Ignore old federated post edits (ref #4529) (#4586)

* Ignore old federated post edits (ref #4529)

* use filter on insert

* coalesce(updated, published)

* avoid comment conflict clause

---------

Co-authored-by: SleeplessOne1917 <28871516+SleeplessOne1917@users.noreply.github.com>

crates/apub/src/objects/comment.rs

@@ -29,6 +29,7 @@ use lemmy_db_schema::{
     post::Post,
   },
   traits::Crud,
+  utils::naive_now,
 };
 use lemmy_utils::{
   error::{LemmyError, LemmyErrorType},
@@ -141,6 +142,7 @@ impl Object for ApubComment {
     check_apub_id_valid_with_strictness(note.id.inner(), community.local, context).await?;
     verify_is_remote_object(note.id.inner(), context.settings())?;
     verify_person_in_community(&note.attributed_to, &community, context).await?;
+
     let (post, _) = note.get_parents(context).await?;
     let creator = note.attributed_to.dereference(context).await?;
     let is_mod_or_admin = is_mod_or_admin(&mut context.pool(), &creator, community.id)
@@ -184,7 +186,14 @@ impl Object for ApubComment {
       language_id,
     };
     let parent_comment_path = parent_comment.map(|t| t.0.path);
-    let comment = Comment::create(&mut context.pool(), &form, parent_comment_path.as_ref()).await?;
+    let timestamp: DateTime<Utc> = note.updated.or(note.published).unwrap_or_else(naive_now);
+    let comment = Comment::insert_apub(
+      &mut context.pool(),
+      Some(timestamp),
+      &form,
+      parent_comment_path.as_ref(),
+    )
+    .await?;
     Ok(comment.into())
   }
 }

crates/apub/src/objects/community.rs

@@ -175,7 +175,8 @@ impl Object for ApubCommunity {
     let languages =
       LanguageTag::to_language_id_multiple(group.language, &mut context.pool()).await?;
 
-    let community = Community::create(&mut context.pool(), &form).await?;
+    let timestamp = group.updated.or(group.published).unwrap_or_else(naive_now);
+    let community = Community::insert_apub(&mut context.pool(), timestamp, &form).await?;
     CommunityLanguage::update(&mut context.pool(), languages, community.id).await?;
 
     let community: ApubCommunity = community.into();

crates/apub/src/objects/post.rs

@@ -41,6 +41,7 @@ use lemmy_db_schema::{
     post::{Post, PostInsertForm, PostUpdateForm},
   },
   traits::Crud,
+  utils::naive_now,
 };
 use lemmy_db_views_actor::structs::CommunityModeratorView;
 use lemmy_utils::{
@@ -270,7 +271,8 @@ impl Object for ApubPost {
         .build()
     };
 
-    let post = Post::create(&mut context.pool(), &form).await?;
+    let timestamp = page.updated.or(page.published).unwrap_or_else(naive_now);
+    let post = Post::insert_apub(&mut context.pool(), timestamp, &form).await?;
 
     generate_post_link_metadata(
       post.clone(),

crates/apub/src/objects/private_message.rs

@@ -23,6 +23,7 @@ use lemmy_db_schema::{
     private_message::{PrivateMessage, PrivateMessageInsertForm},
   },
   traits::Crud,
+  utils::naive_now,
 };
 use lemmy_utils::{
   error::{LemmyError, LemmyErrorType},
@@ -142,7 +143,8 @@ impl Object for ApubPrivateMessage {
       ap_id: Some(note.id.into()),
       local: Some(false),
     };
-    let pm = PrivateMessage::create(&mut context.pool(), &form).await?;
+    let timestamp = note.updated.or(note.published).unwrap_or_else(naive_now);
+    let pm = PrivateMessage::insert_apub(&mut context.pool(), timestamp, &form).await?;
     Ok(pm.into())
   }
 }

crates/db_schema/src/impls/comment.rs

@@ -1,4 +1,5 @@
 use crate::{
+  diesel::DecoratableTarget,
   newtypes::{CommentId, DbUrl, PersonId},
   schema::comment,
   source::comment::{
@@ -11,8 +12,9 @@ use crate::{
     CommentUpdateForm,
   },
   traits::{Crud, Likeable, Saveable},
-  utils::{get_conn, naive_now, DbPool, DELETED_REPLACEMENT_TEXT},
+  utils::{functions::coalesce, get_conn, naive_now, DbPool, DELETED_REPLACEMENT_TEXT},
 };
+use chrono::{DateTime, Utc};
 use diesel::{
   dsl::{insert_into, sql_query},
   result::Error,
@@ -59,6 +61,15 @@ impl Comment {
     pool: &mut DbPool<'_>,
     comment_form: &CommentInsertForm,
     parent_path: Option<&Ltree>,
+  ) -> Result<Comment, Error> {
+    Self::insert_apub(pool, None, comment_form, parent_path).await
+  }
+
+  pub async fn insert_apub(
+    pool: &mut DbPool<'_>,
+    timestamp: Option<DateTime<Utc>>,
+    comment_form: &CommentInsertForm,
+    parent_path: Option<&Ltree>,
   ) -> Result<Comment, Error> {
     let conn = &mut get_conn(pool).await?;
 
@@ -67,13 +78,21 @@ impl Comment {
       .run(|conn| {
         Box::pin(async move {
           // Insert, to get the id
-          let inserted_comment = insert_into(comment::table)
+          let inserted_comment = if let Some(timestamp) = timestamp {
+            insert_into(comment::table)
               .values(comment_form)
               .on_conflict(comment::ap_id)
+              .filter_target(coalesce(comment::updated, comment::published).lt(timestamp))
               .do_update()
               .set(comment_form)
               .get_result::<Self>(conn)
-            .await?;
+              .await?
+          } else {
+            insert_into(comment::table)
+              .values(comment_form)
+              .get_result::<Self>(conn)
+              .await?
+          };
 
           let comment_id = inserted_comment.id;
 
@@ -129,6 +148,7 @@ where ca.comment_id = c.id"
       })
       .await
   }
+
   pub async fn read_from_apub_id(
     pool: &mut DbPool<'_>,
     object_id: Url,

crates/db_schema/src/impls/community.rs

@@ -1,4 +1,5 @@
 use crate::{
+  diesel::DecoratableTarget,
   newtypes::{CommunityId, DbUrl, PersonId},
   schema::{community, community_follower, instance},
   source::{
@@ -17,9 +18,14 @@ use crate::{
     post::Post,
   },
   traits::{ApubActor, Bannable, Crud, Followable, Joinable},
-  utils::{functions::lower, get_conn, DbPool},
+  utils::{
+    functions::{coalesce, lower},
+    get_conn,
+    DbPool,
+  },
   SubscribedType,
 };
+use chrono::{DateTime, Utc};
 use diesel::{
   deserialize,
   dsl,
@@ -44,25 +50,15 @@ impl Crud for Community {
   type IdType = CommunityId;
 
   async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result<Self, Error> {
-    let is_new_community = match &form.actor_id {
-      Some(id) => Community::read_from_apub_id(pool, id).await?.is_none(),
-      None => true,
-    };
     let conn = &mut get_conn(pool).await?;
 
-    // Can't do separate insert/update commands because InsertForm/UpdateForm aren't convertible
     let community_ = insert_into(community::table)
       .values(form)
-      .on_conflict(community::actor_id)
-      .do_update()
-      .set(form)
       .get_result::<Self>(conn)
       .await?;
 
     // Initialize languages for new community
-    if is_new_community {
     CommunityLanguage::update(pool, vec![], community_.id).await?;
-    }
 
     Ok(community_)
   }
@@ -116,6 +112,35 @@ pub enum CollectionType {
 }
 
 impl Community {
+  pub async fn insert_apub(
+    pool: &mut DbPool<'_>,
+    timestamp: DateTime<Utc>,
+    form: &CommunityInsertForm,
+  ) -> Result<Self, Error> {
+    let is_new_community = match &form.actor_id {
+      Some(id) => Community::read_from_apub_id(pool, id).await?.is_none(),
+      None => true,
+    };
+    let conn = &mut get_conn(pool).await?;
+
+    // Can't do separate insert/update commands because InsertForm/UpdateForm aren't convertible
+    let community_ = insert_into(community::table)
+      .values(form)
+      .on_conflict(community::actor_id)
+      .filter_target(coalesce(community::updated, community::published).lt(timestamp))
+      .do_update()
+      .set(form)
+      .get_result::<Self>(conn)
+      .await?;
+
+    // Initialize languages for new community
+    if is_new_community {
+      CommunityLanguage::update(pool, vec![], community_.id).await?;
+    }
+
+    Ok(community_)
+  }
+
   /// Get the community which has a given moderators or featured url, also return the collection type
   pub async fn get_by_collection_url(
     pool: &mut DbPool<'_>,

crates/db_schema/src/impls/post.rs

@@ -27,8 +27,15 @@ use crate::{
   },
 };
 use ::url::Url;
-use chrono::Utc;
-use diesel::{dsl::insert_into, result::Error, ExpressionMethods, QueryDsl, TextExpressionMethods};
+use chrono::{DateTime, Utc};
+use diesel::{
+  dsl::insert_into,
+  result::Error,
+  DecoratableTarget,
+  ExpressionMethods,
+  QueryDsl,
+  TextExpressionMethods,
+};
 use diesel_async::RunQueryDsl;
 use std::collections::HashSet;
 
@@ -42,9 +49,6 @@ impl Crud for Post {
     let conn = &mut get_conn(pool).await?;
     insert_into(post::table)
       .values(form)
-      .on_conflict(post::ap_id)
-      .do_update()
-      .set(form)
       .get_result::<Self>(conn)
       .await
   }
@@ -63,6 +67,22 @@ impl Crud for Post {
 }
 
 impl Post {
+  pub async fn insert_apub(
+    pool: &mut DbPool<'_>,
+    timestamp: DateTime<Utc>,
+    form: &PostInsertForm,
+  ) -> Result<Self, Error> {
+    let conn = &mut get_conn(pool).await?;
+    insert_into(post::table)
+      .values(form)
+      .on_conflict(post::ap_id)
+      .filter_target(coalesce(post::updated, post::published).lt(timestamp))
+      .do_update()
+      .set(form)
+      .get_result::<Self>(conn)
+      .await
+  }
+
   pub async fn list_for_community(
     pool: &mut DbPool<'_>,
     the_community_id: CommunityId,

crates/db_schema/src/impls/private_message.rs

@@ -1,10 +1,12 @@
 use crate::{
+  diesel::DecoratableTarget,
   newtypes::{DbUrl, PersonId, PrivateMessageId},
-  schema::private_message::dsl::{ap_id, private_message, read, recipient_id},
+  schema::private_message,
   source::private_message::{PrivateMessage, PrivateMessageInsertForm, PrivateMessageUpdateForm},
   traits::Crud,
-  utils::{get_conn, DbPool},
+  utils::{functions::coalesce, get_conn, DbPool},
 };
+use chrono::{DateTime, Utc};
 use diesel::{dsl::insert_into, result::Error, ExpressionMethods, QueryDsl};
 use diesel_async::RunQueryDsl;
 use lemmy_utils::error::LemmyError;
@@ -18,11 +20,8 @@ impl Crud for PrivateMessage {
 
   async fn create(pool: &mut DbPool<'_>, form: &Self::InsertForm) -> Result<Self, Error> {
     let conn = &mut get_conn(pool).await?;
-    insert_into(private_message)
+    insert_into(private_message::table)
       .values(form)
-      .on_conflict(ap_id)
-      .do_update()
-      .set(form)
       .get_result::<Self>(conn)
       .await
   }
@@ -33,7 +32,7 @@ impl Crud for PrivateMessage {
     form: &Self::UpdateForm,
   ) -> Result<Self, Error> {
     let conn = &mut get_conn(pool).await?;
-    diesel::update(private_message.find(private_message_id))
+    diesel::update(private_message::table.find(private_message_id))
       .set(form)
       .get_result::<Self>(conn)
       .await
@@ -41,17 +40,33 @@ impl Crud for PrivateMessage {
 }
 
 impl PrivateMessage {
+  pub async fn insert_apub(
+    pool: &mut DbPool<'_>,
+    timestamp: DateTime<Utc>,
+    form: &PrivateMessageInsertForm,
+  ) -> Result<Self, Error> {
+    let conn = &mut get_conn(pool).await?;
+    insert_into(private_message::table)
+      .values(form)
+      .on_conflict(private_message::ap_id)
+      .filter_target(coalesce(private_message::updated, private_message::published).lt(timestamp))
+      .do_update()
+      .set(form)
+      .get_result::<Self>(conn)
+      .await
+  }
+
   pub async fn mark_all_as_read(
     pool: &mut DbPool<'_>,
     for_recipient_id: PersonId,
   ) -> Result<Vec<PrivateMessage>, Error> {
     let conn = &mut get_conn(pool).await?;
     diesel::update(
-      private_message
-        .filter(recipient_id.eq(for_recipient_id))
-        .filter(read.eq(false)),
+      private_message::table
+        .filter(private_message::recipient_id.eq(for_recipient_id))
+        .filter(private_message::read.eq(false)),
     )
-    .set(read.eq(true))
+    .set(private_message::read.eq(true))
     .get_results::<Self>(conn)
     .await
   }
@@ -63,8 +78,8 @@ impl PrivateMessage {
     let conn = &mut get_conn(pool).await?;
     let object_id: DbUrl = object_id.into();
     Ok(
-      private_message
-        .filter(ap_id.eq(object_id))
+      private_message::table
+        .filter(private_message::ap_id.eq(object_id))
         .first::<PrivateMessage>(conn)
         .await
         .ok()