SnobbyVirus1973 opened a new issue, #2766:
URL: https://github.com/apache/logging-log4j2/issues/2766
## Description
I want to use ConfigurationBuilder to config a NoSqlAppender, but I can`t
set additionalFields, My code is:
``` java
MongoDb4Provider mongoDb4Provider = MongoDb4Provider.newBuilder()
.setConnectionStringSource("mongodb://localhost:27017/log.test")
.build();
NoSqlAppender mongoDbAppenderBuilder = NoSqlAppender.newBuilder()
.setName("MongoDbAppender")
.setProvider(mongoDb4Provider)
.build()
```
I lookup the source code, and I find NoSqlAppender.Builder class has a
private field called "additionalFields", but is has not setter method;
So I use java reflect to set the value, My code is:
``` java
MongoDb4Provider mongoDb4Provider = MongoDb4Provider.newBuilder()
.setConnectionStringSource("mongodb://localhost:27017/log.test")
.build();
NoSqlAppender.Builder mongoDbAppenderBuilder = NoSqlAppender.newBuilder()
.setName("MongoDbAppender")
.setProvider(mongoDb4Provider)
.setConfiguration(config);
ReflectUtil.setFieldValue(mongoDbAppenderBuilder, "additionalFields", new
KeyValuePair[] {
KeyValuePair.newBuilder().setKey("some_key").setValue("${map:some_key}").build(),
});
NoSqlAppender mongoDbAppender = mongoDbAppenderBuilder.build();
```
It works. But Map Lookup doesn`t work, My do log code is:
``` java
logger.info(new MapMessage(Map.of("some_key", "some_value")));
```
I expect ${map:some_key} can be resolved to some_value, but I get
${map:some_key} in MongoDB`s field. I tried ${map:some_key} $${map:some_key}
%K{some_key} %map{some_key} %MAP{some_key} and none of them worked;
## Configuration
**Version:** 2.23.1
**Operating system:** Windows 11
**JDK:** JDK-17-oracle
Forgive my poor English, English is not my native language.
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