Barebones standalone Ruby app with AppSignal

app.rb

require "appsignal"

ENV['APPSIGNAL_ACTIVE'] = "true"
ENV['APPSIGNAL_APP_NAME'] = "Standalone app"
ENV['APPSIGNAL_APP_ENV'] = "development"
ENV['APPSIGNAL_PUSH_API_KEY'] = raise "Provide push api key"

Appsignal.start_logger
Appsignal.start

Appsignal.monitor_single_transaction(
  "perform_job.custom",
  :class => "Test",
  :method => 'run'
) do
  Appsignal.instrument 'event' do
    sleep 5
  end
end

Gemfile

source 'https://rubygems.org'

gem "appsignal"