rreddy-22 commented on code in PR #19714:
URL: https://github.com/apache/kafka/pull/19714#discussion_r2096140934
##########
clients/src/main/java/org/apache/kafka/clients/producer/KafkaProducer.java:
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@@ -884,6 +884,50 @@ public void abortTransaction() throws
ProducerFencedException {
producerMetrics.recordAbortTxn(time.nanoseconds() - abortStart);
}
+ /**
+ * Completes a prepared transaction by comparing the provided prepared
transaction state with the
+ * current prepared state on the producer.
+ * If they match, the transaction is committed; otherwise, it is aborted.
+ *
+ * @param preparedTxnState The prepared transaction state to
compare against the current state
+ * @throws IllegalStateException if the producer is not in prepared
transaction state
+ * @throws InvalidTxnStateException if the producer is not in prepared
state
+ * @throws ProducerFencedException fatal error indicating another producer
with the same transactional.id is active
+ * @throws KafkaException if the producer has encountered a previous fatal
error or for any other unexpected error
+ * @throws TimeoutException if the time taken for completing the
transaction has surpassed <code>max.block.ms</code>
+ * @throws InterruptException if the thread is interrupted while blocked
+ */
+ @Override
+ public void completeTransaction(PreparedTxnState preparedTxnState) throws
ProducerFencedException {
+ throwIfNoTransactionManager();
+ throwIfProducerClosed();
+
+ if (!transactionManager.isPrepared()) {
+ throw new InvalidTxnStateException("Cannot complete transaction
because no transaction has been prepared. " +
+ "Call prepareTransaction() first, or make sure
initTransaction(true) was called.");
+ }
+
+ // Get the current prepared transaction state
+ PreparedTxnState currentPreparedState =
transactionManager.preparedTransactionState();
+
+ long completeStart = time.nanoseconds();
+
+ // Compare the prepared transaction state token and commit or abort
accordingly
+ if (currentPreparedState.equals(preparedTxnState)) {
+ log.info("Committing prepared transaction as the prepared state
token matches");
Review Comment:
Hmm yeah that's true, maybe I can make it a debug level log
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