Mercurial > repos > other > Puppet

annotate modules/stdlib/lib/puppet/parser/functions/pick.rb @ 0:956e484adc12

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial public release of Puppet configs
author IBBoard <dev@ibboard.co.uk>
date Sat, 16 Aug 2014 19:47:38 +0000
parents
children addb0ea390a1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
1 module Puppet::Parser::Functions
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
2 newfunction(:pick, :type => :rvalue, :doc => <<-EOS
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
3
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
4 This function is similar to a coalesce function in SQL in that it will return
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
5 the first value in a list of values that is not undefined or an empty string
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
6 (two things in Puppet that will return a boolean false value). Typically,
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
7 this function is used to check for a value in the Puppet Dashboard/Enterprise
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
8 Console, and failover to a default value like the following:
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
9
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
10 $real_jenkins_version = pick($::jenkins_version, '1.449')
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
11
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
12 The value of $real_jenkins_version will first look for a top-scope variable
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
13 called 'jenkins_version' (note that parameters set in the Puppet Dashboard/
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
14 Enterprise Console are brought into Puppet as top-scope variables), and,
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
15 failing that, will use a default value of 1.449.
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
16
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
17 EOS
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
18 ) do |args|
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
19 args = args.compact
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
20 args.delete(:undef)
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
21 args.delete(:undefined)
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
22 args.delete("")
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
23 if args[0].to_s.empty? then
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
24 fail "Must provide non empty value."
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
25 else
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
26 return args[0]
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
27 end
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
28 end
956e484adc12 Initial public release of Puppet configs
IBBoard <dev@ibboard.co.uk>
parents:
diff changeset
29 end