v4.2.0

Release highlights

This release makes CloudBridge's entire public API strongly typed (shipped with a PEP 561 py.typed marker), adds cross-provider multipart upload for large objects, and removes the long-deprecated deprecation dependency along with the deprecated APIs it supported.

What's new

• Comprehensive type hints. The whole public interface is now annotated and ships a PEP 561 py.typed marker, so downstream users get a fully-typed API even though the underlying cloud SDKs are untyped. A mypy check runs in CI — the interface and base layers under a strict bar, and the SDK-wrapping providers under a pragmatic tier.
• Cross-provider multipart upload. Large object uploads now use multipart transfer with per-call TransferConfig knobs (threshold, part size, concurrency), with parts uploaded in parallel via cloned providers.

Breaking changes

• Removed the deprecation dependency and the long-expired deprecated APIs it supported (both marked removed_in=2.0):
  • the network_id= keyword alias on security.vm_firewalls.create — use network= instead;
  • the AZURE_VM_DEFAULT_USER_NAME environment/config variable — use AZURE_VM_DEFAULT_USERNAME instead.

Fixes and maintenance

• Typing surfaced and fixed several latent provider issues: Azure Volume.source now resolves to a Snapshot object, the Azure multi-firewall merge on launch passes the required network, and Azure parse_url reports a meaningful parameter on error.
• GCP volume attach/detach now waits for the operation to complete, and the attachments check was corrected.
• Reconciled numerous cross-provider return-type and behaviour inconsistencies to match the interface — e.g. start/stop/delete return None consistently, firewall-rule direction returns the TrafficDirection enum, and fatal missing-id paths raise ProviderInternalException instead of returning None.

Build and CI

• Added a mypy tox environment (tox -e mypy) and a CI step; the lint environment now also enforces import order via flake8-import-order.

Pull Requests

• Add cross-provider multipart upload support by @nuwang in #333
• Wait for GCP volume attach/detach operations; fix attachments check by @nuwang in #334
• Add comprehensive typing to cloudbridge + mypy tox check by @nuwang in #335
• Remove the deprecation dependency and long-expired deprecated APIs by @nuwang in #336
• Fix latent provider bugs surfaced during the typing work by @nuwang in #337

Full Changelog: v4.1.0...v4.2.0