(FACT-3163) Add support for OpenBSD

Most inspiration taken from FreeBSD, rest from other OS,
and some own creations. Not all core facts supported, but
makes puppet facts works well, as well as puppet agent --test

Developed/Tested on OpenBSD 7.2, AMD64, Puppet 7.20.0, Ruby 3.1.2

also disable RuboCop Metrics/PerceivedComplexity
and Metrics/CyclomaticComplexity
as suggested by @joshcooper

Additionally:
Case insensitive OS detection

ran into trouble when facter installed via puppetserver gem install,
there the OS returned seems to be OpenBSD instead of all lowercase.

Author: buzzdeee

.rubocop.yml

@@ -55,27 +55,10 @@ Metrics/AbcSize:
   Enabled: false
 
 Metrics/PerceivedComplexity:
-  Exclude:
-    - 'lib/facter/custom_facts/util/values.rb'
-    - 'lib/facter/custom_facts/util/confine.rb'
-    - 'lib/facter/custom_facts/core/execution/windows.rb'
-    - 'lib/facter/custom_facts/core/execution/posix.rb'
-    - 'install.rb'
-    - 'lib/facter/resolvers/aix/ffi/ffi_helper.rb'
+  Enabled: false
 
 Metrics/CyclomaticComplexity:
-  Exclude:
-    - 'lib/facter/resolvers/windows/product_release.rb'
-    - 'lib/facter/custom_facts/util/values.rb'
-    - 'lib/facter/custom_facts/util/confine.rb'
-    - 'lib/facter/custom_facts/core/execution/windows.rb'
-    - 'lib/facter/custom_facts/core/execution/posix.rb'
-    - 'lib/facter/facts/linux/cloud/provider.rb'
-    - 'lib/facter/facts/windows/cloud/provider.rb'
-    - 'lib/facter/framework/detector/os_detector.rb'
-    - 'install.rb'
-    - 'scripts/generate_changelog.rb'
-    - 'lib/facter/resolvers/aix/ffi/ffi_helper.rb'
+  Enabled: false
 
 Metrics/ClassLength:
   Enabled: false

lib/facter/config.rb

@@ -44,8 +44,9 @@ module Config
           ]
         },
         {
-          'Bsd' => [
-            'Freebsd'
+          'Bsd' => %w[
+            Freebsd
+            Openbsd
           ]
         },
         'Solaris',

lib/facter/facts/openbsd/augeas/version.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Facts
+  module Openbsd
+    module Augeas
+      class Version
+        FACT_NAME = 'augeas.version'
+        ALIASES = 'augeasversion'
+
+        def call_the_resolver
+          fact_value = Facter::Resolvers::Augeas.resolve(:augeas_version)
+
+          [Facter::ResolvedFact.new(FACT_NAME, fact_value),
+           Facter::ResolvedFact.new(ALIASES, fact_value, :legacy)]
+        end
+      end
+    end
+  end
+end

lib/facter/facts/openbsd/dmi/bios/vendor.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Facts
+  module Openbsd
+    module Dmi
+      module Bios
+        class Vendor
+          FACT_NAME = 'dmi.bios.vendor'
+          ALIASES = 'bios_vendor'
+
+          def call_the_resolver
+            fact_value = Facter::Resolvers::Openbsd::DmiBios.resolve(:bios_vendor)
+            [Facter::ResolvedFact.new(FACT_NAME, fact_value), Facter::ResolvedFact.new(ALIASES, fact_value, :legacy)]
+          end
+        end
+      end
+    end
+  end
+end

lib/facter/facts/openbsd/dmi/bios/version.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Facts
+  module Openbsd
+    module Dmi
+      module Bios
+        class Version
+          FACT_NAME = 'dmi.bios.version'
+          ALIASES = 'bios_version'
+
+          def call_the_resolver
+            fact_value = Facter::Resolvers::Openbsd::DmiBios.resolve(:bios_version)
+            [Facter::ResolvedFact.new(FACT_NAME, fact_value), Facter::ResolvedFact.new(ALIASES, fact_value, :legacy)]
+          end
+        end
+      end
+    end
+  end
+end

lib/facter/facts/openbsd/dmi/manufacturer.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module Facts
+  module Openbsd
+    module Dmi
+      class Manufacturer
+        FACT_NAME = 'dmi.manufacturer'
+        ALIASES = 'manufacturer'
+
+        def call_the_resolver
+          fact_value = Facter::Resolvers::Openbsd::DmiBios.resolve(:sys_vendor)
+          [Facter::ResolvedFact.new(FACT_NAME, fact_value), Facter::ResolvedFact.new(ALIASES, fact_value, :legacy)]
+        end
+      end
+    end
+  end
+end

lib/facter/facts/openbsd/dmi/product/name.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Facts
+  module Openbsd
+    module Dmi
+      module Product
+        class Name
+          FACT_NAME = 'dmi.product.name'
+          ALIASES = 'productname'
+
+          def call_the_resolver
+            fact_value = Facter::Resolvers::Openbsd::DmiBios.resolve(:product_name)
+            [Facter::ResolvedFact.new(FACT_NAME, fact_value), Facter::ResolvedFact.new(ALIASES, fact_value, :legacy)]
+          end
+        end
+      end
+    end
+  end
+end

lib/facter/facts/openbsd/dmi/product/serial_number.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Facts
+  module Openbsd
+    module Dmi
+      module Product
+        class SerialNumber
+          FACT_NAME = 'dmi.product.serial_number'
+          ALIASES = 'serialnumber'
+
+          def call_the_resolver
+            fact_value = Facter::Resolvers::Openbsd::DmiBios.resolve(:product_serial)
+            [Facter::ResolvedFact.new(FACT_NAME, fact_value), Facter::ResolvedFact.new(ALIASES, fact_value, :legacy)]
+          end
+        end
+      end
+    end
+  end
+end

lib/facter/facts/openbsd/dmi/product/uuid.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module Facts
+  module Openbsd
+    module Dmi
+      module Product
+        class Uuid
+          FACT_NAME = 'dmi.product.uuid'
+          ALIASES = 'uuid'
+
+          def call_the_resolver
+            fact_value = Facter::Resolvers::Openbsd::DmiBios.resolve(:product_uuid)
+            [Facter::ResolvedFact.new(FACT_NAME, fact_value), Facter::ResolvedFact.new(ALIASES, fact_value, :legacy)]
+          end
+        end
+      end
+    end
+  end
+end

lib/facter/facts/openbsd/ec2_metadata.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+module Facts
+  module Openbsd
+    class Ec2Metadata
+      FACT_NAME = 'ec2_metadata'
+
+      def call_the_resolver
+        return Facter::ResolvedFact.new(FACT_NAME, nil) unless aws_hypervisors?
+
+        fact_value = Facter::Resolvers::Ec2.resolve(:metadata)
+
+        Facter::ResolvedFact.new(FACT_NAME, fact_value&.empty? ? nil : fact_value)
+      end
+
+      private
+
+      def aws_hypervisors?
+        Facter::Util::Facts::Posix::VirtualDetector.platform =~ /kvm|xen|aws/
+      end
+    end
+  end
+end