| /* |
| * 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.flink.tests.util.kafka; |
| |
| import java.util.Optional; |
| |
| /** A factory for {@link KafkaResource} implementations. */ |
| @FunctionalInterface |
| public interface KafkaResourceFactory { |
| |
| /** |
| * Returns a {@link KafkaResource} instance. If the instance could not be instantiated (for |
| * example, because a mandatory parameter was missing), then an empty {@link Optional} should be |
| * returned. |
| * |
| * @return KafkaResource instance |
| * @throws Exception if the instance could not be instantiated |
| */ |
| KafkaResource create(String kafkaVersion) throws Exception; |
| } |