1 files changed, 86 insertions, 0 deletions
diff --git a/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/AbstractPnfdTransformationEngine.java b/openecomp-be/lib/openecomp-tosca-converter-lib/openecomp-tosca-converter-core/src/main/java/org/openecomp/core/converter/impl/pnfd/AbstractPnfdTransformationEngine.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/AbstractPnfdTransformationEngine.java
@@ -0,0 +1,86 @@
+/*
+ * ============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();
+
+}