diff options
Diffstat (limited to 'lib/puppet/parser/functions/netmask_to_cidr.rb')
| -rw-r--r-- | lib/puppet/parser/functions/netmask_to_cidr.rb | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/netmask_to_cidr.rb b/lib/puppet/parser/functions/netmask_to_cidr.rb new file mode 100644 index 0000000..68ee4cf --- /dev/null +++ b/lib/puppet/parser/functions/netmask_to_cidr.rb @@ -0,0 +1,14 @@ +# Custom function to transform netmask from IP notation to +# CIDR format. Input is an IP address, output a CIDR: +# 255.255.255.0 = 24 +# The CIDR formated netmask is needed for some +# Contrail configuration files +require 'ipaddr' +module Puppet::Parser::Functions + newfunction(:netmask_to_cidr, :type => :rvalue) do |args| + if args[0].class != String + raise Puppet::ParseError, "Syntax error: #{args[0]} must be a String" + end + IPAddr.new(args[0]).to_i.to_s(2).count("1") + end +end |