kafka CheckpointFileWithFailureHandler 源码
kafka CheckpointFileWithFailureHandler 代码
文件路径：/core/src/main/scala/kafka/server/checkpoints/CheckpointFileWithFailureHandler.scala
/**
* 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 kafka.server.checkpoints
import kafka.server.LogDirFailureChannel
import org.apache.kafka.common.errors.KafkaStorageException
import org.apache.kafka.server.common.CheckpointFile
import CheckpointFile.EntryFormatter
import java.io._
import scala.collection.Seq
import scala.jdk.CollectionConverters._
class CheckpointFileWithFailureHandler[T](val file: File,
version: Int,
formatter: EntryFormatter[T],
logDirFailureChannel: LogDirFailureChannel,
logDir: String) {
private val checkpointFile = new CheckpointFile[T](file, version, formatter)
def write(entries: Iterable[T]): Unit = {
try {
checkpointFile.write(entries.toSeq.asJava)
} catch {
case e: IOException =>
val msg = s"Error while writing to checkpoint file ${file.getAbsolutePath}"
logDirFailureChannel.maybeAddOfflineLogDir(logDir, msg, e)
throw new KafkaStorageException(msg, e)
}
}
def read(): Seq[T] = {
try {
checkpointFile.read().asScala
} catch {
case e: IOException =>
val msg = s"Error while reading checkpoint file ${file.getAbsolutePath}"
logDirFailureChannel.maybeAddOfflineLogDir(logDir, msg, e)
throw new KafkaStorageException(msg, e)
}
}
}
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