jeffgrunewald commented on a change in pull request #6680: [Issue
5979][pulsar-websocket] Add cumulative acknowledgement to websocket consumer
URL: https://github.com/apache/pulsar/pull/6680#discussion_r406774303
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File path:
pulsar-websocket/src/main/java/org/apache/pulsar/websocket/ConsumerHandler.java
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@@ -240,12 +242,27 @@ public void onWebSocketText(String message) {
// We should have received an ack
MessageId msgId =
MessageId.fromByteArrayWithTopic(Base64.getDecoder().decode(command.messageId),
topic.toString());
- consumer.acknowledgeAsync(msgId).thenAccept(consumer ->
numMsgsAcked.increment());
- if (!this.pullMode) {
- int pending = pendingMessages.getAndDecrement();
- if (pending >= maxPendingMessages) {
- // Resume delivery
- receiveMessage();
+ if ("cumulative".equals(command.ackType)) {
+ ConsumerStats cStats = consumer.getStats();
+ long ackDiff = cStats.getTotalMsgsReceived() -
cStats.getTotalAcksSent();
+
consumer.acknowledgeCumulativeAsync(msgId).thenAccept(consumer ->
numMsgsAcked.add(ackDiff));
+ if (!this.pullMode) {
+ int acked = (int) ackDiff;
+ IntBinaryOperator decrementFunction = (x, y) -> x - y;
+ int pending = pendingMessages.accumulateAndGet(acked,
decrementFunction);
Review comment:
That's reasonable and easy to correct; thanks for the insight!
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