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Modernise has_interface_with function
Convert the function to the modern function API as a namespaced function and use the `networking` fact instead of legacy facts. A non-namespaced shim is also created (but marked deprecated), to preserve compatibility.
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‎REFERENCE.md

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@@ -82,6 +82,7 @@ environment.
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* [`glob`](#glob): Uses same patterns as Dir#glob.
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* [`grep`](#grep): This function searches through an array and returns any elements that match
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the provided regular expression.
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* [`has_interface_with`](#has_interface_with): DEPRECATED. Use the namespaced function [`stdlib::has_interface_with`](#stdlibhas_interface_with) instead.
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* [`has_interface_with`](#has_interface_with): Returns boolean based on kind and value.
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* [`has_ip_address`](#has_ip_address): Returns true if the client has the requested IP address on some interface.
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* [`has_ip_network`](#has_ip_network): Returns true if the client has an IP address within the requested network.
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* [`stdlib::ensure`](#stdlib--ensure): function to cast ensure parameter to resource specific value
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* [`stdlib::extname`](#stdlib--extname): Returns the Extension (the Portion of Filename in Path starting from the
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last Period).
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* [`stdlib::has_interface_with`](#stdlib--has_interface_with): Returns boolean based on network interfaces present and their attribute values.
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* [`stdlib::ip_in_range`](#stdlib--ip_in_range): Returns true if the ipaddress is within the given CIDRs
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* [`stdlib::sha256`](#stdlib--sha256): Run a SHA256 calculation against a given value.
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* [`stdlib::start_with`](#stdlib--start_with): Returns true if str starts with one of the prefixes given. Each of the prefixes should be a String.
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grep(['aaa','bbb','ccc','aaaddd'], 'aaa') # Returns ['aaa','aaaddd']
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```
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### <a name="has_interface_with"></a>`has_interface_with`
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Type: Ruby 4.x API
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DEPRECATED. Use the namespaced function [`stdlib::has_interface_with`](#stdlibhas_interface_with) instead.
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#### `has_interface_with(Any *$args)`
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The has_interface_with function.
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Returns: `Any`
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##### `*args`
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Data type: `Any`
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### <a name="has_interface_with"></a>`has_interface_with`
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Type: Ruby 3.x API
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The Filename
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### <a name="stdlib--has_interface_with"></a>`stdlib::has_interface_with`
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Type: Ruby 4.x API
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Can be called with one, or two arguments.
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#### `stdlib::has_interface_with(String[1] $interface)`
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The stdlib::has_interface_with function.
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Returns: `Boolean` Returns `true` if `interface` exists and `false` otherwise
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##### Examples
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###### When called with a single argument, the presence of the interface is checked
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```puppet
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stdlib::has_interface_with('lo') # Returns `true`
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```
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##### `interface`
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Data type: `String[1]`
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The name of an interface
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#### `stdlib::has_interface_with(Enum['macaddress','netmask','ipaddress','network','ip','mac'] $kind, String[1] $value)`
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The stdlib::has_interface_with function.
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Returns: `Boolean` Returns `true` if any of the interfaces in the `networking` fact has a `kind` attribute with the value `value`. Otherwise returns `false`
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##### Examples
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###### Checking if an interface exists with a given mac address
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```puppet
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stdlib::has_interface_with('macaddress', 'x:x:x:x:x:x') # Returns `false`
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```
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###### Checking if an interface exists with a given IP address
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```puppet
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stdlib::has_interface_with('ipaddress', '127.0.0.1') # Returns `true`
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```
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##### `kind`
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Data type: `Enum['macaddress','netmask','ipaddress','network','ip','mac']`
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A supported interface attribute
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##### `value`
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Data type: `String[1]`
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The value of the attribute
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### <a name="stdlib--ip_in_range"></a>`stdlib::ip_in_range`
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Type: Ruby 4.x API

‎lib/puppet/functions/has_interface_with.rb

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# frozen_string_literal: true
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# @summary DEPRECATED. Use the namespaced function [`stdlib::has_interface_with`](#stdlibhas_interface_with) instead.
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Puppet::Functions.create_function(:has_interface_with) do
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dispatch :deprecation_gen do
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repeated_param 'Any', :args
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end
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def deprecation_gen(*args)
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call_function('deprecation', 'has_interface_with', 'This method is deprecated, please use stdlib::has_interface_with instead.')
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call_function('stdlib::has_interface_with', *args)
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end
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end

‎lib/puppet/functions/stdlib/has_interface_with.rb

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# frozen_string_literal: true
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# @summary Returns boolean based on network interfaces present and their attribute values.
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#
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# Can be called with one, or two arguments.
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Puppet::Functions.create_function(:'stdlib::has_interface_with') do
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# @param interface
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# The name of an interface
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# @return [Boolean] Returns `true` if `interface` exists and `false` otherwise
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# @example When called with a single argument, the presence of the interface is checked
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# stdlib::has_interface_with('lo') # Returns `true`
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dispatch :has_interface do
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param 'String[1]', :interface
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return_type 'Boolean'
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end
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# @param kind
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# A supported interface attribute
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# @param value
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# The value of the attribute
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# @return [Boolean] Returns `true` if any of the interfaces in the `networking` fact has a `kind` attribute with the value `value`. Otherwise returns `false`
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# @example Checking if an interface exists with a given mac address
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# stdlib::has_interface_with('macaddress', 'x:x:x:x:x:x') # Returns `false`
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# @example Checking if an interface exists with a given IP address
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# stdlib::has_interface_with('ipaddress', '127.0.0.1') # Returns `true`
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dispatch :has_interface_with do
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param "Enum['macaddress','netmask','ipaddress','network','ip','mac']", :kind
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param 'String[1]', :value
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return_type 'Boolean'
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end
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def has_interface(interface) # rubocop:disable Naming/PredicateName
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interfaces.key? interface
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end
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def has_interface_with(kind, value) # rubocop:disable Naming/PredicateName
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# For compatibility with older version of function that used the legacy facts, alias `ip` with `ipaddress` and `mac` with `macaddress`
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kind = 'ip' if kind == 'ipaddress'
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kind = 'mac' if kind == 'macaddress'
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interfaces.any? { |_interface, params| params[kind] == value }
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end
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def interfaces
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closure_scope['facts']['networking']['interfaces']
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end
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end

‎spec/functions/has_interface_with_spec.rb

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describe 'has_interface_with' do
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it { is_expected.not_to eq(nil) }
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it { is_expected.to run.with_params.and_raise_error(Puppet::ParseError, %r{wrong number of arguments}i) }
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it { is_expected.to run.with_params('one', 'two', 'three').and_raise_error(Puppet::ParseError, %r{wrong number of arguments}i) }
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it { is_expected.to run.with_params.and_raise_error(ArgumentError, %r{expects between 1 and 2 arguments, got none}) }
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it { is_expected.to run.with_params('one', 'two', 'three').and_raise_error(ArgumentError, %r{expects between 1 and 2 arguments, got 3}) }
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# We need to mock out the Facts so we can specify how we expect this function
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# to behave on different platforms.
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context 'when on Mac OS X Systems' do
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let(:facts) { { interfaces: 'lo0,gif0,stf0,en1,p2p0,fw0,en0,vmnet1,vmnet8,utun0' } }
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let(:facts) do
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{
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'networking' => {
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'interfaces' => {
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'lo0' => {
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'bindings' => [
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{
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'address' => '127.0.0.1',
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'netmask' => '255.0.0.0',
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'network' => '127.0.0.0'
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},
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],
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"bindings6": [
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{
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'address' => '::1',
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'netmask' => 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
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'network' => '::1'
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},
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{
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'address' => 'fe80::1',
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'netmask' => 'ffff:ffff:ffff:ffff::',
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'network' => 'fe80::'
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},
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],
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'ip' => '127.0.0.1',
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'ip6' => '::1',
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'mtu' => 16_384,
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'netmask' => '255.0.0.0',
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'netmask6' => 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
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'network' => '127.0.0.0',
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'network6' => '::1',
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'scope6' => 'host'
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},
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}
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}
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}
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end
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it { is_expected.to run.with_params('lo0').and_return(true) }
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it { is_expected.to run.with_params('lo').and_return(false) }
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context 'when on Linux Systems' do
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let(:facts) do
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{
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interfaces: 'eth0,lo',
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ipaddress: '10.0.0.1',
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ipaddress_lo: '127.0.0.1',
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ipaddress_eth0: '10.0.0.1',
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muppet: 'kermit',
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muppet_lo: 'mspiggy',
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muppet_eth0: 'kermit',
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'networking' => {
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'interfaces' => {
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'eth0' => {
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'bindings' => [
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{
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'address' => '10.0.2.15',
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'netmask' => '255.255.255.0',
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'network' => '10.0.2.0'
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},
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],
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'bindings6' => [
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{
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'address' => 'fe80::5054:ff:fe8a:fee6',
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'netmask' => 'ffff:ffff:ffff:ffff::',
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'network' => 'fe80::'
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},
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],
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'dhcp' => '10.0.2.2',
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'ip' => '10.0.2.15',
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'ip6' => 'fe80::5054:ff:fe8a:fee6',
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'mac' => '52:54:00:8a:fe:e6',
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'mtu' => 1500,
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'netmask' => '255.255.255.0',
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'netmask6' => 'ffff:ffff:ffff:ffff::',
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'network' => '10.0.2.0',
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'network6' => 'fe80::'
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},
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'eth1' => {
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'bindings' => [
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{
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'address' => '10.0.0.2',
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'netmask' => '255.255.255.0',
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'network' => '10.0.0.0'
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},
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],
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'bindings6' => [
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{
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'address' => 'fe80::a00:27ff:fed1:d28c',
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'netmask' => 'ffff:ffff:ffff:ffff::',
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'network' => 'fe80::'
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},
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],
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'ip' => '10.0.0.2',
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'ip6' => 'fe80::a00:27ff:fed1:d28c',
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'mac' => '08:00:27:d1:d2:8c',
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'mtu' => 1500,
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'netmask' => '255.255.255.0',
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'netmask6' => 'ffff:ffff:ffff:ffff::',
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'network' => '10.0.0.0',
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'network6' => 'fe80::'
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},
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'lo' => {
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'bindings' => [
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{
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'address' => '127.0.0.1',
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'netmask' => '255.0.0.0',
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'network' => '127.0.0.0'
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},
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],
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'bindings6' => [
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{
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'address' => '::1',
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'netmask' => 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
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'network' => '::1'
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},
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],
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'ip' => '127.0.0.1',
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'ip6' => '::1',
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'mtu' => 65_536,
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'netmask' => '255.0.0.0',
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'netmask6' => 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
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'network' => '127.0.0.0',
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'network6' => '::1'
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}
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},
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},
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}
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end
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it { is_expected.to run.with_params('lo').and_return(true) }
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it { is_expected.to run.with_params('lo0').and_return(false) }
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it { is_expected.to run.with_params('ipaddress', '127.0.0.1').and_return(true) }
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it { is_expected.to run.with_params('ipaddress', '10.0.0.1').and_return(true) }
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it { is_expected.to run.with_params('ipaddress', '10.0.0.2').and_return(true) }
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it { is_expected.to run.with_params('ipaddress', '8.8.8.8').and_return(false) }
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it { is_expected.to run.with_params('muppet', 'kermit').and_return(true) }
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it { is_expected.to run.with_params('muppet', 'mspiggy').and_return(true) }
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it { is_expected.to run.with_params('muppet', 'bigbird').and_return(false) }
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it { is_expected.to run.with_params('netmask', '255.255.255.0').and_return(true) }
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it { is_expected.to run.with_params('macaddress', '52:54:00:8a:fe:e6').and_return(true) }
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it { is_expected.to run.with_params('network', '42.0.0.0').and_return(false) }
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it { is_expected.to run.with_params('network', '10.0.0.0').and_return(true) }
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end
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end

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