Using exception_notifier for rake tasks or scripts

exception_notify_helper.rb

# Exception notifier (rails3) only works as a rack middleware,
# but what if you need notifications inside a rake task or a script?
# This is a quick hack around that.
#
# Wrap your code inside an exception_notify block and you will be notified of exceptions
#
# exception_notify { clear_payments }
def exception_notify
  yield
rescue Exception => exception
  env = {}
  env['exception_notifier.options'] = { 
    :email_prefix => '[Exception] ',
    :sender_address => '"R2D2" <[email protected]>',
    :exception_recipients => '[email protected]',
    :sections => [ 'backtrace']
  }
  ExceptionNotifier::Notifier.exception_notification(env, exception).deliver
  raise exception
end

Yes, excuse me for the exception message ;-)

For the answer, I put the code inside my task namespace as in:

namespace :your_namespace do
  def exception_notify
    yield
  rescue Exception => exception
    env = {}
    env['exception_notifier.options'] = {
        :email_prefix => '[Exception] ',
        :sender_address => '"Exception notifier" <[email protected]>',
        :exception_recipients => '[email protected]',
        :sections => ['backtrace']
    }
    ExceptionNotifier::Notifier.exception_notification(env, exception).deliver
    raise exception
  end

  desc "Your task description"
  task :your_task => :environment do
    exception_notify { task_actual_code }
  end
end

I posted a question on Stack Overflow about this, if you want to join the discussion you're welcome.