Checking if test failed and giving console output accordingly

I am new to ruby and would like to add a step in my ruby/capybara test where "if test failed, log this message in the console: "Microservice A is currently down."

Should this be done in the after hook or inside the test. Also, what would the commands be?

after (:each) do
logout
if test = fail do
     console.log ("Error: Microservice A is currently down")
end
end

Thank you