ramanathan1504 opened a new pull request, #3874:
URL: https://github.com/apache/logging-log4j2/pull/3874
This pull request introduces support for a new `jvmrunargs` lookup in Log4j,
allowing users to access JVM runtime arguments via configuration and lookups.
The changes include registering the new lookup in the `Interpolator`, adding
tests to verify its registration and behavior, and providing a sample
configuration file that demonstrates its usage.
**New JVM Runtime Arguments Lookup:**
- Registered the `jvmrunargs` lookup in the `Interpolator` class, enabling
retrieval of JVM arguments through `${jvmrunargs:...}` expressions in Log4j
configurations.
**Testing and Verification:**
- Added `JvmRunArgsLookupTest` to verify that the `jvmrunargs` lookup is
registered and behaves as expected, including null and non-null cases.
- Introduced `JvmRunArgsIntegrationTest` to ensure the lookup works
correctly within a logging configuration.
**Configuration Example:**
- Added a sample `log4j2-test.xml` configuration file that demonstrates how
to use the new `jvmrunargs` lookup in a pattern layout for console output.
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