[PR #3818] [MERGED] [client] Feature/lazy manageable feature by mgm server #21602

New Issue

saavagebueno · 2026-08-05T05:08:42-04:00

saavagebueno commented

2026-08-05 05:08:42 -04:00

📋 Pull Request Information

Original PR: https://github.com/netbirdio/netbird/pull/3818
Author: @pappz
Created: 5/13/2025
Status: ✅ Merged
Merged: 5/15/2025
Merged by: @pappz

Base: feature/lazy-connection ← Head: feature/lazy-connection-add-featureflag

📝 Commits (7)

4054e4b Add lazy conn feature flag for mgm
873dbdb Start to use update feature function
a6e4093 Code cleaning
3e24f3a Add log
848eb7b Fix to use proper context
39c18d5 Add comments
8ee5987 Fix deadlock

📊 Changes

5 files changed (+427 additions, -325 deletions)

View changed files

📝 client/internal/conn_mgr.go (+105 -43)
📝 client/internal/engine.go (+5 -1)
📝 client/internal/lazyconn/manager/manager.go (+31 -8)
📝 management/proto/management.pb.go (+284 -273)
📝 management/proto/management.proto (+2 -0)

📄 Description

Describe your changes

Add an option to the management proto to enable or disable the lazy connection feature on the peer side. Command-line options and environment variables override the management configuration.

When the feature is enabled: Start the lazy connection manager and add all peers to the manager in the "active" st-ate.
When the feature is disabled: Stop the lazy connection manager and establish connections to all peers in the store.

Fix deadlock

The conn_mgr is protected by a mutex. However, because some internal functions are called via callbacks from the lazy connection manager, a deadlock can occur. The solution is to completely eliminate the callbacks.

Issue ticket number and link

Stack

Checklist

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)
Extended the README / documentation, if necessary

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/netbirdio/netbird/pull/3818 **Author:** [@pappz](https://github.com/pappz) **Created:** 5/13/2025 **Status:** ✅ Merged **Merged:** 5/15/2025 **Merged by:** [@pappz](https://github.com/pappz) **Base:** `feature/lazy-connection` ← **Head:** `feature/lazy-connection-add-featureflag` --- ### 📝 Commits (7) - [`4054e4b`](https://github.com/netbirdio/netbird/commit/4054e4b589b87e62becbefe931b41c568906e8e7) Add lazy conn feature flag for mgm - [`873dbdb`](https://github.com/netbirdio/netbird/commit/873dbdb192e60ce794e75709f215e5e79376a618) Start to use update feature function - [`a6e4093`](https://github.com/netbirdio/netbird/commit/a6e4093079cfd8029562c05a86666f03f2d168e8) Code cleaning - [`3e24f3a`](https://github.com/netbirdio/netbird/commit/3e24f3a703c56b37cf7e9357990a46640f00a91d) Add log - [`848eb7b`](https://github.com/netbirdio/netbird/commit/848eb7b2cc3bec41ad05395ca3d19288b89a6ade) Fix to use proper context - [`39c18d5`](https://github.com/netbirdio/netbird/commit/39c18d57fbfe4ee072fd246525776779cf612f17) Add comments - [`8ee5987`](https://github.com/netbirdio/netbird/commit/8ee59873fa6317d99a8d7b8d32b043f32030438d) Fix deadlock ### 📊 Changes **5 files changed** (+427 additions, -325 deletions) <details> <summary>View changed files</summary> 📝 `client/internal/conn_mgr.go` (+105 -43) 📝 `client/internal/engine.go` (+5 -1) 📝 `client/internal/lazyconn/manager/manager.go` (+31 -8) 📝 `management/proto/management.pb.go` (+284 -273) 📝 `management/proto/management.proto` (+2 -0) </details> ### 📄 Description ## Describe your changes Add an option to the management proto to enable or disable the lazy connection feature on the peer side. Command-line options and environment variables override the management configuration. - When the feature is enabled: Start the lazy connection manager and add all peers to the manager in the "active" st-ate. - When the feature is disabled: Stop the lazy connection manager and establish connections to all peers in the store. Fix deadlock The conn_mgr is protected by a mutex. However, because some internal functions are called via callbacks from the lazy connection manager, a deadlock can occur. The solution is to completely eliminate the callbacks. ## Issue ticket number and link ## Stack  ### Checklist - [ ] Is it a bug fix - [ ] Is a typo/documentation fix - [x] Is a feature enhancement - [ ] It is a refactor - [ ] Created tests that fail without the change (if possible) - [ ] Extended the README / documentation, if necessary --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

saavagebueno added the pull-request label 2026-08-05 05:08:42 -04:00

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Reference: DYNR/netbird#21602