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Using exception_notifier for rake tasks or scripts
# 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" <noreply@skroutz.gr>',
:exception_recipients => 'dev@skroutz.gr',
:sections => [ 'backtrace']
}
ExceptionNotifier::Notifier.exception_notification(env, exception).deliver
raise exception
end
@fabn
fabn commented Aug 22, 2011

Does this works with this version? Where to put this code?

@gregoryp

It seems to me that you found where to put the code by the exceptions we received. :)
You should change exception_recipients to your e-mail if you like to receive the exceptions yourself.
Cheers.

@fabn
fabn commented Aug 23, 2011

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" <notifier@example.com>',
        :exception_recipients => 'notify@example.com',
        :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.

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