Merge pull request #120 from saltos/lager_backend_log_level

Fix lager file backend format and allow the user to set log level for the log file.

Author: slfritchie

src/basho_bench.erl

@@ -63,9 +63,9 @@ main(Args) ->
     application:set_env(lager,
                         handlers,
                         [{lager_console_backend, ConsoleLagerLevel},
-                         {lager_file_backend,
-                          [ {ErrorLog, error, 10485760, "$D0", 5},
-                            {ConsoleLog, debug, 10485760, "$D0", 5} ]} ]),
+                         {lager_file_backend, [{file, ErrorLog},   {level, error}, {size, 10485760}, {date, "$D0"}, {count, 5}]},
+                         {lager_file_backend, [{file, ConsoleLog}, {level, debug}, {size, 10485760}, {date, "$D0"}, {count, 5}]}
+                        ]),
     application:set_env(lager, crash_log, CrashLog),
     lager:start(),
 
@@ -76,6 +76,7 @@ main(Args) ->
     %% Log level can be overriden by the config files
     CustomLagerLevel = basho_bench_config:get(log_level),
     lager:set_loglevel(lager_console_backend, CustomLagerLevel),
+    lager:set_loglevel(lager_file_backend, ConsoleLog, CustomLagerLevel),
 
     %% Init code path
     add_code_paths(basho_bench_config:get(code_paths, [])),