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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2018 Ericsson. All rights reserved.
* Modifications Copyright (C) 2021 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.apex.context.impl.schema.java;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonSerializer;
import com.google.gson.TypeAdapter;
import lombok.Getter;
import lombok.Setter;
import org.apache.commons.lang3.StringUtils;
import org.onap.policy.common.parameters.BeanValidationResult;
import org.onap.policy.common.parameters.BeanValidator;
import org.onap.policy.common.parameters.ParameterGroup;
import org.onap.policy.common.parameters.ValidationStatus;
import org.slf4j.ext.XLogger;
import org.slf4j.ext.XLoggerFactory;
//@formatter:off
/**
* Event protocol parameters for JSON as an event protocol.
*
* <p>The parameters for this plugin are:
* <ol>
* <li>adaptedClass: The name of the class being adapted.
* <li>adapterClass: the JSON adapter class to use for the adapted class.
* </ol>
*
* @author Liam Fallon (liam.fallon@ericsson.com)
*/
//@formatter:on
@Getter
@Setter
public class JavaSchemaHelperJsonAdapterParameters implements ParameterGroup {
private static final XLogger LOGGER = XLoggerFactory.getXLogger(JavaSchemaHelperJsonAdapterParameters.class);
// Recurring string constants
private static final String ADAPTED_CLASS = "adaptedClass";
private static final String ADAPTOR_CLASS = "adaptorClass";
private String adaptedClass;
private String adaptorClass;
/**
* {@inheritDoc}.
*/
@Override
public String getName() {
return getAdaptedClass();
}
/**
* {@inheritDoc}.
*/
@Override
public void setName(String adaptedClass) {
setAdaptedClass(adaptedClass);
}
/**
* Gets the adapted class.
*
* @return the adapted class
*/
public Class<?> getAdaptedClazz() {
if (adaptedClass == null) {
return null;
}
try {
return Class.forName(adaptedClass);
} catch (final ClassNotFoundException e) {
LOGGER.warn("class \"" + adaptedClass + "\" not found: ", e);
return null;
}
}
/**
* Gets the adaptor class.
*
* @return the adaptor class
*/
public Class<?> getAdaptorClazz() {
if (adaptorClass == null) {
return null;
}
try {
return Class.forName(adaptorClass);
} catch (final ClassNotFoundException e) {
LOGGER.warn("class \"" + adaptorClass + "\" not found: ", e);
return null;
}
}
/**
* {@inheritDoc}.
*/
@Override
public BeanValidationResult validate() {
final BeanValidationResult result = new BeanValidator().validateTop(getClass().getSimpleName(), this);
getClass(ADAPTED_CLASS, adaptedClass, result);
Class<?> adaptorClazz = getClass(ADAPTOR_CLASS, adaptorClass, result);
if (adaptorClazz != null) {
String errorMessage = null;
if (TypeAdapter.class.isAssignableFrom(adaptorClazz)) {
return result;
}
if (!JsonSerializer.class.isAssignableFrom(adaptorClazz)) {
errorMessage = "class is not a JsonSerializer";
}
if (!JsonDeserializer.class.isAssignableFrom(adaptorClazz)) {
if (errorMessage == null) {
errorMessage = "class is not a JsonDeserializer";
} else {
errorMessage = "class is not a JsonSerializer or JsonDeserializer";
}
}
if (errorMessage != null) {
result.addResult(ADAPTOR_CLASS, adaptorClazz, ValidationStatus.INVALID, errorMessage);
}
}
return result;
}
/**
* Check a class exists.
*
* @param parameterName the parameter name of the class to check for existence
* @param classToCheck the class to check for existence
* @param result the result of the check
*/
private Class<?> getClass(String parameterName, String classToCheck, final BeanValidationResult result) {
if (StringUtils.isBlank(classToCheck)) {
result.addResult(parameterName, classToCheck, ValidationStatus.INVALID, "parameter is null or blank");
return null;
}
// Get the class for the event protocol
try {
return Class.forName(classToCheck);
} catch (final ClassNotFoundException e) {
result.addResult(parameterName, classToCheck, ValidationStatus.INVALID,
"class not found: " + e.getMessage());
LOGGER.warn("class not found: ", e);
return null;
}
}
}
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