Implement PNFD Model driven conversion

[sdc.git] / openecomp-be / lib / openecomp-tosca-converter-lib / openecomp-tosca-converter-core / src / main / java / org / openecomp / core / converter / impl / pnfd / parser / TransformationYamlParser.java

diff --git a/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/parser/TransformationYamlParser.java b/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/parser/TransformationYamlParser.java
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+++ b/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/parser/TransformationYamlParser.java
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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 static org.openecomp.core.converter.pnfd.model.PnfTransformationToken.CONVERSIONS;
+import static org.openecomp.core.converter.pnfd.model.PnfTransformationToken.DESCRIPTION;
+import static org.openecomp.core.converter.pnfd.model.PnfTransformationToken.NAME;
+import static org.openecomp.core.converter.pnfd.model.PnfTransformationToken.QUERY;
+import static org.openecomp.core.converter.pnfd.model.PnfTransformationToken.TRANSFORMATION_FOR;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import org.apache.commons.collections.CollectionUtils;
+import org.openecomp.core.converter.pnfd.model.ConversionDefinition;
+import org.openecomp.core.converter.pnfd.model.Transformation;
+import org.openecomp.core.converter.pnfd.model.TransformationBlock;
+
+/**
+ * Handles YAML from/to {@link Transformation} conversions
+ */
+public class TransformationYamlParser {
+
+    private TransformationYamlParser() {
+
+    }
+
+    /**
+     * Parses the given YAML object to a {@link Transformation} instance.
+     * @param transformationYaml      the YAML object representing a transformation
+     * @return
+     *  A new instance of {@link Transformation}.
+     */
+    public static Transformation parse(final Map<String, Object> transformationYaml) {
+        final Transformation transformation = new Transformation();
+        transformation.setName((String) transformationYaml.get(NAME.getName()));
+        transformation.setDescription((String) transformationYaml.get(DESCRIPTION.getName()));
+
+        final String block = (String) transformationYaml.get(TRANSFORMATION_FOR.getName());
+        transformation.setBlock(TransformationBlock.parse(block).orElse(null));
+
+        transformation.setConversionQuery(
+            ConversionQueryYamlParser.parse(transformationYaml.get(QUERY.getName()))
+        );
+        transformation.setConversionDefinitionList(parseConversions(transformationYaml));
+
+        return transformation;
+    }
+
+    private static List<ConversionDefinition> parseConversions(final Map<String, Object> conversionYaml) {
+        final List<Object> conversionList = (List<Object>) conversionYaml.get(CONVERSIONS.getName());
+
+        if (CollectionUtils.isEmpty(conversionList)) {
+            return Collections.emptyList();
+        }
+
+        return conversionList.stream()
+            .map(conversion -> ConversionDefinitionYamlParser.parse((Map<String, Object>) conversion))
+            .collect(Collectors.toList());
+    }
+
+}