From d854120023ec58722339bf0ca2628c80e82979cd Mon Sep 17 00:00:00 2001
From: Shawn <506895667@qq.com>
Date: Fri, 28 Dec 2018 16:37:01 +0800
Subject: [PATCH] Show plugin name if cannot start it (#2111)

---
 src/emqx_plugins.erl | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/emqx_plugins.erl b/src/emqx_plugins.erl
index b0f6456dc..479c36a89 100644
--- a/src/emqx_plugins.erl
+++ b/src/emqx_plugins.erl
@@ -170,10 +170,13 @@ list() ->
 
 plugin(CfgFile) ->
     AppName = app_name(CfgFile),
-    {ok, Attrs} = application:get_all_key(AppName),
-    Ver = proplists:get_value(vsn, Attrs, "0"),
-    Descr = proplists:get_value(description, Attrs, ""),
-    #plugin{name = AppName, version = Ver, descr = Descr}.
+    case application:get_all_key(AppName) of
+        {ok, Attrs} ->
+            Ver = proplists:get_value(vsn, Attrs, "0"),
+            Descr = proplists:get_value(description, Attrs, ""),
+            #plugin{name = AppName, version = Ver, descr = Descr};
+        undefined -> error({plugin_not_found, AppName})
+    end.
 
 %% @doc Load a Plugin
 -spec(load(atom()) -> ok | {error, term()}).