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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.parser;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import org.openecomp.core.converter.impl.pnfd.strategy.CopyConversionStrategy;
import org.openecomp.core.converter.impl.pnfd.strategy.ReplaceConversionStrategy;
import org.openecomp.core.converter.impl.pnfd.strategy.ReplaceInListConversionStrategy;
import org.openecomp.core.converter.pnfd.model.ConversionStrategyType;
import org.openecomp.core.converter.pnfd.model.PnfTransformationToken;
import org.openecomp.core.converter.pnfd.strategy.PnfdConversionStrategy;
/**
* Handles YAML from/to {@link PnfdConversionStrategy} conversions.
*/
public class PnfdConversionStrategyYamlParser {
private PnfdConversionStrategyYamlParser() {
}
/**
* Parses the given YAML object to a {@link PnfdConversionStrategy} instance.
*
* @param strategyYaml the YAML object representing a conversion strategy
* @return A new instance of {@link PnfdConversionStrategy}.
*/
public static Optional<PnfdConversionStrategy> parse(final Map<String, Object> strategyYaml) {
final Optional<ConversionStrategyType> optionalStrategy = ConversionStrategyType
.parse((String) strategyYaml.get(PnfTransformationToken.STRATEGY.getName()));
if (!optionalStrategy.isPresent()) {
return Optional.empty();
}
final ConversionStrategyType strategyType = optionalStrategy.get();
if (strategyType == ConversionStrategyType.COPY) {
return Optional.of(new CopyConversionStrategy());
}
if (strategyType == ConversionStrategyType.REPLACE) {
final Object from = strategyYaml.get(PnfTransformationToken.FROM.getName());
final Object to = strategyYaml.get(PnfTransformationToken.TO.getName());
return Optional.of(new ReplaceConversionStrategy(from, to));
}
if (strategyType == ConversionStrategyType.REPLACE_IN_LIST) {
return Optional
.of(new ReplaceInListConversionStrategy((List<Map<String, Object>>) strategyYaml.get(PnfTransformationToken.LIST.getName())));
}
return Optional.empty();
}
}
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