[jira] [Resolved] (LOG4J2-3358) 2.17.1: JsonLayout Context no longer working.

["Carter Kozak (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-3358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carter Kozak resolved LOG4J2-3358.
----------------------------------
    Resolution: Fixed

> 2.17.1: JsonLayout Context no longer working.
> ---------------------------------------------
>
>                 Key: LOG4J2-3358
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-3358
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Layouts
>    Affects Versions: 2.17.1
>            Reporter: Markus Duft
>            Assignee: Carter Kozak
>            Priority: Major
>
> We're creating a RollingFileAppender programmatically using a JsonLayout. This uses fields using ${ctx:...} expansion. This stopped working when upgrading from 2.17.0 to 2.17.1.
> The code is as follows:
> {code:java}
> /**
>      * Creates a rolling file appender that write audit entries to a programmatically readable JSON file.
>      */
>     private RollingFileAppender createJsonAppender(Path logDir) {
>         List<KeyValuePair> fields = new ArrayList<>();
>         fields.add(KeyValuePair.newBuilder().setKey("who").setValue("${ctx:WHO}").build());
>         fields.add(KeyValuePair.newBuilder().setKey("what").setValue("${ctx:WHAT}").build());
>         fields.add(KeyValuePair.newBuilder().setKey("method").setValue("${ctx:METHOD}").build());
>         fields.add(KeyValuePair.newBuilder().setKey("parameters").setValue("${ctx:PARAMETERS}").build());        
>         RollingFileAppender.Builder<?> builder = RollingFileAppender.newBuilder();
>         builder.setName("auditJsonLogger");
>         builder.withFileName(logDir.resolve(LOG_JSON_FILENAME).toString());
>         builder.withFilePattern(logDir.resolve(LOG_JSON_FILEPATTERN).toString());
>         builder.withPolicy(SizeBasedTriggeringPolicy.createPolicy("10M"));
>         builder.setLayout(JsonLayout.newBuilder().setCompact(true).setEventEol(true).setConfiguration(new DefaultConfiguration())
>                 .setAdditionalFields(fields.toArray(new KeyValuePair[0])).build());
>         builder.withStrategy(
>                 DefaultRolloverStrategy.newBuilder().withCompressionLevelStr(String.valueOf(Deflater.DEFAULT_COMPRESSION))
>                         .withMax(Integer.toString(LOG_MAX_INDEX)).withFileIndex("min").build());
>         return builder.build();
>     } {code}
> We also tried to use %X\{...} as well as $${ctx:...} expansions instead to no avail. The log file always contains the *literal* string we use in .setValue(), i.e. lines like this:
> {noformat}
> {"instant":{"epochSecond":1642756242,"nanoOfSecond":271091900},"thread":"hive/fsck","level":"INFO","message":"Execute","endOfBatch":false,"threadId":65,"threadPriority":5,"who":"${ctx:WHO}","what":"${ctx:WHAT}","method":"${ctx:METHOD}","parameters":"${ctx:PARAMETERS}"}{noformat}
> Reverting to 2.17.0 will correctly give lines like this in the JSON file:
> {noformat}
> {"instant":{"epochSecond":1642756430,"nanoOfSecond":923210700},"thread":"hive/fsck","level":"INFO","message":"Execute","endOfBatch":false,"threadId":62,"threadPriority":5,"who":"marku","what":"ObjectConsistencyCheckOperation","method":"-","parameters":"{dryRun=false, roots=[io.bdeploy/demo/client-app/linux:1.0.0, io.bdeploy/demo/client-app/linux:2.0.0, io.bdeploy/demo/client-app/windows:1.0.0, ...]}"}{noformat}



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