;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import lombok.AccessLevel;
import lombok.AllArgsConstructor;
import lombok.NoArgsConstructor;
import org.openecomp.sdc.be.model.tosca.ToscaType;
import org.openecomp.sdc.be.model.tosca.constraints.exception.ConstraintValueDoNotMatchPropertyTypeException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Utility class to validate constraints types.
*/
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class ConstraintUtil {
private static final Logger logger = LoggerFactory.getLogger(ConstraintUtil.class);
/**
* Validates that the {@link ToscaType} specified is a {@link ToscaType#STRING}.
*
* @param propertyType The property tosca type.
* @throws ConstraintValueDoNotMatchPropertyTypeException In case the type is not {@link ToscaType#STRING}.
*/
public static void checkStringType(ToscaType propertyType) throws ConstraintValueDoNotMatchPropertyTypeException {
if (ToscaType.STRING != propertyType) {
throw new ConstraintValueDoNotMatchPropertyTypeException("Invalid property type <" + propertyType.toString() + ">");
}
}
/**
* Verify that the given tosca type is supported for comparison
*
* @param propertyType the tosca type to check
* @throws ConstraintValueDoNotMatchPropertyTypeException if the property type cannot be compared
*/
public static void checkComparableType(final ToscaType propertyType) throws ConstraintValueDoNotMatchPropertyTypeException {
// The validity of the value is already assured by us with our ToscaType.convert() method
// here we just want to check that the constraint is not used on unsupported type as boolean
final ToscaType toscaType = ToscaType.getToscaType(propertyType.getType());
switch (toscaType) {
case FLOAT:
case DOUBLE:
case INTEGER:
case LONG:
case TIMESTAMP:
case VERSION:
case STRING:
case SCALAR_UNIT_SIZE:
case SCALAR_UNIT_TIME:
case SCALAR_UNIT_BITRATE:
case SCALAR_UNIT_FREQUENCY:
break;
case BOOLEAN:
case SCALAR_UNIT:
throw new ConstraintValueDoNotMatchPropertyTypeException("Constraint is invalid for property type <" + propertyType.getType() + ">");
default:
throw new ConstraintValueDoNotMatchPropertyTypeException("Invalid property type <" + propertyType.getType() + ">");
}
}
/**
* Convert a string value following its type throw exception if it cannot be converted to a comparable
*
* @param propertyType the type of the property
* @param value the value to convert
* @return the converted comparable
* @throws ConstraintValueDoNotMatchPropertyTypeException if the converted value is not a comparable
*/
@SuppressWarnings("rawtypes")
public static Comparable convertToComparable(ToscaType propertyType, String value) {
final Object comparableObj = propertyType.convert(value);
if (!(comparableObj instanceof Comparable)) {
throw new IllegalArgumentException("Try to convert a value of a type which is not comparable [" + propertyType + "] to Comparable");
} else {
return (Comparable) comparableObj;
}
}
public static ConstraintInformation getConstraintInformation(Object constraint) throws IntrospectionException {
PropertyDescriptor firstDescriptor = null;
for (final PropertyDescriptor propertyDescriptor : Introspector.getBeanInfo(constraint.getClass()).getPropertyDescriptors()) {
if (propertyDescriptor.getReadMethod() != null && propertyDescriptor.getWriteMethod() != null) {
firstDescriptor = propertyDescriptor;
break;
}
}
if (firstDescriptor == null) {
throw new IntrospectionException("Cannot find constraint name");
}
try {
return new ConstraintInformation(firstDescriptor.getName(), firstDescriptor.getReadMethod().invoke(constraint), null, null);
} catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
throw new IntrospectionException("Cannot retrieve constraint reference " + e.getMessage());
}
}
public static <T> T parseToCollection(String value, TypeReference<T> typeReference) throws ConstraintValueDoNotMatchPropertyTypeException {
T objectMap;
ObjectMapper objectMapper = new ObjectMapper();
try {
objectMap = objectMapper.readValue(value, typeReference);
} catch (IOException e) {
logger.error(e.getMessage(), e);
throw new ConstraintValueDoNotMatchPropertyTypeException("The value [" + value + "] is not valid");
}
return objectMap;
}
@AllArgsConstructor
public static class ConstraintInformation {
private final String name;
private final Object reference;
private final String value;
private final String type;
}
}
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