federate article create/update

src/api.rs

@@ -1,6 +1,9 @@
 use crate::database::DatabaseHandle;
 
 use crate::error::MyResult;
+use crate::federation::activities::create_or_update_article::{
+    CreateOrUpdateArticle, CreateOrUpdateType,
+};
 use crate::federation::objects::article::DbArticle;
 use crate::federation::objects::instance::DbInstance;
 use crate::utils::generate_object_id;
@@ -16,7 +19,10 @@ use url::Url;
 
 pub fn api_routes() -> Router {
     Router::new()
-        .route("/article", get(get_article).post(create_article))
+        .route(
+            "/article",
+            get(get_article).post(create_article).patch(edit_article),
+        )
         .route("/resolve_object", get(resolve_object))
         .route("/instance", get(get_local_instance))
         .route("/instance/follow", post(follow_instance))
@@ -42,8 +48,46 @@ async fn create_article(
         instance: local_instance_id,
         local: true,
     };
-    let mut articles = data.articles.lock().unwrap();
-    articles.insert(article.ap_id.inner().clone(), article.clone());
+    {
+        let mut articles = data.articles.lock().unwrap();
+        articles.insert(article.ap_id.inner().clone(), article.clone());
+    }
+
+    CreateOrUpdateArticle::send_to_local_followers(
+        article.clone(),
+        CreateOrUpdateType::Create,
+        &data,
+    )
+    .await?;
+
+    Ok(Json(article))
+}
+
+#[derive(Deserialize, Serialize)]
+pub struct EditArticle {
+    pub ap_id: ObjectId<DbArticle>,
+    pub new_text: String,
+}
+
+#[debug_handler]
+async fn edit_article(
+    data: Data<DatabaseHandle>,
+    Form(edit_article): Form<EditArticle>,
+) -> MyResult<Json<DbArticle>> {
+    let 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.clone()
+    };
+
+    CreateOrUpdateArticle::send_to_local_followers(
+        article.clone(),
+        CreateOrUpdateType::Update,
+        &data,
+    )
+    .await?;
+
     Ok(Json(article))
 }
 

src/federation/activities/create_or_update_article.rs

@@ -0,0 +1,85 @@
+use crate::database::DatabaseHandle;
+use crate::error::MyResult;
+use crate::federation::objects::article::{Article, DbArticle};
+use crate::federation::objects::instance::DbInstance;
+use crate::utils::generate_object_id;
+use activitypub_federation::{
+    config::Data,
+    fetch::object_id::ObjectId,
+    protocol::helpers::deserialize_one_or_many,
+    traits::{ActivityHandler, Object},
+};
+use serde::{Deserialize, Serialize};
+use url::Url;
+
+#[derive(Clone, Debug, Deserialize, Serialize, PartialEq, Eq)]
+pub enum CreateOrUpdateType {
+    Create,
+    Update,
+}
+
+// TODO: temporary placeholder, later rework this to send diffs
+#[derive(Deserialize, Serialize, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct CreateOrUpdateArticle {
+    pub actor: ObjectId<DbInstance>,
+    #[serde(deserialize_with = "deserialize_one_or_many")]
+    pub to: Vec<Url>,
+    pub object: Article,
+    #[serde(rename = "type")]
+    pub kind: CreateOrUpdateType,
+    pub id: Url,
+}
+
+impl CreateOrUpdateArticle {
+    pub async fn send_to_local_followers(
+        article: DbArticle,
+        kind: CreateOrUpdateType,
+        data: &Data<DatabaseHandle>,
+    ) -> MyResult<()> {
+        let local_instance = data.local_instance();
+        let to = local_instance
+            .followers
+            .iter()
+            .map(|f| f.ap_id.inner().clone())
+            .collect();
+        let object = article.clone().into_json(data).await?;
+        let id = generate_object_id(local_instance.ap_id.inner())?;
+        let create_or_update = CreateOrUpdateArticle {
+            actor: local_instance.ap_id.clone(),
+            to,
+            object,
+            kind,
+            id,
+        };
+        let inboxes = local_instance
+            .followers
+            .iter()
+            .map(|f| f.inbox.clone())
+            .collect();
+        local_instance.send(create_or_update, inboxes, data).await?;
+        Ok(())
+    }
+}
+#[async_trait::async_trait]
+impl ActivityHandler for CreateOrUpdateArticle {
+    type DataType = DatabaseHandle;
+    type Error = crate::error::Error;
+
+    fn id(&self) -> &Url {
+        &self.id
+    }
+
+    fn actor(&self) -> &Url {
+        self.actor.inner()
+    }
+
+    async fn verify(&self, _data: &Data<Self::DataType>) -> Result<(), Self::Error> {
+        Ok(())
+    }
+
+    async fn receive(self, data: &Data<Self::DataType>) -> Result<(), Self::Error> {
+        DbArticle::from_json(self.object, data).await?;
+        Ok(())
+    }
+}

src/federation/activities/follow.rs

@@ -50,15 +50,14 @@ impl ActivityHandler for Follow {
     }
 
     async fn receive(self, data: &Data<Self::DataType>) -> Result<(), Self::Error> {
-        dbg!(&self);
+        let actor = self.actor.dereference(data).await?;
         // add to followers
         let local_instance = {
             let mut lock = data.instances.lock().unwrap();
             let local_instance = lock.iter_mut().find(|i| i.1.local).unwrap().1;
-            local_instance.followers.push(self.actor.inner().clone());
+            local_instance.followers.push(actor);
             local_instance.clone()
         };
-        dbg!(&local_instance.followers.len());
 
         // send back an accept
         let follower = self.actor.dereference(data).await?;

src/federation/activities/mod.rs

@@ -1,2 +1,3 @@
 pub mod accept;
+pub mod create_or_update_article;
 pub mod follow;

src/federation/objects/instance.rs

@@ -23,7 +23,7 @@ pub struct DbInstance {
     pub(crate) public_key: String,
     pub(crate) private_key: Option<String>,
     pub(crate) last_refreshed_at: DateTime<Utc>,
-    pub followers: Vec<Url>,
+    pub followers: Vec<DbInstance>,
     pub follows: Vec<Url>,
     pub local: bool,
 }
@@ -40,10 +40,6 @@ pub struct Instance {
 }
 
 impl DbInstance {
-    pub fn followers(&self) -> &Vec<Url> {
-        &self.followers
-    }
-
     pub fn followers_url(&self) -> Result<Url, Error> {
         Ok(Url::parse(&format!("{}/followers", self.ap_id.inner()))?)
     }

src/federation/routes.rs

@@ -11,6 +11,7 @@ use activitypub_federation::protocol::context::WithContext;
 use activitypub_federation::traits::Object;
 use activitypub_federation::traits::{ActivityHandler, Collection};
 
+use crate::federation::activities::create_or_update_article::CreateOrUpdateArticle;
 use crate::federation::objects::articles_collection::{ArticleCollection, DbArticleCollection};
 use axum::response::IntoResponse;
 use axum::routing::{get, post};
@@ -50,6 +51,7 @@ async fn http_get_articles(
 pub enum InboxActivities {
     Follow(Follow),
     Accept(Accept),
+    CreateOrUpdateArticle(CreateOrUpdateArticle),
 }
 
 #[debug_handler]

tests/common.rs

@@ -1,10 +1,13 @@
+use fediwiki::api::{FollowInstance, ResolveObject};
 use fediwiki::error::MyResult;
+use fediwiki::federation::objects::instance::DbInstance;
 use once_cell::sync::Lazy;
 use reqwest::Client;
 use serde::de::Deserialize;
 use serde::ser::Serialize;
 use std::sync::Once;
 use tracing::log::LevelFilter;
+use url::Url;
 
 pub static CLIENT: Lazy<Client> = Lazy::new(Client::new);
 
@@ -51,3 +54,37 @@ where
         .json()
         .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 {
+        id: Url::parse(&format!("http://{}", followed_instance))?,
+    };
+    let beta_instance_resolved: DbInstance =
+        get_query(followed_instance, "resolve_object", Some(resolve_form)).await?;
+
+    // send follow
+    let follow_form = FollowInstance {
+        instance_id: beta_instance_resolved.ap_id,
+    };
+    // cant use post helper because follow doesnt return json
+    CLIENT
+        .post(format!("http://{}/api/v1/instance/follow", follow_instance))
+        .form(&follow_form)
+        .send()
+        .await?;
+    Ok(())
+}

tests/test.rs

@@ -2,9 +2,9 @@ extern crate fediwiki;
 
 mod common;
 
-use crate::common::{get_query, post, setup, CLIENT};
+use crate::common::{follow_instance, get_query, patch, post, setup};
 use common::get;
-use fediwiki::api::{CreateArticle, FollowInstance, GetArticle, ResolveObject};
+use fediwiki::api::{CreateArticle, EditArticle, GetArticle, ResolveObject};
 use fediwiki::error::MyResult;
 use fediwiki::federation::objects::article::DbArticle;
 use fediwiki::federation::objects::instance::DbInstance;
@@ -69,23 +69,7 @@ async fn test_follow_instance() -> MyResult<()> {
     let beta_instance: DbInstance = get(hostname_beta, "instance").await?;
     assert_eq!(0, beta_instance.followers.len());
 
-    // fetch beta instance on alpha
-    let resolve_object = ResolveObject {
-        id: Url::parse(&format!("http://{hostname_beta}"))?,
-    };
-    let beta_instance_resolved: DbInstance =
-        get_query(hostname_beta, "resolve_object", Some(resolve_object)).await?;
-
-    // send follow
-    let follow_instance = FollowInstance {
-        instance_id: beta_instance_resolved.ap_id,
-    };
-    // cant use post helper because follow doesnt return json
-    CLIENT
-        .post(format!("http://{hostname_alpha}/api/v1/instance/follow"))
-        .form(&follow_instance)
-        .send()
-        .await?;
+    common::follow_instance(hostname_alpha, &hostname_beta).await?;
 
     // check that follow was federated
     let beta_instance: DbInstance = get(hostname_beta, "instance").await?;
@@ -155,3 +139,57 @@ async fn test_synchronize_articles() -> MyResult<()> {
     handle_beta.abort();
     Ok(())
 }
+
+#[tokio::test]
+#[serial]
+async fn test_federate_article_changes() -> MyResult<()> {
+    setup();
+    let hostname_alpha = "localhost:8131";
+    let hostname_beta = "localhost:8132";
+    let handle_alpha = tokio::task::spawn(async {
+        start(hostname_alpha).await.unwrap();
+    });
+    let handle_beta = tokio::task::spawn(async {
+        start(hostname_beta).await.unwrap();
+    });
+
+    follow_instance(hostname_alpha, hostname_beta).await?;
+
+    // create new article
+    let create_form = CreateArticle {
+        title: "Manu_Chao".to_string(),
+        text: "Lorem ipsum".to_string(),
+    };
+    let create_res: DbArticle = post(hostname_beta, "article", &create_form).await?;
+    assert_eq!(create_res.title, create_form.title);
+
+    // article should be federated to alpha
+    let get_article = GetArticle {
+        title: create_res.title.clone(),
+    };
+    let get_res =
+        get_query::<DbArticle, _>(hostname_alpha, "article", Some(get_article.clone())).await?;
+    assert_eq!(create_res.title, get_res.title);
+    assert_eq!(create_res.text, get_res.text);
+
+    // edit the article
+    let edit_form = EditArticle {
+        ap_id: create_res.ap_id,
+        new_text: "Lorem Ipsum 2".to_string(),
+    };
+    let edit_res: DbArticle = patch(hostname_beta, "article", &edit_form).await?;
+    assert_eq!(edit_res.text, edit_form.new_text);
+
+    // edit should be federated to alpha
+    let get_article = GetArticle {
+        title: edit_res.title.clone(),
+    };
+    let get_res =
+        get_query::<DbArticle, _>(hostname_alpha, "article", Some(get_article.clone())).await?;
+    assert_eq!(edit_res.title, get_res.title);
+    assert_eq!(edit_res.text, get_res.text);
+
+    handle_alpha.abort();
+    handle_beta.abort();
+    Ok(())
+}