Working on sync 2 more

server/Cargo.lock

@@ -832,7 +832,7 @@ dependencies = [
 
 [[package]]
 name = "diesel"
-version = "1.4.3"
+version = "1.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1416,13 +1416,14 @@ dependencies = [
  "actix 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "actix-files 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "actix-rt 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "actix-threadpool 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "actix-web 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "actix-web-actors 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bcrypt 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "comrak 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "config 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "diesel 1.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "diesel 1.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "diesel_migrations 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "dotenv 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1436,6 +1437,7 @@ dependencies = [
  "lettre_email 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "percent-encoding 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "r2d2 0.8.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rss 1.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1589,7 +1591,7 @@ name = "migrations_internals"
 version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "diesel 1.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "diesel 1.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -3050,7 +3052,7 @@ dependencies = [
 "checksum derive_builder 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a2658621297f2cf68762a6f7dc0bb7e1ff2cfd6583daef8ee0fed6f7ec468ec0"
 "checksum derive_builder_core 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2791ea3e372c8495c0bc2033991d76b512cd799d07491fbd6890124db9458bef"
 "checksum derive_more 0.99.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a806e96c59a76a5ba6e18735b6cf833344671e61e7863f2edb5c518ea2cac95c"
-"checksum diesel 1.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "9d7cc03b910de9935007861dce440881f69102aaaedfd4bc5a6f40340ca5840c"
+"checksum diesel 1.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "33d7ca63eb2efea87a7f56a283acc49e2ce4b2bd54adf7465dc1d81fef13d8fc"
 "checksum diesel_derives 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "45f5098f628d02a7a0f68ddba586fb61e80edec3bdc1be3b921f4ceec60858d3"
 "checksum diesel_migrations 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bf3cde8413353dc7f5d72fa8ce0b99a560a359d2c5ef1e5817ca731cd9008f4c"
 "checksum digest 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f3d0c8c8752312f9713efd397ff63acb9f85585afbf179282e720e7704954dd5"

server/Cargo.toml

@@ -5,7 +5,8 @@ authors = ["Dessalines <happydooby@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-diesel = { version = "1.4.2", features = ["postgres","chrono", "r2d2", "64-column-tables"] }
+diesel = { version = "1.4.4", features = ["postgres","chrono", "r2d2", "64-column-tables"] }
+r2d2 = "0.8.8"
 diesel_migrations = "1.4.0"
 dotenv = "0.15.0"
 bcrypt = "0.6.2"
@@ -19,6 +20,7 @@ actix-web = "2.0.0"
 actix-files = "0.2.1"
 actix-web-actors = "2.0.0"
 actix-rt = "1.0.0"
+actix-threadpool = "0.3.1"
 log = "0.4.0"
 env_logger = "0.7.1"
 rand = "0.7.3"

server/src/lib.rs

@@ -47,6 +47,13 @@ use rand::distributions::Alphanumeric;
 use rand::{thread_rng, Rng};
 use regex::{Regex, RegexBuilder};
 use serde::Deserialize;
+use actix_threadpool::{run, BlockingError};
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use failure::Error;
+use std::fmt::Debug;
 
 pub fn to_datetime_utc(ndt: NaiveDateTime) -> DateTime<Utc> {
   DateTime::<Utc>::from_utc(ndt, Utc)
@@ -224,6 +231,39 @@ pub fn markdown_to_html(text: &str) -> String {
   comrak::markdown_to_html(text, &comrak::ComrakOptions::default())
 }
 
+#[derive(Clone)]
+pub struct DbHandle(Pool<ConnectionManager<PgConnection>>);
+
+impl DbHandle {
+  /// Start the DbActor with a SyncArbiter.
+  pub fn start(settings: &Settings) -> Result<Self, Error> {
+
+    // Set up the r2d2 connection pool
+    let manager = ConnectionManager::<PgConnection>::new(&settings.get_database_url());
+    let pool = Pool::builder()
+      .max_size(settings.database.pool_size)
+      .build(manager)
+      .unwrap_or_else(|_| panic!("Error connecting to {}", settings.get_database_url()));
+
+      Ok(DbHandle(pool))
+  }
+
+  pub async fn run<F, T, E>(&self, f: F) -> Result<T, BlockingError<E>>
+  where
+      F: FnOnce(&PgConnection) -> Result<T, E> + Send + 'static,
+      T: Send + 'static,
+      E: Debug + From<r2d2::Error> + Send + 'static,
+      {
+        let pool = self.0.clone();
+        run(move || {
+          let conn = pool.get()?;
+
+          (f)(&conn)
+        })
+        .await
+      }
+}
+
 #[cfg(test)]
 mod tests {
   use crate::{extract_usernames, is_email_regex, remove_slurs, slur_check, slurs_vec_to_str};

server/src/main.rs

@@ -4,33 +4,28 @@ extern crate diesel_migrations;
 
 use actix::prelude::*;
 use actix_web::*;
-use diesel::r2d2::{ConnectionManager, Pool};
-use diesel::PgConnection;
 use lemmy_server::routes::{api, federation, feeds, index, nodeinfo, webfinger, websocket};
 use lemmy_server::settings::Settings;
 use lemmy_server::websocket::server::*;
+use lemmy_server::db::establish_unpooled_connection;
+use lemmy_server::DbHandle;
 use std::io;
 
 embed_migrations!();
 
+
 #[actix_rt::main]
 async fn main() -> io::Result<()> {
   env_logger::init();
   let settings = Settings::get();
 
-  // Set up the r2d2 connection pool
-  let manager = ConnectionManager::<PgConnection>::new(&settings.get_database_url());
-  let pool = Pool::builder()
-    .max_size(settings.database.pool_size)
-    .build(manager)
-    .unwrap_or_else(|_| panic!("Error connecting to {}", settings.get_database_url()));
+  let db_handle = DbHandle::start(&settings).unwrap();
 
   // Run the migrations from code
-  let conn = pool.get().unwrap();
-  embedded_migrations::run(&conn).unwrap();
+  embedded_migrations::run(&establish_unpooled_connection()).unwrap();
 
   // Set up websocket server
-  let server = ChatServer::startup(pool.clone()).start();
+  let server = ChatServer::startup(db_handle.clone()).start();
 
   println!(
     "Starting http server at {}:{}",
@@ -42,7 +37,7 @@ async fn main() -> io::Result<()> {
     let settings = Settings::get();
     App::new()
       .wrap(middleware::Logger::default())
-      .data(pool.clone())
+      .data(db_handle.clone())
       .data(server.clone())
       // The routes
       .configure(api::config)

server/src/routes/websocket.rs

@@ -100,6 +100,7 @@ impl Handler<WSMessage> for WSSession {
   type Result = ();
 
   fn handle(&mut self, msg: WSMessage, ctx: &mut Self::Context) {
+    info!("Message sent out: {}", msg.0);
     ctx.text(msg.0);
   }
 }
@@ -142,6 +143,8 @@ impl StreamHandler<Result<ws::Message, ws::ProtocolError>> for WSSession {
             }
             actix::fut::ready(())
           })
+          // Testing out spawn instead of wait
+          // .spawn(ctx);
           .wait(ctx);
       }
       ws::Message::Binary(_bin) => info!("Unexpected binary"),

server/src/websocket/server.rs

@@ -22,7 +22,7 @@ use crate::api::site::*;
 use crate::api::user::*;
 use crate::api::*;
 use crate::websocket::UserOperation;
-use crate::Settings;
+use crate::{Settings, DbHandle};
 
 type ConnectionId = usize;
 type PostId = i32;
@@ -53,7 +53,7 @@ pub struct Disconnect {
   pub ip: IPAddr,
 }
 
-#[derive(Serialize, Deserialize, Message)]
+#[derive(Serialize, Deserialize, Message, Clone)]
 #[rtype(String)]
 pub struct StandardMessage {
   /// Id of the client session
@@ -82,6 +82,7 @@ pub enum RateLimitType {
 
 /// `ChatServer` manages chat rooms and responsible for coordinating chat
 /// session.
+#[derive(Clone)]
 pub struct ChatServer {
   /// A map from generated random ID to session addr
   sessions: HashMap<ConnectionId, SessionInfo>,
@@ -99,20 +100,18 @@ pub struct ChatServer {
   /// Rate limiting based on rate type and IP addr
   rate_limit_buckets: HashMap<RateLimitType, HashMap<IPAddr, RateLimitBucket>>,
 
-  rng: ThreadRng,
-  db: Pool<ConnectionManager<PgConnection>>,
+  db_handle: DbHandle,
 }
 
 impl ChatServer {
-  pub fn startup(db: Pool<ConnectionManager<PgConnection>>) -> ChatServer {
+  pub fn startup(db_handle: DbHandle) -> ChatServer {
     ChatServer {
       sessions: HashMap::new(),
       rate_limit_buckets: HashMap::new(),
       post_rooms: HashMap::new(),
       community_rooms: HashMap::new(),
       user_rooms: HashMap::new(),
-      rng: rand::thread_rng(),
-      db,
+      db_handle,
     }
   }
 
@@ -387,7 +386,7 @@ impl Handler<Connect> for ChatServer {
 
   fn handle(&mut self, msg: Connect, _ctx: &mut Context<Self>) -> Self::Result {
     // register session with random id
-    let id = self.rng.gen::<usize>();
+    let id = ThreadRng::default().gen::<usize>();
     info!("{} joined", &msg.ip);
 
     self.sessions.insert(
@@ -444,21 +443,35 @@ impl Handler<Disconnect> for ChatServer {
   }
 }
 
+// type DeferredStandardMessage = MessageResult<StandardMessage>;
+
 /// Handler for Message message.
 impl Handler<StandardMessage> for ChatServer {
-  type Result = MessageResult<StandardMessage>;
+  // type Result = MessageResult<StandardMessage>;
+  type Result = ResponseActFuture<Self, MessageResult<StandardMessage>>;
 
-  fn handle(&mut self, msg: StandardMessage, _: &mut Context<Self>) -> Self::Result {
-    match parse_json_message(self, msg) {
-      Ok(m) => {
-        info!("Message Sent: {}", m);
-        MessageResult(m)
-      }
-      Err(e) => {
-        error!("Error during message handling {}", e);
-        MessageResult(e.to_string())
-      }
+  fn handle(&mut self, msg: StandardMessage, ctx: &mut Context<Self>) -> Self::Result {
+
+    Box::new(async move {
+      self.db_handle.run(|conn| {
+        parse_json_message(self, msg, &conn)
+      });
     }
+    .into_actor(self).map(|res, actor, ctx| {
+      // match res {
+      //   Ok(m) => {
+      //     info!("Message Sent: {}", m);
+      //     MessageResult(m);
+      //       Ok(())
+      //   },
+      //   Err(e) => {
+      //     error!("Error during message handling {}", e);
+      //     MessageResult(e.to_string());
+      //       Err(())
+      //   },
+      // Ok(())
+      MessageResult("hi".to_string())
+    }))
   }
 }
 
@@ -494,14 +507,13 @@ where
   to_json_string(&op, &res)
 }
 
-fn parse_json_message(chat: &mut ChatServer, msg: StandardMessage) -> Result<String, Error> {
+fn parse_json_message(chat: &mut ChatServer, msg: StandardMessage, conn: &PgConnection) -> Result<String, Error> {
   let json: Value = serde_json::from_str(&msg.msg)?;
   let data = &json["data"].to_string();
   let op = &json["op"].as_str().ok_or(APIError {
     message: "Unknown op type".to_string(),
   })?;
 
-  let conn = chat.db.get()?;
 
   let user_operation: UserOperation = UserOperation::from_str(&op)?;