Processor Modules

Processor modules can be used to process log messages in the log message path between configured Input and Output modules.

We’re phasing out processor modules and replacing them with extensions or NXLog language features. We advise using the newer functionality whenever possible.

Blocker (pm_blocker) — Allows log processing to be paused and resumed
Buffer (pm_buffer) — Implements disk- and memory-based buffering for log data
Event Correlator (pm_evcorr) — Provides conditional execution based on correlation between events
HMAC Message Integrity (pm_hmac) — Adds a checksum to each event for later verification
HMAC Message Integrity Checker (pm_hmac_check) — Validates event checksums generated by pm_hmac
De-Duplicator (pm_norepeat) — Discards duplicate events and adds "last message repeated n times"
Null (pm_null) — Provides a dummy processor for testing, custom processing, or scheduled execution
Pattern Matcher (pm_pattern) — Performs efficient pattern matching with an XML pattern database file