Puppet Function: stdlib_aws::subnet_id_to_cidr

Defined in:
lib/puppet/functions/stdlib_aws/subnet_id_to_cidr.rb
Function type:
Ruby 4.x API

Overview

stdlib_aws::subnet_id_to_cidr(String $subnetid, Optional[String] $region) ⇒ String

Returns a CIDR address for a given AWS Subnet ID, by region. Uses default region when none is given.

Parameters:

  • subnetid (String) —

    The AWS Subnet ID you wish to retrieve CIDR info for.

  • region (Optional[String]) —

    Optionally, the region to use for subnet discovery. Will use default region for your AWS credentials if not supplied.

Returns:

  • (String) —

    Returns the CIDR-notation network info for a subnet, as a string.



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# File 'lib/puppet/functions/stdlib_aws/subnet_id_to_cidr.rb', line 5

Puppet::Functions.create_function(:'stdlib_aws::subnet_id_to_cidr') do
  # Returns the correct IPv4 CIDR value for a given AWS subnet.
  # @param subnetid The AWS Subnet ID you wish to retrieve CIDR info for.
  # @param region Optionally, the region to use for subnet discovery. Will use default region for your AWS credentials if not supplied.
  # @return [String] Returns the CIDR-notation network info for a subnet, as a string.
  dispatch :cidr_from_subnet_id do
    param 'String', :subnetid
    optional_param 'String', :region
    return_type 'String'
  end

  def ec2_client(region)
    case region
    when nil
      Aws::EC2::Resource.new
    when String
      Aws::EC2::Resource.new({region: region})
    end
  end

  def cidr_from_subnet_id(subnetid, region=nil)
    client = ec2_client(region)
    client.subnet(subnetid).cidr_block
  end
end