Forum: CFEngine Help Subject: Accessing package manager cache for other purposes? Author: sauer Link to topic: https://cfengine.com/forum/read.php?3,23088,23088#msg-23088
So, when I use a package manager method such as yum on a system, CFEngine builds a list of all installed packages the first time it's referenced. Subsequent package instalations / etc then use that cache rathr than listing everything again, apparently using the package_list_update_ifelapsed value. I have a need to alter a promise's behavior if a certain package is installed on the system. However, I do not want to install the package if it's missing - nor do I want to verify the package, as verification may fail for silly reasons like adjusted permissions. Is there a way to define a class for an installed package and to do so without forking an additional process, but rather, by just checking the already existing installed-packages cache? Right now, I'm just checking for the existances of a critical file from each given package, which is only slightly less lame than firing up "rpm -q" 50+ times. :) If this is not currently possible, I'd probably suggest an additional special function along the lines of is_package_installed(package_method, package_regexp) which could either populate that cache if it doesn't exist or use the cache if it does - and which could be used on the RHS of an expression parameter within a class definition. A couple of related functions like list_packages_matching(method, pattern) and get_package_version(method, pattern) might also be handy. :) _______________________________________________ Help-cfengine mailing list Help-cfengine@cfengine.org https://cfengine.org/mailman/listinfo/help-cfengine
