[logback-dev] [JIRA] (LOGBACK-328) XMLLayout has several inconsistencies as compared to the log4j XMLLayout it emulates.

Joern Huxhorn (JIRA) Fri, 25 Oct 2013 13:23:55 -0700

Joern Huxhorn commented on

XMLLayout has several inconsistencies as compared to the log4j XMLLayout it emulates.

There are even more differences regarding suppressed exceptions.

Below are some example outputs showing off the differences between log4j 1.2.17 and logback 1.0.13. The code producing these is conceptually identical but the <log4j:throwable> content is way different.

log4j-1.2.17

<log4j:event logger="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" timestamp="1382730402315" level="DEBUG" thread="main">
<log4j:message><![CDATA[Just an exception!]]></log4j:message>
<log4j:NDC><![CDATA[NDC1 NDC2 NDC with spaces...]]></log4j:NDC>
<log4j:throwable><![CDATA[java.lang.RuntimeException: Hi.
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:58)
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.execute(Log4jSandbox.java:16)
	at de.huxhorn.lilith.sandbox.Log4jSandbox.main(Log4jSandbox.java:80)
	Suppressed: java.lang.RuntimeException
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:59)
		... 2 more
	Suppressed: java.lang.RuntimeException: Single line
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:60)
		... 2 more
	Suppressed: java.lang.RuntimeException: Multi
line
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:61)
		... 2 more
]]></log4j:throwable>
<log4j:locationInfo class="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" method="execute" file="Log4jSandbox.java" line="20"/>
<log4j:properties>
<log4j:data name="key1" value="value1"/>
<log4j:data name="key2" value="value2"/>
</log4j:properties>
</log4j:event>


<log4j:event logger="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" timestamp="1382730402316" level="DEBUG" thread="main">
<log4j:message><![CDATA[Exception with simple message!]]></log4j:message>
<log4j:NDC><![CDATA[NDC1 NDC2 NDC with spaces...]]></log4j:NDC>
<log4j:throwable><![CDATA[java.lang.RuntimeException: Hello
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.execute(Log4jSandbox.java:29)
	at de.huxhorn.lilith.sandbox.Log4jSandbox.main(Log4jSandbox.java:80)
Caused by: java.lang.RuntimeException: Hi.
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:58)
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.execute(Log4jSandbox.java:25)
	... 1 more
	Suppressed: java.lang.RuntimeException
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:59)
		... 2 more
	Suppressed: java.lang.RuntimeException: Single line
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:60)
		... 2 more
	Suppressed: java.lang.RuntimeException: Multi
line
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:61)
		... 2 more
]]></log4j:throwable>
<log4j:locationInfo class="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" method="execute" file="Log4jSandbox.java" line="30"/>
<log4j:properties>
<log4j:data name="key1" value="value1"/>
<log4j:data name="key2" value="value2"/>
</log4j:properties>
</log4j:event>

<log4j:event logger="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" timestamp="1382730402318" level="DEBUG" thread="main">
<log4j:message><![CDATA[Exception with multiline message!]]></log4j:message>
<log4j:NDC><![CDATA[NDC1 NDC2 NDC with spaces...]]></log4j:NDC>
<log4j:throwable><![CDATA[java.lang.RuntimeException: Multi
line
message
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.execute(Log4jSandbox.java:39)
	at de.huxhorn.lilith.sandbox.Log4jSandbox.main(Log4jSandbox.java:80)
Caused by: java.lang.RuntimeException: Hi.
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:58)
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.execute(Log4jSandbox.java:35)
	... 1 more
	Suppressed: java.lang.RuntimeException
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:59)
		... 2 more
	Suppressed: java.lang.RuntimeException: Single line
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:60)
		... 2 more
	Suppressed: java.lang.RuntimeException: Multi
line
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:61)
		... 2 more
]]></log4j:throwable>
<log4j:locationInfo class="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" method="execute" file="Log4jSandbox.java" line="40"/>
<log4j:properties>
<log4j:data name="key1" value="value1"/>
<log4j:data name="key2" value="value2"/>
</log4j:properties>
</log4j:event>

<log4j:event logger="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" timestamp="1382730402320" level="DEBUG" thread="main">
<log4j:message><![CDATA[Exception with no message!]]></log4j:message>
<log4j:NDC><![CDATA[NDC1 NDC2 NDC with spaces...]]></log4j:NDC>
<log4j:throwable><![CDATA[java.lang.RuntimeException: java.lang.RuntimeException: Hi.
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.execute(Log4jSandbox.java:49)
	at de.huxhorn.lilith.sandbox.Log4jSandbox.main(Log4jSandbox.java:80)
Caused by: java.lang.RuntimeException: Hi.
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:58)
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.execute(Log4jSandbox.java:45)
	... 1 more
	Suppressed: java.lang.RuntimeException
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:59)
		... 2 more
	Suppressed: java.lang.RuntimeException: Single line
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:60)
		... 2 more
	Suppressed: java.lang.RuntimeException: Multi
line
		at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.foobar(Log4jSandbox.java:61)
		... 2 more
]]></log4j:throwable>
<log4j:locationInfo class="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" method="execute" file="Log4jSandbox.java" line="50"/>
<log4j:properties>
<log4j:data name="key1" value="value1"/>
<log4j:data name="key2" value="value2"/>
</log4j:properties>
</log4j:event>

<log4j:event logger="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" timestamp="1382730402323" level="DEBUG" thread="main">
<log4j:message><![CDATA[Plain exception!]]></log4j:message>
<log4j:NDC><![CDATA[NDC1 NDC2 NDC with spaces...]]></log4j:NDC>
<log4j:throwable><![CDATA[java.lang.RuntimeException
	at de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass.execute(Log4jSandbox.java:53)
	at de.huxhorn.lilith.sandbox.Log4jSandbox.main(Log4jSandbox.java:80)
]]></log4j:throwable>
<log4j:locationInfo class="de.huxhorn.lilith.sandbox.Log4jSandbox$InnerClass" method="execute" file="Log4jSandbox.java" line="53"/>
<log4j:properties>
<log4j:data name="key1" value="value1"/>
<log4j:data name="key2" value="value2"/>
</log4j:properties>
</log4j:event>

logback-1.0.13

<log4j:event logger="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
             timestamp="1382730614293" level="DEBUG" thread="main">
  <log4j:message><![CDATA[Just an exception!]]></log4j:message>
  <log4j:throwable><![CDATA[	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass.foobar(LogbackClassicSandbox.java:60)
	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass.execute(LogbackClassicSandbox.java:18)
	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox.main(LogbackClassicSandbox.java:82)
]]></log4j:throwable>
  <log4j:locationInfo class="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
                      method="execute" file="LogbackClassicSandbox.java" line="22"/>

</log4j:event>

<log4j:event logger="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
             timestamp="1382730614298" level="DEBUG" thread="main">
  <log4j:message><![CDATA[Exception with simple message!]]></log4j:message>
  <log4j:throwable><![CDATA[	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass.execute(LogbackClassicSandbox.java:31)
	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox.main(LogbackClassicSandbox.java:82)
]]></log4j:throwable>
  <log4j:locationInfo class="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
                      method="execute" file="LogbackClassicSandbox.java" line="32"/>

</log4j:event>

<log4j:event logger="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
             timestamp="1382730614307" level="DEBUG" thread="main">
  <log4j:message><![CDATA[Exception with multiline message!]]></log4j:message>
  <log4j:throwable><![CDATA[	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass.execute(LogbackClassicSandbox.java:41)
	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox.main(LogbackClassicSandbox.java:82)
]]></log4j:throwable>
  <log4j:locationInfo class="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
                      method="execute" file="LogbackClassicSandbox.java" line="42"/>

</log4j:event>

<log4j:event logger="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
             timestamp="1382730614316" level="DEBUG" thread="main">
  <log4j:message><![CDATA[Exception with no message!]]></log4j:message>
  <log4j:throwable><![CDATA[	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass.execute(LogbackClassicSandbox.java:51)
	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox.main(LogbackClassicSandbox.java:82)
]]></log4j:throwable>
  <log4j:locationInfo class="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
                      method="execute" file="LogbackClassicSandbox.java" line="52"/>

</log4j:event>

<log4j:event logger="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
             timestamp="1382730614323" level="DEBUG" thread="main">
  <log4j:message><![CDATA[Plain exception!]]></log4j:message>
  <log4j:throwable><![CDATA[	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass.execute(LogbackClassicSandbox.java:55)
	at de.huxhorn.lilith.sandbox.LogbackClassicSandbox.main(LogbackClassicSandbox.java:82)
]]></log4j:throwable>
  <log4j:locationInfo class="de.huxhorn.lilith.sandbox.LogbackClassicSandbox$InnerClass"
                      method="execute" file="LogbackClassicSandbox.java" line="55"/>

</log4j:event>

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[logback-dev] [JIRA] (LOGBACK-328) XMLLayout has several inconsistencies as compared to the log4j XMLLayout it emulates.

log4j-1.2.17

logback-1.0.13

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