(FACT-2752) Added serialnumber fact for AIX

lib/facter/facts/aix/serialnumber.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Facts
+  module Aix
+    class Serialnumber
+      FACT_NAME = 'serialnumber'
+      TYPE = :legacy
+
+      def call_the_resolver
+        Facter::ResolvedFact.new(FACT_NAME, fact_value, :legacy)
+      end
+
+      private
+
+      def fact_value
+        Facter::Resolvers::Aix::Serialnumber.resolve(:serialnumber)
+      end
+    end
+  end
+end

lib/facter/resolvers/aix/serialnumber.rb

@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+module Facter
+  module Resolvers
+    module Aix
+      class Serialnumber < BaseResolver
+        @semaphore = Mutex.new
+        @fact_list ||= {}
+
+        class << self
+          private
+
+          def post_resolve(fact_name)
+            @fact_list.fetch(fact_name) { read_serialnumber(fact_name) }
+          end
+
+          def read_serialnumber(fact_name)
+            odmquery = Facter::ODMQuery.new
+            odmquery
+              .equals('name', 'sys0')
+              .equals('attribute', 'systemid')
+            result = odmquery.execute
+
+            result.each_line do |line|
+              if line.include?('value')
+                @fact_list[:serialnumber] = line.split('=')[1].strip.delete('\"')[6..-1]
+                break
+              end
+            end
+
+            @fact_list[fact_name]
+          end
+        end
+      end
+    end
+  end
+end

spec/facter/facts/aix/serialnumber_spec.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+describe Facts::Aix::Serialnumber do
+  describe '#call_the_resolver' do
+    subject(:fact) { Facts::Aix::Serialnumber.new }
+
+    let(:value) { '21684EW' }
+
+    before do
+      allow(Facter::Resolvers::Aix::Serialnumber).to receive(:resolve).with(:serialnumber).and_return(value)
+    end
+
+    it 'calls Facter::Resolvers::Aix::Serialnumber' do
+      fact.call_the_resolver
+      expect(Facter::Resolvers::Aix::Serialnumber).to have_received(:resolve).with(:serialnumber)
+    end
+
+    it 'returns serialnumber fact' do
+      expect(fact.call_the_resolver).to be_an_instance_of(Facter::ResolvedFact).and \
+        have_attributes(name: 'serialnumber', value: value, type: :legacy)
+    end
+  end
+end

spec/facter/resolvers/aix/serialnumber_spec.rb

@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+describe Facter::Resolvers::Aix::Serialnumber do
+  describe '#resolve' do
+    before do
+      odm = instance_spy('Facter::ODMQuery')
+
+      allow(Facter::ODMQuery).to receive(:new).and_return(odm)
+      allow(odm).to receive(:equals).with('name', 'sys0').and_return(odm)
+      allow(odm).to receive(:equals).with('attribute', 'systemid')
+      allow(odm).to receive(:execute).and_return(result)
+    end
+
+    after do
+      Facter::Resolvers::Aix::Serialnumber.invalidate_cache
+    end
+
+    context 'when line contains value' do
+      let(:result) { 'value = "IBM,0221684EW"' }
+
+      it 'detects serialnumber' do
+        expect(Facter::Resolvers::Aix::Serialnumber.resolve(:serialnumber)).to eql('21684EW')
+      end
+    end
+
+    context 'when line does not include value key' do
+      let(:result) { 'test = IBM,0221684EW' }
+
+      it 'detects serialnumber as nil' do
+        expect(Facter::Resolvers::Aix::Serialnumber.resolve(:serialnumber)).to be(nil)
+      end
+    end
+
+    context 'when fails to retrieve fact' do
+      let(:result) { nil }
+
+      it 'detects serialnumber as nil' do
+        expect(Facter::Resolvers::Aix::Serialnumber.resolve(:serialnumber)).to be(nil)
+      end
+    end
+  end
+end