refacter: renamed facts to libs

modules/libs/lib/facter/mariadb_datapath.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+# check if the /etc/my.cnf.d/server.cnf file exists,
+# open it and search for the 'datadir =' option
+# store the datadir value as this fact
+require 'facter'
+
+Facter.add('mariadb_datapath') do
+  setcode do
+    if File.exist?('/etc/my.cnf.d/server.cnf')
+      datadir = nil
+      File.foreach('/etc/my.cnf.d/server.cnf') do |line|
+        match = line.match(/^\s*datadir\s*=\s*(.+)\s*$/)
+        if match
+          datadir = match[1].strip
+          break
+        end
+      end
+      datadir
+    end
+  end
+end