Wildcards in default_file block

[bodgit]

I'm trying to create a new provider for managing devices in RANCiD using the lens I've created in hercules-team/augeas/pull/514 and I need to use a wildcard to match potentially multiple files with the pattern /etc/rancid/*/router.db. The lens in question works in augtool as a standalone lens with this pattern but I've found I can't use the same pattern in the default_file block as it hits https://github.com/hercules-team/augeasproviders_core/blob/604680cb5fe7e32fd1ad1051fc34ef100a4d6923/lib/puppet/provider/augeasprovider/default.rb#L555 which errors when there are multiple matches.

If I comment out that line then the provider seems to work using puppet resource rancid_device ... however I can see in the code there are a few places which expect to be given a single file and it's likely only working by fluke.

My provider is here: https://github.com/bodgit/puppet-rancid/blob/master/lib/puppet/provider/rancid_device/augeas.rb

I'm not sure if the answer is some Dir.glob action somewhere?

[raphink]

Eventually, I'm sure you'll be modifying only one file though. Would that kind of approach work for you? https://github.com/hercules-team/augeasproviders_grub/blob/master/lib/puppet/provider/kernel_parameter/grub.rb#L10-L12

[bodgit]

That doesn't really help, it's not an "either/or" pattern. RANCiD has the concept of groups which are collections of network devices and it's quite common to have more than one group. Each group is a separate directory with a separate router.db file, hence the wildcard; it's matching "all groups".

[bodgit]

It seems the only sticky bits are the aug.set('/augeas/context', ...) I mentioned originally and this block https://github.com/hercules-team/augeasproviders_core/blob/604680cb5fe7e32fd1ad1051fc34ef100a4d6923/lib/puppet/provider/augeasprovider/default.rb#L688 which won't currently run as File.exists? won't work if passed a glob, but something like Dir.glob(file).any? could work around that perhaps?

I can't see anything else that might be confused with a wildcard so would it be possible to expose some method of selectively disabling that aug.set('/augeas/context', ...) call from a child provider?

[raphink]

OK. What do you think @domcleal ?