Jira (PUP-8341) Lookup interpolation on alias to missing key should return not found

[Sean Millichamp (JIRA)]

Title: Message Title

Sean Millichamp created an issue   Puppet / PUP-8341 Lookup interpolation on alias to missing key should return not found Issue Type: Bug Affects Versions: PUP 5.3.3 Assignee: Thomas Hallgren Components: Hiera & Lookup Created: 2018/01/10 11:55 AM Priority: Normal Reporter: Sean Millichamp The Hiera interpolation function alias returns an empty string if the key referenced for lookup is not found. In order to preserve the intent of alias and its usefulness in re-mapping key names in lookups it should return a not found condition like a direct lookup of a missing Hiera key would, and not an empty string. For example, given: --- test::key: "%{alias('this_key_is_not_defined')}" Assuming no other keys are present in Hiera than above, you'll get the following behavior: $ puppet lookup --default mydefault --render-as json this_key_is_not_defined "mydefault" $ $ puppet lookup --default mydefault --render-as json test::key "" $ Alias not returning "not found" when the aliased key name is not found negatively impacts the usefulness of alias in re-mapping Hiera keys, particularly when using class automatic parameter lookups where parameter defaults are specified. Returning an empty string is a surprising and unexpected behavior. I've tested this on Puppet 4.10.x and master and they both behave similarly. Thank you. Add Comment   This message was sent by Atlassian JIRA (v7.0.2#70111-sha1:88534db) -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-bugs+unsubscr...@googlegroups.com. To post to this group, send email to puppet-bugs@googlegroups.com. Visit this group at https://groups.google.com/group/puppet-bugs. For more options, visit https://groups.google.com/d/optout.