Christian Kreibich 1bd658da8f Support for log filter policy hooks ... This adds a "policy" hook into the logging framework's streams and filters to replace the existing log filter predicates. The hook signature is as follows: hook(rec: any, id: Log::ID, filter: Log::Filter); The logging manager invokes hooks on each log record. Hooks can veto log records via a break, and modify them if necessary. Log filters inherit the stream-level hook, but can override or remove the hook as needed. The distribution's existing log streams now come with pre-defined hooks that users can add handlers to. Their name is standardized as "log_policy" by convention, with additional suffixes when a module provides multiple streams. The following adds a handler to the Conn module's default log policy hook: hook Conn::log_policy(rec: Conn::Info, id: Log::ID, filter: Log::Filter) { if ( some_veto_reason(rec) ) break; } By default, this handler will get invoked for any log filter associated with the Conn::LOG stream. The existing predicates are deprecated for removal in 4.1 but continue to work.		2020-09-30 12:32:45 -07:00
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catch-and-release.zeek	Support for log filter policy hooks	2020-09-30 12:32:45 -07:00