class Kontejner::Server

Constants

GOOGLE_SERVERS
IN

Public Class Methods

new(domain:,docker:,ttl:) click to toggle source
# File lib/kontejner/server.rb, line 10
def initialize(domain:,docker:,ttl:)
  @dns = RubyDNS::RuleBasedServer.new

  @logger = @dns.logger
  @logger.level = Logger::DEBUG

  @matcher = /(?<subdomain>[^.]+)\.#{domain}$/
  @ttl = ttl

  @upstream = RubyDNS::Resolver.new(GOOGLE_SERVERS)
  @docker = Kontejner::Resolver.new(docker: docker)

  @logger.info("Docker Connection #{docker}")
end

Public Instance Methods

run(options) click to toggle source
# File lib/kontejner/server.rb, line 45
def run(options)
  EventMachine.run do
    trap("INT") do
      EventMachine.stop
    end

    @dns.run(options)
  end

  @dns.fire(:stop)
end
start(**options) click to toggle source
# File lib/kontejner/server.rb, line 25
def start(**options)
  @logger.debug("Matching #{@matcher}")

  @dns.match(@matcher, IN::A) do |t, match|
    ip = @docker.resolve(match[:subdomain])

    if ip
      t.respond!(ip, ttl: @ttl)
    else
      t.fail! :NXDomain
    end
  end

  @dns.otherwise do |q|
    q.passthrough!(@upstream)
  end

  run(options)
end