Add support for Google Cloud Storage

[kgodlewski]

Summary by Sourcery

Add support for Google Cloud Storage by returning provider information from the file‐URL fetch API, routing uploads to provider‐specific implementations, and updating tests and CI to cover both Azure and GCP

New Features:

• Support uploading files to Google Cloud Storage using signed URLs
• Extend fetch_file_storage_urls to return storage provider along with URL

Enhancements:

• Dispatch file uploads to provider-specific functions (upload_to_azure or upload_to_gcp)
• Implement resumable, chunked GCP uploads with backoff and retry logic
• Update end-to-end download logic to use generic signed URL endpoint and HTTP requests
• Configure pytest for async tests and adjust test fixtures for multiple providers

CI:

• Extend GitHub Actions e2e workflow matrix to run against both AZURE and GCP targets and streamline Python version matrix

Tests:

• Parameterize and extend unit tests to cover both Azure and GCP upload flows and error handling
• Add tests to verify correct provider dispatch and retry behavior for temporary versus terminal errors

[sourcery-ai]

Reviewer's Guide

This PR integrates Google Cloud Storage alongside Azure by refactoring the upload flow into provider‐specific functions, enriching the signed URL API with provider metadata, and updating tests and CI to support multi‐provider scenarios.

File-Level Changes

Change	Details	Files
Introduce multi‐provider dispatch in FileUploaderThread	Extract (provider, url) from fetch_file_storage_urls and pass into _upload_file Change _upload_file signature to accept provider and route to upload_to_azure or upload_to_gcp Raise error on unsupported provider	src/neptune_scale/sync/sync_process.py
Refactor generic upload into provider-specific modules	Remove generic upload_file function Implement upload_to_azure with retry and backoff Add upload_to_gcp module with chunked, resumable transfers and retry logic	src/neptune_scale/sync/sync_process.py src/neptune_scale/sync/google_storage.py
Extend signed‐URL handling to include provider info	Change fetch_file_storage_urls to return dict of path -> (provider, url) Update ApiClient to use signed_url_generic endpoint Adjust e2e download flow to use HTTP GET instead of BlobClient	src/neptune_scale/sync/sync_process.py src/neptune_scale/net/api_client.py tests/e2e/test_fetcher/files.py
Parameterize and refactor unit tests for multi‐provider	Add pytest fixture to loop over 'azure' and 'gcp' Replace mock_upload_file with provider‐aware mock_upload_func Update assertions to validate calls per provider and error classification	tests/unit/test_sync_process.py
Update CI matrix and project configuration for Azure/GCP	Reduce supported Python versions and add env_target matrix for AZURE/GCP Use dynamic secret names per provider and allow self-signed certificates Add pytest asyncio configuration in pyproject.toml	.github/workflows/tests-e2e.yml pyproject.toml

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[pitercl]

It this temporary or supposed to stay?

[kgodlewski]

This is temporary until the test instance is finalized

[pitercl]

Reminder: to be removed.