[LOG4J2-2341] JsonLayout not working with AsyncLoggerContextSelector in 2.11.0

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.11.0
• Fix Version/s: 2.11.1, 3.0.0
• Assignee: Carter Kozak
• Reporter: Fedor Morozov
• Created: 23/May/18 07:59
• Updated: 25/Mar/19 18:05
• Resolved: 03/Jul/18 19:31

Description

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:

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");
    }
}

<?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>

Without AsyncLoggerContextSelector the log looks like this:

""
""

Without AsyncLoggerContextSelector:

{
"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
}

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:

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"

 

Issue Links

• duplicates: LOG4J2-2312 Using async appender with json layout causes only the message to be written
• links to: GitHub Pull Request #263