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Contributing

GitHub will accept service hooks for the following types of services:

  • Production web applications
  • Popular internet protocols (Email, IRC, etc).

In order to provide quality service and support for our users, we require the following:

  • Implement endpoints that take the new payload, completely unmodified.
    • Good example: Simperium has minimal logic (just config parameters, an HTTP header, and a custom url).
    • Bad example: CodeClimate uses the old payload format.
    • Bad Example: Campfire modifies the payload to make multiple calls to the Campfire service.
  • Thorough documentation about what the hook does, and what the options do.
  • Tested code that works. If we have to make changes to the Services infrastructure, it helps a lot to have passing tests so we know we're not breaking things.

Any new hooks that don't meet the above criteria will be rejected.

We'd also like the following information to help provide quality service and support to our users:

  • A URL for the service (if applicable).
  • A URL to a logo for the service (png or gif preferred).
  • A maintainer. Someone that GitHub can contact in the event of bugs. We prefer GitHub users, so that we can file issues directly to the github/github-services Repository.
  • A support contact for our users that have problems. This can be a GitHub user, an email address, or link to a contact form.

If we need support from any hooks without this data, we will look for the most active contributor to the hook file itself.

You can annotate this directly in the hook like so:

class Service::MyService < Service
  string :project, :api_token

  # only include 'project' in the debug logs, skip the api token.
  white_list :project

  default_events :push, :issues, :pull_request

  url "http://myservice.com"
  logo_url "http://myservice.com/logo.png"

  # Technoweenie on GitHub is pinged for any bugs with the Hook code.
  maintained_by :github => 'technoweenie'

  # Support channels for user-level Hook problems (service failure,
  # misconfigured
  supported_by :web => 'http://my-service.com/support',
    :email => 'support@my-service.com'
end

You can annotate Supporters and Maintainers by the following methods:

  • :github - a GitHub login.
  • :web - A URL to a contact form.
  • :email - An email address.
  • :twitter - A Twitter handle.

How to test your service

You can test your service in a ruby irb console:

  1. Cache gems and install them to vendor/gems by doing: script/bootstrap
  2. Start a console: script/console
  3. Instantiate your Service:

    svc = Service::MyService.new(:push,
      # Hash of configuration information.
      {'token' => 'abc'},
      # Hash of payload.
      {'blah' => 'payload!'})
    
    svc.receive_push
    
  4. The third argument is optional if you just want to use the sample payload.

    svc = Service::MyService.new(:push,
      # Hash of configuration information.
      {'token' => 'abc'})
    
    svc.receive_push
    

Other hook types

The default hook for a service is push. You may wish to have services respond to other event types, like pull_request or issues. The full list may be found in service.rb. Unless your service specifies default_events <list_of_types>, only the push hook will be called, see service.rb#default_events.

To make use of these additional types, your service will either need to define receive_<type> (like receive_pull_request_review_comment) or a generic receive_event.

You can read more about the Hooks in the API Documentation.

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