lemmy/lemmy_apub/src/fetcher/user.rs
Dessalines c6357f3c86
Deletion on fetch (#1345)
* Delete local object on fetch when receiving HTTP 410, split fetcher (fixes #1256)

* Removing submodules

* Trying to re-init submodule

* Trying to re-init submodule 2

* Trying to re-init submodule 3

* Logging line.

* Removing submodules

* Adding again.

* Adding again 2.

* Adding again 3.

* Adding again 4.

* Adding again 5.

* Adding again 6.

* Adding again 7.

* Adding again 8.

* Adding again 9.

* Add more clippy lints, remove dbg!() statement

* Adding again 10.

* Adding again 11.

* Adding again 12.

Co-authored-by: Felix Ableitner <me@nutomic.com>
2021-01-12 11:12:41 -05:00

71 lines
2.2 KiB
Rust

use crate::{
fetcher::{fetch::fetch_remote_object, is_deleted, should_refetch_actor},
objects::FromApub,
PersonExt,
};
use anyhow::anyhow;
use diesel::result::Error::NotFound;
use lemmy_db_queries::{source::user::User, ApubObject};
use lemmy_db_schema::source::user::User_;
use lemmy_structs::blocking;
use lemmy_utils::LemmyError;
use lemmy_websocket::LemmyContext;
use log::debug;
use url::Url;
/// Get a user from its apub ID.
///
/// If it exists locally and `!should_refetch_actor()`, it is returned directly from the database.
/// Otherwise it is fetched from the remote instance, stored and returned.
pub(crate) async fn get_or_fetch_and_upsert_user(
apub_id: &Url,
context: &LemmyContext,
recursion_counter: &mut i32,
) -> Result<User_, LemmyError> {
let apub_id_owned = apub_id.to_owned();
let user = blocking(context.pool(), move |conn| {
User_::read_from_apub_id(conn, apub_id_owned.as_ref())
})
.await?;
match user {
// If its older than a day, re-fetch it
Ok(u) if !u.local && should_refetch_actor(u.last_refreshed_at) => {
debug!("Fetching and updating from remote user: {}", apub_id);
let person =
fetch_remote_object::<PersonExt>(context.client(), apub_id, recursion_counter).await;
if is_deleted(&person) {
// TODO: use User_::update_deleted() once implemented
blocking(context.pool(), move |conn| {
User_::delete_account(conn, u.id)
})
.await??;
return Err(anyhow!("User was deleted by remote instance").into());
} else if person.is_err() {
return Ok(u);
}
let user = User_::from_apub(&person?, context, apub_id.to_owned(), recursion_counter).await?;
let user_id = user.id;
blocking(context.pool(), move |conn| {
User_::mark_as_updated(conn, user_id)
})
.await??;
Ok(user)
}
Ok(u) => Ok(u),
Err(NotFound {}) => {
debug!("Fetching and creating remote user: {}", apub_id);
let person =
fetch_remote_object::<PersonExt>(context.client(), apub_id, recursion_counter).await?;
let user = User_::from_apub(&person, context, apub_id.to_owned(), recursion_counter).await?;
Ok(user)
}
Err(e) => Err(e.into()),
}
}