From c4c2f570ff06ae0d1942781e8e1b3af3fd45f084 Mon Sep 17 00:00:00 2001
From: Erik Timan <erik.timan@emqx.io>
Date: Tue, 7 Feb 2023 14:23:04 +0100
Subject: [PATCH 1/3] feat(emqx_prometheus): expose live_connections stats to
 prometheus

---
 apps/emqx_prometheus/src/emqx_prometheus.erl | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/apps/emqx_prometheus/src/emqx_prometheus.erl b/apps/emqx_prometheus/src/emqx_prometheus.erl
index b58c4cc5f..5342a6d71 100644
--- a/apps/emqx_prometheus/src/emqx_prometheus.erl
+++ b/apps/emqx_prometheus/src/emqx_prometheus.erl
@@ -185,6 +185,10 @@ emqx_collect(emqx_connections_count, Stats) ->
     gauge_metric(?C('connections.count', Stats));
 emqx_collect(emqx_connections_max, Stats) ->
     gauge_metric(?C('connections.max', Stats));
+emqx_collect(emqx_live_connections_count, Stats) ->
+    gauge_metric(?C('live_connections.count', Stats));
+emqx_collect(emqx_live_connections_max, Stats) ->
+    gauge_metric(?C('live_connections.max', Stats));
 
 %% sessions
 emqx_collect(emqx_sessions_count, Stats) ->
@@ -471,6 +475,8 @@ emqx_collect(emqx_cluster_nodes_stopped, ClusterData) ->
 emqx_stats() ->
     [ emqx_connections_count
     , emqx_connections_max
+    , emqx_live_connections_count
+    , emqx_live_connections_max
     , emqx_sessions_count
     , emqx_sessions_max
     , emqx_topics_count

From 8f4e3908404be41ab3d3ac28de845f29e2a880da Mon Sep 17 00:00:00 2001
From: Erik Timan <erik.timan@emqx.io>
Date: Tue, 7 Feb 2023 15:17:37 +0100
Subject: [PATCH 2/3] chore: bump VSN and appup

---
 apps/emqx_prometheus/src/emqx_prometheus.app.src   | 2 +-
 apps/emqx_prometheus/src/emqx_prometheus.appup.src | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/apps/emqx_prometheus/src/emqx_prometheus.app.src b/apps/emqx_prometheus/src/emqx_prometheus.app.src
index ded1bf46d..6e7d7400f 100644
--- a/apps/emqx_prometheus/src/emqx_prometheus.app.src
+++ b/apps/emqx_prometheus/src/emqx_prometheus.app.src
@@ -1,6 +1,6 @@
 {application, emqx_prometheus,
  [{description, "Prometheus for EMQ X"},
-  {vsn, "4.3.1"}, % strict semver, bump manually!
+  {vsn, "4.3.2"}, % strict semver, bump manually!
   {modules, []},
   {registered, [emqx_prometheus_sup]},
   {applications, [kernel,stdlib,prometheus]},
diff --git a/apps/emqx_prometheus/src/emqx_prometheus.appup.src b/apps/emqx_prometheus/src/emqx_prometheus.appup.src
index a06d65fe1..1234d5395 100644
--- a/apps/emqx_prometheus/src/emqx_prometheus.appup.src
+++ b/apps/emqx_prometheus/src/emqx_prometheus.appup.src
@@ -1,9 +1,9 @@
 %% -*- mode: erlang -*-
 %% Unless you know what you are doing, DO NOT edit manually!!
 {VSN,
-  [{"4.3.0",
-    [{load_module,emqx_prometheus,brutal_purge,soft_purge,[]}]},
+  [{"4.3.1",[{load_module,emqx_prometheus,brutal_purge,soft_purge,[]}]},
+   {"4.3.0",[{load_module,emqx_prometheus,brutal_purge,soft_purge,[]}]},
    {<<".*">>,[]}],
-  [{"4.3.0",
-    [{load_module,emqx_prometheus,brutal_purge,soft_purge,[]}]},
+  [{"4.3.1",[{load_module,emqx_prometheus,brutal_purge,soft_purge,[]}]},
+   {"4.3.0",[{load_module,emqx_prometheus,brutal_purge,soft_purge,[]}]},
    {<<".*">>,[]}]}.

From 3d41e58d80f0c6c74bc08c3d93cd8a7b155dd876 Mon Sep 17 00:00:00 2001
From: Erik Timan <erik.timan@emqx.io>
Date: Tue, 7 Feb 2023 15:05:09 +0100
Subject: [PATCH 3/3] chore: update changes

---
 changes/v4.4.15-en.md | 2 ++
 changes/v4.4.15-zh.md | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/changes/v4.4.15-en.md b/changes/v4.4.15-en.md
index 260166da2..d8ccfefdd 100644
--- a/changes/v4.4.15-en.md
+++ b/changes/v4.4.15-en.md
@@ -16,6 +16,8 @@
 
 - Add more debug logs for authentication and ACL [#9943](https://github.com/emqx/emqx/pull/9943).
 
+- Expose the stats `live_connections.count` and `live_connections.max` to Prometheus [#9929](https://github.com/emqx/emqx/pull/9929).
+
 ## Bug fixes
 
 - Fixed an error when forward MQTT messages with User-Property using the `republish` action [#9942](https://github.com/emqx/emqx/pull/9942).
diff --git a/changes/v4.4.15-zh.md b/changes/v4.4.15-zh.md
index a382e0c94..03eb31522 100644
--- a/changes/v4.4.15-zh.md
+++ b/changes/v4.4.15-zh.md
@@ -16,6 +16,8 @@
 
 - 为认证和授权添加了更多调试日志 [#9943](https://github.com/emqx/emqx/pull/9943)。
 
+- 将统计数据 `live_connections.count` 和 `live_connections.max` 公开给 Prometheus [#9929](https://github.com/emqx/emqx/pull/9929).
+
 ## 修复
 
 - 修复使用 `消息重发布` 动作转发带 User-Property 的 MQTT 消息时出错的问题 [#9942](https://github.com/emqx/emqx/pull/9942)。