Stefan Leonhartsberger created LOG4J2-1028:
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Summary: Incorrect Line Number in location information
Key: LOG4J2-1028
URL: https://issues.apache.org/jira/browse/LOG4J2-1028
Project: Log4j 2
Issue Type: Bug
Components: Core
Affects Versions: 2.3
Environment: Java 1.8.0_45 64-bit
Maven 3.3.1
Windows 7
basically any...
Reporter: Stefan Leonhartsberger
When enabling location information in Log4j2
The line numbers of the log records are incorrect
as they are only taking into account the first time in the stacktrace where the
class in question (FQCN) was called
This however may not be accurate as the class may call methods within itself
adding to the stacktrace - these are not considered when gathering location
information within Log4jLogEvent.
An example stacktrace:
{code}
stackTrace = {java.lang.StackTraceElement[18]@4612}
0 = {java.lang.StackTraceElement@4617}
"java.lang.Thread.getStackTrace(Thread.java:1552)"
1 = {java.lang.StackTraceElement@4618}
"org.apache.logging.log4j.core.impl.Log4jLogEvent.calcLocation(Log4jLogEvent.java:386)"
2 = {java.lang.StackTraceElement@4619}
"org.apache.logging.log4j.core.async.AsyncLogger.location(AsyncLogger.java:293)"
3 = {java.lang.StackTraceElement@4620}
"org.apache.logging.log4j.core.async.AsyncLogger.logMessage(AsyncLogger.java:252)"
4 = {java.lang.StackTraceElement@4621}
"org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:738)"
5 = {java.lang.StackTraceElement@4622}
"org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:708)"
6 = {java.lang.StackTraceElement@4623}
"com.test.logging.factory.Log4j2Factory$Log4J2CatsLogger.log(Log4j2Factory.java:106)"
7 = {java.lang.StackTraceElement@4624}
"com.test.agent.configuration.Configuration.setPttId(Configuration.java:1079)"
8 = {java.lang.StackTraceElement@4625}
"com.test.agent.configuration.Configuration.loadDefaultConfiguration(Configuration.java:323)"
9 = {java.lang.StackTraceElement@4614}
"com.test.agent.configuration.Configuration.<init>(Configuration.java:302)"
10 = {java.lang.StackTraceElement@4613}
"com.test.agent.configuration.ConfigurationParser.createConfig(ConfigurationParser.java:51)"
11 = {java.lang.StackTraceElement@4626}
"com.test.agent.AgentMain.initConfig(AgentMain.java:231)"
12 = {java.lang.StackTraceElement@4627}
"com.test.agent.AgentMain.init(AgentMain.java:204)"
13 = {java.lang.StackTraceElement@4628}
"com.c4i.test.agent.AgentBase.init(AgentBase.java:456)"
14 = {java.lang.StackTraceElement@4629}
"com.test.agent.AgentBase.createAgent(AgentBase.java:194)"
15 = {java.lang.StackTraceElement@4630}
"com.test.agent.AgentBase.agentmain(AgentBase.java:141)"
16 = {java.lang.StackTraceElement@4631}
"com.test.agent.AgentMain.main(AgentMain.java:109)"
17 = {java.lang.StackTraceElement@4632}
"com.test.agent.AgentMain.main(AgentMain.java:86)"
{code}
Expected Line Number: 1079
Received Line Number: 301
Reason is that the stack is iterated from the wrong direction - i=17. (starting
with i=0 would result in the correct behaviour.
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