Issue #4519 has been updated by Ken Barber. Assignee deleted (Ken Barber)
---------------------------------------- Feature #4519: Facter should provide a convenient way to cache values https://projects.puppetlabs.com/issues/4519#change-62545 Author: Peter Meier Status: Accepted Priority: Normal Assignee: Category: library Target version: 2.0.0 Keywords: Branch: https://github.com/kbarber/facter/tree/ticket/4519-cache Affected Facter version: I think this have discussed already various times and it is even planned?!. But I couldn't find a logged ticket and as I stumpled over that problem once again I thought I might want to file a feature request: Facter should provide a way to: 1. cache facts with a certain timeout, so that the fact value gets cache for the defined time 1. provide a way to cache any kind of data for a certain amount of time Why? We might want to have facts that take some time to calculate, however that don't change much. Or there might be data required to calucate a certain fact which high resource intensive, but doesn't change often. So what I like to have is similar to the @confine@ a way to set @timeout@, so that if this is set to some seconds/minutes (?) the fact isn't calculated again until the timeout expired. For the second point I'd like to have a simple key value store with timeout capability built into facter, so I can cache output of commands, which can then be used amongst different facts. Example: xen management tools are getting slower the more VMs you start. Hence @xm list@ can get slower and slower and if you have various facts that are depending on the output of that command and you take the naive approach and call @xm list@ a couple of times, you slowdown facter and hence puppet runs enormously. If I have only one fact using the output it would be nice to let facter cache that fact. However, if I have multiple facts depending on the output of @xm list@ I might want to cache also the output of @xm list@ so that @xm list@ is called really only once per facter run. Currently you can do that with your own cache implementation hacked into facts, but I think it would be nicer if facter would provide a convenient way to cache things. -- You have received this notification because you have either subscribed to it, or are involved in it. To change your notification preferences, please click here: http://projects.puppetlabs.com/my/account -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/puppet-bugs?hl=en.
