Using Ember Services in Discourse plugins

Ember 1.13 does support them (I think), the tutorial I linked to says it’s for 1.13.

Maybe you can help me come up with a “Discourse-y” way of doing what I need that doesn’t use services. I’m trying to create a “who’s online” widget which will use the messagebus to be live-updated. I can make an ember “Component” which handles the UI, but I somehow need to get the array of users to be updated whenever a new message is received on the messagebus. Note that the component might be created/destroyed based on the current page that the user is viewing (I think). My plan was to have the singleton service manage the data, and then “bind” it to a field in the component.

I’m very new to Ember so sorry if this is a stupid question!