Add log JSON formatter

conf/logging_debug_json.conf

@@ -0,0 +1,41 @@
+[loggers]
+keys=root,boto,gunicorn.error,gunicorn.access
+
+[handlers]
+keys=console
+
+[formatters]
+keys=generic,json
+
+[logger_root]
+level=DEBUG
+handlers=console
+
+[logger_boto]
+level=INFO
+handlers=console
+qualname=boto
+
+[logger_gunicorn.access]
+handlers=console
+propagate=0
+qualname=gunicorn.access
+level=DEBUG
+
+[handler_console]
+class=StreamHandler
+formatter=json
+args=(sys.stdout, )
+
+[logger_gunicorn.error]
+level=ERROR
+handlers=console
+propagate=0
+qualname=gunicorn.error
+
+[formatter_generic]
+format=%(asctime)s [%(process)d] [%(levelname)s] [%(name)s] %(message)s
+class=logging.Formatter
+
+[formatter_json]
+class=loghandler.JsonFormatter