kl0u commented on a change in pull request #13697: URL: https://github.com/apache/flink/pull/13697#discussion_r512846973
########## File path: flink-streaming-java/src/main/java/org/apache/flink/streaming/api/functions/sink/filesystem/FileLifeCycleListener.java ########## @@ -0,0 +1,41 @@ +/* + * 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.flink.streaming.api.functions.sink.filesystem; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.core.fs.Path; + +/** + * Listener about the status of file. + */ +@Internal +public interface FileLifeCycleListener<IN, BucketID> { + + /** + * Notifies a new file has been opened. + * + * <p>Note that this does not mean that the file has been created in the file system. It is + * only created logically and the actual file will be generated after it is committed. + * + * @param bucket The bucket of newly opened file. + * @param newPath The path of newly opened file. + */ + void openPartFile(Bucket<IN, BucketID> bucket, Path newPath); Review comment: Here we should not expose the whole `Bucket` as this is an internal class that can change anytime. We can pass here a new interface, something like `BucketInfo`, which is going to be implemented by the `Bucket` and which only exposes the necessary information. Currently, these are the public methods in the `Bucket`, ie. the `BucketID getBucketId()`, `Path getBucketPath()`, and `long getPartCounter()`. Actually, I would recommend to not expose the part counter because this will not be supported anymore in the new `FileSink`. If you need access to the in-progress file path, then simply pass that (the result of the `assembleNewPartPath()`) it in a field and have a method `getInProgressFilePath()` in the new `BucketInfo` interface. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
