1 files changed, 122 insertions, 0 deletions
diff --git a/catalog-model/src/main/java/org/openecomp/sdc/be/model/jsonjanusgraph/config/ContainerInstanceTypesData.java b/catalog-model/src/main/java/org/openecomp/sdc/be/model/jsonjanusgraph/config/ContainerInstanceTypesData.java
new file mode 100644
index 0000000000..903855b74b
--- /dev/null
+++ b/catalog-model/src/main/java/org/openecomp/sdc/be/model/jsonjanusgraph/config/ContainerInstanceTypesData.java
@@ -0,0 +1,122 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 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.sdc.be.model.jsonjanusgraph.config;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.collections4.MapUtils;
+import org.openecomp.sdc.be.config.ConfigurationManager;
+import org.openecomp.sdc.be.datatypes.enums.ComponentTypeEnum;
+import org.openecomp.sdc.be.datatypes.enums.ResourceTypeEnum;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+@Component
+public class ContainerInstanceTypesData {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(ContainerInstanceTypesData.class);
+    private static final String WILDCARD = "*";
+
+    private final ConfigurationManager configurationManager;
+
+    public ContainerInstanceTypesData() {
+        this.configurationManager = ConfigurationManager.getConfigurationManager();
+    }
+
+    /**
+     * Checks if a resource instance type is allowed in a Service component.
+     *
+     * @param resourceTypeToCheck the resource instance type that will be added to the container component
+     * @return {@code true} if the resource instance is allowed, {@code false} otherwise
+     */
+    public boolean isAllowedForServiceComponent(final ResourceTypeEnum resourceTypeToCheck) {
+        final List<String> allowedResourceInstanceTypeList =
+            getComponentAllowedList(ComponentTypeEnum.SERVICE, null);
+        if (CollectionUtils.isEmpty(allowedResourceInstanceTypeList)) {
+            return false;
+        }
+        return allowedResourceInstanceTypeList.contains(resourceTypeToCheck.getValue());
+    }
+
+    /**
+     * Checks if a resource instance type is allowed for a resource component.
+     *
+     * @param containerComponentResourceType the container component type that the instance will be added
+     * @param resourceToCheck the resource instance type that will be added to the container component
+     * @return {@code true} if the resource instance is allowed in the container component, {@code false} otherwise
+     */
+    public boolean isAllowedForResourceComponent(final ResourceTypeEnum containerComponentResourceType,
+                                                 final ResourceTypeEnum resourceToCheck) {
+        final List<String> allowedResourceInstanceTypeList =
+            getComponentAllowedList(ComponentTypeEnum.RESOURCE, containerComponentResourceType);
+        if (CollectionUtils.isEmpty(allowedResourceInstanceTypeList)) {
+            return false;
+        }
+        return allowedResourceInstanceTypeList.contains(resourceToCheck.getValue());
+    }
+
+    /**
+     * Gets the list of allowed component instances for a component type.
+     *
+     * @param componentType the component type
+     * @param resourceInstanceType the instance type to check, or null for any instance
+     * @return the list of allowed component instances for the given component
+     */
+    public List<String> getComponentAllowedList(final ComponentTypeEnum componentType,
+                                                final ResourceTypeEnum resourceInstanceType) {
+        final Map<String, List<String>> componentAllowedResourceTypeMap =
+            getComponentAllowedInstanceTypes().get(componentType.getValue());
+        if (MapUtils.isEmpty(componentAllowedResourceTypeMap)) {
+            final String resourceTypeString = resourceInstanceType == null ? WILDCARD : resourceInstanceType.getValue();
+            LOGGER.warn("No '{}' instance resource type configuration found for '{}'",
+                componentType.getValue(), resourceTypeString);
+            return Collections.emptyList();
+        }
+        return getAllowedInstanceType(resourceInstanceType, componentAllowedResourceTypeMap);
+    }
+
+    private Map<String, Map<String, List<String>>> getComponentAllowedInstanceTypes() {
+        return configurationManager.getConfiguration().getComponentAllowedInstanceTypes();
+    }
+
+    private List<String> getAllowedInstanceType(final ResourceTypeEnum resourceInstanceType,
+                                                final Map<String, List<String>> instanceAllowedResourceTypeMap) {
+        if (MapUtils.isEmpty(instanceAllowedResourceTypeMap)) {
+            return Collections.emptyList();
+        }
+        List<String> allowedInstanceResourceType = null;
+        if (resourceInstanceType == null) {
+            if (instanceAllowedResourceTypeMap.containsKey(WILDCARD)) {
+                allowedInstanceResourceType = instanceAllowedResourceTypeMap.get(WILDCARD);
+            }
+        } else {
+            allowedInstanceResourceType = instanceAllowedResourceTypeMap.get(resourceInstanceType.getValue());
+        }
+
+        if (CollectionUtils.isEmpty(allowedInstanceResourceType)) {
+            return Collections.emptyList();
+        }
+
+        return allowedInstanceResourceType;
+    }
+}