eLog/include/rumDef.hrl

%% 应用名字
-define(RumAppName, eRum).

%% 三元表达式
-define(IIF(Cond, Ret1, Ret2), (case Cond of true -> Ret1; _ -> Ret2 end)).

%% 错误日志宏定义
-define(ERR(Format), error_logger:error_msg(Format)).
-define(ERR(Format, Args), error_logger:error_msg(Format, Args)).

-define(Print(Args), io:format("IMY************~p~n", [Args])).

%% 额外进程字典key
-define(PdMdKey, pdRumMd).
-define(RumTrackSink, '__trace_sink').

%% 旋转日志超时时间
-define(ROTATE_TIMEOUT, 100000).

%% 部分默认配置值
-define(RumDefTruncation, 4096).
-define(RumDefTracer, lager_default_tracer).
-define(RumDefSink, rumEvent).
-define(RumErrLogSink, error_logger_lager_event).

%% rumBkdConsole的选项
-type rumConsoleOpt() ::
   {id, atom() | {atom(), atom()}} |
   {use_stderr, boolean()} |
   {group_leader, false | pid() | atom()} |
   {formatter, atom()} |
   {formatter_config, list()}.

%% rumBkdFile的选项
-type rumFileOpt() ::
   {file, binary()} |
   {level, rumAtomLevel() | atom()} |
   {size, non_neg_integer()} |
   {date, string()} |
   {count, non_neg_integer()} |
   {rotator, atom()} |
   {high_water_mark, non_neg_integer()} |
   {flush_queue, boolean()} |
   {flush_threshold, non_neg_integer()} |
   {sync_interval, non_neg_integer()} |
   {sync_size, non_neg_integer()} |
   {sync_on, rumAtomLevel()} |
   {check_interval, non_neg_integer()} |
   {formatter, atom()} |
   {formatter_config, term()}.

%% BkdFile选项默认值
-define(RumDefLogLevel, info).
-define(RumDefRotateSize, 10485760).      %% 10mb
-define(RumDefRotateDate, "$D0").         %% midnight
-define(RumDefRotateCnt, 5).
-define(RumDefRotateMod, rumRotatorIns).
-define(RumDefSyncLevel, error).
-define(RumDefSyncInterval, 1000).
-define(RumDefSyncSize, 1024 * 64).       %% 64kb
-define(RumDefCheckInterval, 1000).
-define(RumDefCheckHWM, 1000).               %% IMY-todo修正该默认值
-define(RumDefFlushQueue, true).
-define(RumDefFlushThreshold, 0).         %% IMY-todo修正该默认值
-define(RumDefFormatter, rumFormatter).
-define(RumDefFormatterCfg, []).

%% 默认日志文件选项
-define(RumDefHandler,
   [
      {rumBkdConsole, [{level, info}]},
      {rumBkdFile, [{file, <<"./log/error.log">>}, {level, '>=error'}, {size, 10485760}, {date, "$D0"}, {count, 5}]},
      {rumBkdFile, [{file, <<"./log/console.log">>}, {level, '>=debug'}, {size, 10485760}, {date, "$D0"}, {count, 5}]}
   ]).

-record(rumShaper, {
   id :: any()
   %% 每秒我们尝试传递多少消息
   , hwm = undefined :: 'undefined' | pos_integer()
   %% 这秒内我们收到了多少条消息
   , mps = 0 :: non_neg_integer()
   %% 当前秒
   , lastTime = rumTime:now() :: erlang:timestamp()
   %% 此秒内丢弃的消息数
   , dropped = 0 :: non_neg_integer()
   %% If true, flush notify messages from msg queue at overload
   %% 如果为true，则在过载时刷新来自消息队列的通知消息
   , flushQueue = true :: boolean()
   , flushThreshold = 0 :: integer()
   %% timer
   , timer = make_ref() :: reference()
   %% optional filter fun to avoid counting suppressed messages against HWM totals
   %% 可选的过滤器函数，以避免对HWM总数计算抑制消息
   , filter = fun(_) -> false end :: fun()
}).

-record(rumMsg, {
   destinations :: list(),
   metadata :: [tuple()],
   severity :: rumAtomLevel(),
   datetime :: binary(),
   timestamp :: non_neg_integer(),
   message :: list()
}).

-type rumShaper() :: #rumShaper{}.

-type rumAtomLevel() :: none | debug | info | notice | warning | error | critical | alert | emergency.
-type rumMaskLevel() :: 0..256.


%% 日志等级列表
-define(RumLevels, [debug, info, notice, warning, error, critical, alert, emergency, none]).

%% 使用这些“功能”意味着，出于安全考虑，参数列表不会被截断
-define(RumLevelsUnsafe, [{debug_unsafe, debug}, {info_unsafe, info}, {notice_unsafe, notice}, {warning_unsafe, warning}, {error_unsafe, error}, {critical_unsafe, critical}, {alert_unsafe, alert}, {emergency_unsafe, emergency}]).

%% 日志等级定义
-define(DEBUG, 128).
-define(INFO, 64).
-define(NOTICE, 32).
-define(WARNING, 16).
-define(ERROR, 8).
-define(CRITICAL, 4).
-define(ALERT, 2).
-define(EMERGENCY, 1).
-define(LOG_NONE, 0).

-define(RunShouldLog(Sink, Level), (rumUtil:levelToNum(Level) band element(1, rumConfig:get({Sink, loglevel}, {?LOG_NONE, []}))) /= 0).

-define(RunShouldLog(Level), (rumUtil:levelToNum(Level) band element(1, rumConfig:get(loglevel, {?LOG_NONE, []}))) /= 0).

-define(RunNotify(Level, Pid, Format, Args),
   gen_emm:info_notify(rumEvent, {mWriteLog, rumMsg:new(io_lib:format(Format, Args), Level, [{pid, Pid}, {line, ?LINE}, {file, ?FILE}, {module, ?MODULE}], [])})).

%%仅供内部使用仅内部非阻塞日志记录调用，当我们仍在启动大型啤酒时尝试进行日志记录（通常为错误）时，会有一些特殊处理。
-ifdef(TEST).
-define(INT_LOG(Level, Format, Args),
   case ?RunShouldLog(Level) of
      true ->
         ?RunNotify(Level, self(), Format, Args);
      _ ->
         ok
   end).
-else.
-define(INT_LOG(Level, Format, Args),
   Self = self(),
   %%在生成中执行此操作，这样就不会导致从gen_event处理程序调用gen_event：which_handlers的死锁
   spawn(fun() ->
      case catch (gen_event:which_handlers(rumEvent)) of
         X when X == []; X == {'EXIT', noproc}; X == [rumBkdThrottle] ->
            %% there's no handlers yet or lager isn't running, try again
            %% in half a second.
            timer:sleep(500),
            ?RunNotify(Level, Self, Format, Args);
         _ ->
            case ?RunShouldLog(Level) of
               true ->
                  ?RunNotify(Level, Self, Format, Args);
               _ ->
                  ok
            end
      end
         end)).
-endif.