importcom.google.cloud.storage.BlobInfo;importcom.google.cloud.storage.transfermanager.DownloadResult;importcom.google.cloud.storage.transfermanager.ParallelDownloadConfig;importcom.google.cloud.storage.transfermanager.TransferManager;importcom.google.cloud.storage.transfermanager.TransferManagerConfig;importjava.nio.file.Path;importjava.util.List;classAllowDivideAndConquerDownload{publicstaticvoiddivideAndConquerDownloadAllowed(List<BlobInfo>blobs,StringbucketName,PathdestinationDirectory){TransferManagertransferManager=TransferManagerConfig.newBuilder().setAllowDivideAndConquerDownload(true).build().getService();ParallelDownloadConfigparallelDownloadConfig=ParallelDownloadConfig.newBuilder().setBucketName(bucketName).setDownloadDirectory(destinationDirectory).build();List<DownloadResult>results=transferManager.downloadBlobs(blobs,parallelDownloadConfig).getDownloadResults();for(DownloadResultresult:results){System.out.println("Download of "+result.getInput().getName()+" completed with status "+result.getStatus());}}}

/** * TODO(developer): Uncomment the following lines before running the sample. */// The ID of your GCS bucket// const bucketName = 'your-unique-bucket-name';// The ID of the GCS file to download// const fileName = 'your-file-name';// The path to which the file should be downloaded// const destFileName = '/local/path/to/file.txt';// The size of each chunk to be downloaded// const chunkSize = 1024;// Imports the Google Cloud client libraryconst{Storage,TransferManager}=require('@google-cloud/storage');// Creates a clientconststorage=newStorage();// Creates a transfer manager clientconsttransferManager=newTransferManager(storage.bucket(bucketName));asyncfunctiondownloadFileInChunksWithTransferManager(){// Downloads the filesawaittransferManager.downloadFileInChunks(fileName,{destination:destFileName,chunkSizeBytes:chunkSize,});console.log(`gs://${bucketName}/${fileName} downloaded to${destFileName}.`);}downloadFileInChunksWithTransferManager().catch(console.error);

defdownload_chunks_concurrently(bucket_name,blob_name,filename,chunk_size=32*1024*1024,workers=8):"""Download a single file in chunks, concurrently in a process pool."""# The ID of your GCS bucket# bucket_name = "your-bucket-name"# The file to be downloaded# blob_name = "target-file"# The destination filename or path# filename = ""# The size of each chunk. The performance impact of this value depends on# the use case. The remote service has a minimum of 5 MiB and a maximum of# 5 GiB.# chunk_size = 32 * 1024 * 1024 (32 MiB)# The maximum number of processes to use for the operation. The performance# impact of this value depends on the use case, but smaller files usually# benefit from a higher number of processes. Each additional process occupies# some CPU and memory resources until finished. Threads can be used instead# of processes by passing `worker_type=transfer_manager.THREAD`.# workers=8fromgoogle.cloud.storageimportClient,transfer_managerstorage_client=Client()bucket=storage_client.bucket(bucket_name)blob=bucket.blob(blob_name)transfer_manager.download_chunks_concurrently(blob,filename,chunk_size=chunk_size,max_workers=workers)print("Downloaded{} to{}.".format(blob_name,filename))