Ratchetio

Ruby gem for Ratchet.io, for reporting exceptions in Rails 3 to Ratchet.io. Requires a Ratchet.io account (you can sign up for free).

Installation

Add this line to your application's Gemfile:

gem 'ratchetio'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install ratchetio

Then, run the following command from your rails root:

$ rails generate ratchetio YOUR_RATCHETIO_PROJECT_ACCESS_TOKEN

That will create the file config/initializers/ratchetio.rb, which holds the configuration values (currently just your access token) and is all you need to use Ratchet.io with Rails.

To confirm that it worked, run:

$ rake ratchetio:test

This will raise an exception within a test request; if it works, you'll see a stacktrace in the console, and the exception will appear in the Ratchet.io dashboard.

Manually reporting exceptions and messages

To report a caught exception to Ratchet, simply call Ratchetio.report_exception:

begin
  foo = bar
rescue Exception => e
  Ratchetio.report_exception(e)
end

If you're reporting an exception in the context of a request and are in a controller, you can pass along the same request and person context as the global exception handler, like so:

begin
  foo = bar
rescue Exception => e
  Ratchetio.report_exception(e, ratchetio_request_data, ratchetio_person_data)
end

You can also log individual messages:

# logs at the 'warning' level. all levels: debug, info, warning, error, critical
Ratchetio.report_message("Unexpected input", "warning")

# default level is "info"
Ratchetio.report_message("Login successful")

# can also include additional data as a hash in the final param. :body is reserved.
Ratchetio.report_message("Login successful", "info", :user => @user)

Person tracking

Ratchet will send information about the current user (called a "person" in Ratchet parlance) along with each error report, when available. This works by calling the current_user controller method. The return value should be an object with an id method and, optionally, username and email methods.

If the gem should call a controller method besides current_user, add the following in config/initializers/ratchetio.rb:

  config.person_method = "my_current_user"

If the methods to extract the id, username, and email from the object returned by the person_method have other names, configure like so in config/initializers/ratchetio.rb:

  config.person_id_method = "user_id"  # default is "id"
  config.person_username_method = "user_name"  # default is "username"
  config.person_email_method = "email_address"  # default is "email"

Exception level filters

By default, all exceptions reported through Ratchetio.report_exception() are reported at the "error" level, except for the following, which are reported at "warning" level:

• ActiveRecord::RecordNotFound
• AbstractController::ActionNotFound
• ActionController::RoutingError

If you'd like to customize this list, see the example code in config/initializers/ratchetio.rb. Supported levels: "critical", "error", "warning", "info", "debug", "ignore". Set to "ignore" to cause the exception not to be reported at all.

Asynchronous reporting

By default, all messages are reported synchronously. You can enable asynchronous reporting by adding the following in config/initializers/ratchetio.rb:

  config.use_async = true

Ratchet uses girl_friday to handle asynchronous reporting when installed, and falls back to Threading if girl_friday is not installed.

You can supply your own handler using config.async_handler. The handler should schedule the payload for later processing (i.e. with a delayed_job, in a resque queue, etc.) and should itself return immediately. For example:

  config.async_handler = Proc.new { |payload|
    Thread.new { Ratchetio.process_payload(payload) }
  }

Make sure you pass payload to Ratchetio.process_payload in your own implementation.

Using with ratchet-agent

For even more asynchrony, you can configure the gem to write to a file instead of sending the payload to Ratchet servers directly. ratchet-agent can then be hooked up to this file to actually send the payload across. To enable, add the following in config/initializers/ratchetio.rb:

  config.write_to_file = true
  # optional, defaults to "#{AppName}.ratchet"
  config.filepath = '/path/to/file.ratchet' #should end in '.ratchet' for use with ratchet-agent

For this to work, you'll also need to set up ratchet-agent--see its docs for details.

Using with Goalie

If you're using Goalie for custom error pages, you may need to explicitly add require 'goalie' to config/application.rb (in addition to require goalie/rails) so that the monkeypatch will work. (This will be obvious if it is needed because your app won't start up: you'll see a cryptic error message about Goalie::CustomErrorPages.render_exception not being defined.)

Help / Support

If you run into any issues, please email us at [email protected]

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

We're using RSpec for testing. Run the test suite with rake spec. Tests for pull requests are appreciated but not required. (If you don't include a test, we'll write one before merging.)