Samrat002 commented on code in PR #27187: URL: https://github.com/apache/flink/pull/27187#discussion_r2755982227
########## flink-filesystems/flink-s3-fs-native/src/main/java/org/apache/flink/fs/s3native/NativeS3BulkCopyHelper.java: ########## @@ -0,0 +1,151 @@ +/* + * 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.fs.s3native; + +import org.apache.flink.annotation.Internal; +import org.apache.flink.core.fs.ICloseableRegistry; +import org.apache.flink.core.fs.PathsCopyingFileSystem; + +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import software.amazon.awssdk.transfer.s3.S3TransferManager; +import software.amazon.awssdk.transfer.s3.model.CompletedCopy; +import software.amazon.awssdk.transfer.s3.model.DownloadFileRequest; +import software.amazon.awssdk.transfer.s3.model.FileDownload; + +import java.io.File; +import java.io.IOException; +import java.nio.file.Files; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.ExecutionException; + +@Internal +public class NativeS3BulkCopyHelper { + + private static final Logger LOG = LoggerFactory.getLogger(NativeS3BulkCopyHelper.class); + + private final S3TransferManager transferManager; + private final int maxConcurrentCopies; + + public NativeS3BulkCopyHelper(S3TransferManager transferManager, int maxConcurrentCopies) { + this.transferManager = transferManager; + this.maxConcurrentCopies = maxConcurrentCopies; + } + + public void copyFiles( + List<PathsCopyingFileSystem.CopyRequest> requests, ICloseableRegistry closeableRegistry) + throws IOException { + + if (requests.isEmpty()) { + return; + } + + LOG.info("Starting bulk copy of {} files using S3TransferManager", requests.size()); + + List<CompletableFuture<CompletedCopy>> copyFutures = new ArrayList<>(); + + for (int i = 0; i < requests.size(); i++) { + PathsCopyingFileSystem.CopyRequest request = requests.get(i); + String sourceUri = request.getSource().toUri().toString(); + if (sourceUri.startsWith("s3://") || sourceUri.startsWith("s3a://")) { + copyS3ToLocal(request, copyFutures); Review Comment: make sense -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
