feat(samples): add samples for appendable objects writes and reads

[chandra-siri]

feat(samples): add samples for appendable objects writes and reads

[snippet-bot]

Here is the summary of changes.

You are about to add 8 region tags.

• samples/snippets/zonal_buckets/storage_create_and_write_appendable_object.py:26, tag storage_create_and_write_appendable_object
• samples/snippets/zonal_buckets/storage_finalize_appendable_object_upload.py:26, tag storage_finalize_appendable_object_upload
• samples/snippets/zonal_buckets/storage_open_multiple_objects_ranged_read.py:30, tag storage_open_multiple_objects_ranged_read
• samples/snippets/zonal_buckets/storage_open_object_multiple_ranged_read.py:27, tag storage_open_object_multiple_ranged_read
• samples/snippets/zonal_buckets/storage_open_object_read_full_object.py:27, tag storage_open_object_read_full_object
• samples/snippets/zonal_buckets/storage_open_object_single_ranged_read.py:27, tag storage_open_object_single_ranged_read
• samples/snippets/zonal_buckets/storage_pause_and_resume_appendable_upload.py:26, tag storage_pause_and_resume_appendable_upload
• samples/snippets/zonal_buckets/storage_read_appendable_object_tail.py:35, tag storage_read_appendable_object_tail

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[gemini-code-assist]

Summary of Changes

Hello @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 significantly expands the sample code for Google Cloud Storage, focusing on experimental asynchronous operations for appendable objects and advanced ranged read capabilities. The new samples provide practical examples for developers to understand and utilize features like creating and appending to objects, finalizing uploads, pausing and resuming uploads, and performing various types of ranged reads, including concurrent reads across multiple objects and real-time 'tailing' of appendable data streams. These additions aim to enhance the utility and clarity of the client library's asynchronous functionalities.

Highlights

• New Appendable Object Write Sample: Added a sample demonstrating how to create a new appendable object in Google Cloud Storage and continuously append data to it using the AsyncAppendableObjectWriter.
• Appendable Object Finalization Sample: Introduced a sample that illustrates the process of creating, writing to, and then finalizing an appendable object, making it immutable after all data has been added.
• Pause and Resume Appendable Upload Sample: Provided a sample showcasing how to pause an ongoing appendable object upload by closing the current writer and then resuming it with a new writer, leveraging object generation numbers for consistency.
• Multiple Object Ranged Read Sample: Added a sample for concurrently downloading specific byte ranges from multiple Google Cloud Storage objects, demonstrating efficient parallel data retrieval.
• Single Object Multiple Ranged Read Sample: Included a sample that shows how to download several distinct byte ranges from a single Google Cloud Storage object into different buffers.
• Full Object Read Sample: Created a sample to demonstrate downloading the entire content of a specified Google Cloud Storage object.
• Appendable Object Tail Read Sample: Implemented a sample that simulates 'tailing' an appendable object, continuously reading new data as it is appended by a concurrent process, useful for real-time monitoring.

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[gemini-code-assist]

Code Review

This pull request introduces several new sample files demonstrating appendable object writes and reads. The samples are well-structured and cover a range of use cases. My review focuses on improving resource management by ensuring that streams are always closed, even in the case of errors, and on correcting some inconsistencies in comments and docstrings. Overall, these are great additions to the sample library.