Examples of org.apache.flume.Transaction.begin()

org.apache.flume.Transaction.begin()

Starts a transaction boundary for the current channel operation. If a transaction is already in progress, this method will join that transaction using reference counting.

Note: For every invocation of this method there must be a corresponding invocation of {@linkplain #close()} method. Failureto ensure this can lead to dangling transactions and unpredictable results.

      }
      for(WALEntry<RecoverableMemoryChannelEvent> entry : results.getResults()) {
        Transaction transaction = null;
        try {
          transaction = memoryChannel.getTransaction();
          transaction.begin();
          memoryChannel.put(entry.getData());
          transaction.commit();
        } catch(Exception e) {
          if(transaction != null) {
            try {

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    source.setChannelProcessor(new ChannelProcessor(rcs));


    source.start();
    Transaction transaction = channel.getTransaction();


    transaction.begin();
    Event event;


    FileOutputStream outputStream = new FileOutputStream(
        "/tmp/flume-execsource." + Thread.currentThread().getId());

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    Channel channel = new MemoryChannel();
    Configurables.configure(channel, new Context());
    sink.setChannel(channel);
    sink.start();
    Transaction tx = channel.getTransaction();
    tx.begin();
    Event e = EventBuilder.withBody(
        Bytes.toBytes(valBase));
    channel.put(e);
    tx.commit();
    tx.close();

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    HttpResponse response = httpClient.execute(postRequest);


    Assert.assertEquals(HttpServletResponse.SC_OK,
            response.getStatusLine().getStatusCode());
    Transaction tx = channel.getTransaction();
    tx.begin();
    Event e = channel.take();
    Assert.assertNotNull(e);
    Assert.assertEquals("b", e.getHeaders().get("a"));
    Assert.assertEquals("random_body", new String(e.getBody(), "UTF-8"));

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    HttpResponse response = httpClient.execute(postRequest);


    Assert.assertEquals(HttpServletResponse.SC_OK,
            response.getStatusLine().getStatusCode());
    Transaction tx = channel.getTransaction();
    tx.begin();
    Event e = channel.take();
    Assert.assertNotNull(e);
    Assert.assertEquals("b", e.getHeaders().get("a"));
    Assert.assertEquals("random_body", new String(e.getBody(), "UTF-16"));

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    input.setContentType("application/json");
    postRequest.setEntity(input);


    httpClient.execute(postRequest);
    Transaction tx = channel.getTransaction();
    tx.begin();
    Event e = channel.take();
    Assert.assertNotNull(e);
    Assert.assertEquals("b", e.getHeaders().get("a"));
    Assert.assertEquals("random_body", new String(e.getBody(),"UTF-8"));
    tx.commit();

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  }


  private void takeWithEncoding(String encoding, int n, List<JSONEvent> events)
          throws Exception{
    Transaction tx = channel.getTransaction();
    tx.begin();
    Event e = null;
    int i = 0;
    while (true) {
      e = channel.take();
      if (e == null) {

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  public void shouldIndexOneEvent() throws Exception {
    Configurables.configure(fixture, new Context(parameters));
    Channel channel = bindAndStartChannel(fixture);


    Transaction tx = channel.getTransaction();
    tx.begin();
    Event event = EventBuilder.withBody("event #1 or 1".getBytes());
    channel.put(event);
    tx.commit();
    tx.close();

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    int numberOfEvents = 5;
    Event[] events = new Event[numberOfEvents];


    Transaction tx = channel.getTransaction();
    tx.begin();
    for (int i = 0; i < numberOfEvents; i++) {
      String body = "event #" + i + " of " + numberOfEvents;
      Event event = EventBuilder.withBody(body.getBytes());
      events[i] = event;
      channel.put(event);

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    int numberOfEvents = 5;
    Event[] events = new Event[numberOfEvents];


    Transaction tx = channel.getTransaction();
    tx.begin();
    for (int i = 0; i < numberOfEvents; i++) {
      String body = "event #" + i + " of " + numberOfEvents;
      Event event = EventBuilder.withBody(body.getBytes());
      events[i] = event;
      channel.put(event);

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