Class: Cisco::RouterBgpAF

Inherits:
NodeUtil show all
Defined in:
lib/cisco_node_utils/bgp_af.rb

Overview

RouterBgpAF - node utility class for BGP address-family config management

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from NodeUtil

client, #client, config_get, #config_get, #config_get_default, config_get_default, config_set, #config_set, #get, #ios_xr?, #nexus?, #node, node, platform, #platform, supports?, #supports?

Constructor Details

#initialize(asn, vrf, af, instantiate = true) ⇒ RouterBgpAF

Returns a new instance of RouterBgpAF.



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# File 'lib/cisco_node_utils/bgp_af.rb', line 27

def initialize(asn, vrf, af, instantiate=true)
  fail ArgumentError if vrf.to_s.empty? || af.to_s.empty?
  err_msg = '"af" argument must be an array of two string values ' \
    'containing an afi + safi tuple'
  fail ArgumentError, err_msg unless af.is_a?(Array) || af.length == 2
  err_msg = '"vrf" argument must be "default" for l2vpn address-family'
  fail ArgumentError, err_msg if vrf != 'default' && af[1][/evpn/]
  @asn = RouterBgp.validate_asnum(asn)
  @vrf = vrf
  @afi, @safi = af
  set_args_keys_default
  create if instantiate
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(*args) ⇒ Object

Universal Getter, Default Getter, and Setter



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# File 'lib/cisco_node_utils/bgp_af.rb', line 508

def method_missing(*args)
  name = args[0].to_s
  if args.length == 1 # Getter
    if name =~ /^default_(.*)$/
      config_get_default('bgp_af', Regexp.last_match(1))
    else
      config_get('bgp_af', name, @get_args)
    end
  elsif args.length == 2 && name =~ /^(.*)=$/ # Setter
    set_args_keys(state: args[1] ? '' : 'no')
    config_set('bgp_af', Regexp.last_match(1), @set_args)
  else
    super
  end
end

Class Method Details

.afs ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 41

def self.afs
  af_hash = {}
  RouterBgp.routers.each do |asn, vrfs|
    af_hash[asn] = {}
    vrfs.keys.each do |vrf_name|
      get_args = { asnum: asn }
      get_args[:vrf] = vrf_name unless vrf_name == 'default'
      # Call yaml and search for address-family statements
      af_list = config_get('bgp_af', 'all_afs', get_args)

      next if af_list.nil?

      af_hash[asn][vrf_name] = {}
      af_list.each do |af|
        af_hash[asn][vrf_name][af] =
          RouterBgpAF.new(asn, vrf_name, af, false)
      end
    end
  end
  af_hash
end

Instance Method Details

#additional_paths_selection=(route_map) ⇒ Object

additional paths (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 141

def additional_paths_selection=(route_map)
  route_map.strip!
  if route_map.empty?
    state = 'no'
    # Dummy routemap required if not configured.
    if additional_paths_selection.empty?
      route_map = 'dummy_routemap'
    else
      route_map = additional_paths_selection
    end
  end
  set_args_keys(state: state, route_map: route_map, route_policy: route_map)
  config_set('bgp_af', 'additional_paths_selection', @set_args)
end

advertise_l2vpn_evpn



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# File 'lib/cisco_node_utils/bgp_af.rb', line 157

def advertise_l2vpn_evpn
  config_get('bgp_af', 'advertise_l2vpn_evpn', @get_args)
end
 


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# File 'lib/cisco_node_utils/bgp_af.rb', line 161

def advertise_l2vpn_evpn=(state)
  Feature.nv_overlay_evpn_enable if platform == :nexus
  set_args_keys(state: (state ? '' : 'no'))
  config_set('bgp_af', 'advertise_l2vpn_evpn', @set_args)
end

#client_to_client=(state) ⇒ Object

Client to client (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 103

def client_to_client=(state)
  # IOS XR uses "client-to-client reflection disable",
  #     so turning it "on" means disabling it.
  # Thus we invert the desired state before telling the CLI what to do:
  state = !state if ios_xr?
  set_args_keys(state: (state ? '' : 'no'))
  config_set('bgp_af', 'client_to_client', @set_args)
end

#create ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 63

def create
  if platform == :nexus
    Feature.bgp_enable
    Feature.nv_overlay_evpn_enable if @safi[/evpn/]
  end
  set_args_keys(state: '')
  config_set('bgp', 'address_family', @set_args)
end

#dampen_igp_metric ⇒ Object

dampen_igp_metric



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# File 'lib/cisco_node_utils/bgp_af.rb', line 172

def dampen_igp_metric
  match = config_get('bgp_af', 'dampen_igp_metric', @get_args)
  if match.is_a?(Array)
    return nil if match[0] == 'no '
    return match[1].to_i if match[1]
  end
  default_dampen_igp_metric
end

#dampen_igp_metric=(val) ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 181

def dampen_igp_metric=(val)
  set_args_keys(state: (val.nil?) ? 'no' : '',
                num:   (val.nil?) ? '' : val)
  config_set('bgp_af', 'dampen_igp_metric', @set_args)
end

#dampening ⇒ Object

The data presented to or retrieved from the config_set and config_get for dampening is one of 4 possibilities:

Value Meaning —– ——- nil Dampening is not configured

Dampening is configured with no options

1,3,4,5,nil

Dampening + decay, reuse, suppress, suppress_max

nil,nil,nil,nil,‘route-map’

Dampening + routemap



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# File 'lib/cisco_node_utils/bgp_af.rb', line 200

def dampening
  data = config_get('bgp_af', 'dampening', @get_args)
  return nil if data.nil? # no dampening

  data = data.flatten

  # dampening nil nil nil nil nil
  val = []

  if !data[4].nil?
    # dampening nil nil nil nil route-map
    val = data[4]
  elsif !data[3].nil? && data[4].nil?
    # dampening 1 2 3 4 nil
    val = data[0..3]
  end

  val
end

#dampening=(damp_array) ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 280

def dampening=(damp_array)
  fail ArgumentError if damp_array.kind_of?(Array) &&
                        !(damp_array.length == 4 ||
                          damp_array.length == 0)

  # Set defaults args
  state = ''
  route_map = ''
  decay = ''
  reuse = ''
  suppress = ''
  suppress_max = ''

  if damp_array.nil?
    # 'no dampening ...' command - no dampening handles all cases
    state = 'no'
    Cisco::Logger.debug("Dampening 'no dampening'")
  elsif damp_array.empty?
    # 'dampening' command - nothing to do here
    Cisco::Logger.debug("Dampening 'dampening'")
  elsif damp_array.size == 4
    # 'dampening dampening_decay dampening_reuse \
    #   dampening_suppress dampening_suppress_max' command
    decay =        damp_array[0]
    reuse =        damp_array[1]
    suppress =     damp_array[2]
    suppress_max = damp_array[3]
    Cisco::Logger.debug("Dampening 'dampening #{damp_array.join(' ')}''")
  else
    # 'dampening route-map WORD' command
    route_map = "route-map #{damp_array}"    if platform == :nexus
    route_map = "route-policy #{damp_array}" if platform == :ios_xr
    route_map.strip!
    Cisco::Logger.debug("Dampening 'dampening route-map #{route_map}'")
  end

  # Set final args
  set_args_keys(
    state:        state,
    route_map:    route_map,
    decay:        decay,
    reuse:        reuse,
    suppress:     suppress,
    suppress_max: suppress_max,
  )

  Cisco::Logger.debug("Dampening args=#{@set_args}")
  config_set('bgp_af', 'dampening', @set_args)
end

#dampening_half_time ⇒ Object

For all of the following dampening getters, half_time, reuse_time, suppress_time, and max_suppress_time, return nil if dampening is not configured, but also return nil if a dampening routemap is configured because they are mutually exclusive.



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# File 'lib/cisco_node_utils/bgp_af.rb', line 229

def dampening_half_time
  return nil if dampening.nil? || dampening_routemap_configured?
  if dampening.is_a?(Array) && !dampening.empty?
    dampening[0].to_i
  else
    default_dampening_half_time
  end
end

#dampening_max_suppress_time ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 256

def dampening_max_suppress_time
  return nil if dampening.nil? || dampening_routemap_configured?
  if dampening.is_a?(Array) && !dampening.empty?
    dampening[3].to_i
  else
    default_dampening_max_suppress_time
  end
end

#dampening_reuse_time ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 238

def dampening_reuse_time
  return nil if dampening.nil? || dampening_routemap_configured?
  if dampening.is_a?(Array) && !dampening.empty?
    dampening[1].to_i
  else
    default_dampening_reuse_time
  end
end

#dampening_routemap ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 265

def dampening_routemap
  if dampening.nil? || (dampening.is_a?(String) && dampening.size > 0)
    return dampening
  end
  default_dampening_routemap
end

#dampening_routemap_configured? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cisco_node_utils/bgp_af.rb', line 272

def dampening_routemap_configured?
  if dampening_routemap.is_a?(String) && dampening_routemap.size > 0
    true
  else
    false
  end
end

#dampening_state ⇒ Object

Return true if dampening is enabled, else false.



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# File 'lib/cisco_node_utils/bgp_af.rb', line 221

def dampening_state
  !dampening.nil?
end

#dampening_suppress_time ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 247

def dampening_suppress_time
  return nil if dampening.nil? || dampening_routemap_configured?
  if dampening.is_a?(Array) && !dampening.empty?
    dampening[2].to_i
  else
    default_dampening_suppress_time
  end
end

#default_information_originate ⇒ Object

Default Information (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 116

def default_information_originate
  config_get('bgp_af', 'default_information_originate', @get_args)
end

#default_metric ⇒ Object

default_metric (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 360

def default_metric
  config_get('bgp_af', 'default_metric', @get_args)
end

#default_metric=(val) ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 364

def default_metric=(val)
  # To remove the default_metric you can not use 'no default_metric'
  # dummy metric to work around this
  dummy_metric = 1
  set_args_keys(state: (val == default_default_metric) ? 'no' : '',
                num:   (val == default_default_metric) ? dummy_metric : val)
  config_set('bgp_af', 'default_metric', @set_args)
end

#default_redistribute ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 477

def default_redistribute
  config_get_default('bgp_af', 'redistribute')
end

#destroy ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 72

def destroy
  set_args_keys(state: 'no')
  config_set('bgp', 'address_family', @set_args)
end

#distance_ebgp ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 338

def distance_ebgp
  ebgp, _ibgp, _local = distance
  return default_distance_ebgp if ebgp.nil?
  ebgp.to_i
end

#distance_ibgp ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 344

def distance_ibgp
  _ebgp, ibgp, _local = distance
  return default_distance_ibgp if ibgp.nil?
  ibgp.to_i
end

#distance_local ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 350

def distance_local
  _ebgp, _ibgp, local = distance
  return default_distance_local if local.nil?
  local.to_i
end

#distance_set(ebgp, ibgp, local) ⇒ Object

Distance (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 333

def distance_set(ebgp, ibgp, local)
  set_args_keys(state: '', ebgp: ebgp, ibgp: ibgp, local: local)
  config_set('bgp_af', 'distance', @set_args)
end

#fail_unsupported(callee) ⇒ Object

PROPERTIES #



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# File 'lib/cisco_node_utils/bgp_af.rb', line 95

def fail_unsupported(callee)
  fail Cisco::UnsupportedError.new('bgp_af', callee.to_s)
end

#inject_map ⇒ Object

inject_map (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 377

def inject_map
  cmds = config_get('bgp_af', 'inject_map', @get_args)
  cmds.nil? ? nil : cmds.each(&:compact!).sort
end

#inject_map=(should_list) ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 382

def inject_map=(should_list)
  c = inject_map
  fail_unsupported(__callee__) if c.nil?
  delta_hash = Utils.delta_add_remove(should_list, c)
  return if delta_hash.values.flatten.empty?
  [:add, :remove].each do |action|
    Cisco::Logger.debug("inject_map delta #{@get_args}\n #{action}: " \
                        "#{delta_hash[action]}")
    delta_hash[action].each do |inject, exist, copy|
      # inject & exist are mandatory, copy is optional
      state = (action == :add) ? '' : 'no'
      copy = 'copy-attributes' unless copy.nil?
      set_args_keys(state: state, inject: inject, exist: exist, copy: copy)
      config_set('bgp_af', 'inject_map', @set_args)
    end
  end
end

#maximum_paths=(val) ⇒ Object

maximum_paths (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 404

def maximum_paths=(val)
  set_args_keys(state: (val == default_maximum_paths) ? 'no' : '',
                num:   (val == default_maximum_paths) ? '' : val)
  config_set('bgp_af', 'maximum_paths', @set_args)
end

#maximum_paths_ibgp=(val) ⇒ Object 



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# File 'lib/cisco_node_utils/bgp_af.rb', line 410

def maximum_paths_ibgp=(val)
  set_args_keys(state: (val == default_maximum_paths_ibgp) ? 'no' : '',
                num:   (val == default_maximum_paths_ibgp) ? '' : val)
  config_set('bgp_af', 'maximum_paths_ibgp', @set_args)
end

#networks ⇒ Object

Build an array of all network commands currently on the device



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# File 'lib/cisco_node_utils/bgp_af.rb', line 421

def networks
  c = config_get('bgp_af', 'networks', @get_args)
  c.nil? ? nil : c.each(&:compact!)
end

#networks=(should_list) ⇒ Object

networks setter. Processes a hash of network commands from delta_add_remove().



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# File 'lib/cisco_node_utils/bgp_af.rb', line 428

def networks=(should_list)
  delta_hash = Utils.delta_add_remove(should_list, networks)
  return if delta_hash.values.flatten.empty?
  [:add, :remove].each do |action|
    Cisco::Logger.debug("networks delta #{@get_args}\n #{action}: " \
                        "#{delta_hash[action]}")
    delta_hash[action].each do |network, route_map_policy|
      state = (action == :add) ? '' : 'no'
      network = Utils.process_network_mask(network)
      unless route_map_policy.nil?
        route_map = "route-map #{route_map_policy}"
        route_policy = "route-policy #{route_map_policy}"
      end
      set_args_keys(state: state, network: network, route_map: route_map,
                    route_policy: route_policy)
      config_set('bgp_af', 'networks', @set_args)
    end
  end
end

#next_hop_route_map=(route_map) ⇒ Object

Next Hop route map (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 123

def next_hop_route_map=(route_map)
  route_map.strip!
  if route_map.empty?
    state = 'no'
    # Dummy routemap required if not configured.
    if next_hop_route_map.empty?
      route_map = 'dummy_routemap'
    else
      route_map = next_hop_route_map
    end
  end
  set_args_keys(state: state, route_map: route_map)
  config_set('bgp_af', 'next_hop_route_map', @set_args)
end

#redistribute ⇒ Object

Build an array of all redistribute commands currently on the device



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# File 'lib/cisco_node_utils/bgp_af.rb', line 453

def redistribute
  c = config_get('bgp_af', 'redistribute', @get_args)
  c.nil? ? nil : c.each(&:compact!).sort
end

#redistribute=(should) ⇒ Object

redistribute setter. Process a hash of redistribute commands from delta_add_remove().



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# File 'lib/cisco_node_utils/bgp_af.rb', line 460

def redistribute=(should)
  delta_hash = Utils.delta_add_remove(should, redistribute)
  return if delta_hash.values.flatten.empty?
  [:add, :remove].each do |action|
    Cisco::Logger.debug("redistribute delta #{@get_args}\n #{action}: " \
                        "#{delta_hash[action]}")
    delta_hash[action].each do |protocol, policy|
      state = (action == :add) ? '' : 'no'
      set_args_keys(state: state, protocol: protocol, policy: policy)

      # route-map/policy may be optional on some platforms
      cmd = policy.nil? ? 'redistribute' : 'redistribute_policy'
      config_set('bgp_af', cmd, @set_args)
    end
  end
end

#respond_to?(method_sym, _include_private = false) ⇒ Boolean

Is the given name available in the YAML?

Returns:

  • (Boolean) 


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# File 'lib/cisco_node_utils/bgp_af.rb', line 525

def respond_to?(method_sym, _include_private=false)
  name = method_sym.to_s
  key = :getter?
  if name =~ /^(.*)=$/
    name = Regexp.last_match(1)
    # Use table_map_set() to set these properties
    return false if name == 'table_map' || name == 'table_map_filter'
    key = :setter?
  elsif name =~ /^default_(.*)$/
    name = Regexp.last_match(1)
    key = :default_value?
  end
  begin
    ref = node.cmd_ref.lookup('bgp_af', name)
    ref.send(key)
  rescue IndexError
    super
  end
end

#set_args_keys(hash = {}) ⇒ Object

rubocop:disable Style/AccessorMethodName



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# File 'lib/cisco_node_utils/bgp_af.rb', line 86

def set_args_keys(hash={}) # rubocop:disable Style/AccessorMethodName
  set_args_keys_default
  @set_args = @get_args.merge!(hash) unless hash.empty?
end

#set_args_keys_default ⇒ Object

Helper methods to delete @set_args hash keys



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# File 'lib/cisco_node_utils/bgp_af.rb', line 80

def set_args_keys_default
  keys = { asnum: @asn, afi: @afi, safi: @safi }
  keys[:vrf] = @vrf unless @vrf == 'default'
  @get_args = @set_args = keys
end

#table_map_set(map, filter = false) ⇒ Object

Table Map (Getter/Setter/Default)



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# File 'lib/cisco_node_utils/bgp_af.rb', line 485

def table_map_set(map, filter=false)
  # To remove table map we can not use 'no table-map'
  # Dummy-map specified to work around this
  if filter
    attr = 'table_map_filter'
  else
    attr = 'table_map'
  end
  dummy_map = 'dummy'
  if map == default_table_map
    @set_args[:state] = 'no'
    @set_args[:map] = dummy_map
  else
    @set_args[:state] = ''
    @set_args[:map] = map
  end
  config_set('bgp_af', attr, @set_args)
  set_args_keys_default
end