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https://issues.apache.org/jira/browse/LOG4J2-1244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Gregory updated LOG4J2-1244:
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Attachment: logging-log4j2.patch
This patch gives you the full power of patterns for the header and footer of
any String-based Layout subclass, like the JSON Layout.
> Make header and footer values customizable in JSONLayout
> --------------------------------------------------------
>
> Key: LOG4J2-1244
> URL: https://issues.apache.org/jira/browse/LOG4J2-1244
> Project: Log4j 2
> Issue Type: Improvement
> Components: Layouts
> Reporter: Anshu Garg
> Assignee: Gary Gregory
> Attachments: logging-log4j2.patch
>
>
> It will be helpful to provide a way to customize header and footer in
> JSONLayout in Log4j 2.
> For instance user is writing a logging application which logs requests and
> responses to/from a server to log files in JSON format. Now user also wants
> to log server specific information in each log file but since it will be
> common for all request/response, it is not desired to be logged with each log
> entry so user wants to add server specific common information at start of the
> file. As header in JSON format or in this use case. This will be followed by
> each request and response logged as a JSON array element. And at rollover
> this JSON array and main JSON object (which contains header and JSON array)
> should be closed with help of footer.
> A typical file will be something like ...
> {"Header":{"ServerName":"MyAppServer"},"LogEntries":[{"Message":"Request
> message1","RequestingAddress":"127.0.0.1","TimeStamp":"2016-01-05_07-24-59"},
> {"Message":"Request
> message1","RequestingAddress":"127.0.0.1","TimeStamp":"2016-01-05_07-24-59"},
> {"Message":"Request
> message1","RequestingAddress":"127.0.0.1","TimeStamp":"2016-01-05_07-24-59"},
> {"LogEndMarker":"END"}]}
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