Esempio n. 1
0
  private static Integer createDownStreamId(ConnectedDataStream dataStream) {
    SingleOutputStreamOperator coMap =
        dataStream.map(
            new CoMapFunction<Tuple2<Long, Long>, Tuple2<Long, Long>, Object>() {
              @Override
              public Object map1(Tuple2<Long, Long> value) {
                return null;
              }

              @Override
              public Object map2(Tuple2<Long, Long> value) {
                return null;
              }
            });
    coMap.addSink(new NoOpSink());
    return coMap.getId();
  }
Esempio n. 2
0
  @Test
  public void operatorTest() {
    StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();

    DataStreamSource<Long> src = env.generateSequence(0, 0);

    MapFunction<Long, Integer> mapFunction =
        new MapFunction<Long, Integer>() {
          @Override
          public Integer map(Long value) throws Exception {
            return null;
          }
        };
    DataStream<Integer> map = src.map(mapFunction);
    map.addSink(new NoOpSink<Integer>());
    assertEquals(mapFunction, getFunctionForDataStream(map));

    FlatMapFunction<Long, Integer> flatMapFunction =
        new FlatMapFunction<Long, Integer>() {
          @Override
          public void flatMap(Long value, Collector<Integer> out) throws Exception {}
        };
    DataStream<Integer> flatMap = src.flatMap(flatMapFunction);
    flatMap.addSink(new NoOpSink<Integer>());
    assertEquals(flatMapFunction, getFunctionForDataStream(flatMap));

    FilterFunction<Integer> filterFunction =
        new FilterFunction<Integer>() {
          @Override
          public boolean filter(Integer value) throws Exception {
            return false;
          }
        };

    DataStream<Integer> unionFilter = map.union(flatMap).filter(filterFunction);

    unionFilter.addSink(new NoOpSink<Integer>());

    assertEquals(filterFunction, getFunctionForDataStream(unionFilter));

    try {
      env.getStreamGraph().getStreamEdge(map.getId(), unionFilter.getId());
    } catch (RuntimeException e) {
      fail(e.getMessage());
    }

    try {
      env.getStreamGraph().getStreamEdge(flatMap.getId(), unionFilter.getId());
    } catch (RuntimeException e) {
      fail(e.getMessage());
    }

    OutputSelector<Integer> outputSelector =
        new OutputSelector<Integer>() {
          @Override
          public Iterable<String> select(Integer value) {
            return null;
          }
        };

    SplitDataStream<Integer> split = unionFilter.split(outputSelector);
    split.select("dummy").addSink(new NoOpSink<Integer>());
    List<OutputSelector<?>> outputSelectors =
        env.getStreamGraph().getStreamNode(unionFilter.getId()).getOutputSelectors();
    assertEquals(1, outputSelectors.size());
    assertEquals(outputSelector, outputSelectors.get(0));

    DataStream<Integer> select = split.select("a");
    DataStreamSink<Integer> sink = select.print();

    StreamEdge splitEdge =
        env.getStreamGraph().getStreamEdge(unionFilter.getId(), sink.getTransformation().getId());
    assertEquals("a", splitEdge.getSelectedNames().get(0));

    ConnectedDataStream<Integer, Integer> connect = map.connect(flatMap);
    CoMapFunction<Integer, Integer, String> coMapper =
        new CoMapFunction<Integer, Integer, String>() {
          @Override
          public String map1(Integer value) {
            return null;
          }

          @Override
          public String map2(Integer value) {
            return null;
          }
        };
    DataStream<String> coMap = connect.map(coMapper);
    coMap.addSink(new NoOpSink<String>());
    assertEquals(coMapper, getFunctionForDataStream(coMap));

    try {
      env.getStreamGraph().getStreamEdge(map.getId(), coMap.getId());
    } catch (RuntimeException e) {
      fail(e.getMessage());
    }

    try {
      env.getStreamGraph().getStreamEdge(flatMap.getId(), coMap.getId());
    } catch (RuntimeException e) {
      fail(e.getMessage());
    }
  }