change to json log

apps/dgiot/include/logger.hrl

@@ -44,7 +44,7 @@
 -define(LOG(Level, Format, Args),
         begin
           (logger:log(Level,#{},#{report_cb => fun(_) ->
-              {'$logger_header'() ++  "[~p:~p ~p] [~s:~p] " ++ (Format), ([?MODULE, ?FUNCTION_NAME, ?LINE, node(),self()] ++ Args)} end,
+              {'$logger_header'() ++ (Format), ( Args)} end,
                                   mfa => {?MODULE, ?FUNCTION_NAME, ?FUNCTION_ARITY},
                                   line => ?LINE}))
         end).

apps/dgiot/src/utils/dgiot_datetime.erl

@@ -18,6 +18,7 @@
 -module(dgiot_datetime).
 -author("johnliu").
 -include_lib("dgiot/include/logger.hrl").
+-logger_header("[dgiot]").
 
 -export([
     start_time/0,

apps/dgiot/src/utils/dgiot_license.erl

@@ -17,6 +17,7 @@
 -module(dgiot_license).
 -author("johnliu").
 -include_lib("dgiot/include/logger.hrl").
+-logger_header("[dgiot]").
 
 -export([init/1
     , description/0

etc/emqx.conf

@@ -448,7 +448,7 @@ log.file = emqx.log
 
 ## Log formatter
 ## Value: text | json
-#log.formatter = text
+log.formatter = json
 
 ## Log to single line
 ## Value: Boolean

priv/emqx.schema

@@ -502,7 +502,7 @@ end}.
 
 %% @doc format logs as JSON objects
 {mapping, "log.formatter", "kernel.logger", [
-  {default, text},
+  {default, json},
   {datatype, {enum, [text, json]}}
 ]}.