murong00 commented on a change in pull request #4168: [Issue 4167]
[pulsar-broker] Support to get the number of current messages
URL: https://github.com/apache/pulsar/pull/4168#discussion_r279621321
##########
File path:
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/impl/PersistentTopicsBase.java
##########
@@ -1522,4 +1525,38 @@ protected MessageId internalGetLastMessageId(boolean
authoritative) {
return messageId;
}
+
+ protected long internalGetMessageCount(boolean authoritative) {
+ validateAdminOperationOnTopic(authoritative);
+
+ if (!(getTopicReference(topicName) instanceof PersistentTopic)) {
+ log.error("[{}] Not supported operation of non-persistent topic
{}", clientAppId(), topicName);
+ throw new RestException(Status.METHOD_NOT_ALLOWED,
+ "GetMessageCount on a non-persistent topic is not allowed");
+ }
+
+ Reader<byte[]> reader = null;
+ final AtomicLong count = new AtomicLong();
+
+ try {
+ reader = pulsar().getClient().newReader()
Review comment:
okay, thanks a lot. I'll seek advice from you if I plan to try. Just close
this PR to leave the issue free to others.
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