[LOG4J2-2722] log4j2 config variableResolver Prefix and Suffix should configable

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.12.1
• Component/s: Configurators
• Assignee: Unassigned
• Reporter: qxo
• Created: 17/Nov/19 15:34
• Updated: 17/Nov/19 15:34

Description

current variableResolverPrefix=${ and variableResolverSuffix=}
There will be a issue if the variable default value has "}"
ie :
```
${env:logStdoutPattern:-%d

{yyyyMMddHH:mm:ss}

%-5p %c

{20}:%L - %m%n}
```
if we change the variableResolverPrefix, that will solve the problem
```log4j2.proprties
variableResolverPrefix=$(
variableResolverSuffix=)
appender.console.layout.pattern=$(env:logStdoutPattern:-%d{yyyyMMddHH:mm:ss} %-5p %c{20}

:%L - %m%n)
```
ref PR: https://github.com/apache/logging-log4j2/pull/312