Add procedure to remove corrupted host statuses

Author: sbernhard

definitions/procedures/foreman/remove_corrupted_host_statuses.rb

@@ -0,0 +1,43 @@
+module Procedures::Foreman
+  class RemoveCorruptedHostStatuses < ForemanMaintain::Procedure
+    metadata do
+      for_feature :foreman_database
+      description 'Remove corrupted host statuses'
+    end
+
+    def run
+      corrupted = collect_host_status_with_type_nil
+      if corrupted.empty?
+        skip("No corrupted host status. Everything fine. Exit.")
+      end
+
+      print("Detected corrupted host statuses:\n")
+      corrupted.each do |s|
+        print("Host #{s['host_name']} has corrupted host_status with id #{s['host_status_id']}\n")
+      end
+
+      answer = ask_decision("Do you want to remove the empty host statuses", actions_msg: 'y(yes), q(quit)')
+      abort! unless answer == :yes
+
+      with_spinner('Removing corrupted host statuses') do
+        delete_host_status_with_type_nil
+      end
+    end
+
+    private
+
+    def collect_host_status_with_type_nil
+      feature(:foreman_database).query(
+        "SELECT hosts.name AS host_name, host_status.id AS host_status_id 
+         FROM hosts, host_status 
+         WHERE host_status.type IS NULL AND hosts.id = host_status.host_id"
+      )
+    end
+
+    def delete_host_status_with_type_nil
+      feature(:foreman_database).psql(
+        "DELETE FROM host_status WHERE type IS NULL"
+      )
+    end
+  end
+end