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-rw-r--r--lib/puppet/parser/functions/defined_with_params.rb35
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/defined_with_params.rb b/lib/puppet/parser/functions/defined_with_params.rb
new file mode 100644
index 0000000..d7df306
--- /dev/null
+++ b/lib/puppet/parser/functions/defined_with_params.rb
@@ -0,0 +1,35 @@
+# Test whether a given class or definition is defined
+require 'puppet/parser/functions'
+
+Puppet::Parser::Functions.newfunction(:defined_with_params,
+ :type => :rvalue,
+ :doc => <<-'ENDOFDOC'
+Takes a resource reference and an optional hash of attributes.
+
+Returns true if a resource with the specified attributes has already been added
+to the catalog, and false otherwise.
+
+ user { 'dan':
+ ensure => present,
+ }
+
+ if ! defined_with_params(User[dan], {'ensure' => 'present' }) {
+ user { 'dan': ensure => present, }
+ }
+ENDOFDOC
+) do |vals|
+ reference, params = vals
+ raise(ArgumentError, 'Must specify a reference') unless reference
+ if (! params) || params == ''
+ params = {}
+ end
+ ret = false
+ if resource = findresource(reference.to_s)
+ matches = params.collect do |key, value|
+ resource[key] == value
+ end
+ ret = params.empty? || !matches.include?(false)
+ end
+ Puppet.debug("Resource #{reference} was not determined to be defined")
+ ret
+end