stacklok / toolhive / 20849166714

50%

Build Type

push

github

Committed by web-flow

Commit Message

Implement BackendReconciler for vMCP dynamic backend discovery (#3212)

* Implement BackendReconciler for vMCP dynamic backend discovery

Add BackendReconciler that watches MCPServer and MCPRemoteProxy resources
in Kubernetes and updates the DynamicRegistry when backends change. This
enables vMCP servers to dynamically discover backends without restarts.

Closes: #3001

* Add comprehensive dynamic backend discovery lifecycle E2E tests

Enhance VirtualMCPServer lifecycle testing with three new test cases that
verify BackendReconciler behavior for dynamic backend discovery:

1. Discovery of new backends added to the group - verifies backends
   appear in vMCP /status endpoint after creation
2. Removal of deleted backends from the group - verifies backends
   are removed from vMCP /status after deletion
3. GroupRef filtering and isolation - verifies backends from different
   groups are not discovered, ensuring proper security isolation

These tests validate the K8s manager infrastructure and ensure the
BackendReconciler correctly updates the DynamicRegistry as backends
change at runtime.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* Fix ci

* fixes from review

---------

Co-authored-by: taskbot <taskbot@users.noreply.github.com>
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Run Details

127 of 226 new or added lines in 3 files covered. (56.19%)

5 existing lines in 1 file now uncovered.

29141 of 58202 relevant lines covered (50.07%)

57.6 hits per line