lemmy/crates/apub/src/fetcher/mod.rs
phiresky 375d9a2a3c
Persistent, performant, reliable federation queue (#3605)
* persistent activity queue

* fixes

* fixes

* make federation workers function callable from outside

* log federation instances

* dead instance detection not needed here

* taplo fmt

* split federate bin/lib

* minor fix

* better logging

* log

* create struct to hold cancellable task for readability

* use boxfuture for readability

* reset submodule

* fix

* fix lint

* swap

* remove json column, use separate array columns instead

* some review comments

* make worker a struct for readability

* minor readability

* add local filter to community follower view

* remove separate lemmy_federate entry point

* fix remaining duration

* address review comments mostly

* fix lint

* upgrade actitypub-fed to simpler interface

* fix sql format

* increase delays a bit

* fixes after merge

* remove selectable

* fix instance selectable

* add comment

* start federation based on latest id at the time

* rename federate process args

* dead instances in one query

* filter follow+report activities by local

* remove synchronous federation

remove activity sender queue

* lint

* fix federation tests by waiting for results to change

* fix fed test

* fix comment report

* wait some more

* Apply suggestions from code review

Co-authored-by: SorteKanin <sortekanin@gmail.com>

* fix most remaining tests

* wait until private messages

* fix community tests

* fix community tests

* move arg parse

* use instance_id instead of domain in federation_queue_state table

---------

Co-authored-by: Dessalines <dessalines@users.noreply.github.com>
Co-authored-by: SorteKanin <sortekanin@gmail.com>
2023-09-09 12:25:03 -04:00

65 lines
1.9 KiB
Rust

use activitypub_federation::{
config::Data,
fetch::webfinger::webfinger_resolve_actor,
traits::{Actor, Object},
};
use diesel::NotFound;
use itertools::Itertools;
use lemmy_api_common::context::LemmyContext;
use lemmy_db_schema::traits::ApubActor;
use lemmy_db_views::structs::LocalUserView;
use lemmy_utils::error::LemmyError;
pub mod post_or_comment;
pub mod search;
pub mod site_or_community_or_user;
pub mod user_or_community;
/// Resolve actor identifier like `!news@example.com` to user or community object.
///
/// In case the requesting user is logged in and the object was not found locally, it is attempted
/// to fetch via webfinger from the original instance.
#[tracing::instrument(skip_all)]
pub async fn resolve_actor_identifier<ActorType, DbActor>(
identifier: &str,
context: &Data<LemmyContext>,
local_user_view: &Option<LocalUserView>,
include_deleted: bool,
) -> Result<ActorType, LemmyError>
where
ActorType: Object<DataType = LemmyContext, Error = LemmyError>
+ Object
+ Actor
+ From<DbActor>
+ Send
+ 'static,
for<'de2> <ActorType as Object>::Kind: serde::Deserialize<'de2>,
DbActor: ApubActor + Send + 'static,
{
// remote actor
if identifier.contains('@') {
let (name, domain) = identifier
.splitn(2, '@')
.collect_tuple()
.expect("invalid query");
let actor = DbActor::read_from_name_and_domain(&mut context.pool(), name, domain).await;
if actor.is_ok() {
Ok(actor?.into())
} else if local_user_view.is_some() {
// Fetch the actor from its home instance using webfinger
let actor: ActorType = webfinger_resolve_actor(&identifier.to_lowercase(), context).await?;
Ok(actor)
} else {
Err(NotFound.into())
}
}
// local actor
else {
let identifier = identifier.to_string();
Ok(
DbActor::read_from_name(&mut context.pool(), &identifier, include_deleted)
.await?
.into(),
)
}
}