ijuma commented on a change in pull request #7409:
URL: https://github.com/apache/kafka/pull/7409#discussion_r536208309
##########
File path:
clients/src/main/java/org/apache/kafka/common/requests/RequestUtils.java
##########
@@ -90,4 +75,37 @@ public static boolean hasTransactionalRecords(ProduceRequest
request) {
}
return new AbstractMap.SimpleEntry<>(hasIdempotentRecords,
hasTransactionalRecords);
}
+
+ public static MessageSizeAccumulator size(
+ ObjectSerializationCache serializationCache,
+ Message header,
+ short headerVersion,
+ Message apiMessage,
+ short apiVersion
+ ) {
+ MessageSizeAccumulator messageSize = new MessageSizeAccumulator();
+ if (header != null)
+ header.addSize(messageSize, serializationCache, headerVersion);
+ apiMessage.addSize(messageSize, serializationCache, apiVersion);
+ return messageSize;
+ }
+
+ public static ByteBuffer serialize(
+ Message header,
+ short headerVersion,
+ Message apiMessage,
+ short apiVersion
+ ) {
+ ObjectSerializationCache serializationCache = new
ObjectSerializationCache();
+ MessageSizeAccumulator messageSize =
RequestUtils.size(serializationCache, header, headerVersion, apiMessage,
apiVersion);
+
+ ByteBuffer buffer = ByteBuffer.allocate(messageSize.totalSize());
Review comment:
Actually, I need to think about this more. Because `SendBuilder` is not
being used, we actually need to copy all the bytes to the returned buffer. I
need to check what happens for a message contains records.
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