chore(prometheus): update prometheus conf root name

apps/emqx_prometheus/etc/emqx_prometheus.conf

@@ -1,7 +1,7 @@
 ##--------------------------------------------------------------------
 ## emqx_prometheus for EMQ X
 ##--------------------------------------------------------------------
-emqx_prometheus:{
+prometheus: {
     push_gateway_server: "http://127.0.0.1:9091"
     interval: "15s"
     enable: true

apps/emqx_prometheus/src/emqx_prometheus_api.erl

@@ -106,14 +106,14 @@ prometheus_api() ->
 %     {"/prometheus/stats", Metadata, stats}.
 
 prometheus(get, _Request) ->
-    Response = emqx_config:get_raw([<<"emqx_prometheus">>], #{}),
+    Response = emqx_config:get_raw([<<"prometheus">>], #{}),
     {200, Response};
 
 prometheus(put, Request) ->
     {ok, Body, _} = cowboy_req:read_body(Request),
     Params = emqx_json:decode(Body, [return_maps]),
     Enable = maps:get(<<"enable">>, Params),
-    ok = emqx_config:update([?APP], Params),
+    ok = emqx_config:update([prometheus], Params),
     enable_prometheus(Enable).
 
 % stats(_Bindings, Params) ->
@@ -128,11 +128,11 @@ prometheus(put, Request) ->
 
 enable_prometheus(true) ->
     ok = emqx_prometheus_sup:stop_child(?APP),
-    emqx_prometheus_sup:start_child(?APP, emqx_config:get([?APP], #{})),
+    emqx_prometheus_sup:start_child(?APP, emqx_config:get([prometheus], #{})),
     {200};
 enable_prometheus(false) ->
     _ = emqx_prometheus_sup:stop_child(?APP),
     {200}.
 
 get_raw(Key, Def) ->
-    emqx_config:get_raw([<<"emqx_prometheus">>] ++ [Key], Def).
+    emqx_config:get_raw([<<"prometheus">>] ++ [Key], Def).

apps/emqx_prometheus/src/emqx_prometheus_app.erl

@@ -34,9 +34,9 @@ stop(_State) ->
     ok.
 
 maybe_enable_prometheus() ->
-    case emqx_config:get([?APP, enable], false) of
+    case emqx_config:get([prometheus, enable], false) of
         true ->
-            emqx_prometheus_sup:start_child(?APP, emqx_config:get([?APP], #{}));
+            emqx_prometheus_sup:start_child(?APP, emqx_config:get([prometheus], #{}));
         false ->
             ok
     end.

apps/emqx_prometheus/src/emqx_prometheus_schema.erl

@@ -22,9 +22,9 @@
 -export([ structs/0
         , fields/1]).
 
-structs() -> ["emqx_prometheus"].
+structs() -> ["prometheus"].
 
-fields("emqx_prometheus") ->
+fields("prometheus") ->
     [ {push_gateway_server, emqx_schema:t(string())}
     , {interval, emqx_schema:t(emqx_schema:duration_ms(), undefined, "15s")}
     , {enable, emqx_schema:t(boolean(), undefined, false)}

extension_schemas.config

@@ -12,6 +12,6 @@
 , {"emqx_management", emqx_management_schema}
 , {"emqx_dashboard", emqx_dashboard_schema}
 , {"emqx_gateway", emqx_gateway_schema}
-, {"emqx_prometheus", emqx_prometheus_schema}
+, {"prometheus", emqx_prometheus_schema}
 , {"statsd", emqx_statsd_schema}
 ].