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From "Zilong Song (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LOG4J2-1838) Add support for appending common suffix to each line of throwable stack trace
Date Sun, 05 Mar 2017 18:07:32 GMT

     [ https://issues.apache.org/jira/browse/LOG4J2-1838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zilong Song updated LOG4J2-1838:
--------------------------------
    Description: 
Add support for appending common suffix to each line of throwable stack trace. The suffix
can be configured by patterns just like patterns used elsewhere. 

For example, pattern {{%xEx\{suffix(- %mdc\{key\})\}}} will append a string generated by pattern
{{- }} and pattern {{%mdc\{key\} }}.

But throwable patterns will be automatically ignored, because they will make the rendered
result confusing. So pattern {{%xEx\{suffix(- %rEx%mdc\{key\})\}}} has the same effect with
{{%xEx\{suffix(- %mdc\{key\})\}}}, as if the nested {{%rEx}} pattern has never appeared.

With the common suffix, the stack trace is as following: (with pattern {{suffix(- %mdc\{key\})}},
and MDC value {{test mdc suffix}} to {{key}})

{code:title=stack trace|borderStyle=solid}
java.lang.IllegalArgumentException: IllegalArgument - test mdc suffix
	at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverterTest.testSuffixFromNormalPattern(ExtendedThrowablePatternConverterTest.java:48)
[test-classes/:?] - test mdc suffix
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91] - test mdc suffix
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:1.8.0_91] - test mdc suffix
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91] - test mdc suffix
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) [idea_rt.jar:?] -
test mdc suffix
Caused by: java.lang.NullPointerException: null pointer - test mdc suffix
	at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverterTest.testSuffixFromNormalPattern(ExtendedThrowablePatternConverterTest.java:47)
~[test-classes/:?] - test mdc suffix
	... 27 more - test mdc suffix
}}
{code}

  was:
Add support for appending common suffix to each line of throwable stack trace. The suffix
can be configured by patterns just like patterns used elsewhere. 

For example, pattern {{%xEx\{suffix(- %mdc\{key\})\}}} will append a string generated by pattern
{{- }} and pattern {{%mdc\{key\} }}.

But throwable patterns will be automatically ignored, because they will make the rendered
result confusing. So pattern {{%xEx\{suffix(- %rEx%mdc\{key\})\}}} has the same effect with
{{%xEx\{suffix(- %mdc\{key\})\}}}, as if the nested {{%rEx}} has never appeared.

With the common suffix, the stack trace is as following: (with pattern {{suffix(- %mdc\{key\})}},
and MDC value {{test mdc suffix}} to {{key}})

{code:title=stack trace|borderStyle=solid}
java.lang.IllegalArgumentException: IllegalArgument - test mdc suffix
	at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverterTest.testSuffixFromNormalPattern(ExtendedThrowablePatternConverterTest.java:48)
[test-classes/:?] - test mdc suffix
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91] - test mdc suffix
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:1.8.0_91] - test mdc suffix
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91] - test mdc suffix
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) [idea_rt.jar:?] -
test mdc suffix
Caused by: java.lang.NullPointerException: null pointer - test mdc suffix
	at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverterTest.testSuffixFromNormalPattern(ExtendedThrowablePatternConverterTest.java:47)
~[test-classes/:?] - test mdc suffix
	... 27 more - test mdc suffix
}}
{code}


> Add support for appending common suffix to each line of throwable stack trace
> -----------------------------------------------------------------------------
>
>                 Key: LOG4J2-1838
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1838
>             Project: Log4j 2
>          Issue Type: New Feature
>          Components: Pattern Converters
>    Affects Versions: 2.8.1
>            Reporter: Zilong Song
>              Labels: features
>             Fix For: 2.8.2
>
>
> Add support for appending common suffix to each line of throwable stack trace. The suffix
can be configured by patterns just like patterns used elsewhere. 
> For example, pattern {{%xEx\{suffix(- %mdc\{key\})\}}} will append a string generated
by pattern {{- }} and pattern {{%mdc\{key\} }}.
> But throwable patterns will be automatically ignored, because they will make the rendered
result confusing. So pattern {{%xEx\{suffix(- %rEx%mdc\{key\})\}}} has the same effect with
{{%xEx\{suffix(- %mdc\{key\})\}}}, as if the nested {{%rEx}} pattern has never appeared.
> With the common suffix, the stack trace is as following: (with pattern {{suffix(- %mdc\{key\})}},
and MDC value {{test mdc suffix}} to {{key}})
> {code:title=stack trace|borderStyle=solid}
> java.lang.IllegalArgumentException: IllegalArgument - test mdc suffix
> 	at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverterTest.testSuffixFromNormalPattern(ExtendedThrowablePatternConverterTest.java:48)
[test-classes/:?] - test mdc suffix
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_91] - test
mdc suffix
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:1.8.0_91] - test mdc suffix
> 	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91] - test mdc suffix
> 	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) [idea_rt.jar:?]
- test mdc suffix
> Caused by: java.lang.NullPointerException: null pointer - test mdc suffix
> 	at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverterTest.testSuffixFromNormalPattern(ExtendedThrowablePatternConverterTest.java:47)
~[test-classes/:?] - test mdc suffix
> 	... 27 more - test mdc suffix
> }}
> {code}



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