diff options
Diffstat (limited to 'lib/kernel/doc/src/logger_chapter.xml')
| -rw-r--r-- | lib/kernel/doc/src/logger_chapter.xml | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/lib/kernel/doc/src/logger_chapter.xml b/lib/kernel/doc/src/logger_chapter.xml index 1195808160..78c595d521 100644 --- a/lib/kernel/doc/src/logger_chapter.xml +++ b/lib/kernel/doc/src/logger_chapter.xml @@ -268,7 +268,7 @@ <p>In addition to the mandatory callback function <c>log/2</c>, a handler module can export the optional callback - functions <c>adding_handler/2</c>, <c>changing_config/3</c> + functions <c>adding_handler/1</c>, <c>changing_config/2</c> and <c>removing_handler/1</c>. See section <seealso marker="logger#handler_callback_functions">Handler Callback Functions</seealso> in the logger(3) manual for more @@ -738,22 +738,22 @@ ok</pre> <code>log(logger:log(),logger:config()) ->ok</code> <p>It may also implement the following callbacks:</p> <code> -adding_handler(logger:handler_id(),logger:config()) -> {ok,logger:config()} | {error,term()} -removing_handler(logger:handler_id(),logger:config()) -> ok -changing_config(logger:handler_id(),logger:config(),logger:config()) -> {ok,logger:config()} | {error,term()} +adding_handler(logger:config()) -> {ok,logger:config()} | {error,term()} +removing_handler(logger:config()) -> ok +changing_config(logger:config(),logger:config()) -> {ok,logger:config()} | {error,term()} </code> <p>When <c>logger:add_handler(Id,Module,Config)</c> is called, Logger - will first call <c>HModule:adding_handler(Id,Config)</c>, and if it + will first call <c>HModule:adding_handler(Config)</c>, and if it returns <c>{ok,NewConfig}</c>, <c>NewConfig</c> is written to the configuration database. After this, the handler may receive log events as calls to <c>HModule:log/2</c>.</p> <p>A handler can be removed by calling <c>logger:remove_handler(Id)</c>. Logger will call - <c>HModule:removing_handler(Id,Config)</c>, and then remove the + <c>HModule:removing_handler(Config)</c>, and then remove the handler's configuration from the configuration database.</p> <p>When <c>logger:set_handler_config/2,3</c> or <c>logger:update_handler_config/2</c> are called, Logger - calls <c>HModule:changing_config(Id,OldConfig,NewConfig)</c>. If + calls <c>HModule:changing_config(OldConfig,NewConfig)</c>. If this function returns <c>{ok,NewConfig}</c>, <c>NewConfig</c> is written to the configuration database.</p> @@ -771,14 +771,14 @@ log(Log,#{formatter:={FModule,FConfig}) -> this:</p> <code> -module(myhandler). --export([adding_handler/2, removing_handler/2, log/2]). +-export([adding_handler/1, removing_handler/1, log/2]). -export([init/1, handle_call/3, handle_cast/2, terminate/2]). -adding_handler(Id,Config) -> +adding_handler(Config) -> {ok,Fd} = file:open(File,[append,{encoding,utf8}]), {ok,Config#{myhandler_fd=>Fd}}. -removing_handler(Id,#{myhandler_fd:=Fd}) -> +removing_handler(#{myhandler_fd:=Fd}) -> _ = file:close(Fd), ok. @@ -800,14 +800,14 @@ log(Log,#{myhandler_fd:=Fd,formatter:={FModule,FConfig}}) -> single process.</p> <code> -module(myhandler). --export([adding_handler/2, removing_handler/2, log/2]). +-export([adding_handler/1, removing_handler/1, log/2]). -export([init/1, handle_call/3, handle_cast/2, terminate/2]). -adding_handler(Id,Config) -> +adding_handler(Config) -> {ok,Pid} = gen_server:start(?MODULE,Config), {ok,Config#{myhandler_pid=>Pid}}. -removing_handler(Id,#{myhandler_pid:=Pid}) -> +removing_handler(#{myhandler_pid:=Pid}) -> gen_server:stop(Pid). log(Log,#{myhandler_pid:=Pid} = Config) -> |