Add log JSON formatter

conf/logging.conf

@@ -1,11 +1,11 @@
 [loggers]
-keys=root
+keys=root,gunicorn.error,gunicorn.access
 
 [handlers]
 keys=console
 
 [formatters]
-keys=generic
+keys=generic,json
 
 [logger_root]
 level=INFO
@@ -19,3 +19,18 @@ args=(sys.stdout, )
 [formatter_generic]
 format=%(asctime)s [%(process)d] [%(levelname)s] [%(name)s] %(message)s
 class=logging.Formatter
+
+[formatter_json]
+class=loghandler.JsonFormatter
+
+[logger_gunicorn.error]
+level=ERROR
+handlers=console
+propagate=0
+qualname=gunicorn.error
+
+[logger_gunicorn.access]
+handlers=console
+propagate=0
+qualname=gunicorn.access
+level=DEBUG