- Create, Read, Update, Delete - Objects, within their canonical collection
- Add, Move, Remove - Objects in a collection
- Post activities to an outbox
- Creating an object adds it to its canonical collection
- Deleting an object turns it into a Tombstone, though it can still be removed from it's canonical collection
- Updating an object changes it's canonical representation
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You can add an object to a collection
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You can remove an object from a collection
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You can move an object from one collection to another
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You cannot move or remove an object from its canonical collection
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Adding an object to a collection that doesn't already exist creates that collection
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User collections are represented as objects in the user's ./collections collection
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Some collections are 'global'
- /users - all users
- /collections - all global and prototype collections
- /rules - rules for processing activities
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Some collections are 'prototypes', they define common collections:
- /{user}/inbox
- /{user}/outbox
- /{user}/collections
- /{user}/groups
- Modifying objects cannot be done unless the user is part of the "attributedTo" set, or an object up the hierarchy, or has a matching group entry
- Reading is similarly guarded by "attributedTo" or "audience"
- Collection activities (add, move, remove) likewise check the collection's object
- An actor can add activities to their outbox which will then be processed
- Processed activities are run against all rules
- Activities can fail, in which case they are turned into a Tombstone
