/*
* Copyright (C) 2015 SoftIndex LLC.
*
* 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.
*/
package io.datakernel.stream.processor;
import io.datakernel.eventloop.Eventloop;
import io.datakernel.stream.StreamConsumer;
import io.datakernel.stream.StreamProducer;
import io.datakernel.stream.StreamProducers;
import io.datakernel.stream.TestStreamConsumers;
import org.junit.Test;
import java.util.ArrayList;
import java.util.List;
import static io.datakernel.eventloop.FatalErrorHandlers.rethrowOnAnyError;
import static io.datakernel.stream.StreamStatus.CLOSED_WITH_ERROR;
import static io.datakernel.stream.StreamStatus.END_OF_STREAM;
import static io.datakernel.stream.processor.Utils.assertProducerStatuses;
import static java.util.Arrays.asList;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class StreamSplitterTest {
@Test
public void test1() throws Exception {
Eventloop eventloop = Eventloop.create().withFatalErrorHandler(rethrowOnAnyError());
StreamProducer<Integer> source = StreamProducers.ofIterable(eventloop, asList(1, 2, 3));
StreamSplitter<Integer> streamConcat = StreamSplitter.create(eventloop);
TestStreamConsumers.TestConsumerToList<Integer> consumerToList1 = TestStreamConsumers.toListRandomlySuspending(eventloop);
TestStreamConsumers.TestConsumerToList<Integer> consumerToList2 = TestStreamConsumers.toListRandomlySuspending(eventloop);
source.streamTo(streamConcat.getInput());
streamConcat.newOutput().streamTo(consumerToList1);
streamConcat.newOutput().streamTo(consumerToList2);
eventloop.run();
assertEquals(asList(1, 2, 3), consumerToList1.getList());
assertEquals(asList(1, 2, 3), consumerToList2.getList());
assertEquals(END_OF_STREAM, source.getProducerStatus());
assertEquals(END_OF_STREAM, streamConcat.getInput().getConsumerStatus());
assertProducerStatuses(END_OF_STREAM, streamConcat.getOutputs());
}
@Test
public void testConsumerDisconnectWithError() {
Eventloop eventloop = Eventloop.create().withFatalErrorHandler(rethrowOnAnyError());
StreamProducer<Integer> source = StreamProducers.ofIterable(eventloop, asList(1, 2, 3, 4, 5));
StreamSplitter<Integer> streamConcat = StreamSplitter.create(eventloop);
List<Integer> toList1 = new ArrayList<>();
TestStreamConsumers.TestConsumerToList<Integer> consumerToList1 = TestStreamConsumers.toListOneByOne(eventloop, toList1);
List<Integer> toList2 = new ArrayList<>();
TestStreamConsumers.TestConsumerToList<Integer> consumerToList2 = TestStreamConsumers.toListOneByOne(eventloop, toList2);
List<Integer> toBadList = new ArrayList<>();
TestStreamConsumers.TestConsumerToList<Integer> badConsumer = new TestStreamConsumers.TestConsumerToList<Integer>(eventloop, toBadList) {
@Override
public void onData(Integer item) {
list.add(item);
if (item == 3) {
closeWithError(new Exception("Test Exception"));
return;
}
suspend();
eventloop.post(new Runnable() {
@Override
public void run() {
resume();
}
});
}
};
source.streamTo(streamConcat.getInput());
streamConcat.newOutput().streamTo(consumerToList1);
streamConcat.newOutput().streamTo(badConsumer);
streamConcat.newOutput().streamTo(consumerToList2);
eventloop.run();
assertTrue(toList1.size() == 3);
assertTrue(toList2.size() == 3);
assertTrue(toBadList.size() == 3);
assertEquals(CLOSED_WITH_ERROR, source.getProducerStatus());
assertEquals(CLOSED_WITH_ERROR, streamConcat.getInput().getConsumerStatus());
assertProducerStatuses(CLOSED_WITH_ERROR, streamConcat.getOutputs());
}
@Test
public void testProducerDisconnectWithError() {
Eventloop eventloop = Eventloop.create().withFatalErrorHandler(rethrowOnAnyError());
StreamProducer<Integer> source = StreamProducers.concat(eventloop,
StreamProducers.ofValue(eventloop, 1),
StreamProducers.ofValue(eventloop, 2),
StreamProducers.ofValue(eventloop, 3),
StreamProducers.<Integer>closingWithError(eventloop, new Exception("Test Exception"))
);
StreamSplitter<Integer> streamConcat = StreamSplitter.create(eventloop);
List<Integer> list1 = new ArrayList<>();
StreamConsumer<Integer> consumer1 = TestStreamConsumers.toListOneByOne(eventloop, list1);
List<Integer> list2 = new ArrayList<>();
StreamConsumer<Integer> consumer2 = TestStreamConsumers.toListOneByOne(eventloop, list2);
List<Integer> list3 = new ArrayList<>();
StreamConsumer<Integer> consumer3 = TestStreamConsumers.toListOneByOne(eventloop, list3);
source.streamTo(streamConcat.getInput());
streamConcat.newOutput().streamTo(consumer1);
streamConcat.newOutput().streamTo(consumer2);
streamConcat.newOutput().streamTo(consumer3);
eventloop.run();
assertTrue(list1.size() == 3);
assertTrue(list2.size() == 3);
assertTrue(list3.size() == 3);
assertEquals(CLOSED_WITH_ERROR, streamConcat.getInput().getConsumerStatus());
assertProducerStatuses(CLOSED_WITH_ERROR, streamConcat.getOutputs());
}
}