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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2020 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.onap.policy.models.tosca.simple.provider;
import lombok.NonNull;
import org.onap.policy.models.base.PfConceptKey;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.dao.PfDao;
import org.onap.policy.models.tosca.simple.concepts.JpaToscaServiceTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class provides CRUD to and from the database en bloc using Service Template reads and writes.
*
* @author Liam Fallon (liam.fallon@est.tech)
*/
public class SimpleToscaServiceTemplateProvider {
private static final Logger LOGGER = LoggerFactory.getLogger(SimpleToscaServiceTemplateProvider.class);
// There is only one service template in the database becasue TOSCA does not specify names and versions on service
// templates.
private static final PfConceptKey DEFAULT_SERVICE_TEMPLATE_KEY =
new PfConceptKey(JpaToscaServiceTemplate.DEFAULT_NAME, JpaToscaServiceTemplate.DEFAULT_VERSION);
/**
* Get a service template from the database.
*
* @param dao the DAO to use to access the database
* @return the Service Template read from the database
* @throws PfModelException on errors getting the service template
*/
public JpaToscaServiceTemplate read(@NonNull final PfDao dao) throws PfModelException {
LOGGER.debug("->read");
// Get the service template
JpaToscaServiceTemplate serviceTemplate = dao.get(JpaToscaServiceTemplate.class, DEFAULT_SERVICE_TEMPLATE_KEY);
LOGGER.debug("<-read: serviceTemplate={}", serviceTemplate);
return serviceTemplate;
}
/**
* Write a service template to the database.
*
* @param dao the DAO to use to access the database
* @param serviceTemplate the service template to be written
* @return the TOSCA service template overwritten by this method
* @throws PfModelException on errors writing the service template
*/
public JpaToscaServiceTemplate write(@NonNull final PfDao dao,
@NonNull final JpaToscaServiceTemplate serviceTemplate) throws PfModelException {
LOGGER.debug("->write: serviceTempalate={}", serviceTemplate);
JpaToscaServiceTemplate overwrittenServiceTemplate =
dao.get(JpaToscaServiceTemplate.class, serviceTemplate.getKey());
if (overwrittenServiceTemplate != null) {
dao.delete(overwrittenServiceTemplate);
}
dao.create(serviceTemplate);
LOGGER.debug("<-write: overwrittenServiceTemplate={}", overwrittenServiceTemplate);
return overwrittenServiceTemplate;
}
/**
* Delete a service template from the database.
*
* @param dao the DAO to use to access the database
* @return the Service Template stored in the database
* @throws PfModelException on errors getting the service template
*/
public JpaToscaServiceTemplate delete(@NonNull final PfDao dao) throws PfModelException {
LOGGER.debug("->delete");
JpaToscaServiceTemplate serviceTemplateToBeDeleted =
dao.get(JpaToscaServiceTemplate.class, DEFAULT_SERVICE_TEMPLATE_KEY);
dao.delete(serviceTemplateToBeDeleted);
LOGGER.debug("<-delete: serviceTemplate={}", serviceTemplateToBeDeleted);
return serviceTemplateToBeDeleted;
}
}
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