chore: Snapshots on R2

[gonzalezzfelipe]

Summary by CodeRabbit

• Chores
  • Updated the default snapshot download endpoint configuration. The fallback download host has been changed to a new endpoint when no custom download URL is specified, while maintaining the same path structure for snapshot retrieval.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 9356d696-bad9-4422-b3d7-0fdd6199a728

📥 Commits

Reviewing files that changed from the base of the PR and between ceae462 and 3a6d38d.

📒 Files selected for processing (1)

• src/bin/dolos/bootstrap/snapshot.rs

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📝 Walkthrough

Walkthrough

This PR updates the default fallback host for snapshot downloads from Amazon S3 to dolos-snapshots.txpipe.cloud. The path template structure with version, network, variant, and point variables remains unchanged. The change applies only when the configuration does not explicitly specify a download URL.

Changes

Snapshot Download Host Configuration

Layer / File(s)	Summary
Default snapshot URL template update src/bin/dolos/bootstrap/snapshot.rs	The DEFAULT_URL_TEMPLATE constant changes its host from dolos-snapshots.s3-accelerate.amazonaws.com to dolos-snapshots.txpipe.cloud, preserving the ${VERSION}/${NETWORK}/${VARIANT}/${POINT}.tar.gz path structure used as a fallback when no custom download URL is configured.

🐰 A snapshot lives in the cloud so bright,
From S3's embrace to txpipe's light,
The path stays true, the variables gleam,
Dolos downloads with new-host dream! ✨

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'chore: Snapshots on R2' accurately reflects the main change: updating the snapshot download URL from Amazon S3 to Cloudflare R2 (txpipe.cloud).
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/snapshots-on-r2

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