Class: Vagrant::Action::Up

Inherits:
Object
  • Object
show all
Defined in:
lib/vagrant-powerdns/action.rb

Instance Method Summary collapse

Constructor Details

#initialize(app, env) ⇒ Up

Returns a new instance of Up.



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# File 'lib/vagrant-powerdns/action.rb', line 5

def initialize(app, env)
  @app = app
  @machine = env[:machine]
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/vagrant-powerdns/action.rb', line 10

def call(env)
  if @machine.config.powerdns.enabled?
    @zone = env[:machine].config.powerdns.default_zone
    @host = env[:machine].config.vm.hostname.nil? ?
      env[:machine].name.to_s : env[:machine].config.vm.hostname.to_s
    @domain = @host.include?(@zone.name)? @host : @host + @zone.dotted

    # Identify who i am
    @myuser = Etc.getlogin.gsub(/\s+/, '')
    @myhost = Socket.gethostname

    # assume default gateway address
    @machine.communicate.sudo "ip route get to 8.8.8.8 | head -n 1" do |type,data|
      stdout = data.chomp if type == :stdout
      if !stdout.empty?
        re = /src ([0-9\.]+)/
        ip = stdout.match(re)[1]
        zone = @zone.name

        p = PdnsRestApiClient.new(env[:machine].config.powerdns.api_url,
                                  env[:machine].config.powerdns.api_key)
        begin
          # Only update if IP changed or inactive
          record_not_found = p.zone(zone)["records"].select {|v| v["type"] == "A" and v["name"] == @domain and v["content"] == ip}.empty?
          record_disabled = p.zone(zone)["records"].select { |v| v["type"] == "A" and v["name"] == @domain and v["disable"]}.empty?
        rescue
          env[:ui].info "PowerDNS: Error while calling PowernDNS API. Skip DNS action..."
          return
        end

        if record_not_found or record_disabled
          env[:ui].info "PowerDNS action..."
          # Append new comment
          new_comment = {
            content: "#{@myuser} added this record from #{@myhost}",
            account: @myuser,
            name: @domain,
            type: "A"
          }
          comments = p.zone(zone)["comments"].delete_if { |v| v["name"] != @domain  }
          comments << new_comment

          ret = p.modify_domain(domain: @domain, ip: ip, zone_id: zone,
                                comments: comments)

          # Check return
          error = nil
          if ret.is_a?(String)
            error = ret
          else
            if ret.is_a?(Hash)
              error = ret.values[0] if ret.keys[0] == "error"
            else
              raise "Unknown esponse from PowerDNS API"
            end
          end

          # Display ui
          if error.nil?
              env[:ui].detail "=> record #{@domain}(#{ip}) in zone #{zone} added !"
          else
            env[:ui].detail "=> failed to add record #{@domain}(#{ip}) in zone #{zone}. Error was: #{error}"
          end
        end
      end
    end

    @app.call(env)
  end
end