| /* |
| * 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.training.exercises.testing; |
| |
| import org.apache.flink.api.common.JobExecutionResult; |
| import org.apache.flink.streaming.api.functions.source.SourceFunction; |
| import org.apache.flink.training.exercises.common.utils.MissingSolutionException; |
| |
| /** |
| * This allows the tests to be run against both the exercises and the solutions. |
| * |
| * <p>If an exercise throws MissingSolutionException, then the solution is tested. |
| */ |
| public class ComposedTwoInputPipeline<IN1, IN2, OUT> |
| implements ExecutableTwoInputPipeline<IN1, IN2, OUT> { |
| |
| private final ExecutableTwoInputPipeline<IN1, IN2, OUT> exercise; |
| private final ExecutableTwoInputPipeline<IN1, IN2, OUT> solution; |
| |
| public ComposedTwoInputPipeline( |
| ExecutableTwoInputPipeline<IN1, IN2, OUT> exercise, |
| ExecutableTwoInputPipeline<IN1, IN2, OUT> solution) { |
| |
| this.exercise = exercise; |
| this.solution = solution; |
| } |
| |
| @Override |
| public JobExecutionResult execute( |
| SourceFunction<IN1> source1, SourceFunction<IN2> source2, TestSink<OUT> sink) |
| throws Exception { |
| |
| JobExecutionResult result; |
| |
| try { |
| result = exercise.execute(source1, source2, sink); |
| } catch (Exception e) { |
| if (MissingSolutionException.ultimateCauseIsMissingSolution(e)) { |
| result = solution.execute(source1, source2, sink); |
| } else { |
| throw e; |
| } |
| } |
| |
| return result; |
| } |
| } |