92 lines
2.7 KiB
Rust
92 lines
2.7 KiB
Rust
use crate::{
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objects::{community::ApubCommunity, post::ApubPost},
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protocol::collections::group_featured::GroupFeatured,
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};
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use activitypub_federation::{
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config::Data,
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kinds::collection::OrderedCollectionType,
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protocol::verification::verify_domains_match,
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traits::{ActivityHandler, Collection, Object},
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};
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use futures::future::{join_all, try_join_all};
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use lemmy_api_common::{context::LemmyContext, utils::generate_featured_url};
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use lemmy_db_schema::{source::post::Post, utils::FETCH_LIMIT_MAX};
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use lemmy_utils::error::LemmyError;
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use url::Url;
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#[derive(Clone, Debug, PartialEq)]
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pub(crate) struct ApubCommunityFeatured(());
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#[async_trait::async_trait]
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impl Collection for ApubCommunityFeatured {
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type Owner = ApubCommunity;
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type DataType = LemmyContext;
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type Kind = GroupFeatured;
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type Error = LemmyError;
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async fn read_local(
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owner: &Self::Owner,
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data: &Data<Self::DataType>,
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) -> Result<Self::Kind, Self::Error> {
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let ordered_items = try_join_all(
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Post::list_featured_for_community(&mut data.pool(), owner.id)
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.await?
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.into_iter()
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.map(ApubPost::from)
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.map(|p| p.into_json(data)),
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)
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.await?;
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Ok(GroupFeatured {
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r#type: OrderedCollectionType::OrderedCollection,
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id: generate_featured_url(&owner.actor_id)?.into(),
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total_items: ordered_items.len() as i32,
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ordered_items,
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})
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}
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async fn verify(
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apub: &Self::Kind,
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expected_domain: &Url,
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_data: &Data<Self::DataType>,
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) -> Result<(), Self::Error> {
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verify_domains_match(expected_domain, &apub.id)?;
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Ok(())
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}
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async fn from_json(
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apub: Self::Kind,
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_owner: &Self::Owner,
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data: &Data<Self::DataType>,
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) -> Result<Self, Self::Error>
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where
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Self: Sized,
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{
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let mut posts = apub.ordered_items;
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if posts.len() as i64 > FETCH_LIMIT_MAX {
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posts = posts
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.get(0..(FETCH_LIMIT_MAX as usize))
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.unwrap_or_default()
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.to_vec();
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}
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// We intentionally ignore errors here. This is because the outbox might contain posts from old
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// Lemmy versions, or from other software which we cant parse. In that case, we simply skip the
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// item and only parse the ones that work.
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// process items in parallel, to avoid long delay from fetch_site_metadata() and other processing
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join_all(posts.into_iter().map(|post| {
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async {
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// use separate request counter for each item, otherwise there will be problems with
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// parallel processing
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let verify = post.verify(data).await;
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if verify.is_ok() {
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post.receive(data).await.ok();
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}
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}
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}))
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.await;
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// This return value is unused, so just set an empty vec
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Ok(ApubCommunityFeatured(()))
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}
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}
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