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Broadcaster

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Motivations and principles

Broadcaster is an engine keeping track of your user's publications campaigns and subscriptions. Each publication campaign should belong to a publisher, and each subscription should belong to a subscriber.

The subscriber will therefore have access to the publication campaigns he / she has subscribed to, through its subscriptions.

Any subscription is accessible via a unique unsubscribe_token, and can be deactivated (or reactivated).

Installation

Add this line to your application's Gemfile:

gem 'broadcaster'

And then execute:

$ bundle

Or install it yourself as:

$ gem install broadcaster

On a rails application, execute rake db:migrate to create the broadcaster tables.

Then include the following modules to plug Broadcaster::Subscription or Broadcaster::Campaign to any publisher or subscriber:

class MyPublisher
  acts_as_broadcaster_publisher

  ...
end
class MySubscriber
  acts_as_broadcaster_subscriber

  ...
end

Usage

Access a publisher's broadcaster_campaigns:

my_publisher = MyPublisher.find(...)

my_publisher.broadcaster_campaigns
# => [#<Broadcaster::Campaign ...>, ...]

Or a subscriber's broadcaster_subscriptions:

my_subscriber = MySubscriber.find(...)

my_subscriber.broadcaster_subscriptions
# => [#<Broadcaster::Subscription ...>, ...]

Access the subscriptions of a campaign:

campaign = Broadcaster::Campaign.find(...)

subscriptions = campaign.broadcaster_subscriptions
active_subscriptions = campaign.broadcaster_subscriptions.active

Given a subscription, access its publication campaign:

subscription = Broadcaster::Subscription.find(...)

subscription.broadcaster_campaign

Deactivate a subscription:

subscription = Broadcaster::Subscription.find(...)

subscription.deactivate

Or activate a subscription:

subscription = Broadcaster::Subscription.find(...)

subscription.activate

GraphQL API

Broadcaster exposes its campaigns and subscriptions types in a GraphQL API. You can use them directly in your subscriber or publisher types.

API Configuration

To set the public names of your broadcaster_campaigns and broadcaster_subscriptions in the GraphQL API, proceed as follow:

# config/initializers/broadcaster.rb
Broadcaster.configure do |config|
  config.graphql_broadcaster_campaign_name = 'MyCustomCampaignName'
  config.graphql_broadcaster_subscription_name = 'MyCustomSubscriptionName'
end

To avoid letting your client know the dependency, default names are Campaign and Subscription

API usage

# app/graphql/types/subscriber_type.rb
  field :subscriptions,
        types[!Types::Broadcaster::SubscriptionType],
        'The subscriptions of the user',
        property: :broadcaster_subscriptions
# app/graphql/types/publisher_type.rb
  field :campaigns,
        types[!Types::Broadcaster::CampaignType],
        'The publication campaigns of the user',
        property: :broadcaster_campaigns

API Development

Broadcaster is equiped with the GraphiQL engine, to let you test your queries in your local environment. To access graphiql, make sure the migrations passed (rake db:migrate).

Then go to spec/dummy. Run the migrations to have the user table inside your dummy app: (rake db:migrate).

Then launch your dummy server: rails s -p 3444

You can access graphiql by visiting: localhost:3444/graphiql

Happy coding !

Query Sample

# query
query User($id: Int!) {
  user(id: $id) {
    campaigns {
      label
      uuid
      subscriptions {
        active   
        uuid
      }
      subscriptionsCount
    }
    subscriptions {
      active
    }
    id
  }
}
# results
{
  "data": {
    "user": {
      "campaigns": [
        {
          "label": "test",
          "uuid": "094cb361-c894-4cf7-ad24-0df317b72b13",
          "subscriptions": [
            {
              "active": true,
              "uuid": "5478ce4c-f982-4251-ba5c-bb625dc4fd9d"
            },
            {
              "active": true,
              "uuid": "bf970c85-0ebb-4cf3-bb86-800591ea2153"
            }
          ],
          "subscriptionsCount": 2
        },
        {
          "label": "post_launch",
          "uuid": "2786c3af-2b80-4cf8-bff4-af9426d5ad7b",
          "subscriptions": [
            {
              "active": false,
              "uuid": "7921547f-bf3d-4273-917f-24209b3cdc61"
            },
            {
              "active": true,
              "uuid": "77860011-e16a-486b-9245-2b9e3db34b1f"
            }
          ],
          "subscriptionsCount": 2
        }
      ],
      "subscriptions": [],
      "id": 1
    }
  }
}

Development

After checking out the repo, run bundle install to install dependencies. Create the broadcaster tables with bundle exec rake db:create, then bundle exec rake db:migrate to launch the migrations. Run bundle exec rspec spec to run the tests.

To test the plugged engine, move to cd spec/dummy and create the user table with bundle exec rake db:migrate. Run rails c for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

To ensure specs and linter validity, before opening your pull request run $ safepush test lint push open

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/KissKissBankBank/broadcaster. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the Broadcaster project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.

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