class Bosh::Director::Canonicalizer

Public Class Methods

canonicalize(string, opts = {}) click to toggle source
# File lib/bosh/director/dns/canonicalizer.rb, line 4
def self.canonicalize(string, opts = {})
  # a-z, 0-9, -, case insensitive, and must start with a letter
  string = string.downcase.gsub(/_/, "-")
  if opts[:allow_dots]
    string = string.gsub(/[^a-z0-9\-\.]/, "")
  else
    string = string.gsub(/[^a-z0-9\-]/, "")
  end

  validate_dns_name(string)
end
validate_dns_name(string) click to toggle source
# File lib/bosh/director/dns/canonicalizer.rb, line 16
def self.validate_dns_name(string)
  if string =~ /^(\d|-)/
    raise DnsInvalidCanonicalName,
          "Invalid DNS canonical name '#{string}', must begin with a letter"
  end
  if string =~ /-$/
    raise DnsInvalidCanonicalName,
          "Invalid DNS canonical name '#{string}', can't end with a hyphen"
  end
  string
end