Learning Rust and Lemmy

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A collaborative space for people to work together on learning Rust, learning about the Lemmy code base, discussing whatever confusions or difficulties we're having in these endeavours, and solving problems, including, hopefully, some contributions back to the Lemmy code base.

Rules TL;DR: Be nice, constructive, and focus on learning and working together on understanding Rust and Lemmy.

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This is a place to learn and work together.
Questions and curiosity is welcome and encouraged.
This isn't a technical support community. Those with technical knowledge and experienced aren't obliged to help, though such is very welcome. This is closer to a library of study groups than stackoverflow. Though, forming a repository of useful information would be a good side effect.
This isn't an issue tracker for Lemmy (or Rust) or a place for suggestions. Instead, it's where the nature of an issue, what possible solutions might exist and how they could be or were implemented can be discussed, or, where the means by which a particular suggestion could be implemented is discussed.

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Lemmy.ml rule 2 applies strongly: "Be respectful, even when disagreeing. Everyone should feel welcome" (see Dessalines's post). This is a constructive space.
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See the Lemmy Code of Conduct
Where applicable, rules should be interpreted in light of the Policies and Purposes.

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founded 9 months ago

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Lemmy's ActivityPub activities (self.learningrustandlemmy)

submitted 9 months ago* (last edited 9 months ago) by freamon to c/[email protected]

26 comments fedilink hide all child comments

I'll reply in the comments with a example of what lemmy sends for each thing you can do (I think I've thought of everything, but you can probably guess the format if not, or I can always add it).

So, the setup for these is:
Our instance is called 'local.com'
Our user is called 'freamon'
The other instance is called 'remote.com'
The community on that instance is called 'interesting'

For many of these, remote.com will receive them, and rewraps them in an Announce to send out to all the other instances with a copy of the community, so everyone stays in sync.

Sort by 'Old' for the best hope of these making sense.
I'll follow this post up with a script, that can be used to send these activities from the command-line, as I think it can help to understand Lemmy if you're using something much simpler than Lemmy to do some of things Lemmy does.

EDIT: As nutomic as mentioned, a better list is in the docs. It's the kind of thing I should read first, I guess.

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[–] freamon 1 points 9 months ago (2 children)

freamon subscribes to the interesting community
The subscription status changes to 'pending'

{
  "@context": [
    "https://join-lemmy.org/context.json",
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "https://local.com/u/freamon",
  "to": [
    "https://remote.com/c/interesting"
  ],
  "object": "https://remote.com/c/interesting",
  "type": "Follow",
  "id": "https://local.com/activities/follow/5cc358b8-9eae-49ef-8b5c-05d98504bda1"
}

[–] freamon 1 points 9 months ago

freamon changes his mind. He doesn't want to subscribe anymore

{
  "@context": [
    "https://join-lemmy.org/context.json",
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "https://local.com/u/freamon",
  "to": [
    "https://remote.com/c/interesting"
  ],
  "object": {
    "actor": "https://local.com/u/freamon",
    "to": [
      "https://remote.com/c/interesting"
    ],
    "object": "https://remote.com/c/interesting",
    "type": "Follow",
    "id": "https://local.com/activities/follow/c934a27e-0dad-4641-85f5-a83e04d672a4"
  },
  "type": "Undo",
  "id": "https://local.com/activities/undo/a9047cfc-ed0e-49c2-86da-9a0b3dbdc463"
}

Note 1: lemmy expects these 'id' fields to be unique, so the encapulated 'Follow' isn't the same as the one that was sent.
Note 2: lemmy also sends a Undo/Follow if you block a community

[–] freamon 1 points 9 months ago

The interesting community accepts freamon's subscription request
The subscription status changes to 'joined'

{
  "actor": "https://remote.com/c/interesting",
  "to": "https://local.com/u/freamon",
  "object": {
    "actor": "https://local.com/u/freamon",
    "to": null,
    "object": "https://remote.com/c/interesting",
    "type": "Follow",
    "id": "https://local.com/activities/follow/c66515bd-6f81-44e0-8af9-c4c4ae307051"
  },
  "type": "Accept",
  "id": "https://remote.com/activities/accept/4ca771e6-0213-478a-83ba-d957984b98c5"
}