On 21/08/17 22:18, John Baird wrote:
I see the "yaml_data" and "json_data" backends, but unfortunately, I'm
not a Ruby developer and trying to mock those into a file_data backend
is proving frustratingly obnoxious. Honestly, I wish a "file_data"
backend was included by default as I feel there a TON of value in it's
existence, but that's another topic.
Basically, from the documentation
at https://docs.puppet.com/puppet/5.0/hiera_custom_data_hash.html, I am
able to make a custom backend, but unable to get it to parse the
directory structure properly and retrieve the entire contents of the file.
If you have something that would work, I would love to get it working on
my end.
You can write functions in the puppet language as well as in Ruby if
that is more convenient for you. Then depending on what the format of
the data file you want read is, you could either use an existing
function that reads JSON/YAML etc. If there is no reader you would be
best off to write a separate function that can read a particular format,
and then use that to parse the file and serve data from it using a hiera
5 backend compliant function.
The functions that just read a file and returns it a a hash are very
simple
(https://github.com/puppetlabs/puppet/blob/master/lib/puppet/functions/json_data.rb)
which is basically JSON.parse and some error handling around that.
I would expect a custom backend function that you write to be given an
argument that is the absolute path to the file you want read. That is
given in the hiera.yaml.
Is it that you want a structure that defines the keys and that the files
themselves are the resulting value? (Have not looked at hiera-file
backend). If so, then it sounds like just translating the key to lookup
to a path (splitting on '::' and and joining with '/') plus appending
that to a base path where the files are to be found (given as an option
when adding the function to the hiera.yaml hierarchy). Then reading that
file or producing a "not found" if the file does not exists.
If you have the start of this in Ruby somewhere I am happy to help you
review and point out what to change.
Best,
- henrik
On Monday, August 21, 2017 at 3:14:42 PM UTC-5, Henrik Lindberg wrote:
On 21/08/17 22:03, John Baird wrote:
> There was an old hiera 3.X hiera-file backend now owned on github by
> voxpupuli... does anyone have a working example of how to
reproduce this
> in Puppet 5 with the next data_hash contexts? Puppet's
documentation
> seems woefully lacking in this area.
>
> Basically, I would like to be able to serve up `/etc/hosts` file
from
> hiera backend, for example.
>
That should be incredibly simple to achieve with hiera 5.
What is it that you feel is lacking in terms of documentation?
- henrik
--
Visit my Blog "Puppet on the Edge"
http://puppet-on-the-edge.blogspot.se/
<http://puppet-on-the-edge.blogspot.se/>
--
You received this message because you are subscribed to the Google
Groups "Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send
an email to puppet-users+unsubscr...@googlegroups.com
<mailto:puppet-users+unsubscr...@googlegroups.com>.
To view this discussion on the web visit
https://groups.google.com/d/msgid/puppet-users/9154ad28-5f52-40b9-87a6-62ba6ac89e85%40googlegroups.com
<https://groups.google.com/d/msgid/puppet-users/9154ad28-5f52-40b9-87a6-62ba6ac89e85%40googlegroups.com?utm_medium=email&utm_source=footer>.
For more options, visit https://groups.google.com/d/optout.
--
Visit my Blog "Puppet on the Edge"
http://puppet-on-the-edge.blogspot.se/
--
You received this message because you are subscribed to the Google Groups "Puppet
Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/puppet-users/onfg3n%249d3%241%40blaine.gmane.org.
For more options, visit https://groups.google.com/d/optout.
