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Summary of ChangesHello @chandra-siri, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request introduces the capability to perform XML Multipart Uploads (MPU) for Google Cloud Storage objects. This new feature allows for breaking down large files into smaller, manageable parts that can be uploaded concurrently, offering a more robust and potentially faster upload experience. It enhances the flexibility of the upload process by supporting file-like objects as data sources and provides a configurable option to choose between XML MPU and traditional resumable uploads. Highlights
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Code Review
This pull request introduces changes to support XML Multipart Uploads (MPU) from file-like objects and adds a new XML MPU upload path in the Blob class, seemingly for comparison against resumable uploads. While the changes to XMLMPUPart to accept a file_obj are a good addition, the implementation within blob.py contains several issues. There are debugging print statements, incorrect comments, and most critically, the main upload logic in _do_upload has been replaced with benchmarking code that is not production-ready. My review includes several suggestions to clean up the code and a critical comment to address the benchmarking implementation before this can be merged.
| container.register_part(part_num, etag) | ||
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| part_number += len(chunk_batch) | ||
| print("num parts uploaded:", part_number - 1) |
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This print statement appears to be for debugging. It should be removed from production code. Consider using the logging module if this information is valuable for diagnostics.
| print("num parts uploaded:", part_number - 1) | ||
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| res = container.finalize(transport) | ||
| print("MPU Complete Response:", res) |
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This print statement appears to be for debugging. It should be removed from production code. Consider using the logging module if this information is valuable for diagnostics.
| if (filename is None and file_obj is None) or ( | ||
| filename is not None and file_obj is not None | ||
| ): |
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This condition can be simplified for better readability. A more Pythonic way to express that exactly one of filename or file_obj must be provided is if (filename is None) == (file_obj is None):.
| import time | ||
| import base64 | ||
| from concurrent.futures import ThreadPoolExecutor | ||
| import concurrent.futures |
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This import is redundant. ThreadPoolExecutor is already imported from concurrent.futures on the previous line, and concurrent.futures itself is not used directly in this file. You can remove this line.
| "storageClass": "x-goog-storage-class", | ||
| } | ||
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| XML_CHUNK_SIZE = 100 * 1024 * 1024 # 8 MiB |
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The comment here is incorrect. 100 * 1024 * 1024 is 100 MiB, not 8 MiB. Please update the comment to reflect the correct size.
| XML_CHUNK_SIZE = 100 * 1024 * 1024 # 8 MiB | |
| XML_CHUNK_SIZE = 100 * 1024 * 1024 # 100 MiB |
| """ | ||
| 1. This should initialize XMLMPUContainer, container.initate(), you can keep filename as None. | ||
| 2. read chunks of data from stream, read at most `n` chunks (even if the file_stream is more, hold the stream there) | ||
| Where each `chunk_size` is provided as `XML_CHUNK_SIZE` | ||
| 3. Spawn multiple threads to upload each chunk using | ||
| part = XMLMPUPart() | ||
| part.upload() -> | ||
| each part upload should return (part_number, etag) | ||
| store these part numbers in a list/dictionary | ||
| using `container.register_part(part_number, etag)` | ||
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| 4. read further chunks from stream and repeat step 3 until stream is exhausted | ||
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| 5. Once all parts are uploaded, call | ||
| `container.finalize(blob._get_transport(client))` | ||
| to complete the multipart upload | ||
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| """ |
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The docstring for this method appears to be a set of implementation notes. It should be converted into a proper docstring that explains what the method does, its parameters (file_obj, retry, content_type, num_of_threads), and what it returns. This will improve maintainability and make the code easier to understand for other developers.
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Fixes #<issue_number_goes_here> 🦕