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<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE erlref SYSTEM "erlref.dtd">
<erlref>
<header>
<copyright>
<year>2017</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
</legalnotice>
<title>logger_std_h</title>
<prepared></prepared>
<responsible></responsible>
<docno></docno>
<approved></approved>
<checked></checked>
<date></date>
<rev>A</rev>
<file>logger_std_h.xml</file>
</header>
<module>logger_std_h</module>
<modulesummary>Default handler for the Logger application.</modulesummary>
<description>
<p>This is the default handler for the Logger
application. Multiple instances of this handler can be added to
logger, and each instance will print logs to <c>standard_io</c>,
<c>standard_error</c> or to a file.</p>
<p>To add a new instance,
use <seealso marker="logger#add_handler-3"><c>logger:add_handler/3</c>
</seealso>.</p>
<p>The handler configuration may contain the following keys,
associated with values as described:</p>
<taglist>
<tag><c>filters</c></tag>
<item>
<p>A list of <c>{Id,{Fun,Args}}</c>, each representing a filter
that may selct or modify log events to forward to this
handler.</p></item>
<tag><c>filter_default</c></tag>
<item>
<p>The atom <c>log</c> or <c>stop</c>, specifying what to
do with a log event if all filters
return <c>ignore</c>.</p></item>
<tag><c>formatter</c></tag>
<item>
<p><c>{Module,Extra}</c>,
where <c>Module:format(Log,Extra)</c> will be called by
the handler to produce the string that will be printed to
the handler's destination.</p></item>
<tag><c>level</c></tag>
<item>
<p>The level of log events that <c>logger</c> shall forward to
this handler. Log events of the specified, or more severe
levels, are forwarded.</p></item>
</taglist>
</description>
<!-- <funcs>
</funcs> -->
</erlref>
|
