[jira] [Commented] (LOG4J2-2873) Failed to parse json string to LogEvent when massage type is MapMessage

["Ralph Goers (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4J2-2873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17140730#comment-17140730 ] 

Ralph Goers commented on LOG4J2-2873:
-------------------------------------

How is the server going to know that the event contains a MapMessage since it was serialized to a String?

> Failed to parse json string to LogEvent when massage type is MapMessage
> -----------------------------------------------------------------------
>
>                 Key: LOG4J2-2873
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-2873
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.13.2, 2.13.3
>            Reporter: Alla Gofman
>            Priority: Major
>         Attachments: alert.json
>
>
> I create LogEvent where message is of type MapMessage (key-value pairs).
> I send this log event to SocketAppender by JsonLayout.
> The json created in attached file.
> I tried also setObjectMessageAsJsonObject(true) - same result.
> On ServerSocket side I want to parse/deserialize this json string to  LogEvent and log it to File Appender:
> {quote}{{PatternLayout. JSONObject jobj = new JSONObject(line);}}
>  {{LogEvent logEvent = new JsonLogEventParser().parseFrom(line);}}
> {quote}
>  
> Then parseFrom() build the LogEvent, message object create of type SimpleMessage and not MapMessage. Then it comes to resolving *%map* pattern in MapPatternConverter.format() - do nothing and return.
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