franz1981 commented on a change in pull request #2666: ARTEMIS-2336 Use zero
copy to replicate journal/page/large message file
URL: https://github.com/apache/activemq-artemis/pull/2666#discussion_r284573276
##########
File path:
artemis-server/src/main/java/org/apache/activemq/artemis/core/protocol/core/impl/wireformat/ReplicationSyncFileMessage.java
##########
@@ -150,30 +182,49 @@ public void encodeRest(final ActiveMQBuffer buffer) {
default:
// no-op
}
-
buffer.writeInt(dataSize);
- /*
- * sending -1 will close the file in case of a journal, but not in case
of a largeMessage
- * (which might receive appends)
- */
- if (dataSize > 0) {
- buffer.writeBytes(byteBuffer, 0, byteBuffer.writerIndex());
- }
+ }
- release();
+ @Override
+ public ActiveMQBuffer encode(CoreRemotingConnection connection) {
+ if (fileId != -1 && dataSize > 0) {
+ ActiveMQBuffer buffer;
+ int bufferSize = expectedEncodeSize();
+ int encodedSize = bufferSize;
+ boolean isNetty = false;
+ if (connection != null && connection.getTransportConnection()
instanceof NettyConnection) {
+ bufferSize -= dataSize;
+ isNetty = true;
+ }
+ buffer = createPacket(connection, bufferSize);
+ encodeHeader(buffer);
+ encodeRest(buffer, connection);
+ if (!isNetty) {
+ readFile(buffer.toByteBuffer(buffer.writerIndex(),
buffer.writableBytes()));
Review comment:
You could check if buffer contains just 1 internalNIOBuffer and use it
directly, avoiding to create a new one on each call
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