codelipenghui commented on a change in pull request #9102:
URL: https://github.com/apache/pulsar/pull/9102#discussion_r550479879
##########
File path:
pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerImpl.java
##########
@@ -1843,18 +1812,29 @@ private boolean processPossibleToDLQ(MessageIdImpl
messageId) {
}
}
if (deadLetterProducer != null) {
- try {
- for (MessageImpl<T> message : deadLetterMessages) {
- deadLetterProducer.newMessage()
- .value(message.getValue())
- .properties(message.getProperties())
- .send();
- }
- acknowledge(messageId);
- return true;
- } catch (Exception e) {
- log.error("Send to dead letter topic exception with topic:
{}, messageId: {}", deadLetterProducer.getTopic(), messageId, e);
+ for (MessageImpl<T> message : deadLetterMessages) {
+ deadLetterProducer.newMessage()
+ .value(message.getValue())
+ .properties(message.getProperties())
+ .sendAsync()
+ .whenComplete((msgId, ex) -> {
+ if (ex != null) {
+ log.error("Send to dead letter topic
exception with topic: {}, messageId: {}",
+ deadLetterProducer.getTopic(),
messageId, ex);
+ return;
+ }
+
+ log.debug("Redeliver dead letter message
topic: {}, messageId: {} to dead letter topic with topic: {}, messageId: {}",
+ message.getTopicName(), messageId,
deadLetterProducer.getTopic(), msgId);
+ try {
+ acknowledge(messageId);
+ } catch (Exception e) {
+ log.error("Acknowledge dead letter message
exception with topic: {}, messageId: {}",
+ message.getTopicName(), messageId);
+ }
+ });
}
+ return true;
Review comment:
You can't return true here because this will always return true even if
the message write to the dead letter topic fails. This is used to filter out
the messages that should not be delivered.
I think maybe you should change the method `processPossibleToDLQ` to
`processPossibleToDLQAsync`.
##########
File path:
pulsar-client/src/main/java/org/apache/pulsar/client/impl/ConsumerImpl.java
##########
@@ -107,6 +60,22 @@
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
+import java.io.IOException;
+import java.util.*;
Review comment:
Please avoid use import .*
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