review fix

* `what-new.adoc` and `annotation-error-handling.adoc`
* add javadoc in `SeekUtils` and `AfterRollbackProcessor`
* change `ListenerUtils.nextBackOff` public to default

Author: Wzy19930507

spring-kafka-docs/src/main/antora/modules/ROOT/pages/kafka/annotation-error-handling.adoc

@@ -451,7 +451,11 @@ AfterRollbackProcessor<String, String> processor =
 When you do not use transactions, you can achieve similar functionality by configuring a `DefaultErrorHandler`.
 See xref:kafka/annotation-error-handling.adoc#error-handlers[Container Error Handlers].
 
-IMPORTANT: Recovery is not possible with a batch listener, since the framework has no knowledge about which record in the batch keeps failing.
+Starting with version 3.2, Recovery can now recover (skip) entire batch of records that keeps failing.
+Set `ContainerProperties.setBatchRecoverAfterRollback(true)` to enable this feature.
+
+IMPORTANT: Default behavior, recovery is not possible with a batch listener,
+since the framework has no knowledge about which record in the batch keeps failing.
 In such cases, the application listener must handle a record that keeps failing.
 
 See also xref:kafka/annotation-error-handling.adoc#dead-letters[Publishing Dead-letter Records].

spring-kafka-docs/src/main/antora/modules/ROOT/pages/whats-new.adoc

@@ -7,3 +7,8 @@
 This section covers the changes made from version 3.1 to version 3.2.
 For changes in earlier version, see xref:appendix/change-history.adoc[Change History].
 
+[[x32-after-rollback-processing]]
+=== After Rollback Processing
+
+A new `AfterRollbackProcessor` API `processBatch` is provided.
+See xref:kafka/annotation-error-handling.adoc#after-rollback[After-rollback Processor] for more information.

spring-kafka/src/main/java/org/springframework/kafka/listener/AfterRollbackProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -64,6 +64,19 @@ public interface AfterRollbackProcessor<K, V> {
 	void process(List<ConsumerRecord<K, V>> records, Consumer<K, V> consumer,
 			MessageListenerContainer container, Exception exception, boolean recoverable, EOSMode eosMode);
 
+	/**
+	 * Process the entire batch of records.
+	 * Recoverable will be true if the container is processing entire batch of records;
+	 * @param records the records.
+	 * @param recordList the record list.
+	 * @param consumer the consumer.
+	 * @param container the container.
+	 * @param exception the exception
+	 * @param recoverable the recoverable.
+	 * @param eosMode the {@link EOSMode}.
+	 * @since 3.2
+	 * @see #isProcessInTransaction()
+	 */
 	default void processBatch(ConsumerRecords<K, V> records, List<ConsumerRecord<K, V>> recordList,
 			Consumer<K, V> consumer, MessageListenerContainer container, Exception exception,
 			boolean recoverable, ContainerProperties.EOSMode eosMode) {

spring-kafka/src/main/java/org/springframework/kafka/listener/ListenerUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -139,7 +139,7 @@ public static void unrecoverableBackOff(BackOff backOff, Map<Thread, BackOffExec
 		}
 	}
 
-	public static long nextBackOff(BackOff backOff, Map<Thread, BackOffExecution> executions) {
+	static long nextBackOff(BackOff backOff, Map<Thread, BackOffExecution> executions) {
 
 		Thread currentThread = Thread.currentThread();
 		BackOffExecution backOffExecution = executions.get(currentThread);

spring-kafka/src/main/java/org/springframework/kafka/listener/SeekUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -133,6 +133,12 @@ public static boolean doSeeks(List<ConsumerRecord<?, ?>> records, Consumer<?, ?>
 		return skipped.get();
 	}
 
+	/**
+	 * Seek records to begin position, optionally skipping the first.
+	 * @param records the records.
+	 * @param consumer the consumer.
+	 * @param logger a {@link LogAccessor} for seek errors.
+	 */
 	public static void doSeeksToBegin(List<ConsumerRecord<?, ?>> records, Consumer<?, ?> consumer,
 			LogAccessor logger) {