| /* |
| * 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.typeinfo.TypeInformation; |
| import org.apache.flink.api.java.typeutils.ResultTypeQueryable; |
| import org.apache.flink.streaming.api.functions.sink.SinkFunction; |
| import org.apache.flink.training.exercises.common.datatypes.TaxiFare; |
| import org.apache.flink.training.exercises.common.datatypes.TaxiRide; |
| import org.apache.flink.training.exercises.common.utils.ExerciseBase; |
| import org.apache.flink.training.exercises.common.utils.MissingSolutionException; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public abstract class TaxiRideTestBase<OUT> { |
| public static class TestRideSource extends TestSource<TaxiRide> implements ResultTypeQueryable<TaxiRide> { |
| public TestRideSource(Object ... eventsOrWatermarks) { |
| this.testStream = eventsOrWatermarks; |
| } |
| |
| @Override |
| long getTimestamp(TaxiRide ride) { |
| return ride.getEventTime(); |
| } |
| |
| @Override |
| public TypeInformation<TaxiRide> getProducedType() { |
| return TypeInformation.of(TaxiRide.class); |
| } |
| } |
| |
| public static class TestFareSource extends TestSource<TaxiFare> implements ResultTypeQueryable<TaxiFare> { |
| public TestFareSource(Object ... eventsOrWatermarks) { |
| this.testStream = eventsOrWatermarks; |
| } |
| |
| @Override |
| long getTimestamp(TaxiFare fare) { |
| return fare.getEventTime(); |
| } |
| |
| @Override |
| public TypeInformation<TaxiFare> getProducedType() { |
| return TypeInformation.of(TaxiFare.class); |
| } |
| } |
| |
| public static class TestStringSource extends TestSource<String> implements ResultTypeQueryable<String> { |
| public TestStringSource(Object ... eventsOrWatermarks) { |
| this.testStream = eventsOrWatermarks; |
| } |
| |
| @Override |
| long getTimestamp(String s) { |
| return 0L; |
| } |
| |
| @Override |
| public TypeInformation<String> getProducedType() { |
| return TypeInformation.of(String.class); |
| } |
| } |
| |
| public static class TestSink<OUT> implements SinkFunction<OUT> { |
| |
| // must be static |
| public static final List VALUES = new ArrayList<>(); |
| |
| @Override |
| public void invoke(OUT value, Context context) { |
| VALUES.add(value); |
| } |
| } |
| |
| public interface Testable { |
| void main() throws Exception; |
| } |
| |
| protected List<OUT> runApp(TestRideSource source, TestSink<OUT> sink, Testable exercise, Testable solution) throws Exception { |
| ExerciseBase.rides = source; |
| |
| return execute(sink, exercise, solution); |
| } |
| |
| protected List<OUT> runApp(TestFareSource source, TestSink<OUT> sink, Testable exercise, Testable solution) throws Exception { |
| ExerciseBase.fares = source; |
| |
| return execute(sink, exercise, solution); |
| } |
| |
| protected List<OUT> runApp(TestRideSource rides, TestFareSource fares, TestSink<OUT> sink, Testable exercise, Testable solution) throws Exception { |
| ExerciseBase.rides = rides; |
| ExerciseBase.fares = fares; |
| |
| return execute(sink, exercise, solution); |
| } |
| |
| protected List<OUT> runApp(TestRideSource rides, TestSink<OUT> sink, Testable solution) throws Exception { |
| ExerciseBase.rides = rides; |
| |
| return execute(sink, solution); |
| } |
| |
| protected List<OUT> runApp(TestRideSource rides, TestStringSource strings, TestSink<OUT> sink, Testable exercise, Testable solution) throws Exception { |
| ExerciseBase.rides = rides; |
| ExerciseBase.strings = strings; |
| |
| return execute(sink, exercise, solution); |
| } |
| |
| private List<OUT> execute(TestSink<OUT> sink, Testable exercise, Testable solution) throws Exception { |
| sink.VALUES.clear(); |
| |
| ExerciseBase.out = sink; |
| ExerciseBase.parallelism = 1; |
| |
| try { |
| exercise.main(); |
| } catch (Exception e) { |
| if (ultimateCauseIsMissingSolution(e)) { |
| sink.VALUES.clear(); |
| solution.main(); |
| } else { |
| throw e; |
| } |
| } |
| |
| return sink.VALUES; |
| } |
| |
| private List<OUT> execute(TestSink<OUT> sink, Testable solution) throws Exception { |
| sink.VALUES.clear(); |
| |
| ExerciseBase.out = sink; |
| ExerciseBase.parallelism = 1; |
| |
| solution.main(); |
| |
| return sink.VALUES; |
| } |
| |
| private boolean ultimateCauseIsMissingSolution(Throwable e) { |
| if (e instanceof MissingSolutionException) { |
| return true; |
| } else if (e.getCause() != null) { |
| return ultimateCauseIsMissingSolution(e.getCause()); |
| } else { |
| return false; |
| } |
| } |
| } |