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 / PnfdConversionStrategyYamlParser.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/PnfdConversionStrategyYamlParser.java b/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/parser/PnfdConversionStrategyYamlParser.java
new file mode 100644 (file)
index 0000000..dee1674
--- /dev/null
+++ b/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/parser/PnfdConversionStrategyYamlParser.java
@@ -0,0 +1,74 @@
+/*
+ * ============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.pnfd.model.ConversionStrategyType;
+import org.openecomp.core.converter.pnfd.model.PnfTransformationToken;
+import org.openecomp.core.converter.impl.pnfd.strategy.CopyConversionStrategy;
+import org.openecomp.core.converter.pnfd.strategy.PnfdConversionStrategy;
+import org.openecomp.core.converter.impl.pnfd.strategy.ReplaceConversionStrategy;
+import org.openecomp.core.converter.impl.pnfd.strategy.ReplaceInListConversionStrategy;
+
+
+/**
+ * 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();
+    }
+
+}