diff options
Diffstat (limited to 'lib/kernel/doc/src')
| -rw-r--r-- | lib/kernel/doc/src/logger.xml | 20 | ||||
| -rw-r--r-- | lib/kernel/doc/src/logger_chapter.xml | 12 |
2 files changed, 30 insertions, 2 deletions
diff --git a/lib/kernel/doc/src/logger.xml b/lib/kernel/doc/src/logger.xml index aa6e17f27b..2bcf137299 100644 --- a/lib/kernel/doc/src/logger.xml +++ b/lib/kernel/doc/src/logger.xml @@ -1123,6 +1123,26 @@ logger:set_process_metadata(maps:merge(logger:get_process_metadata(), Meta)). </func> <func> + <name>HModule:filter_config(Config) -> FilteredConfig</name> + <fsummary>Remove internal data from configuration.</fsummary> + <type> + <v>Config = FilteredConfig = + <seealso marker="#type-handler_config">handler_config()</seealso></v> + </type> + <desc> + <p>This callback function is optional.</p> + <p>The function is called when one of the Logger API functions + for fetching the handler configuration is called, for + example + <seealso marker="#get_handler_config-1"> + <c>logger:get_handler_config/1</c></seealso>.</p> + <p>It allows the handler to remove internal data fields from + its configuration data before it is returned to the + caller.</p> + </desc> + </func> + + <func> <name>HModule:log(LogEvent, Config) -> void()</name> <fsummary>Log the given log event.</fsummary> <type> diff --git a/lib/kernel/doc/src/logger_chapter.xml b/lib/kernel/doc/src/logger_chapter.xml index 777c37058e..1870d2ab79 100644 --- a/lib/kernel/doc/src/logger_chapter.xml +++ b/lib/kernel/doc/src/logger_chapter.xml @@ -384,8 +384,8 @@ logger:debug(#{got => connection_request, id => Id, state => State}, <p>In addition to the mandatory callback function <c>log/2</c>, a handler module can export the optional callback - functions <c>adding_handler/1</c>, <c>changing_config/3</c> - and <c>removing_handler/1</c>. See + functions <c>adding_handler/1</c>, <c>changing_config/3</c>, + <c>filter_config/1</c>, and <c>removing_handler/1</c>. See section <seealso marker="logger#handler_callback_functions">Handler Callback Functions</seealso> in the logger(3) manual page for more information about these function.</p> @@ -1029,6 +1029,7 @@ ok</pre> <item><c>adding_handler(Config)</c></item> <item><c>removing_handler(Config)</c></item> <item><c>changing_config(SetOrUpdate, OldConfig, NewConfig)</c></item> + <item><c>filter_config(Config)</c></item> </list> <p>When a handler is added, by for example a call to <seealso marker="logger#add_handler-3"> @@ -1052,6 +1053,13 @@ ok</pre> calls <c>HModule:changing_config(SetOrUpdate, OldConfig, NewConfig)</c>. If this function returns <c>{ok,NewConfig1}</c>, Logger writes <c>NewConfig1</c> to the configuration database.</p> + <p>When <seealso marker="logger#get_config-0"> + <c>logger:get_config/0</c></seealso> or + <seealso marker="logger#get_handler_config-0"> + <c>logger:get_handler_config/0,1</c></seealso> is called, + Logger calls <c>HModule:filter_config(Config)</c>. This function + must return the handler configuration where internal data is + removed.</p> <p>A simple handler that prints to the terminal can be implemented as follows:</p> |