1 files changed, 75 insertions, 0 deletions
diff --git a/catalog-be/src/main/java/org/openecomp/sdc/be/components/merge/instance/ComponentInstanceRelationMergeCommand.java b/catalog-be/src/main/java/org/openecomp/sdc/be/components/merge/instance/ComponentInstanceRelationMergeCommand.java
new file mode 100644
index 0000000000..317f528ffc
--- /dev/null
+++ b/catalog-be/src/main/java/org/openecomp/sdc/be/components/merge/instance/ComponentInstanceRelationMergeCommand.java
@@ -0,0 +1,75 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.components.merge.instance;
+
+import fj.data.Either;
+import org.apache.commons.collections.CollectionUtils;
+import org.openecomp.sdc.be.components.merge.VspComponentsMergeCommand;
+import org.openecomp.sdc.be.components.merge.utils.MergeInstanceUtils;
+import org.openecomp.sdc.be.dao.api.ActionStatus;
+import org.openecomp.sdc.be.impl.ComponentsUtils;
+import org.openecomp.sdc.be.model.Component;
+import org.openecomp.sdc.be.model.RequirementCapabilityRelDef;
+import org.openecomp.sdc.be.model.jsonjanusgraph.operations.ToscaOperationFacade;
+import org.openecomp.sdc.be.model.operations.api.StorageOperationStatus;
+import org.springframework.core.annotation.Order;
+
+import java.util.List;
+
+import static org.openecomp.sdc.be.components.merge.resource.ResourceDataMergeBusinessLogic.LAST_COMMAND;
+
+@org.springframework.stereotype.Component
+@Order(LAST_COMMAND)//must run after all merge commands
+public class ComponentInstanceRelationMergeCommand implements VspComponentsMergeCommand {
+
+    private final ToscaOperationFacade toscaOperationFacade;
+    private final MergeInstanceUtils mergeInstanceUtils;
+    private final ComponentsUtils componentsUtils;
+
+    public ComponentInstanceRelationMergeCommand(ToscaOperationFacade toscaOperationFacade, MergeInstanceUtils mergeInstanceUtils, ComponentsUtils componentsUtils) {
+        this.toscaOperationFacade = toscaOperationFacade;
+        this.mergeInstanceUtils = mergeInstanceUtils;
+        this.componentsUtils = componentsUtils;
+    }
+    @Override
+    public ActionStatus mergeComponents(Component prevComponent, Component currentComponent) {
+        List<RequirementCapabilityRelDef> updatedUiRelations = mergeInstanceUtils.getUpdatedUiRelations(prevComponent, currentComponent);
+        if(CollectionUtils.isNotEmpty(updatedUiRelations)){
+            return associateResourceInstances(currentComponent, updatedUiRelations);
+        }
+        return ActionStatus.OK;
+    }
+
+    private ActionStatus associateResourceInstances(Component currentComponent, List<RequirementCapabilityRelDef> updatedUiRelations) {
+        Either<List<RequirementCapabilityRelDef>, StorageOperationStatus> listStorageOperationStatusEither = toscaOperationFacade.associateResourceInstances(null, currentComponent.getUniqueId(), updatedUiRelations);
+        if (listStorageOperationStatusEither.isLeft()) {
+            currentComponent.getComponentInstancesRelations().addAll(updatedUiRelations);
+        } else {
+            return componentsUtils.convertFromStorageResponse(listStorageOperationStatusEither.right().value());
+        }
+        return ActionStatus.OK;
+    }
+
+    @Override
+    public String description() {
+        return "merge component instances from old component to new component";
+    }
+}