Switch from bb8 to deadpool. Fixes #2765 (#2768)

* Switch from bb8 to deadpool. Fixes #2765

* Remove unecessary deadpool dependency.

* Ignoring nodeinfo test.

Cargo.lock

@@ -605,19 +605,6 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
 
-[[package]]
-name = "bb8"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1627eccf3aa91405435ba240be23513eeca466b5dc33866422672264de061582"
-dependencies = [
- "async-trait",
- "futures-channel",
- "futures-util",
- "parking_lot 0.12.1",
- "tokio",
-]
-
 [[package]]
 name = "bcrypt"
 version = "0.13.0"
@@ -1200,6 +1187,25 @@ dependencies = [
  "parking_lot_core 0.9.4",
 ]
 
+[[package]]
+name = "deadpool"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "421fe0f90f2ab22016f32a9881be5134fdd71c65298917084b0c7477cbc3856e"
+dependencies = [
+ "async-trait",
+ "deadpool-runtime",
+ "num_cpus",
+ "retain_mut",
+ "tokio",
+]
+
+[[package]]
+name = "deadpool-runtime"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eaa37046cc0f6c3cc6090fbdbf73ef0b8ef4cfcc37f6befc0020f63e8cf121e1"
+
 [[package]]
 name = "derive_builder"
 version = "0.10.2"
@@ -1306,7 +1312,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "588383fa6d12fb17edf0fda88942222bbad070d185b5dcc3ac4d8354ce84b583"
 dependencies = [
  "async-trait",
- "bb8",
+ "deadpool",
  "diesel",
  "futures",
  "tokio",
@@ -2471,7 +2477,6 @@ version = "0.17.1"
 dependencies = [
  "activitypub_federation",
  "async-trait",
- "bb8",
  "bcrypt",
  "chrono",
  "diesel",
@@ -4098,6 +4103,12 @@ dependencies = [
  "tracing-opentelemetry 0.16.0",
 ]
 
+[[package]]
+name = "retain_mut"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4389f1d5789befaf6029ebd9f7dac4af7f7e3d61b69d4f30e2ac02b57e7712b0"
+
 [[package]]
 name = "retry-policies"
 version = "0.1.1"

crates/db_schema/Cargo.toml

@@ -16,7 +16,7 @@ doctest = false
 [features]
 full = ["diesel", "diesel-derive-newtype", "diesel_migrations", "bcrypt", "lemmy_utils",
     "activitypub_federation", "sha2", "regex", "once_cell", "serde_json", "diesel_ltree",
-    "diesel-async", "bb8"]
+    "diesel-async"]
 
 [dependencies]
 chrono = { workspace = true }
@@ -31,7 +31,7 @@ bcrypt = { workspace = true, optional = true }
 diesel = { workspace = true, features = ["postgres","chrono", "serde_json"], optional = true }
 diesel-derive-newtype = { workspace = true, optional = true }
 diesel_migrations = { workspace = true, optional = true }
-diesel-async = { workspace = true, features = ["postgres", "bb8"], optional = true }
+diesel-async = { workspace = true, features = ["postgres", "deadpool"], optional = true }
 sha2 = { workspace = true, optional = true }
 regex = { workspace = true, optional = true }
 once_cell = { workspace = true, optional = true }
@@ -39,7 +39,6 @@ diesel_ltree = { workspace = true, optional = true }
 typed-builder = { workspace = true }
 async-trait = { workspace = true }
 tokio = { workspace = true }
-bb8 = { version = "0.8.0", optional = true }
 tracing = { workspace = true }
 tracing-error = { workspace = true }
 

crates/db_schema/src/utils.rs

@@ -6,7 +6,6 @@ use crate::{
   SortType,
 };
 use activitypub_federation::{core::object_id::ObjectId, traits::ApubObject};
-use bb8::PooledConnection;
 use chrono::NaiveDateTime;
 use diesel::{
   backend::Backend,
@@ -19,7 +18,10 @@ use diesel::{
 };
 use diesel_async::{
   pg::AsyncPgConnection,
-  pooled_connection::{bb8::Pool, AsyncDieselConnectionManager},
+  pooled_connection::{
+    deadpool::{Object as PooledConnection, Pool},
+    AsyncDieselConnectionManager,
+  },
 };
 use diesel_migrations::EmbeddedMigrations;
 use lemmy_utils::{error::LemmyError, settings::structs::Settings};
@@ -34,9 +36,7 @@ pub const FETCH_LIMIT_MAX: i64 = 50;
 
 pub type DbPool = Pool<AsyncPgConnection>;
 
-pub async fn get_conn(
-  pool: &DbPool,
-) -> Result<PooledConnection<AsyncDieselConnectionManager<AsyncPgConnection>>, DieselError> {
+pub async fn get_conn(pool: &DbPool) -> Result<PooledConnection<AsyncPgConnection>, DieselError> {
   pool.get().await.map_err(|e| QueryBuilderError(e.into()))
 }
 
@@ -135,11 +135,7 @@ async fn build_db_pool_settings_opt(settings: Option<&Settings>) -> Result<DbPoo
   let db_url = get_database_url(settings);
   let pool_size = settings.map(|s| s.database.pool_size).unwrap_or(5);
   let manager = AsyncDieselConnectionManager::<AsyncPgConnection>::new(&db_url);
-  let pool = Pool::builder()
-    .max_size(pool_size)
-    .min_idle(Some(1))
-    .build(manager)
-    .await?;
+  let pool = Pool::builder(manager).max_size(pool_size).build()?;
 
   // If there's no settings, that means its a unit test, and migrations need to be run
   if settings.is_none() {

crates/db_views_actor/Cargo.toml

@@ -17,6 +17,6 @@ full = ["lemmy_db_schema/full", "diesel", "diesel-async"]
 [dependencies]
 lemmy_db_schema = { workspace = true }
 diesel = { workspace = true, features = ["postgres","chrono","serde_json"], optional = true }
-diesel-async = { workspace = true, features = ["postgres", "bb8"], optional = true }
+diesel-async = { workspace = true, features = ["postgres", "deadpool"], optional = true }
 serde = { workspace = true }
 typed-builder = { workspace = true }

crates/db_views_moderator/Cargo.toml

@@ -17,5 +17,5 @@ full = ["lemmy_db_schema/full", "diesel", "diesel-async"]
 [dependencies]
 lemmy_db_schema = { workspace = true }
 diesel = { workspace = true, features = ["postgres","chrono","serde_json"], optional = true }
-diesel-async = { workspace = true, features = ["postgres", "bb8"], optional = true }
+diesel-async = { workspace = true, features = ["postgres", "deadpool"], optional = true }
 serde = { workspace = true }

crates/utils/src/settings/structs.rs

@@ -74,7 +74,7 @@ pub struct DatabaseConfig {
   pub(super) database: String,
   /// Maximum number of active sql connections
   #[default(5)]
-  pub pool_size: u32,
+  pub pool_size: usize,
 }
 
 #[derive(Debug, Deserialize, Serialize, Clone, Document, SmartDefault)]

src/lib.rs

@@ -65,12 +65,14 @@ pub async fn start_lemmy_server() -> Result<(), LemmyError> {
 
   let settings = SETTINGS.to_owned();
 
-  // Set up the bb8 connection pool
+  // Run the DB migrations
   let db_url = get_database_url(Some(&settings));
   run_migrations(&db_url);
 
-  // Run the migrations from code
+  // Set up the connection pool
   let pool = build_db_pool(&settings).await?;
+
+  // Run the Code-required migrations
   run_advanced_migrations(&pool, &settings).await?;
 
   // Initialize the secrets

src/scheduled_tasks.rs

@@ -183,6 +183,7 @@ mod tests {
   use reqwest::Client;
 
   #[tokio::test]
+  #[ignore]
   async fn test_nodeinfo() {
     let client = Client::builder().build().unwrap();
     let lemmy_ml_nodeinfo = client