From 7b27d49a40cd55215d193c440a15b131a93b99f0 Mon Sep 17 00:00:00 2001
From: Feng Lee <feng@emqx.io>
Date: Sun, 14 Jul 2019 08:59:38 +0800
Subject: [PATCH] Add new metric 'channel.gc.cnt'

---
 src/emqx_metrics.erl | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/emqx_metrics.erl b/src/emqx_metrics.erl
index 5df7c02e9..1f3d389fa 100644
--- a/src/emqx_metrics.erl
+++ b/src/emqx_metrics.erl
@@ -134,10 +134,15 @@
     {counter, 'messages.forward'}        % Messages forward
 ]).
 
+-define(CHAN_METRICS, [
+    {counter, 'channel.gc.cnt'}
+]).
+
 -define(MQTT_METRICS, [
     {counter, 'auth.mqtt.anonymous'}
 ]).
 
+
 -record(state, {next_idx = 1}).
 
 -record(metric, {name, type, idx}).
@@ -262,7 +267,7 @@ update_counter(Name, Value) ->
 %%--------------------------------------------------------------------
 
 %% @doc Inc packets received.
--spec(inc_recv(emqx_mqtt_types:packet()) -> ok).
+-spec(inc_recv(emqx_types:packet()) -> ok).
 inc_recv(Packet) ->
     inc('packets.received'),
     do_inc_recv(Packet).
@@ -299,7 +304,7 @@ do_inc_recv(_Packet) ->
     ignore.
 
 %% @doc Inc packets sent. Will not count $SYS PUBLISH.
--spec(inc_sent(emqx_mqtt_types:packet()) -> ok | ignore).
+-spec(inc_sent(emqx_types:packet()) -> ok | ignore).
 inc_sent(?PUBLISH_PACKET(_QoS, <<"$SYS/", _/binary>>, _, _)) ->
     ignore;
 inc_sent(Packet) ->
@@ -453,4 +458,5 @@ reserved_idx('messages.dropped')             -> 49;
 reserved_idx('messages.expired')             -> 50;
 reserved_idx('messages.forward')             -> 51;
 reserved_idx('auth.mqtt.anonymous')          -> 52;
+reserved_idx('channel.gc.cnt')               -> 53;
 reserved_idx(_)                              -> undefined.