alexkazan87 commented on code in PR #7454:
URL: https://github.com/apache/camel/pull/7454#discussion_r857334490
##########
components/camel-kafka/src/main/java/org/apache/camel/component/kafka/KafkaProducer.java:
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@@ -492,4 +509,40 @@ private void doSend(Object key, ProducerRecord<Object,
Object> record, KafkaProd
kafkaProducer.send(record, cb);
}
}
+
+ private void startKafkaTransaction(Exchange exchange) {
+ exchange.getUnitOfWork().beginTransactedBy(transactionId);
+ kafkaProducer.beginTransaction();
+ exchange.getUnitOfWork().addSynchronization(new
KafkaTransactionSynchronization(transactionId, kafkaProducer));
+ }
+}
+
+class KafkaTransactionSynchronization extends SynchronizationAdapter {
+ private static final Logger LOG =
LoggerFactory.getLogger(KafkaTransactionSynchronization.class);
+ private String transactionId;
+ private Producer kafkaProducer;
+
+ public KafkaTransactionSynchronization(String transacionId, Producer
kafkaProducer) {
+ this.transactionId = transacionId;
+ this.kafkaProducer = kafkaProducer;
+ }
+
+ @Override
+ public void onDone(Exchange exchange) {
+ try {
+ if (exchange.getException() != null || exchange.isRollbackOnly()) {
Review Comment:
What kind of exceptions could it catch there? I mean, if
beginTransactions() causes something unexpected for example if producer closed,
so the synchronization block can handle?
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