StevenLuMT commented on code in PR #24222:
URL: https://github.com/apache/pulsar/pull/24222#discussion_r2062779057
##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/impl/PersistentTopicsBase.java:
##########
@@ -5489,4 +5489,53 @@ protected
CompletableFuture<AutoSubscriptionCreationOverride> internalGetAutoSub
return null;
}));
}
+
+ protected CompletableFuture<MessageId>
internalGetMessageIDByOffsetAsync(Long offset, boolean authoritative) {
+ int partitionIndex = topicName.getPartitionIndex();
+ CompletableFuture<Void> future =
validateTopicOperationAsync(topicName, TopicOperation.PEEK_MESSAGES);
+ return future.thenCompose(__ -> {
+ if (topicName.isGlobal()) {
+ return
validateGlobalNamespaceOwnershipAsync(namespaceName);
+ } else {
+ return CompletableFuture.completedFuture(null);
+ }
+ }).thenCompose(__ -> {
+ if (topicName.isPartitioned()) {
+ return CompletableFuture.completedFuture(null);
+ } else {
+ return getPartitionedTopicMetadataAsync(topicName,
authoritative, false)
+ .thenAccept(topicMetadata -> {
+ if (topicMetadata.partitions > 0) {
+ log.warn("[{}] Not supported
getMessageIdByOffset operation on "
+ + "partitioned-topic
{}", clientAppId(), topicName);
+ throw new
RestException(Status.METHOD_NOT_ALLOWED,
+ "GetMessageIDByOffset is not
allowed on partitioned-topic");
+ }
+ });
+ }
+ }).thenCompose(ignore ->
validateTopicOwnershipAsync(topicName, authoritative))
+ .thenCompose(__ -> getTopicReferenceAsync(topicName))
+ .thenCompose(topic -> {
+ if (!(topic instanceof PersistentTopic persistentTopic)) {
+ log.error("[{}] Get message id by offset on a non-persistent
topic {} is not allowed",
+ clientAppId(), topicName);
+ return FutureUtil.failedFuture(new
RestException(Status.METHOD_NOT_ALLOWED,
+ "Get message id by offset on a non-persistent topic is
not allowed"));
+ }
+ ManagedLedger managedLedger = persistentTopic.getManagedLedger();
+ return managedLedger.asyncFindPosition(entry -> {
+ try {
+ BrokerEntryMetadata brokerEntryMetadata =
+
Commands.parseBrokerEntryMetadataIfExist(entry.getDataBuffer());
+ return brokerEntryMetadata.getIndex() < offset;
+ } catch (Exception e) {
Review Comment:
Need to determine whether brokerEntryMetadata is empty?
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