| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| package org.apache.nifi.registry.flow.mapping; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.util.Optional; |
| import java.util.UUID; |
| |
| public interface ComponentIdLookup { |
| |
| /** |
| * Given a component identifier and an optional Versioned Component ID, returns the identifier to use for the component |
| * @param currentVersionedId the current Versioned Component ID, or an empty optional if the component does not currently have a Versioned Component ID |
| * @param componentId the ID of the component |
| * @return the ID to use for mapping a component to a Versioned Component |
| */ |
| String getComponentId(Optional<String> currentVersionedId, String componentId); |
| |
| |
| /** |
| * Uses the Versioned Component ID, if it is present, or else generates a new Versioned Component ID based on the Component ID |
| */ |
| ComponentIdLookup VERSIONED_OR_GENERATE = new ComponentIdLookup() { |
| @Override |
| public String getComponentId(final Optional<String> currentVersionedId, final String componentId) { |
| if (currentVersionedId.isPresent()) { |
| return currentVersionedId.get(); |
| } |
| |
| return UUID.nameUUIDFromBytes(componentId.getBytes(StandardCharsets.UTF_8)).toString(); |
| } |
| }; |
| |
| |
| |
| /** |
| * Always uses the Component ID |
| */ |
| ComponentIdLookup USE_COMPONENT_ID = (versioned, componentId) -> componentId; |
| } |
