SWEET!
thanks Ceki. My guess is other people will want to do the same thing. bellow is
my working code.
background. I have a CLI java application. I want to generate all output using
logger instead of System.out or System.error. I want logger.info() to be un
decorated. All other levels of logging should level, class and line #
Thanks
Andy
public class DebugConverter extends CompositeConverter<ILoggingEvent> {
public DebugConverter() {
// TODO Auto-generated constructor stub
}
@Override
protected String transform(ILoggingEvent event, String in) {
if (Level.INFO == event.getLevel()) {
return "";
}
StringBuilder sb = new StringBuilder();
sb.append(in);
String ret = sb.toString();
return ret;
}
}
<configuration>
<conversionRule conversionWord="AST_DEBUG"
converterClass="com.apple.ast.logging.converter.DebugConverter" />
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%AST_DEBUG(%-5level [%class{16}] [line:%L]) %m%n</pattern>
</encoder>
</appender>
<root level="DEBUG">
<appender-ref ref="STDOUT" />
</root>
</configuration>
@Test
public void testLogger() {
logger.debug("debug {}", "testLogger");
logger.info("info {}", "testLogger");
logger.warn("warn {}", "testLogger");
logger.error("error {}", "testLogger");
}
generates following output
DEBUG [c.a.a.CustomDelimitedFileSourceTest] [line:120] debug testLogger
info testLogger
WARN [c.a.a.CustomDelimitedFileSourceTest] [line:122] warn testLogger
ERROR [c.a.a.CustomDelimitedFileSourceTest] [line:123] error testLogger
> On Apr 15, 2015, at 3:23 AM, Ceki Gülcü <[email protected]> wrote:
>
> Hi Andy,
>
> When you write "%a(%x %y)" then %x and %y are child converters for %a. So, in
> the case of "%debug(%level %d %t)", the converters %level,%d and %t are
> children of %debug. %debug is said to be a composite converter and the
> parenthesis () is sort of a composition operator.
>
> For your particular case, you need to sub-class CompositeConverter. See the
> implementation for HighlightingCompositeConverter (and
> ForegroundCompositeConverterBase). Look at the code for CompositeConverter ND
> notice how the convert() method of CompositeConverter delegates to child
> converters and only at the end transforms the results.
>
> I hope this helps,
>
> --
> Ceki
>
> On 4/15/2015 3:12, Andrew E. Davidson wrote:
>> Hi Ceki
>>
>>
>>>
>>> Alternatively, you could write a custom conversion specifier. If you
>>> had a specifier called %debug which output contents only for level
>>> DEBUG, and a %warn specifier which output contents only for level WARN
>>> and another specifier %ERROR which output contents for ERROR, your
>>> pattern could be written as
>>>
>>> %debug(%level %d %t) %error(%level) %info(%level) %m%n
>>>
>>> See http://logback.qos.ch/manual/layouts.html#customConversionSpecifier
>>> for documentation on this topic.
>>>
>>
>> I tried your “custom conversion specifier” approach. I think I am
>> missing something. In your logback.xml it looks like you are able to
>> pass arguments. I used a debugger how ever it did not appear like the
>> the ILoggingEvent had anything particularly useful other then the level
>> and thread Name values. List<String> optionList= getOptionList(); gives
>> me [%level %d %t] how ever the values have not been expanded
>>
>> Your solution is very close to what I want to do.
>>
>> Thanks in advance
>>
>> Andy
>>
>> public class DebugConverter extends ClassicConverter {
>> public DebugConverter() {
>> // TODO Auto-generated constructor stub
>> }
>>
>> @Override
>> public String convert(ILoggingEvent event) {
>> List<String> optionList = getOptionList();
>> Levellevel=event.getLevel();
>> System.err.println("convert() level:" + level);
>> return"DebugConverter.convert()";
>> }
>> }
>>
>> <configuration>
>> <conversionRuleconversionWord="AST_DEBUG"
>> converterClass="com.apple.ast.logging.converter.DebugConverter"/>
>>
>>
>> <appendername="STDOUT"class="ch.qos.logback.core.ConsoleAppender">
>> <encoder>
>> <!--
>> <pattern>%-5level %date{HH:mm:ss,SSS} [%thread]
>> [%class{16}] [line:%L] %msg%n</pattern>
>> -->
>> <pattern>%AST_DEBUG{%level %d %t} %m%n</pattern>
>> </encoder>
>> </appender>
>>
>> <rootlevel="DEBUG">
>> <appender-refref="STDOUT"/>
>> </root>
>> </configuration>
> _______________________________________________
> Logback-user mailing list
> [email protected]
> http://mailman.qos.ch/mailman/listinfo/logback-user
_______________________________________________
Logback-user mailing list
[email protected]
http://mailman.qos.ch/mailman/listinfo/logback-user
