I don't have any examples handy, but the easiest way to try out managing
the file with Puppet is to store it somewhere, say /tmp/file.json and then
play around with it in augtool:
augtool -A -t 'Json incl /tmp/file.json'
augtool> match /files/tmp/file.json/dict/entry[. = 'svc_port']/*
/files/tmp/file.json/dict/entry[2]/string = 12345
augtool> set /files/tmp/file.json/dict/entry[. = 'svc_port']/string 4242
augtool> rm /files/tmp/file.json/dict/entry[. = 'svc_pass']
rm : /files/tmp/file.json/dict/entry[. = 'svc_pass'] 2
augtool> save
Saved 1 file(s)
augtool> quit
> cat /tmp/file.json
...
David
On Friday, November 1, 2013 11:57:25 AM UTC-7, John Simpson wrote:
>
> Greetings.
>
> I'm trying to find a few concrete examples of how to use augeas within a
> Puppet module, to make changes to a JSON file. I've been googling for the
> past hour and a half, and while I have found several pages which provide
> reference-type documentation, I have yet to see a single usable example.
> All of the augeas examples seem to demonstrate how to maintain a file for
> which some other lens applies, such as /etc/hosts or /etc/ssh/sshd_config.
>
> My situation: I have a system-wide JSON file which contains a series of
> key-value pairs, like so:
>
> {
> "svc_host" : "server.domain.xyz" ,
> "svc_port" : "12345" ,
> "svc_user" : "username" ,
> "svc_pass" : "password" ,
>
> "versions" : [ "1.0" , "1.0.1" , "1.0.2" ] ,
>
> "agent_installed" : "1383331588" ,
>
> "comment" : "This is a gratuitous comment."
> }
>
> I know that JSON is probably not be the best format for the file, but it's
> human readable, and it saves us having to write and debug configuration
> file parsing routines in seven different languages on four platforms.
>
> I would like to be able to use Puppet modules to maintain the file. My
> first thought, of course, was to use a template, but there are several
> different components of the system which all store data in the one file, so
> different modules need to maintain different sets of "keys" within the
> file.
>
> Is anybody doing something similar, and if so, would you mind sharing the
> relevant bits of your manifests? Or point me to an example of a WORKING
> augeas resource which adds or
>
> --
> John Simpson <jm...@voalte.com <javascript:>>
> Unix System/VM Developer and Engineering Operations, Voalte
> +1 (941) 312-2830 x148
>
>
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