partial test case for edit conflict

src/api.rs

@@ -1,10 +1,10 @@
 use crate::database::DatabaseHandle;
-use crate::error::{MyResult};
+use crate::error::MyResult;
 use crate::federation::activities::create_article::CreateArticle;
 use crate::federation::activities::update_article::UpdateArticle;
-use crate::federation::objects::article::{DbArticle};
+use crate::federation::objects::article::DbArticle;
 use crate::federation::objects::edit::DbEdit;
-use crate::federation::objects::instance::{DbInstance};
+use crate::federation::objects::instance::DbInstance;
 use activitypub_federation::config::Data;
 use activitypub_federation::fetch::object_id::ObjectId;
 
@@ -75,24 +75,34 @@ pub struct EditArticleData {
 async fn edit_article(
     data: Data<DatabaseHandle>,
     Form(edit_article): Form<EditArticleData>,
-) -> MyResult<Json<DbArticle>> {
+) -> MyResult<()> {
     let original_article = {
         let mut lock = data.articles.lock().unwrap();
         let article = lock.get_mut(edit_article.ap_id.inner()).unwrap();
         article.clone()
     };
     let edit = DbEdit::new(&original_article, &edit_article.new_text)?;
-    let updated_article = {
-        let mut lock = data.articles.lock().unwrap();
-        let article = lock.get_mut(edit_article.ap_id.inner()).unwrap();
-        article.text = edit_article.new_text;
-        article.edits.push(edit.clone());
-        article.clone()
-    };
+    if original_article.local {
+        let updated_article = {
+            let mut lock = data.articles.lock().unwrap();
+            let article = lock.get_mut(edit_article.ap_id.inner()).unwrap();
+            article.text = edit_article.new_text;
+            article.edits.push(edit.clone());
+            article.clone()
+        };
 
-    UpdateArticle::send_to_followers(updated_article.clone(), edit, &data).await?;
+        UpdateArticle::send_to_followers(edit, updated_article.clone(), &data).await?;
+    } else {
+        UpdateArticle::send_to_origin(
+            edit,
+            // TODO: should be dereference(), but then article is refetched which breaks test_edit_conflict()
+            original_article.instance.dereference_local(&data).await?,
+            &data,
+        )
+        .await?;
+    }
 
-    Ok(Json(updated_article))
+    Ok(())
 }
 
 #[derive(Deserialize, Serialize, Clone)]

src/federation/activities/update_article.rs

@@ -29,34 +29,41 @@ pub struct UpdateArticle {
 
 impl UpdateArticle {
     pub async fn send_to_followers(
-        article: DbArticle,
         edit: DbEdit,
+        article: DbArticle,
+        data: &Data<DatabaseHandle>,
+    ) -> MyResult<()> {
+        debug_assert!(article.local);
+        let local_instance = data.local_instance();
+        let id = generate_activity_id(local_instance.ap_id.inner())?;
+        let update = UpdateArticle {
+            actor: local_instance.ap_id.clone(),
+            to: local_instance.follower_ids(),
+            object: edit.into_json(data).await?,
+            kind: Default::default(),
+            id,
+        };
+        local_instance.send_to_followers(update, data).await?;
+        Ok(())
+    }
+
+    pub async fn send_to_origin(
+        edit: DbEdit,
+        article_instance: DbInstance,
         data: &Data<DatabaseHandle>,
     ) -> MyResult<()> {
         let local_instance = data.local_instance();
         let id = generate_activity_id(local_instance.ap_id.inner())?;
-        if article.local {
-            let update = UpdateArticle {
-                actor: local_instance.ap_id.clone(),
-                to: local_instance.follower_ids(),
-                object: edit.into_json(data).await?,
-                kind: Default::default(),
-                id,
-            };
-            local_instance.send_to_followers(update, data).await?;
-        } else {
-            let article_instance = article.instance.dereference(data).await?;
-            let update = UpdateArticle {
-                actor: local_instance.ap_id.clone(),
-                to: vec![article_instance.ap_id.into_inner()],
-                object: edit.into_json(data).await?,
-                kind: Default::default(),
-                id,
-            };
-            local_instance
-                .send(update, vec![article_instance.inbox], data)
-                .await?;
-        }
+        let update = UpdateArticle {
+            actor: local_instance.ap_id.clone(),
+            to: vec![article_instance.ap_id.into_inner()],
+            object: edit.into_json(data).await?,
+            kind: Default::default(),
+            id,
+        };
+        local_instance
+            .send(update, vec![article_instance.inbox], data)
+            .await?;
         Ok(())
     }
 }

src/federation/objects/edit.rs

@@ -91,6 +91,8 @@ impl Object for DbEdit {
         let article = lock.get_mut(edit.article_id.inner()).unwrap();
         article.edits.push(edit.clone());
         let patch = Patch::from_str(&edit.diff)?;
+        // TODO: this will give wrong result if new article text is federated, and then also new
+        //       edit is applied. probably need to keep track of versions
         article.text = apply(&article.text, &patch)?;
 
         Ok(edit)

src/federation/objects/instance.rs

@@ -13,6 +13,7 @@ use activitypub_federation::{
 use chrono::{DateTime, Local, Utc};
 use serde::{Deserialize, Serialize};
 use std::fmt::Debug;
+use tracing::warn;
 use url::Url;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -94,7 +95,10 @@ impl DbInstance {
         let activity = WithContext::new_default(activity);
         let sends = SendActivityTask::prepare(&activity, self, recipients, data).await?;
         for send in sends {
-            send.sign_and_send(data).await?;
+            let send = send.sign_and_send(data).await;
+            if let Err(e) = send {
+                warn!("Failed to send activity {:?}: {e}", activity);
+            }
         }
         Ok(())
     }

tests/common.rs

@@ -1,5 +1,6 @@
-use fediwiki::api::{FollowInstance, ResolveObject};
+use fediwiki::api::{EditArticleData, FollowInstance, GetArticleData, ResolveObject};
 use fediwiki::error::MyResult;
+use fediwiki::federation::objects::article::DbArticle;
 use fediwiki::federation::objects::instance::DbInstance;
 use fediwiki::start;
 use once_cell::sync::Lazy;
@@ -63,6 +64,24 @@ impl TestData {
     }
 }
 
+pub async fn edit_article(
+    hostname: &str,
+    title: &str,
+    edit_form: &EditArticleData,
+) -> MyResult<DbArticle> {
+    CLIENT
+        .patch(format!("http://{}/api/v1/article", hostname))
+        .form(edit_form)
+        .send()
+        .await?;
+    let get_article = GetArticleData {
+        title: title.to_string(),
+    };
+    let updated_article: DbArticle =
+        get_query(hostname, &"article".to_string(), Some(get_article)).await?;
+    Ok(updated_article)
+}
+
 pub async fn get<T>(hostname: &str, endpoint: &str) -> MyResult<T>
 where
     T: for<'de> Deserialize<'de>,
@@ -96,19 +115,6 @@ where
         .await?)
 }
 
-pub async fn patch<T: Serialize, R>(hostname: &str, endpoint: &str, form: &T) -> MyResult<R>
-where
-    R: for<'de> Deserialize<'de>,
-{
-    Ok(CLIENT
-        .patch(format!("http://{}/api/v1/{}", hostname, endpoint))
-        .form(form)
-        .send()
-        .await?
-        .json()
-        .await?)
-}
-
 pub async fn follow_instance(follow_instance: &str, followed_instance: &str) -> MyResult<()> {
     // fetch beta instance on alpha
     let resolve_form = ResolveObject {

tests/test.rs

@@ -2,7 +2,7 @@ extern crate fediwiki;
 
 mod common;
 
-use crate::common::{follow_instance, get_query, patch, post, TestData};
+use crate::common::{edit_article, follow_instance, get_query, post, TestData};
 use common::get;
 use fediwiki::api::{CreateArticleData, EditArticleData, GetArticleData, ResolveObject};
 use fediwiki::error::MyResult;
@@ -52,7 +52,7 @@ async fn test_create_read_and_edit_article() -> MyResult<()> {
         ap_id: create_res.ap_id.clone(),
         new_text: "Lorem Ipsum 2".to_string(),
     };
-    let edit_res: DbArticle = patch(data.hostname_alpha, "article", &edit_form).await?;
+    let edit_res = edit_article(data.hostname_alpha, &create_res.title, &edit_form).await?;
     assert_eq!(edit_form.new_text, edit_res.text);
     assert_eq!(1, edit_res.edits.len());
 
@@ -163,7 +163,7 @@ async fn test_edit_local_article() -> MyResult<()> {
         ap_id: create_res.ap_id,
         new_text: "Lorem Ipsum 2".to_string(),
     };
-    let edit_res: DbArticle = patch(data.hostname_beta, "article", &edit_form).await?;
+    let edit_res = edit_article(data.hostname_beta, &create_res.title, &edit_form).await?;
     assert_eq!(edit_res.text, edit_form.new_text);
     assert_eq!(edit_res.edits.len(), 1);
     assert!(edit_res.edits[0]
@@ -222,7 +222,7 @@ async fn test_edit_remote_article() -> MyResult<()> {
         ap_id: create_res.ap_id,
         new_text: "Lorem Ipsum 2".to_string(),
     };
-    let edit_res: DbArticle = patch(data.hostname_alpha, "article", &edit_form).await?;
+    let edit_res = edit_article(data.hostname_alpha, &create_res.title, &edit_form).await?;
     assert_eq!(edit_res.text, edit_form.new_text);
     assert_eq!(edit_res.edits.len(), 1);
     assert!(!edit_res.local);
@@ -266,12 +266,20 @@ async fn test_edit_conflict() -> MyResult<()> {
     assert_eq!(create_res.title, create_form.title);
     assert!(create_res.local);
 
+    // fetch article to gamma
+    let resolve_object = ResolveObject {
+        id: create_res.ap_id.inner().clone(),
+    };
+    let resolve_res: DbArticle =
+        get_query(data.hostname_gamma, "resolve_article", Some(resolve_object)).await?;
+    assert_eq!(create_res.text, resolve_res.text);
+
     // alpha edits article
     let edit_form = EditArticleData {
         ap_id: create_res.ap_id.clone(),
         new_text: "Lorem Ipsum".to_string(),
     };
-    let edit_res: DbArticle = patch(data.hostname_alpha, "article", &edit_form).await?;
+    let edit_res = edit_article(data.hostname_alpha, &create_res.title, &edit_form).await?;
     assert_eq!(edit_res.text, edit_form.new_text);
     assert_eq!(edit_res.edits.len(), 1);
     assert!(!edit_res.local);
@@ -280,28 +288,15 @@ async fn test_edit_conflict() -> MyResult<()> {
         .to_string()
         .starts_with(&edit_res.ap_id.to_string()));
 
-    // fetch article to gamma
-    let resolve_object = ResolveObject {
-        id: create_res.ap_id.inner().clone(),
-    };
-    get_query::<DbArticle, _>(data.hostname_gamma, "resolve_article", Some(resolve_object)).await?;
-
     // gamma also edits, as its not the latest version there is a conflict
-    // TODO: get this working
     let edit_form = EditArticleData {
         ap_id: create_res.ap_id,
-        new_text: "Ipsum Lorem".to_string(),
+        new_text: "aaaa".to_string(),
     };
-    dbg!(&edit_form);
-    let edit_res: DbArticle = dbg!(patch(data.hostname_gamma, "article", &edit_form).await)?;
-    dbg!(&edit_res);
-    assert_eq!(edit_res.text, edit_form.new_text);
-    assert_eq!(edit_res.edits.len(), 1);
+    let edit_res = edit_article(data.hostname_gamma, &create_res.title, &edit_form).await?;
+    assert_eq!(create_res.text, edit_res.text);
+    assert_eq!(0, edit_res.edits.len());
     assert!(!edit_res.local);
-    assert!(edit_res.edits[0]
-        .id
-        .to_string()
-        .starts_with(&edit_res.ap_id.to_string()));
 
     data.stop()
 }