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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2019 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.core.converter.impl.pnfd;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map;
import org.onap.sdc.tosca.datatypes.model.ServiceTemplate;
import org.openecomp.core.converter.ServiceTemplateReaderService;
import org.openecomp.core.converter.pnfd.PnfdTransformationEngine;
import org.openecomp.core.converter.pnfd.model.Transformation;
import org.openecomp.core.converter.pnfd.model.TransformationBlock;
import org.openecomp.core.converter.pnfd.model.TransformationDescription;
import org.openecomp.sdc.logging.api.Logger;
import org.openecomp.sdc.logging.api.LoggerFactory;
/**
* Engine that manages the PNF Descriptor transformation process.
*/
public abstract class AbstractPnfdTransformationEngine implements PnfdTransformationEngine {
private static final Logger LOGGER = LoggerFactory.getLogger(AbstractPnfdTransformationEngine.class);
protected final ServiceTemplate templateTo;
protected final ServiceTemplateReaderService templateFrom;
private final PnfdTransformationDescriptorReader pnfdTransformationDescriptorReader =
new PnfdTransformationDescriptorReader();
protected TransformationDescription transformationDescription;
protected Map<TransformationBlock, List<Transformation>> transformationGroupByBlockMap;
private final String descriptorResourcePath;
public AbstractPnfdTransformationEngine(final ServiceTemplateReaderService templateFrom,
final ServiceTemplate templateTo) {
this(templateFrom, templateTo, "pnfdTransformationTemplate/model-driven-conversion.yaml");
}
//used for tests purposes
AbstractPnfdTransformationEngine(final ServiceTemplateReaderService templateFrom,
final ServiceTemplate templateTo,
final String descriptorResourcePath) {
this.templateFrom = templateFrom;
this.templateTo = templateTo;
this.descriptorResourcePath = descriptorResourcePath;
}
/**
* Gets and Reads the transformation description yaml file.
*/
protected void readDefinition() {
try (final InputStream resourceAsStream = getClass().getClassLoader().getResourceAsStream(descriptorResourcePath)) {
if (resourceAsStream == null) {
if (LOGGER.isErrorEnabled()) {
LOGGER.error("Could not find resource '{}'", descriptorResourcePath);
}
return;
}
transformationDescription = pnfdTransformationDescriptorReader.parse(resourceAsStream);
} catch (final IOException e) {
LOGGER.error("Could not find resource '{}'", descriptorResourcePath, e);
}
}
/**
* Executes all transformations specified in the descriptor.
*/
protected abstract void executeTransformations();
}
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