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-rw-r--r--lib/puppet/parser/functions/write_package_names.rb22
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/write_package_names.rb b/lib/puppet/parser/functions/write_package_names.rb
new file mode 100644
index 0000000..8f99674
--- /dev/null
+++ b/lib/puppet/parser/functions/write_package_names.rb
@@ -0,0 +1,22 @@
+require 'fileutils'
+
+module Puppet::Parser::Functions
+ newfunction(:write_package_names, :doc => "Write package names which are managed via this puppet run to a file.") do |arg|
+ if arg[0].class == String
+ begin
+ output_file = arg[0]
+ packages = catalog.resources.collect { |r| r.title if r.type == 'Package' }.compact
+ FileUtils.mkdir_p(File.dirname(output_file))
+ File.open(output_file, 'w') do |f|
+ packages.each do |pkg_name|
+ f.write(pkg_name + "\n")
+ end
+ end
+ rescue JSON::ParserError
+ raise Puppet::ParseError, "Syntax error: #{arg[0]} is invalid"
+ end
+ else
+ raise Puppet::ParseError, "Syntax error: #{arg[0]} is not a String"
+ end
+ end
+end