Deterministic UUID option for PatternLayout #3532
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ppkarwasz
requested changes
Mar 14, 2025
log4j-core/src/main/java/org/apache/logging/log4j/core/util/UuidUtil.java
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log4j-core/src/main/java/org/apache/logging/log4j/core/util/UuidUtil.java
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log4j-core/src/main/java/org/apache/logging/log4j/core/util/UuidUtil.java
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Thanks for your feedback, @ppkarwasz. I was originally using a SecureRandom to comply with the UUID guidelines for using crypto-secure RNG, but I've experimented and decided to switch to a straightforward murmurhash of the LogEvent fields instead. It's also formatted as a UUID v8 now. |
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Draft implementation of a deterministic UUID generator based on a LogEvent hash. Would enable Appenders to produce repeatable UUIDs for the same LogEvent and correlate log outputs.
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