Examples with DAG com.hazelcast.jet.core.DAG used on opensource projects

Example 66 with DAG

use of com.hazelcast.jet.core.DAG in project hazelcast by hazelcast.

the class StreamFilesP_integrationTest method buildDag.

private DAG buildDag() {
    DAG dag = new DAG();
    Vertex reader = dag.newVertex("reader", streamFilesP(directory.getPath(), UTF_8, "*", false, Util::entry)).localParallelism(1);
    Vertex writer = dag.newVertex("writer", writeListP(list.getName())).localParallelism(1);
    dag.edge(between(reader, writer));
    return dag;
}

Example 67 with DAG

use of com.hazelcast.jet.core.DAG in project hazelcast by hazelcast.

the class StreamFilesP_integrationTest method when_appendingToPreexistingIncompleteLine_then_pickupCompleteLines.

@Test
public void when_appendingToPreexistingIncompleteLine_then_pickupCompleteLines() throws Exception {
    DAG dag = buildDag();
    // this is a pre-existing file, should not be picked up
    File file = createNewFile();
    try (PrintWriter writer = new PrintWriter(new FileOutputStream(file, true))) {
        // note: no newline appended
        writer.write("hello");
    }
    sleepAtLeastMillis(50);
    Future<Void> jobFuture = instance.getJet().newJob(dag).getFuture();
    // wait for the processor to initialize
    sleepAtLeastSeconds(2);
    // pre-existing file should not be picked up
    assertEquals(0, list.size());
    // this completes the first line and a second one - only the second one should be picked
    appendToFile(file, "world", "second line");
    // now, all three lines are picked up
    assertTrueEventually(() -> assertEquals(1, list.size()));
    assertEquals(entry(file.getName(), "second line"), list.get(0));
    finishDirectory(jobFuture, file);
}

Example 68 with DAG

use of com.hazelcast.jet.core.DAG in project hazelcast by hazelcast.

the class StreamFilesP_integrationTest method when_newAndModified_then_pickupAddition.

@Test
@Ignore
public void when_newAndModified_then_pickupAddition() throws Exception {
    DAG dag = buildDag();
    Future<Void> jobFuture = instance.getJet().newJob(dag).getFuture();
    // wait for the processor to initialize
    sleepAtLeastSeconds(2);
    assertEquals(0, list.size());
    File file = new File(directory, randomName());
    appendToFile(file, "hello", "world");
    assertTrueEventually(() -> assertEquals(2, list.size()));
    // now add one more line, only this line should be picked up
    appendToFile(file, "third line");
    assertTrueEventually(() -> assertEquals(3, list.size()));
    finishDirectory(jobFuture, file);
}

Example 69 with DAG

use of com.hazelcast.jet.core.DAG in project hazelcast by hazelcast.

the class StreamSocketP_integrationTest method when_dataWrittenToSocket_then_dataImmediatelyEmitted.

@Test
public void when_dataWrittenToSocket_then_dataImmediatelyEmitted() throws Exception {
    CountDownLatch latch = new CountDownLatch(1);
    // Given
    try (ServerSocket socket = new ServerSocket(PORT)) {
        spawn(() -> uncheckRun(() -> {
            Socket accept1 = socket.accept();
            Socket accept2 = socket.accept();
            PrintWriter writer1 = new PrintWriter(accept1.getOutputStream());
            writer1.write("hello1 \n");
            writer1.flush();
            PrintWriter writer2 = new PrintWriter(accept2.getOutputStream());
            writer2.write("hello2 \n");
            writer2.flush();
            assertOpenEventually(latch);
            writer1.write("world1 \n");
            writer1.write("jet1 \n");
            writer1.flush();
            writer2.write("world2 \n");
            writer2.write("jet2 \n");
            writer2.flush();
            accept1.close();
            accept2.close();
        }));
        DAG dag = new DAG();
        Vertex producer = dag.newVertex("producer", streamSocketP(HOST, PORT, UTF_8)).localParallelism(2);
        Vertex consumer = dag.newVertex("consumer", writeListP("consumer")).localParallelism(1);
        dag.edge(between(producer, consumer));
        // When
        Job job = instance.getJet().newJob(dag);
        IList<Object> list = instance.getList("consumer");
        assertTrueEventually(() -> assertEquals(2, list.size()));
        latch.countDown();
        job.join();
        assertEquals(6, list.size());
    }
}

Example 70 with DAG

use of com.hazelcast.jet.core.DAG in project hazelcast by hazelcast.

the class StreamSocketP_integrationTest method when_jobCancelled_then_readerClosed.

@Test
public void when_jobCancelled_then_readerClosed() throws Exception {
    try (ServerSocket socket = new ServerSocket(PORT)) {
        AtomicReference<Socket> accept = new AtomicReference<>();
        CountDownLatch acceptationLatch = new CountDownLatch(1);
        // Cancellation only works, if there are data on socket. Without data, SocketInputStream.read()
        // blocks indefinitely. The StreamSocketP should be improved to use NIO.
        spawn(() -> uncheckRun(() -> {
            accept.set(socket.accept());
            acceptationLatch.countDown();
            byte[] word = "jet\n".getBytes();
            try (OutputStream outputStream = accept.get().getOutputStream()) {
                while (true) {
                    outputStream.write(word);
                    outputStream.flush();
                    Thread.sleep(1000);
                }
            }
        }));
        Vertex producer = new Vertex("producer", streamSocketP(HOST, PORT, UTF_8)).localParallelism(1);
        Vertex sink = new Vertex("sink", noopP()).localParallelism(1);
        DAG dag = new DAG().vertex(producer).vertex(sink).edge(between(producer, sink));
        Job job = instance.getJet().newJob(dag);
        acceptationLatch.await();
        job.cancel();
        assertTrueEventually(() -> assertTrue("Socket not closed", accept.get().isClosed()));
    }
}