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.

    channel.put(EventBuilder.withBody("test".getBytes()));
    tx.commit();
    tx.close();


    tx = channel.getTransaction();
    tx.begin();
    channel.take();
    channel.take();
    tx.commit();
    tx.close();

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    channel.take();
    tx.commit();
    tx.close();


    tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody("test".getBytes()));
    channel.put(EventBuilder.withBody("test".getBytes()));
    tx.commit();
    tx.close();
  }

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    parms.put("transactionCapacity", "3");
    context.putAll(parms);
    Configurables.configure(channel,  context);


    Transaction tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody("test".getBytes()));
    channel.put(EventBuilder.withBody("test".getBytes()));
    channel.put(EventBuilder.withBody("test".getBytes()));
    tx.rollback();
    tx.close();

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    channel.put(EventBuilder.withBody("test".getBytes()));
    tx.rollback();
    tx.close();


    tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody("test".getBytes()));
    channel.put(EventBuilder.withBody("test".getBytes()));
    channel.put(EventBuilder.withBody("test".getBytes()));
    tx.commit();
    tx.close();

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    Configurables.configure(channel,  context);


    byte[] eventBody = new byte[405];


    Transaction transaction = channel.getTransaction();
    transaction.begin();
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    transaction.commit();
    transaction.close();

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    channel.put(EventBuilder.withBody(eventBody));
    transaction.commit();
    transaction.close();


    transaction = channel.getTransaction();
    transaction.begin();
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    // this should kill  it
    transaction.commit();
    Assert.fail();

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    Configurables.configure(channel,  context);


    byte[] eventBody = new byte[405];


    Transaction tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    try {

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    tx.commit();
    tx.close();


    tx = channel.getTransaction();
    tx.begin();
    channel.take();
    channel.take();
    tx.commit();
    tx.close();

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    channel.take();
    tx.commit();
    tx.close();


    tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    try {
      channel.put(EventBuilder.withBody(eventBody));
      throw new RuntimeException("Put was able to overflow byte capacity.");

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    Configurables.configure(channel,  context);


    byte[] eventBody = new byte[405];


    Transaction tx = channel.getTransaction();
    tx.begin();
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    channel.put(EventBuilder.withBody(eventBody));
    tx.rollback();
    tx.close();

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