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https://issues.apache.org/jira/browse/LOG4J2-2341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16797763#comment-16797763
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Ralph Goers commented on LOG4J2-2341:
-------------------------------------
I am looking at this some more and the way this is solved makes no sense to me.
If the problem is that RingBufferLogEvent and MutableLogEvent implement Message
then the test should have been against that instead of verifying that the event
is a Log4jLogEvent.
> JsonLayout not working with AsyncLoggerContextSelector in 2.11.0
> ----------------------------------------------------------------
>
> Key: LOG4J2-2341
> URL: https://issues.apache.org/jira/browse/LOG4J2-2341
> Project: Log4j 2
> Issue Type: Bug
> Affects Versions: 2.11.0
> Reporter: Fedor Morozov
> Assignee: Carter Kozak
> Priority: Major
> Fix For: 3.0.0, 2.11.1
>
>
> In version 2.11.0 appenders with JsonLayout don't output json when
> Log4jContextSelector is set to
> org.apache.logging.log4j.core.async.AsyncLoggerContextSelector.
> Here is a sample:
> {code:java}
> package ru.yandex.zen;
> import org.apache.log4j.Logger;
> public class LoggerSample {
> public static void main(String[] args) {
> Logger logger = Logger.getLogger("LoggerSample");
> logger.info("Message 1");
> logger.info("Message 2");
> }
> }
> {code}
> {code:java}
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration status="WARN">
> <Appenders>
> <RandomAccessFile name="RandomAccessFile" fileName="async.log"
> immediateFlush="false" append="false">
> <JsonLayout/>
> </RandomAccessFile>
> </Appenders>
> <Loggers>
> <Root level="info">
> <AppenderRef ref="RandomAccessFile"/>
> </Root>
> </Loggers>
> </Configuration>
> {code}
> Without AsyncLoggerContextSelector the log looks like this:
> {code:java}
> ""
> ""
> {code}
> Without AsyncLoggerContextSelector:
> {code:java}
> {
> "thread" : "main",
> "level" : "INFO",
> "loggerName" : "LoggerSample",
> "message" : "Message 1",
> "endOfBatch" : false,
> "loggerFqcn" : "org.apache.log4j.Category",
> "instant" : {
> "epochSecond" : 1527061940,
> "nanoOfSecond" : 637000000
> },
> "threadId" : 1,
> "threadPriority" : 5
> }
> {
> "thread" : "main",
> "level" : "INFO",
> "loggerName" : "LoggerSample",
> "message" : "Message 2",
> "endOfBatch" : false,
> "loggerFqcn" : "org.apache.log4j.Category",
> "instant" : {
> "epochSecond" : 1527061940,
> "nanoOfSecond" : 717000000
> },
> "threadId" : 1,
> "threadPriority" : 5
> }
> {code}
> In our main application Json logger outputs the provided message in quotes,
> not just an empty string. The problem doesn't appear when using asyncRoot or
> asyncLogger.
> My dependencies:
> {code:java}
> compile 'org.apache.logging.log4j:log4j-api:2.11.0'
> compile 'org.apache.logging.log4j:log4j-core:2.11.0'
> compile "org.apache.logging.log4j:log4j-1.2-api:2.11.0"
> compile "com.fasterxml.jackson.core:jackson-core:2.9.4"
> compile "com.fasterxml.jackson.core:jackson-databind:2.9.4"
> {code}
>
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