fix logger

apps/iot/src/iot_logger.erl

@@ -13,6 +13,7 @@
 
 %% API
 -export([start_link/1, start_link/2,  write/2]).
+-export([archive_file/1]).
 
 %% gen_server callbacks
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).
@@ -89,12 +90,7 @@ handle_cast({write, Data}, State = #state{file = {OldIoDevice, OldFilePath}, que
         true ->
             ok = file:close(OldIoDevice),
             %% 归档
-            erlang:spawn(fun() ->
+            erlang:spawn(fun() -> archive_file(OldFilePath) end),
-                %% 压缩文件
-                ok = erl_tar:create(OldFilePath ++ ".tar", [OldFilePath], [compressed]),
-                %% 删除原来的文件
-                ok = file:delete(OldFilePath)
-                         end),
 
             %% 开启新的文件
             NewFilePath = make_file(FileName, NDate),
@@ -189,4 +185,17 @@ maybe_new_file({Y, M, D}, {Y0, M0, D0}) ->
 %        {Date, _} = calendar:gregorian_seconds_to_datetime(Seconds - Day * 86400),
 %        FilePath = make_file(FileName, Date),
 %        filelib:is_file(FilePath) andalso file:delete(FilePath)
-%                  end, lists:seq(1, 10)).
+%                  end, lists:seq(1, 10)).
+
+
+-spec archive_file(FilePath :: string()) -> ok.
+archive_file(FilePath) when is_list(FilePath) ->
+    TarFile = FilePath ++ ".tar",
+    {ok, Tar} = erl_tar:open(TarFile, [write, compressed]),
+    BaseName = filename:basename(FilePath),
+    {ok, Data} = file:read_file(FilePath),
+
+    ok = erl_tar:add(Tar, Data, BaseName, []),
+    ok = erl_tar:close(Tar),
+    %% 删除原来的文件
+    ok = file:delete(FilePath).