ngocnhan-tran1996 opened a new issue, #2666:
URL: https://github.com/apache/logging-log4j2/issues/2666
I have an application use log4j2 template layout with below config
File `EcsLayout.json`
```json
{
"message1": {
"$resolver": "pattern",
"pattern": "${env:TZ:-%d{yyyy-MM-dd HH:mm:ss.SSS}{UTC+07}}"
},
"message2": {
"$resolver": "pattern",
"pattern": "${env:TZ:-${TIMEZONE}}"
}
}
```
File `log4j2.xml`
```xml
<?xml version="1.0" encoding="UTF-8"?>
<Configuration name="Mask Library Test"
xmlns:xi="http://www.w3.org/2001/XInclude";>
<Properties>
<Property name="TIMEZONE">%d{yyyy-MM-dd HH:mm:ss.SSS}{UTC+07}</Property>
</Properties>
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout
disableAnsi="false"
pattern="%style{${TIMEZONE}}{black}
%highlight{%-5level}[%style{%t}{bright,blue}] %style{%c{1.}}{bright,yellow}:
%m%n%throwable" />
</Console>
<RollingFile name="RollingFile"
filePattern="logs/app-%d{yyyy-MM-dd-HH-mm}.log">
<JsonTemplateLayout eventTemplateUri="classpath:EcsLayout.json" />
<TimeBasedTriggeringPolicy />
</RollingFile>
</Appenders>
<Loggers>
<Root level="info">
<AppenderRef ref="Console" />
<AppenderRef ref="RollingFile" />
</Root>
</Loggers>
</Configuration>
```
And file log
```text
{"message1":"${env:TZ:-2024-06-14 15:00:33.561}","message2":"%d{yyyy-MM-dd
HH:mm:ss.SSS}{UTC+07}"}
```
**Expected**
**message1**
If `env:TZ` do not exist, it will be replace by `{yyyy-MM-dd
HH:mm:ss.SSS}{UTC+07}`
or
**message2**
log will be recorded date time instead `"%d{yyyy-MM-dd
HH:mm:ss.SSS}{UTC+07}"`
I have a small demo, just run and go to file
`logs/app-{yyyy-MM-dd-HH-mm}.log` and you will see result. Please tell me if I
miss something.
https://github.com/ngocnhan-tran1996/log4j2-demo
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