The definitive reference is https://www.rsyslog.com/doc/v8-stable/concepts/queues.html <https://www.rsyslog.com/doc/v8-stable/concepts/queues.html>
In scenario one you do not need a queue on ruleset rs1 as there are no outputs which would require one. Also, although the maintainers will need to say for sure, user variable defined in a call may not be visible to the parent. Same as in most programming languages. Regards, > On Sep 16, 2021, at 08:21, rajeshksv via rsyslog <[email protected]> > wrote: > > Hi Rsyslog Users, > > I am trying to understand how queues work in Rsyslog. In case of non-direct > queues, message is copied and placed in the queue and message modifications > done by queue workers won't have any impact on the original message. Makes > sense here. > > However, I am a little confused when it comes to direct Queue. What > happens in Direct Queue ? Will the message be copied or is it the same > message ? I tested out two scenarios (wrt rulesets and actions) and both > of them gave different results. > > When ruleset is backed by a direct Queue, message modifications done in > ruleset don't reflect back in original flow where as in case of actions > (such mmnormalize, mmkubernetes) which are by default backed by direct > Queue, message modifications done with action reflects in original flow > > Scenario 1: > > template(name="abc" type="string" string="%$!var1% %$.var2% %msg%") > > ruleset(name="relay.htp1" queue.type="Direct") { > call rs1 > * // $!var1, $.var2 aren't available here* > action(type="omfile" file="/tmp/output.log" template="abc") > call relay.htp > } > > ruleset(name="rs1" queue.type="Direct"){ > set $!var1 = "hello"; > set $.var2 = "bye"; > } > > input(type="imfile" > File="/tmp/input.log" > Ruleset="relay.htp1" > Tag="tag") > > > Scenario 2: > > module(load = "mmnormalize") > ruleset(name = "relay.htp1" queue.type="Direct") { > action(type = "mmnormalize" ruleBase="/etc/rsyslog.d/service.rulebase" > path="$!msg") > * // $!msg will be available here even though action is backed by a > default Queue. * > } > > input(type="imfile" > File="/tmp/input.log" > Ruleset="relay.htp1" > Tag="tag") > > > How come $!var1, $.var2 aren't available in scenario1 whereas $!msg is > available when both are using Direct Queue. Am I missing something here ? > > -- > Regards, > Rajesh KSV > _______________________________________________ > rsyslog mailing list > https://lists.adiscon.net/mailman/listinfo/rsyslog > http://www.rsyslog.com/professional-services/ > What's up with rsyslog? Follow https://twitter.com/rgerhards > NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of > sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T > LIKE THAT. _______________________________________________ rsyslog mailing list https://lists.adiscon.net/mailman/listinfo/rsyslog http://www.rsyslog.com/professional-services/ What's up with rsyslog? Follow https://twitter.com/rgerhards NOTE WELL: This is a PUBLIC mailing list, posts are ARCHIVED by a myriad of sites beyond our control. PLEASE UNSUBSCRIBE and DO NOT POST if you DON'T LIKE THAT.
