Merge 3fb1725301 into 9120207314

Cargo.lock

@@ -3113,6 +3113,7 @@ name = "lemmy_federate"
 version = "0.19.5"
 dependencies = [
  "activitypub_federation",
+ "actix-web",
  "anyhow",
  "chrono",
  "diesel",
@@ -3131,6 +3132,7 @@ dependencies = [
  "tokio",
  "tokio-util",
  "tracing",
+ "url",
 ]
 
 [[package]]
@@ -3219,7 +3221,6 @@ dependencies = [
  "lettre",
  "markdown-it",
  "once_cell",
- "openssl",
  "pretty_assertions",
  "regex",
  "reqwest 0.11.27",

api_tests/prepare-drone-federation-test.sh

@@ -11,8 +11,6 @@ fi
 export RUST_BACKTRACE=1
 export RUST_LOG="warn,lemmy_server=$LEMMY_LOG_LEVEL,lemmy_federate=$LEMMY_LOG_LEVEL,lemmy_api=$LEMMY_LOG_LEVEL,lemmy_api_common=$LEMMY_LOG_LEVEL,lemmy_api_crud=$LEMMY_LOG_LEVEL,lemmy_apub=$LEMMY_LOG_LEVEL,lemmy_db_schema=$LEMMY_LOG_LEVEL,lemmy_db_views=$LEMMY_LOG_LEVEL,lemmy_db_views_actor=$LEMMY_LOG_LEVEL,lemmy_db_views_moderator=$LEMMY_LOG_LEVEL,lemmy_routes=$LEMMY_LOG_LEVEL,lemmy_utils=$LEMMY_LOG_LEVEL,lemmy_websocket=$LEMMY_LOG_LEVEL"
 
-export LEMMY_TEST_FAST_FEDERATION=1 # by default, the persistent federation queue has delays in the scale of 30s-5min
-
 # pictrs setup
 if [ ! -f "api_tests/pict-rs" ]; then
   curl "https://git.asonix.dog/asonix/pict-rs/releases/download/v0.5.16/pict-rs-linux-amd64" -o api_tests/pict-rs

crates/api_common/src/context.rs

@@ -75,6 +75,7 @@ impl LemmyContext {
       .app_data(context)
       // Dont allow any network fetches
       .http_fetch_limit(0)
+      .debug(true)
       .build()
       .await
       .expect("build federation config");

crates/db_schema/src/schema.rs

@@ -885,7 +885,7 @@ diesel::table! {
         send_community_followers_of -> Nullable<Int4>,
         send_all_instances -> Bool,
         actor_type -> ActorTypeEnum,
-        actor_apub_id -> Nullable<Text>,
+        actor_apub_id -> Text,
     }
 }
 

crates/db_schema/src/source/activity.rs

@@ -65,7 +65,7 @@ pub struct SentActivity {
   pub send_community_followers_of: Option<CommunityId>,
   pub send_all_instances: bool,
   pub actor_type: ActorType,
-  pub actor_apub_id: Option<DbUrl>,
+  pub actor_apub_id: DbUrl,
 }
 
 #[cfg_attr(feature = "full", derive(Insertable))]

crates/db_schema/src/source/instance.rs

@@ -35,4 +35,5 @@ pub struct InstanceForm {
   pub software: Option<String>,
   pub version: Option<String>,
   pub updated: Option<DateTime<Utc>>,
+  pub published: Option<DateTime<Utc>>,
 }

crates/federate/Cargo.toml

@@ -37,3 +37,5 @@ tokio-util = "0.7.11"
 
 [dev-dependencies]
 serial_test = { workspace = true }
+url.workspace = true
+actix-web.workspace = true

crates/federate/src/inboxes.rs

@@ -0,0 +1,152 @@
+use chrono::{DateTime, TimeDelta, TimeZone, Utc};
+use lemmy_api_common::context::LemmyContext;
+use lemmy_db_schema::{
+  newtypes::CommunityId,
+  source::{activity::SentActivity, instance::Instance, site::Site},
+};
+use lemmy_db_views_actor::structs::CommunityFollowerView;
+use lemmy_utils::error::LemmyResult;
+use once_cell::sync::Lazy;
+use reqwest::Url;
+use std::collections::{HashMap, HashSet};
+
+/// interval with which new additions to community_followers are queried.
+///
+/// The first time some user on an instance follows a specific remote community (or, more precisely:
+/// the first time a (followed_community_id, follower_inbox_url) tuple appears), this delay limits
+/// the maximum time until the follow actually results in activities from that community id being
+/// sent to that inbox url. This delay currently needs to not be too small because the DB load is
+/// currently fairly high because of the current structure of storing inboxes for every person, not
+/// having a separate list of shared_inboxes, and the architecture of having every instance queue be
+/// fully separate. (see https://github.com/LemmyNet/lemmy/issues/3958)
+static FOLLOW_ADDITIONS_RECHECK_DELAY: Lazy<TimeDelta> = Lazy::new(|| {
+  if cfg!(debug_assertions) {
+    TimeDelta::try_seconds(1).expect("TimeDelta out of bounds")
+  } else {
+    TimeDelta::try_minutes(2).expect("TimeDelta out of bounds")
+  }
+});
+
+/// The same as FOLLOW_ADDITIONS_RECHECK_DELAY, but triggering when the last person on an instance
+/// unfollows a specific remote community. This is expected to happen pretty rarely and updating it
+/// in a timely manner is not too important.
+static FOLLOW_REMOVALS_RECHECK_DELAY: Lazy<chrono::TimeDelta> =
+  Lazy::new(|| chrono::TimeDelta::try_hours(1).expect("TimeDelta out of bounds"));
+
+pub(crate) struct CommunityInboxCollector {
+  target: Instance,
+  // load site lazily because if an instance is first seen due to being on allowlist,
+  // the corresponding row in `site` may not exist yet since that is only added once
+  // `fetch_instance_actor_for_object` is called.
+  // (this should be unlikely to be relevant outside of the federation tests)
+  // TODO: use lazy
+  site_loaded: bool,
+  site: Option<Site>,
+  followed_communities: HashMap<CommunityId, HashSet<Url>>,
+  last_communities_fetch_full: DateTime<Utc>,
+  last_communities_fetch_incr: DateTime<Utc>,
+}
+
+impl CommunityInboxCollector {
+  pub fn new(target: Instance) -> Self {
+    Self {
+      target,
+      site_loaded: false,
+      site: None,
+      followed_communities: HashMap::new(),
+      last_communities_fetch_full: Utc.timestamp_nanos(0),
+      last_communities_fetch_incr: Utc.timestamp_nanos(0),
+    }
+  }
+
+  /// get inbox urls of sending the given activity to the given instance
+  /// most often this will return 0 values (if instance doesn't care about the activity)
+  /// or 1 value (the shared inbox)
+  /// > 1 values only happens for non-lemmy software
+  pub async fn get_inbox_urls(
+    &mut self,
+    activity: &SentActivity,
+    context: &LemmyContext,
+  ) -> LemmyResult<HashSet<Url>> {
+    let mut inbox_urls: HashSet<Url> = HashSet::new();
+
+    if activity.send_all_instances {
+      if !self.site_loaded {
+        self.site = Site::read_from_instance_id(&mut context.pool(), self.target.id).await?;
+        self.site_loaded = true;
+      }
+      if let Some(site) = &self.site {
+        // Nutomic: Most non-lemmy software wont have a site row. That means it cant handle these
+        // activities. So handling it like this is fine.
+        inbox_urls.insert(site.inbox_url.inner().clone());
+      }
+    }
+    if let Some(t) = &activity.send_community_followers_of {
+      if let Some(urls) = self.followed_communities.get(t) {
+        inbox_urls.extend(urls.iter().cloned());
+      }
+    }
+    inbox_urls.extend(
+      activity
+        .send_inboxes
+        .iter()
+        .filter_map(std::option::Option::as_ref)
+        .filter(|&u| (u.domain() == Some(&self.target.domain)))
+        .map(|u| u.inner().clone()),
+    );
+
+    // TODO: also needs to send to user followers
+
+    Ok(inbox_urls)
+  }
+
+  pub async fn update_communities(&mut self, context: &LemmyContext) -> LemmyResult<()> {
+    // update to time before fetch to ensure overlap. subtract 10s to ensure overlap even if
+    // published date is not exact
+    let updated_fetch =
+      Utc::now() - chrono::TimeDelta::try_seconds(10).expect("TimeDelta out of bounds");
+
+    let full_fetch = Utc::now() - self.last_communities_fetch_full;
+    if full_fetch > *FOLLOW_REMOVALS_RECHECK_DELAY {
+      // process removals every hour
+      self.followed_communities = self
+        .get_communities(Utc.timestamp_nanos(0), context)
+        .await?;
+      self.last_communities_fetch_full = updated_fetch;
+      self.last_communities_fetch_incr = self.last_communities_fetch_full;
+    }
+    let incr_fetch = Utc::now() - self.last_communities_fetch_incr;
+    if incr_fetch > *FOLLOW_ADDITIONS_RECHECK_DELAY {
+      // process additions every minute
+      let added = self
+        .get_communities(self.last_communities_fetch_incr, context)
+        .await?;
+      self.followed_communities.extend(added);
+      self.last_communities_fetch_incr = updated_fetch;
+    }
+    Ok(())
+  }
+
+  /// get a list of local communities with the remote inboxes on the given instance that cares about
+  /// them
+  async fn get_communities(
+    &mut self,
+    last_fetch: DateTime<Utc>,
+    context: &LemmyContext,
+  ) -> LemmyResult<HashMap<CommunityId, HashSet<Url>>> {
+    let followed = CommunityFollowerView::get_instance_followed_community_inboxes(
+      &mut context.pool(),
+      self.target.id,
+      last_fetch,
+    )
+    .await?;
+    Ok(
+      followed
+        .into_iter()
+        .fold(HashMap::new(), |mut map, (c, u)| {
+          map.entry(c).or_default().insert(u.into());
+          map
+        }),
+    )
+  }
+}

crates/federate/src/lib.rs

@@ -14,6 +14,7 @@ use tokio_util::sync::CancellationToken;
 use tracing::info;
 use util::FederationQueueStateWithDomain;
 
+mod inboxes;
 mod stats;
 mod util;
 mod worker;

crates/federate/src/util.rs

@@ -26,28 +26,16 @@ use std::{fmt::Debug, future::Future, pin::Pin, sync::Arc, time::Duration};
 use tokio::{task::JoinHandle, time::sleep};
 use tokio_util::sync::CancellationToken;
 
-/// Decrease the delays of the federation queue.
-/// Should only be used for federation tests since it significantly increases CPU and DB load of the
-/// federation queue.
-pub(crate) static LEMMY_TEST_FAST_FEDERATION: Lazy<bool> = Lazy::new(|| {
-  std::env::var("LEMMY_TEST_FAST_FEDERATION")
-    .map(|s| !s.is_empty())
-    .unwrap_or(false)
-});
-
 /// Recheck for new federation work every n seconds.
 ///
 /// When the queue is processed faster than new activities are added and it reaches the current time
 /// with an empty batch, this is the delay the queue waits before it checks if new activities have
 /// been added to the sent_activities table. This delay is only applied if no federated activity
 /// happens during sending activities of the last batch.
-pub(crate) static WORK_FINISHED_RECHECK_DELAY: Lazy<Duration> = Lazy::new(|| {
+#[cfg(debug_assertions)]
-  if *LEMMY_TEST_FAST_FEDERATION {
+pub(crate) static WORK_FINISHED_RECHECK_DELAY: Duration = Duration::from_millis(100);
-    Duration::from_millis(100)
+#[cfg(not(debug_assertions))]
-  } else {
+pub(crate) static WORK_FINISHED_RECHECK_DELAY: Duration = Duration::from_secs(30);
-    Duration::from_secs(30)
-  }
-});
 
 /// A task that will be run in an infinite loop, unless it is cancelled.
 /// If the task exits without being cancelled, an error will be logged and the task will be
@@ -192,6 +180,7 @@ pub(crate) async fn get_latest_activity_id(pool: &mut DbPool<'_>) -> Result<Acti
 
 /// the domain name is needed for logging, pass it to the stats printer so it doesn't need to look
 /// up the domain itself
+#[derive(Debug)]
 pub(crate) struct FederationQueueStateWithDomain {
   pub domain: String,
   pub state: FederationQueueState,

crates/federate/src/worker.rs

@@ -1,10 +1,12 @@
-use crate::util::{
+use crate::{
-  get_activity_cached,
+  inboxes::CommunityInboxCollector,
-  get_actor_cached,
+  util::{
-  get_latest_activity_id,
+    get_activity_cached,
-  FederationQueueStateWithDomain,
+    get_actor_cached,
-  LEMMY_TEST_FAST_FEDERATION,
+    get_latest_activity_id,
-  WORK_FINISHED_RECHECK_DELAY,
+    FederationQueueStateWithDomain,
+    WORK_FINISHED_RECHECK_DELAY,
+  },
 };
 use activitypub_federation::{
   activity_sending::SendActivityTask,
@@ -16,20 +18,16 @@ use chrono::{DateTime, Days, TimeZone, Utc};
 use lemmy_api_common::{context::LemmyContext, federate_retry_sleep_duration};
 use lemmy_apub::{activity_lists::SharedInboxActivities, FEDERATION_CONTEXT};
 use lemmy_db_schema::{
-  newtypes::{ActivityId, CommunityId, InstanceId},
+  newtypes::ActivityId,
   source::{
     activity::SentActivity,
     federation_queue_state::FederationQueueState,
     instance::{Instance, InstanceForm},
-    site::Site,
   },
   utils::naive_now,
 };
-use lemmy_db_views_actor::structs::CommunityFollowerView;
+use lemmy_utils::error::LemmyResult;
-use once_cell::sync::Lazy;
-use reqwest::Url;
 use std::{
-  collections::{HashMap, HashSet},
   ops::{Add, Deref},
   time::Duration,
 };
@@ -43,42 +41,17 @@ use tracing::{debug, info, trace, warn};
 static CHECK_SAVE_STATE_EVERY_IT: i64 = 100;
 /// Save state to db after this time has passed since the last state (so if the server crashes or is
 /// SIGKILLed, less than X seconds of activities are resent)
-static SAVE_STATE_EVERY_TIME: Duration = Duration::from_secs(60);
+#[cfg(debug_assertions)]
-/// interval with which new additions to community_followers are queried.
+static SAVE_STATE_EVERY_TIME: chrono::Duration = chrono::Duration::seconds(1);
-///
+#[cfg(not(debug_assertions))]
-/// The first time some user on an instance follows a specific remote community (or, more precisely:
+static SAVE_STATE_EVERY_TIME: chrono::Duration = chrono::Duration::seconds(60);
-/// the first time a (followed_community_id, follower_inbox_url) tuple appears), this delay limits
+
-/// the maximum time until the follow actually results in activities from that community id being
-/// sent to that inbox url. This delay currently needs to not be too small because the DB load is
-/// currently fairly high because of the current structure of storing inboxes for every person, not
-/// having a separate list of shared_inboxes, and the architecture of having every instance queue be
-/// fully separate. (see https://github.com/LemmyNet/lemmy/issues/3958)
-static FOLLOW_ADDITIONS_RECHECK_DELAY: Lazy<chrono::TimeDelta> = Lazy::new(|| {
-  if *LEMMY_TEST_FAST_FEDERATION {
-    chrono::TimeDelta::try_seconds(1).expect("TimeDelta out of bounds")
-  } else {
-    chrono::TimeDelta::try_minutes(2).expect("TimeDelta out of bounds")
-  }
-});
-/// The same as FOLLOW_ADDITIONS_RECHECK_DELAY, but triggering when the last person on an instance
-/// unfollows a specific remote community. This is expected to happen pretty rarely and updating it
-/// in a timely manner is not too important.
-static FOLLOW_REMOVALS_RECHECK_DELAY: Lazy<chrono::TimeDelta> =
-  Lazy::new(|| chrono::TimeDelta::try_hours(1).expect("TimeDelta out of bounds"));
 pub(crate) struct InstanceWorker {
-  instance: Instance,
+  target: Instance,
-  // load site lazily because if an instance is first seen due to being on allowlist,
+  inboxes: CommunityInboxCollector,
-  // the corresponding row in `site` may not exist yet since that is only added once
-  // `fetch_instance_actor_for_object` is called.
-  // (this should be unlikely to be relevant outside of the federation tests)
-  site_loaded: bool,
-  site: Option<Site>,
-  followed_communities: HashMap<CommunityId, HashSet<Url>>,
   stop: CancellationToken,
   context: Data<LemmyContext>,
   stats_sender: UnboundedSender<FederationQueueStateWithDomain>,
-  last_full_communities_fetch: DateTime<Utc>,
-  last_incremental_communities_fetch: DateTime<Utc>,
   state: FederationQueueState,
   last_state_insert: DateTime<Utc>,
 }
@@ -89,19 +62,16 @@ impl InstanceWorker {
     context: Data<LemmyContext>,
     stop: CancellationToken,
     stats_sender: UnboundedSender<FederationQueueStateWithDomain>,
-  ) -> Result<(), anyhow::Error> {
+  ) -> LemmyResult<()> {
     let mut pool = context.pool();
     let state = FederationQueueState::load(&mut pool, instance.id).await?;
+    let inboxes = CommunityInboxCollector::new(instance.clone());
     let mut worker = InstanceWorker {
-      instance,
+      target: instance,
-      site_loaded: false,
+      inboxes,
-      site: None,
-      followed_communities: HashMap::new(),
       stop,
       context,
       stats_sender,
-      last_full_communities_fetch: Utc.timestamp_nanos(0),
-      last_incremental_communities_fetch: Utc.timestamp_nanos(0),
       state,
       last_state_insert: Utc.timestamp_nanos(0),
     };
@@ -110,21 +80,19 @@ impl InstanceWorker {
   /// loop fetch new activities from db and send them to the inboxes of the given instances
   /// this worker only returns if (a) there is an internal error or (b) the cancellation token is
   /// cancelled (graceful exit)
-  pub(crate) async fn loop_until_stopped(&mut self) -> Result<(), anyhow::Error> {
+  pub(crate) async fn loop_until_stopped(&mut self) -> LemmyResult<()> {
-    debug!("Starting federation worker for {}", self.instance.domain);
+    debug!("Starting federation worker for {}", self.target.domain);
-    let save_state_every = chrono::Duration::from_std(SAVE_STATE_EVERY_TIME).expect("not negative");
+    self.inboxes.update_communities(&self.context).await?;
-
-    self.update_communities().await?;
     self.initial_fail_sleep().await?;
     while !self.stop.is_cancelled() {
       self.loop_batch().await?;
       if self.stop.is_cancelled() {
         break;
       }
-      if (Utc::now() - self.last_state_insert) > save_state_every {
+      if (Utc::now() - self.last_state_insert) > SAVE_STATE_EVERY_TIME {
         self.save_and_send_state().await?;
       }
-      self.update_communities().await?;
+      self.inboxes.update_communities(&self.context).await?;
     }
     // final update of state in db
     self.save_and_send_state().await?;
@@ -177,7 +145,7 @@ impl InstanceWorker {
       }
       // no more work to be done, wait before rechecking
       tokio::select! {
-        () = sleep(*WORK_FINISHED_RECHECK_DELAY) => {},
+        () = sleep(WORK_FINISHED_RECHECK_DELAY) => {},
         () = self.stop.cancelled() => {}
       }
       return Ok(());
@@ -193,7 +161,7 @@ impl InstanceWorker {
         .await
         .context("failed reading activity from db")?
       else {
-        debug!("{}: {:?} does not exist", self.instance.domain, id);
+        debug!("{}: {:?} does not exist", self.target.domain, id);
         self.state.last_successful_id = Some(id);
         continue;
       };
@@ -220,23 +188,22 @@ impl InstanceWorker {
     &mut self,
     activity: &SentActivity,
     object: &SharedInboxActivities,
-  ) -> Result<()> {
+  ) -> LemmyResult<()> {
-    let inbox_urls = self
+    println!("send retry loop {:?}", activity.id);
-      .get_inbox_urls(activity)
+    let inbox_urls = self.inboxes.get_inbox_urls(activity, &self.context).await?;
-      .await
-      .context("failed figuring out inbox urls")?;
     if inbox_urls.is_empty() {
-      trace!("{}: {:?} no inboxes", self.instance.domain, activity.id);
+      trace!("{}: {:?} no inboxes", self.target.domain, activity.id);
       self.state.last_successful_id = Some(activity.id);
       self.state.last_successful_published_time = Some(activity.published);
       return Ok(());
     }
-    let Some(actor_apub_id) = &activity.actor_apub_id else {
+    let actor = get_actor_cached(
-      return Ok(()); // activity was inserted before persistent queue was activated
+      &mut self.context.pool(),
-    };
+      activity.actor_type,
-    let actor = get_actor_cached(&mut self.context.pool(), activity.actor_type, actor_apub_id)
+      &activity.actor_apub_id,
-      .await
+    )
-      .context("failed getting actor instance (was it marked deleted / removed?)")?;
+    .await
+    .context("failed getting actor instance (was it marked deleted / removed?)")?;
 
     let object = WithContext::new(object.clone(), FEDERATION_CONTEXT.deref().clone());
     let inbox_urls = inbox_urls.into_iter().collect();
@@ -251,7 +218,7 @@ impl InstanceWorker {
         let retry_delay: Duration = federate_retry_sleep_duration(self.state.fail_count);
         info!(
           "{}: retrying {:?} attempt {} with delay {retry_delay:.2?}. ({e})",
-          self.instance.domain, activity.id, self.state.fail_count
+          self.target.domain, activity.id, self.state.fail_count
         );
         self.save_and_send_state().await?;
         tokio::select! {
@@ -264,105 +231,230 @@ impl InstanceWorker {
       }
 
       // Activity send successful, mark instance as alive if it hasn't been updated in a while.
-      let updated = self.instance.updated.unwrap_or(self.instance.published);
+      let updated = self.target.updated.unwrap_or(self.target.published);
+      dbg!(&updated);
       if updated.add(Days::new(1)) < Utc::now() {
-        self.instance.updated = Some(Utc::now());
+        self.target.updated = Some(Utc::now());
 
         let form = InstanceForm::builder()
-          .domain(self.instance.domain.clone())
+          .domain(self.target.domain.clone())
           .updated(Some(naive_now()))
           .build();
-        Instance::update(&mut self.context.pool(), self.instance.id, form).await?;
+        Instance::update(&mut self.context.pool(), self.target.id, form).await?;
       }
     }
     Ok(())
   }
 
-  /// get inbox urls of sending the given activity to the given instance
-  /// most often this will return 0 values (if instance doesn't care about the activity)
-  /// or 1 value (the shared inbox)
-  /// > 1 values only happens for non-lemmy software
-  async fn get_inbox_urls(&mut self, activity: &SentActivity) -> Result<HashSet<Url>> {
-    let mut inbox_urls: HashSet<Url> = HashSet::new();
-
-    if activity.send_all_instances {
-      if !self.site_loaded {
-        self.site = Site::read_from_instance_id(&mut self.context.pool(), self.instance.id).await?;
-        self.site_loaded = true;
-      }
-      if let Some(site) = &self.site {
-        // Nutomic: Most non-lemmy software wont have a site row. That means it cant handle these
-        // activities. So handling it like this is fine.
-        inbox_urls.insert(site.inbox_url.inner().clone());
-      }
-    }
-    if let Some(t) = &activity.send_community_followers_of {
-      if let Some(urls) = self.followed_communities.get(t) {
-        inbox_urls.extend(urls.iter().cloned());
-      }
-    }
-    inbox_urls.extend(
-      activity
-        .send_inboxes
-        .iter()
-        .filter_map(std::option::Option::as_ref)
-        .filter(|&u| (u.domain() == Some(&self.instance.domain)))
-        .map(|u| u.inner().clone()),
-    );
-    Ok(inbox_urls)
-  }
-
-  async fn update_communities(&mut self) -> Result<()> {
-    if (Utc::now() - self.last_full_communities_fetch) > *FOLLOW_REMOVALS_RECHECK_DELAY {
-      // process removals every hour
-      (self.followed_communities, self.last_full_communities_fetch) = self
-        .get_communities(self.instance.id, Utc.timestamp_nanos(0))
-        .await?;
-      self.last_incremental_communities_fetch = self.last_full_communities_fetch;
-    }
-    if (Utc::now() - self.last_incremental_communities_fetch) > *FOLLOW_ADDITIONS_RECHECK_DELAY {
-      // process additions every minute
-      let (news, time) = self
-        .get_communities(self.instance.id, self.last_incremental_communities_fetch)
-        .await?;
-      self.followed_communities.extend(news);
-      self.last_incremental_communities_fetch = time;
-    }
-    Ok(())
-  }
-
-  /// get a list of local communities with the remote inboxes on the given instance that cares about
-  /// them
-  async fn get_communities(
-    &mut self,
-    instance_id: InstanceId,
-    last_fetch: DateTime<Utc>,
-  ) -> Result<(HashMap<CommunityId, HashSet<Url>>, DateTime<Utc>)> {
-    let new_last_fetch =
-      Utc::now() - chrono::TimeDelta::try_seconds(10).expect("TimeDelta out of bounds"); // update to time before fetch to ensure overlap. subtract 10s to ensure overlap even if
-                                                                                         // published date is not exact
-    Ok((
-      CommunityFollowerView::get_instance_followed_community_inboxes(
-        &mut self.context.pool(),
-        instance_id,
-        last_fetch,
-      )
-      .await?
-      .into_iter()
-      .fold(HashMap::new(), |mut map, (c, u)| {
-        map.entry(c).or_default().insert(u.into());
-        map
-      }),
-      new_last_fetch,
-    ))
-  }
   async fn save_and_send_state(&mut self) -> Result<()> {
     self.last_state_insert = Utc::now();
     FederationQueueState::upsert(&mut self.context.pool(), &self.state).await?;
     self.stats_sender.send(FederationQueueStateWithDomain {
       state: self.state.clone(),
-      domain: self.instance.domain.clone(),
+      domain: self.target.domain.clone(),
     })?;
     Ok(())
   }
 }
+
+#[cfg(test)]
+#[allow(clippy::unwrap_used)]
+#[allow(clippy::indexing_slicing)]
+mod test {
+
+  use super::*;
+  use activitypub_federation::http_signatures::generate_actor_keypair;
+  use actix_web::{rt::System, web, App, HttpResponse, HttpServer};
+  use lemmy_api_common::utils::{generate_inbox_url, generate_shared_inbox_url};
+  use lemmy_db_schema::{
+    newtypes::DbUrl,
+    source::{
+      activity::{ActorType, SentActivityForm},
+      person::{Person, PersonInsertForm},
+    },
+    traits::Crud,
+  };
+  use reqwest::StatusCode;
+  use serde_json::Value;
+  use serial_test::serial;
+  use std::{fs::File, io::BufReader};
+  use tokio::{
+    select,
+    spawn,
+    sync::mpsc::{error::TryRecvError, unbounded_channel, UnboundedReceiver},
+  };
+  use url::Url;
+
+  struct Data {
+    context: activitypub_federation::config::Data<LemmyContext>,
+    instance: Instance,
+    person: Person,
+    stats_receiver: UnboundedReceiver<FederationQueueStateWithDomain>,
+    inbox_receiver: UnboundedReceiver<String>,
+    cancel: CancellationToken,
+  }
+
+  impl Data {
+    async fn init() -> LemmyResult<Self> {
+      let context = LemmyContext::init_test_context().await;
+      let instance = Instance::read_or_create(&mut context.pool(), "localhost".to_string()).await?;
+
+      let actor_keypair = generate_actor_keypair()?;
+      let actor_id: DbUrl = Url::parse("http://local.com/u/alice")?.into();
+      let person_form = PersonInsertForm::builder()
+        .name("alice".to_string())
+        .actor_id(Some(actor_id.clone()))
+        .private_key(Some(actor_keypair.private_key))
+        .public_key(actor_keypair.public_key)
+        .inbox_url(Some(generate_inbox_url(&actor_id)?))
+        .shared_inbox_url(Some(generate_shared_inbox_url(context.settings())?))
+        .instance_id(instance.id)
+        .build();
+      let person = Person::create(&mut context.pool(), &person_form).await?;
+
+      let cancel = CancellationToken::new();
+      let (stats_sender, stats_receiver) = unbounded_channel();
+      let (inbox_sender, inbox_receiver) = unbounded_channel();
+
+      // listen for received activities in background
+      let cancel_ = cancel.clone();
+      std::thread::spawn(move || System::new().block_on(listen_activities(inbox_sender, cancel_)));
+
+      spawn(InstanceWorker::init_and_loop(
+        instance.clone(),
+        context.reset_request_count(),
+        cancel.clone(),
+        stats_sender,
+      ));
+      // wait for startup
+      sleep(WORK_FINISHED_RECHECK_DELAY).await;
+
+      Ok(Self {
+        context,
+        instance,
+        person,
+        stats_receiver,
+        inbox_receiver,
+        cancel,
+      })
+    }
+
+    async fn cleanup(&self) -> LemmyResult<()> {
+      self.cancel.cancel();
+      sleep(WORK_FINISHED_RECHECK_DELAY).await;
+      Instance::delete_all(&mut self.context.pool()).await?;
+      Person::delete(&mut self.context.pool(), self.person.id).await?;
+      Ok(())
+    }
+  }
+
+  #[tokio::test]
+  #[serial]
+  async fn test_stats() -> LemmyResult<()> {
+    let mut data = Data::init().await?;
+
+    // first receive at startup
+    let rcv = data.stats_receiver.recv().await.unwrap();
+    assert_eq!(data.instance.id, rcv.state.instance_id);
+    assert_eq!(Some(ActivityId(0)), rcv.state.last_successful_id);
+
+    let sent = send_activity(data.person.actor_id.clone(), &data.context).await?;
+
+    // receive for successfully sent activity
+    let inbox_rcv = data.inbox_receiver.recv().await.unwrap();
+    let parsed_activity = serde_json::from_str::<WithContext<Value>>(&inbox_rcv)?;
+    assert_eq!(&sent.data, parsed_activity.inner());
+
+    let rcv = data.stats_receiver.recv().await.unwrap();
+    assert_eq!(data.instance.id, rcv.state.instance_id);
+    assert_eq!(Some(sent.id), rcv.state.last_successful_id);
+
+    data.cleanup().await?;
+
+    // it also sends state on shutdown
+    let rcv = data.stats_receiver.try_recv();
+    assert!(rcv.is_ok());
+
+    // nothing further received
+    let rcv = data.stats_receiver.try_recv();
+    assert_eq!(Some(TryRecvError::Disconnected), rcv.err());
+    let inbox_rcv = data.inbox_receiver.try_recv();
+    assert_eq!(Some(TryRecvError::Empty), inbox_rcv.err());
+
+    Ok(())
+  }
+
+  #[tokio::test]
+  #[serial]
+  async fn test_update_instance() -> LemmyResult<()> {
+    let mut data = Data::init().await?;
+
+    let published = DateTime::from_timestamp_nanos(0);
+    let form = InstanceForm::builder()
+      .domain(data.instance.domain.clone())
+      .published(Some(published))
+      .updated(None)
+      .build();
+    Instance::update(&mut data.context.pool(), data.instance.id, form).await?;
+
+    send_activity(data.person.actor_id.clone(), &data.context).await?;
+    data.inbox_receiver.recv().await.unwrap();
+
+    let instance =
+      Instance::read_or_create(&mut data.context.pool(), data.instance.domain.clone()).await?;
+
+    assert!(instance.updated.is_some());
+
+    data.cleanup().await?;
+
+    Ok(())
+  }
+
+  async fn listen_activities(
+    inbox_sender: UnboundedSender<String>,
+    cancel: CancellationToken,
+  ) -> LemmyResult<()> {
+    let run = HttpServer::new(move || {
+      App::new()
+        .app_data(actix_web::web::Data::new(inbox_sender.clone()))
+        .route(
+          "/inbox",
+          web::post().to(
+            |inbox_sender: actix_web::web::Data<UnboundedSender<String>>, body: String| async move {
+              inbox_sender.send(body.clone()).unwrap();
+              HttpResponse::new(StatusCode::OK)
+            },
+          ),
+        )
+    })
+    .bind(("127.0.0.1", 8085))?
+    .run();
+    select! {
+      _ = run => {},
+      _ = cancel.cancelled() => {
+    }
+    }
+    Ok(())
+  }
+
+  async fn send_activity(actor_id: DbUrl, context: &LemmyContext) -> LemmyResult<SentActivity> {
+    // create outgoing activity
+    let file = File::open("../apub/assets/lemmy/activities/voting/like_note.json")?;
+    let reader = BufReader::new(file);
+    let form = SentActivityForm {
+      ap_id: Url::parse("http://local.com/activity/1")?.into(),
+      data: serde_json::from_reader(reader)?,
+      sensitive: false,
+      send_inboxes: vec![Some(Url::parse("http://localhost:8085/inbox")?.into())],
+      send_all_instances: false,
+      send_community_followers_of: None,
+      actor_type: ActorType::Person,
+      actor_apub_id: actor_id,
+    };
+    let sent = SentActivity::create(&mut context.pool(), form).await?;
+
+    sleep(WORK_FINISHED_RECHECK_DELAY * 2).await;
+
+    Ok(sent)
+  }
+}

crates/utils/Cargo.toml

@@ -44,7 +44,6 @@ full = [
   "dep:enum-map",
   "dep:futures",
   "dep:tokio",
-  "dep:openssl",
   "dep:html2text",
   "dep:lettre",
   "dep:uuid",
@@ -74,7 +73,6 @@ uuid = { workspace = true, features = ["serde", "v4"], optional = true }
 rosetta-i18n = { workspace = true, optional = true }
 tokio = { workspace = true, optional = true }
 urlencoding = { workspace = true, optional = true }
-openssl = { version = "0.10.64", optional = true }
 html2text = { version = "0.12.5", optional = true }
 deser-hjson = { version = "2.2.4", optional = true }
 smart-default = { version = "0.7.1", optional = true }

crates/utils/src/apub.rs

@@ -1,26 +0,0 @@
-use openssl::{pkey::PKey, rsa::Rsa};
-use std::io::{Error, ErrorKind};
-
-pub struct Keypair {
-  pub private_key: String,
-  pub public_key: String,
-}
-
-/// Generate the asymmetric keypair for ActivityPub HTTP signatures.
-pub fn generate_actor_keypair() -> Result<Keypair, Error> {
-  let rsa = Rsa::generate(2048)?;
-  let pkey = PKey::from_rsa(rsa)?;
-  let public_key = pkey.public_key_to_pem()?;
-  let private_key = pkey.private_key_to_pem_pkcs8()?;
-  let key_to_string = |key| match String::from_utf8(key) {
-    Ok(s) => Ok(s),
-    Err(e) => Err(Error::new(
-      ErrorKind::Other,
-      format!("Failed converting key to string: {e}"),
-    )),
-  };
-  Ok(Keypair {
-    private_key: key_to_string(private_key)?,
-    public_key: key_to_string(public_key)?,
-  })
-}

crates/utils/src/lib.rs

@@ -2,7 +2,6 @@ use cfg_if::cfg_if;
 
 cfg_if! {
   if #[cfg(feature = "full")] {
-    pub mod apub;
     pub mod cache_header;
     pub mod email;
     pub mod rate_limit;

migrations/2024-05-30-085949_activity_actor_not_null/down.sql

@@ -0,0 +1,3 @@
+ALTER TABLE sent_activity
+    ALTER COLUMN actor_apub_id DROP NOT NULL;
+

migrations/2024-05-30-085949_activity_actor_not_null/up.sql

@@ -0,0 +1,3 @@
+ALTER TABLE sent_activity
+    ALTER COLUMN actor_apub_id SET NOT NULL;
+