Failsafe: degrade user experience and notify when something goes wrong.

README.md

Failsafe

When something goes wrong I want to degrade the user experience (instead of returning a 500 - Server Error) And I want to be notified about the failure

Usage

Wrap non mission critical code:

Failsafe.failsafe do
  UnreliableApi.send_event "Signup"
end

Wrap complex partials:

<%- Failsafe.failsafe do %>
  <%= render "notifications" %>
<% end %>

Prevent side effects:

Failsafe.failsafe { log_event }
Failsafe.failsafe { notify_recipient }
Failsafe.failsafe { send_event_to_optimizely }
Failsafe.failsafe { send_event_to_kinesis }

failsafe.rb

module Failsafe
  def self.failsafe
    yield
  rescue StandardError => error
    if Rails.env.production?
      Rollbar.error error
      
      nil
    else
      raise error
    end
  end
end