Re: Followups from today's CG call for LOLA

Lisa,

How would you feel about a `Copy` activity? I think that matches what 
you're proposing better than `Import`.

Let's say you wanted to make a copy of this object, a private note to 
the old user's followers:

{
   "@context": [
       "https://www.w3.org/ns/activitystreams",
       "https://namespace.example/ns/copy"
   ],
   "id":"https://source.example/user/olduser/note/1",
   "attributedTo":"https://source.example/user/olduser",
   "to":"https://source.example/user/olduser/followers",
   "type": "Note",
   "content": "Hello World"
}

The activity to make a copy might look like this:

{
   "@context": [
       "https://www.w3.org/ns/activitystreams",
       "https://namespace.example/ns/copy"
   ],
   "id":"https://destination.example/user/newuser/copy/1",
   "actor":"https://destination.example/user/newuser",
   "to": ["https://source.example/user/olduser",
 "https://source.example/user/olduser/followers",
          "https://source.example/user/newuser/followers"]
   "type": ["Copy", "Create"],
   "origin":"https://source.example/user/olduser/note/1",
   "object":"https://destination.example/user/newuser/note/5"
}

This format lets us identify the new note as a copy. I've used `origin` 
to say where the object came from, and `object` for the destination. 
Using these properties, I can dual-type the activity so it works as both 
a `Copy` and a `Create` for fallback. A client that only recognizes the 
`Create` activity type will do the right thing with this activity.

Note that the addressees are different; the new Copy activity is 
addressed to the old user, to the the old user's followers, and to the 
new user's followers.

The resulting note might look something like this:

{
   "@context": [
       "https://www.w3.org/ns/activitystreams",
       "https://namespace.example/ns/copy"
   ],
   "id":"https://destination.example/user/newuser/note/5",
   "attributedTo":"https://destination.example/user/newuser",
   "to": ["https://source.example/user/olduser",
 "https://source.example/user/olduser/followers",
          "https://source.example/user/newuser/followers"],
   "type": "Note",
   "content": "Hello World",
   "copyOf":"https://source.example/user/olduser/note/1"
}

The original note might also be changed to include a list of all the copies:

{
   "@context": [
       "https://www.w3.org/ns/activitystreams",
       "https://namespace.example/ns/copy"
   ],
   "id":"https://source.example/user/olduser/note/1",
   "attributedTo":"https://source.example/user/olduser",
   "to":"https://source.example/user/olduser/followers",
   "type": "Note",
   "content": "Hello World",
   "copies": [
     "https://destination.example/user/newuser/note/5"
   ]
}

Evan

On 2024-05-03 4:01 p.m., Lisa Dusseault wrote:
> Here are my followups from today's call.  Note the first one allows 
> folks to have a peek at LOLA as it stands even before the PR is 
> merged, but you might also wait for the next version after I work on 
> the issues listed below.
>
> 1. Create a PR for EvanP:  Done
> * https://github.com/swicg/activitypub-data-portability/pull/16
>
> 2. Add a section that explains how to copy from the outbox to handle 
> “unaugmented” source servers
> https://github.com/swicg/activitypub-data-portability/issues/17
>
> 3. Do more work on use cases to motivate the choices  especially make 
> sure the support for defederation is explained and what that means for 
> content copy models
> https://github.com/swicg/activitypub-data-portability/issues/19
>
> 4. Suggestion to have a new "Import" activity: *I'd love more 
> feedback*.  Is anybody in a position to be able to create a wrapper of 
> type "Import" around content of type "Note" and test that out in the 
> context of an outbox?
>  * if this works, it can be used for importing content through other 
> mechanisms besides LOLA.
>
> 5.  Add to the spec that there are legitimate use cases to BLOCK 
> accounts from export or move - e.g. in the case of CSAM reports
> https://github.com/swicg/activitypub-data-portability/issues/18
>
> Lisa