Examples with MessageCollector org.apache.samza.task.MessageCollector used on opensource projects

Example 26 with MessageCollector

use of org.apache.samza.task.MessageCollector in project samza by apache.

the class TestMessageStreamImpl method testSink.

@Test
public void testSink() {
    MessageStreamImpl<TestMessageEnvelope> inputStream = new MessageStreamImpl<>(mockGraph);
    SystemStream testStream = new SystemStream("test-sys", "test-stream");
    SinkFunction<TestMessageEnvelope> xSink = (TestMessageEnvelope m, MessageCollector mc, TaskCoordinator tc) -> {
        mc.send(new OutgoingMessageEnvelope(testStream, m.getMessage()));
        tc.commit(TaskCoordinator.RequestScope.CURRENT_TASK);
    };
    inputStream.sink(xSink);
    Collection<OperatorSpec> subs = inputStream.getRegisteredOperatorSpecs();
    assertEquals(subs.size(), 1);
    OperatorSpec<TestMessageEnvelope> sinkOp = subs.iterator().next();
    assertTrue(sinkOp instanceof SinkOperatorSpec);
    assertEquals(((SinkOperatorSpec) sinkOp).getSinkFn(), xSink);
    TestMessageEnvelope mockTest1 = mock(TestMessageEnvelope.class);
    MessageType mockMsgBody = mock(MessageType.class);
    when(mockTest1.getMessage()).thenReturn(mockMsgBody);
    final List<OutgoingMessageEnvelope> outMsgs = new ArrayList<>();
    MessageCollector mockCollector = mock(MessageCollector.class);
    doAnswer(invocation -> {
        outMsgs.add((OutgoingMessageEnvelope) invocation.getArguments()[0]);
        return null;
    }).when(mockCollector).send(any());
    TaskCoordinator mockCoordinator = mock(TaskCoordinator.class);
    ((SinkOperatorSpec) sinkOp).getSinkFn().apply(mockTest1, mockCollector, mockCoordinator);
    assertEquals(1, outMsgs.size());
    assertEquals(testStream, outMsgs.get(0).getSystemStream());
    assertEquals(mockMsgBody, outMsgs.get(0).getMessage());
}

Example 27 with MessageCollector

use of org.apache.samza.task.MessageCollector in project samza by apache.

the class TestJoinOperator method joinNoMatch.

@Test
public void joinNoMatch() throws Exception {
    StreamOperatorTask sot = createStreamOperatorTask(new SystemClock(), new TestJoinStreamApplication(new TestJoinFunction()));
    List<Integer> output = new ArrayList<>();
    MessageCollector messageCollector = envelope -> output.add((Integer) envelope.getMessage());
    // push messages to first stream
    numbers.forEach(n -> sot.process(new FirstStreamIME(n, n), messageCollector, taskCoordinator));
    // push messages to second stream with different keys
    numbers.forEach(n -> sot.process(new SecondStreamIME(n + 100, n), messageCollector, taskCoordinator));
    assertTrue(output.isEmpty());
}

Example 28 with MessageCollector

use of org.apache.samza.task.MessageCollector in project samza by apache.

the class TestJoinOperator method join.

@Test
public void join() throws Exception {
    StreamOperatorTask sot = createStreamOperatorTask(new SystemClock(), new TestJoinStreamApplication(new TestJoinFunction()));
    List<Integer> output = new ArrayList<>();
    MessageCollector messageCollector = envelope -> output.add((Integer) envelope.getMessage());
    // push messages to first stream
    numbers.forEach(n -> sot.process(new FirstStreamIME(n, n), messageCollector, taskCoordinator));
    // push messages to second stream with same keys
    numbers.forEach(n -> sot.process(new SecondStreamIME(n, n), messageCollector, taskCoordinator));
    int outputSum = output.stream().reduce(0, (s, m) -> s + m);
    assertEquals(110, outputSum);
}