Subscription keys
Describes the subscription keys for the User Notifications framework used for sending user-to-user notification messages in Optimizely Content Management System (CMS).
This API supports storing a link between a key and a user. You can then later use the API to get a list of users subscribing to a key. A key can be anything you want formatted as a URI.
Access the API by getting an instance of the ISubscriptionService
interface lets you subscribe or unsubscribe a user and find users that subscribe to a particular key.
This API is just a supporting service, and subscriptions are independent of user notifications; no calls are made from one to the other. That means you must use the subscriptions API to populate the recipient field when creating a notification message because an event happened in the system. If the sender is also a subscriber, you may have to filter the list before sending the message to avoid the person triggering the event also getting notified.
Subscription keys
A subscription key is in URI format and identifies something that can be notified. The format is unconstrained but should match the item it identifies.
The subscription key indicates that the user is interested in that item and the items below it, which are items with a key that starts with the subscribed key.
Subscribe and unsubscribe
Use the SubscribeAsync
methods to add one or more users to a subscription.
Use the UnsubscribeAsync
 method to remove one or more users from a subscription.
You can hook into the UserSubscribed
and UserUnsubscribed
events. They are only triggered for changes. If a user is added to a subscription twice, it only triggers for the first.
Clear
By calling ClearUserAsync
, subscriptions for that user are removed so use it only when you delete a user from the system. The ClearSubscriptionAsync
 method removes users from that particular subscription. The UserCleared
and SubscriptionCleared
 events are called for these respectively.
List subscriptions
ListSubscriptionsAsync
returns a list of subscriptions for a user.
List and find subscribers
ListSubscribersAsync
returns a list of users that subscribe to a specified subscription. The FindSubscribersAsync
 method returns users that match a subscription key, fully and partly (begins-with).
Note
The partly matching is done on whole segments (delimited by slashes) in the URI path.
Updated 9 months ago