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Merge pull request 'Add community outbox' (#74) from community-outbox into main

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Reviewed-on: https://yerbamate.dev/LemmyNet/lemmy/pulls/74
This commit is contained in:
nutomic 2020-07-29 20:51:54 +00:00
commit 6d8e1a7ab5
6 changed files with 127 additions and 64 deletions
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3
server/lemmy_db/src/post.rs
View file

@ -76,6 +76,9 @@ impl Post {
use crate::schema::post::dsl::*;
post
.filter(community_id.eq(the_community_id))
.then_order_by(published.desc())
.then_order_by(stickied.desc())
.limit(20)
.load::<Self>(conn)
}

36
server/src/apub/community.rs
View file

@ -31,7 +31,7 @@ use activitystreams_new::{
},
actor::{kind::GroupType, ApActor, Endpoints, Group},
base::{AnyBase, BaseExt},
collection::UnorderedCollection,
collection::{OrderedCollection, UnorderedCollection},
context,
object::Tombstone,
prelude::*,
@ -43,6 +43,7 @@ use lemmy_db::{
community::{Community, CommunityForm},
community_view::{CommunityFollowerView, CommunityModeratorView},
naive_now,
post::Post,
user::User_,
};
use lemmy_utils::convert_datetime;
@ -88,10 +89,10 @@ impl ToApub for Community {
group.set_content(d);
}
let mut ap_actor = ApActor::new(self.get_inbox_url().parse()?, group);
let mut ap_actor = ApActor::new(self.get_inbox_url()?, group);
ap_actor
.set_preferred_username(self.title.to_owned())
.set_outbox(self.get_outbox_url().parse()?)
.set_outbox(self.get_outbox_url()?)
.set_followers(self.get_followers_url().parse()?)
.set_following(self.get_following_url().parse()?)
.set_liked(self.get_liked_url().parse()?)
@ -411,6 +412,35 @@ pub async fn get_apub_community_followers(
Ok(create_apub_response(&collection))
}
pub async fn get_apub_community_outbox(
info: web::Path<CommunityQuery>,
db: DbPoolParam,
) -> Result<HttpResponse<Body>, LemmyError> {
let community = blocking(&db, move |conn| {
Community::read_from_name(&conn, &info.community_name)
})
.await??;
let community_id = community.id;
let posts = blocking(&db, move |conn| {
Post::list_for_community(conn, community_id)
})
.await??;
let mut pages: Vec<AnyBase> = vec![];
for p in posts {
pages.push(p.to_apub(&db).await?.into_any_base()?);
}
let len = pages.len();
let mut collection = OrderedCollection::new(pages);
collection
.set_context(context())
.set_id(community.get_outbox_url()?)
.set_total_items(len as u64);
Ok(create_apub_response(&collection))
}
pub async fn do_announce(
activity: AnyBase,
community: &Community,

63
server/src/apub/fetcher.rs
View file

@ -15,7 +15,7 @@ use crate::{
DbPool,
LemmyError,
};
use activitystreams_new::{base::BaseExt, object::Note, prelude::*};
use activitystreams_new::{base::BaseExt, collection::OrderedCollection, object::Note, prelude::*};
use actix_web::client::Client;
use chrono::NaiveDateTime;
use diesel::{result::Error::NotFound, PgConnection};
@ -40,6 +40,7 @@ use std::{fmt::Debug, time::Duration};
use url::Url;
static ACTOR_REFETCH_INTERVAL_SECONDS: i64 = 24 * 60 * 60;
static ACTOR_REFETCH_INTERVAL_SECONDS_DEBUG: i64 = 10;
// Fetch nodeinfo metadata from a remote instance.
async fn _fetch_node_info(client: &Client, domain: &str) -> Result<NodeInfo, LemmyError> {
@ -257,12 +258,13 @@ pub async fn get_or_fetch_and_upsert_user(
/// TODO it won't pick up new avatars, summaries etc until a day after.
/// Actors need an "update" activity pushed to other servers to fix this.
fn should_refetch_actor(last_refreshed: NaiveDateTime) -> bool {
if cfg!(debug_assertions) {
true
let update_interval = if cfg!(debug_assertions) {
// avoid infinite loop when fetching community outbox
chrono::Duration::seconds(ACTOR_REFETCH_INTERVAL_SECONDS_DEBUG)
} else {
let update_interval = chrono::Duration::seconds(ACTOR_REFETCH_INTERVAL_SECONDS);
chrono::Duration::seconds(ACTOR_REFETCH_INTERVAL_SECONDS)
};
last_refreshed.lt(&(naive_now() - update_interval))
}
}
/// Check if a remote community exists, create if not found, if its too old update it.Fetch a community, insert/update it in the database and return the community.
@ -280,21 +282,34 @@ pub async fn get_or_fetch_and_upsert_community(
match community {
Ok(c) if !c.local && should_refetch_actor(c.last_refreshed_at) => {
debug!("Fetching and updating from remote community: {}", apub_id);
let group = fetch_remote_object::<GroupExt>(client, apub_id).await?;
let mut cf = CommunityForm::from_apub(&group, client, pool).await?;
cf.last_refreshed_at = Some(naive_now());
let community = blocking(pool, move |conn| Community::update(conn, c.id, &cf)).await??;
Ok(community)
fetch_remote_community(apub_id, client, pool, Some(c.id)).await
}
Ok(c) => Ok(c),
Err(NotFound {}) => {
debug!("Fetching and creating remote community: {}", apub_id);
fetch_remote_community(apub_id, client, pool, None).await
}
Err(e) => Err(e.into()),
}
}
async fn fetch_remote_community(
apub_id: &Url,
client: &Client,
pool: &DbPool,
community_id: Option<i32>,
) -> Result<Community, LemmyError> {
let group = fetch_remote_object::<GroupExt>(client, apub_id).await?;
let cf = CommunityForm::from_apub(&group, client, pool).await?;
let community = blocking(pool, move |conn| Community::create(conn, &cf)).await??;
let community = blocking(pool, move |conn| {
if let Some(cid) = community_id {
Community::update(conn, cid, &cf)
} else {
Community::create(conn, &cf)
}
})
.await??;
// Also add the community moderators too
let attributed_to = group.inner.attributed_to().unwrap();
@ -313,6 +328,8 @@ pub async fn get_or_fetch_and_upsert_community(
creator_and_moderators.push(c_or_m);
}
// TODO: need to make this work to update mods of existing communities
if community_id.is_none() {
let community_id = community.id;
blocking(pool, move |conn| {
for mod_ in creator_and_moderators {
@ -326,11 +343,25 @@ pub async fn get_or_fetch_and_upsert_community(
Ok(()) as Result<(), LemmyError>
})
.await??;
}
// fetch outbox (maybe make this conditional)
let outbox =
fetch_remote_object::<OrderedCollection>(client, &community.get_outbox_url()?).await?;
let outbox_items = outbox.items().clone();
for o in outbox_items.many().unwrap() {
let page = PageExt::from_any_base(o)?.unwrap();
let post = PostForm::from_apub(&page, client, pool).await?;
let post_ap_id = post.ap_id.clone();
// Check whether the post already exists in the local db
let existing = blocking(pool, move |conn| Post::read_from_apub_id(conn, &post_ap_id)).await?;
match existing {
Ok(e) => blocking(pool, move |conn| Post::update(conn, e.id, &post)).await??,
Err(_) => blocking(pool, move |conn| Post::create(conn, &post)).await??,
};
}
Ok(community)
}
Err(e) => Err(e.into()),
}
}
fn upsert_post(post_form: &PostForm, conn: &PgConnection) -> Result<Post, LemmyError> {

8
server/src/apub/mod.rs
View file

@ -280,8 +280,8 @@ pub trait ActorType {
}
// TODO move these to the db rows
fn get_inbox_url(&self) -> String {
format!("{}/inbox", &self.actor_id_str())
fn get_inbox_url(&self) -> Result<Url, ParseError> {
Url::parse(&format!("{}/inbox", &self.actor_id_str()))
}
// TODO: make this return `Result<Url, ParseError>
@ -289,8 +289,8 @@ pub trait ActorType {
get_shared_inbox(&self.actor_id().unwrap())
}
fn get_outbox_url(&self) -> String {
format!("{}/outbox", &self.actor_id_str())
fn get_outbox_url(&self) -> Result<Url, ParseError> {
Url::parse(&format!("{}/outbox", &self.actor_id_str()))
}
fn get_followers_url(&self) -> String {

4
server/src/apub/user.rs
View file

@ -63,9 +63,9 @@ impl ToApub for User_ {
person.set_icon(image.into_any_base()?);
}
let mut ap_actor = ApActor::new(self.get_inbox_url().parse()?, person);
let mut ap_actor = ApActor::new(self.get_inbox_url()?, person);
ap_actor
.set_outbox(self.get_outbox_url().parse()?)
.set_outbox(self.get_outbox_url()?)
.set_followers(self.get_followers_url().parse()?)
.set_following(self.get_following_url().parse()?)
.set_liked(self.get_liked_url().parse()?)

9
server/src/routes/federation.rs
View file

@ -28,11 +28,10 @@ pub fn config(cfg: &mut web::ServiceConfig) {
"/c/{community_name}/followers",
web::get().to(get_apub_community_followers),
)
// TODO This is only useful for history which we aren't doing right now
// .route(
// "/c/{community_name}/outbox",
// web::get().to(get_apub_community_outbox),
// )
.route(
"/c/{community_name}/outbox",
web::get().to(get_apub_community_outbox),
)
.route("/u/{user_name}", web::get().to(get_apub_user_http))
.route("/post/{post_id}", web::get().to(get_apub_post))
.route("/comment/{comment_id}", web::get().to(get_apub_comment)),