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author | Jeff McCune <jeff@puppetlabs.com> | 2012-10-25 10:58:27 -0700 |
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committer | Jeff McCune <jeff@puppetlabs.com> | 2012-10-25 10:58:27 -0700 |
commit | 12a146058ee885e9ad295e978b15465259a905c5 (patch) | |
tree | edb57c2cf326241c762052ab6431d96f464f6033 /lib/puppet/parser/functions/ensure_resource.rb | |
parent | 9693c04c9d877e0f877418bc41e16f01aaf784cd (diff) | |
parent | c2573298a5a58ca902d1d04ca2f91dd85bef6581 (diff) |
Merge branch 'maint/2.5.x/pick_compatible_new_functionality' into 2.5.x
* maint/2.5.x/pick_compatible_new_functionality:
Explicitly load functions used by ensure_resource
re-formatting
Add better docs about duplicate resource failures
Handle undef for parameter argument
Add function ensure_resource and defined_with_params
Diffstat (limited to 'lib/puppet/parser/functions/ensure_resource.rb')
-rw-r--r-- | lib/puppet/parser/functions/ensure_resource.rb | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/ensure_resource.rb b/lib/puppet/parser/functions/ensure_resource.rb new file mode 100644 index 0000000..fba2035 --- /dev/null +++ b/lib/puppet/parser/functions/ensure_resource.rb @@ -0,0 +1,35 @@ +# Test whether a given class or definition is defined +require 'puppet/parser/functions' + +Puppet::Parser::Functions.newfunction(:ensure_resource, + :type => :statement, + :doc => <<-'ENDOFDOC' +Takes a resource type, title, and a list of attributes that describe a +resource. + + user { 'dan': + ensure => present, + } + +This example only creates the resource if it does not already exist: + + ensure_resource('user, 'dan', {'ensure' => 'present' }) + +If the resource already exists but does not match the specified parameters, +this function will attempt to recreate the resource leading to a duplicate +resource definition error. + +ENDOFDOC +) do |vals| + type, title, params = vals + raise(ArgumentError, 'Must specify a type') unless type + raise(ArgumentError, 'Must specify a title') unless title + params ||= {} + Puppet::Parser::Functions.function(:defined_with_params) + if function_defined_with_params(["#{type}[#{title}]", params]) + Puppet.debug("Resource #{type}[#{title}] not created b/c it already exists") + else + Puppet::Parser::Functions.function(:create_resources) + function_create_resources([type.capitalize, { title => params }]) + end +end |