use of org.apache.pulsar.common.api.proto.PulsarApi.MessageMetadata.Builder in project incubator-pulsar by apache.
the class MessageIdTest method testCorruptMessageRemove.
/**
* Verifies: if message is corrupted before sending to broker and if broker gives checksum error: then 1.
* Client-Producer recomputes checksum with modified data 2. Retry message-send again 3. Broker verifies checksum 4.
* client receives send-ack success
*
* @throws Exception
*/
@Test
public void testCorruptMessageRemove() throws Exception {
final String topicName = "persistent://prop/use/ns-abc/retry-topic";
// 1. producer connect
ProducerImpl<byte[]> prod = (ProducerImpl<byte[]>) pulsarClient.newProducer().topic(topicName).sendTimeout(10, TimeUnit.MINUTES).create();
ProducerImpl<byte[]> producer = spy(prod);
Field producerIdField = ProducerImpl.class.getDeclaredField("producerId");
producerIdField.setAccessible(true);
long producerId = (long) producerIdField.get(producer);
// registered spy ProducerImpl
producer.cnx().registerProducer(producerId, producer);
Consumer<byte[]> consumer = pulsarClient.newConsumer().topic(topicName).subscriptionName("my-sub").subscribe();
// 2. Stop the broker, and publishes messages. Messages are accumulated in the producer queue and they're
// checksums
// would have already been computed. If we change the message content at that point, it should result in a
// checksum validation error
// enable checksum at producer
stopBroker();
Message<byte[]> msg = MessageBuilder.create().setContent("message-1".getBytes()).build();
CompletableFuture<MessageId> future = producer.sendAsync(msg);
// 3. corrupt the message
// new content would be 'message-3'
msg.getData()[msg.getData().length - 1] = '2';
// 4. Restart the broker to have the messages published
startBroker();
try {
future.get();
fail("send message should have failed with checksum excetion");
} catch (Exception e) {
if (e.getCause() instanceof PulsarClientException.ChecksumException) {
// ok (callback should get checksum exception as message was modified and corrupt)
} else {
fail("Callback should have only failed with ChecksumException", e);
}
}
// 5. Verify
/**
* verify: ProducerImpl.verifyLocalBufferIsNotCorrupted() => validates if message is corrupt
*/
MessageImpl<byte[]> msg2 = (MessageImpl<byte[]>) MessageBuilder.create().setContent("message-1".getBytes()).build();
ByteBuf payload = msg2.getDataBuffer();
Builder metadataBuilder = ((MessageImpl<byte[]>) msg).getMessageBuilder();
MessageMetadata msgMetadata = metadataBuilder.setProducerName("test").setSequenceId(1).setPublishTime(10L).build();
ByteBufPair cmd = Commands.newSend(producerId, 1, 1, ChecksumType.Crc32c, msgMetadata, payload);
// (a) create OpSendMsg with message-data : "message-1"
OpSendMsg op = OpSendMsg.create(((MessageImpl<byte[]>) msg), cmd, 1, null);
// a.verify: as message is not corrupt: no need to update checksum
assertTrue(producer.verifyLocalBufferIsNotCorrupted(op));
// (b) corrupt message
// new content would be 'message-2'
msg2.getData()[msg2.getData().length - 1] = '2';
// b. verify: as message is corrupt: update checksum
assertFalse(producer.verifyLocalBufferIsNotCorrupted(op));
assertEquals(producer.getPendingQueueSize(), 0);
// [2] test-recoverChecksumError functionality
stopBroker();
MessageImpl<byte[]> msg1 = (MessageImpl<byte[]>) MessageBuilder.create().setContent("message-1".getBytes()).build();
future = producer.sendAsync(msg1);
ClientCnx cnx = spy(new ClientCnx(new ClientConfigurationData(), ((PulsarClientImpl) pulsarClient).eventLoopGroup()));
String exc = "broker is already stopped";
// when client-try to recover checksum by resending to broker: throw exception as broker is stopped
doThrow(new IllegalStateException(exc)).when(cnx).ctx();
try {
producer.recoverChecksumError(cnx, 1);
fail("it should call : resendMessages() => which should throw above mocked exception");
} catch (IllegalStateException e) {
assertEquals(exc, e.getMessage());
}
producer.close();
consumer.close();
// clean reference of mocked producer
producer = null;
}
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