[PR #6659] [client] Set routeselector atomic exit node #26578

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saavagebueno · 2026-08-05T07:07:32-04:00

saavagebueno commented

2026-08-05 07:07:32 -04:00

Original Pull Request: https://github.com/netbirdio/netbird/pull/6659

State: closed
Merged: No

Describe your changes

Make exit-node reconciliation atomic by moving the full deselect/reselect logic into a single locked RouteSelector.SetExclusiveExitNode method, preventing a concurrent DeselectAllRoutes from being silently undone by an interleaved re-selection of the preferred exit node.

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Is it a bug fix
Is a typo/documentation fix
Is a feature enhancement
It is a refactor
Created tests that fail without the change (if possible)
This change does not modify the public API, gRPC protocols, functionality behavior, CLI / service flags, or introduce a new feature — OR I have discussed it with the NetBird team beforehand (link the issue / Slack thread in the description). See CONTRIBUTING.md.

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Summary by CodeRabbit

Bug Fixes
- Improved exit-node selection so only the preferred exit node remains active when reconciling routes.
- Kept a global “deselect all” state intact, avoiding unintended re-selection.
- Made route updates more reliable by applying selection changes atomically.

**Original Pull Request:** https://github.com/netbirdio/netbird/pull/6659 **State:** closed **Merged:** No --- ## Describe your changes Make exit-node reconciliation atomic by moving the full deselect/reselect logic into a single locked RouteSelector.SetExclusiveExitNode method, preventing a concurrent DeselectAllRoutes from being silently undone by an interleaved re-selection of the preferred exit node. ## Issue ticket number and link ## Stack  ### Checklist - [x] Is it a bug fix - [ ] Is a typo/documentation fix - [ ] Is a feature enhancement - [ ] It is a refactor - [ ] Created tests that fail without the change (if possible) - [ ] This change does **not** modify the public API, gRPC protocols, functionality behavior, CLI / service flags, or introduce a new feature — **OR** I have discussed it with the NetBird team beforehand (link the issue / Slack thread in the description). See [CONTRIBUTING.md](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTING.md#discuss-changes-with-the-netbird-team-first). > By submitting this pull request, you confirm that you have read and agree to the terms of the [Contributor License Agreement](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT.md). ## Documentation Select exactly one: - [ ] I added/updated documentation for this change - [x] Documentation is **not needed** for this change (explain why) ### Docs PR URL (required if "docs added" is checked) Paste the PR link from https://github.com/netbirdio/docs here: https://github.com/netbirdio/docs/pull/__  ## Summary by CodeRabbit * **Bug Fixes** * Improved exit-node selection so only the preferred exit node remains active when reconciling routes. * Kept a global “deselect all” state intact, avoiding unintended re-selection. * Made route updates more reliable by applying selection changes atomically.

saavagebueno added the pull-request label 2026-08-05 07:07:32 -04:00

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Reference: DYNR/netbird#26578