kafka RecordBatchIterator 源码
kafka RecordBatchIterator 代码
文件路径：/clients/src/main/java/org/apache/kafka/common/record/RecordBatchIterator.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.kafka.common.record;
import org.apache.kafka.common.KafkaException;
import org.apache.kafka.common.errors.CorruptRecordException;
import org.apache.kafka.common.utils.AbstractIterator;
import java.io.EOFException;
import java.io.IOException;
class RecordBatchIterator<T extends RecordBatch> extends AbstractIterator<T> {
private final LogInputStream<T> logInputStream;
RecordBatchIterator(LogInputStream<T> logInputStream) {
this.logInputStream = logInputStream;
}
@Override
protected T makeNext() {
try {
T batch = logInputStream.nextBatch();
if (batch == null)
return allDone();
return batch;
} catch (EOFException e) {
throw new CorruptRecordException("Unexpected EOF while attempting to read the next batch", e);
} catch (IOException e) {
throw new KafkaException(e);
}
}
}
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