Merge pull request #188 from fakeshadow/pool

[features] add `pool` crate feature

Author: weiznich

CHANGELOG.md

@@ -6,6 +6,8 @@ for Rust libraries in [RFC #1105](https://github.com/rust-lang/rfcs/blob/master/
 
 ## [Unreleased]
 
+* Add crate feature `pool` for extending connection pool implements through external crate
+
 ## [0.5.0] - 2024-07-19
 
 * Added type `diesel_async::pooled_connection::mobc::PooledConnection`

Cargo.toml

@@ -60,10 +60,11 @@ postgres = ["diesel/postgres_backend", "tokio-postgres", "tokio", "tokio/rt"]
 sqlite = ["diesel/sqlite", "sync-connection-wrapper"]
 sync-connection-wrapper = ["tokio/rt"]
 async-connection-wrapper = ["tokio/net"]
-r2d2 = ["diesel/r2d2"]
-bb8 = ["dep:bb8"]
-mobc = ["dep:mobc"]
-deadpool = ["dep:deadpool"]
+pool = []
+r2d2 = ["pool", "diesel/r2d2"]
+bb8 = ["pool", "dep:bb8"]
+mobc = ["pool", "dep:mobc"]
+deadpool = ["pool", "dep:deadpool"]
 
 [[test]]
 name = "integration_tests"

src/lib.rs

@@ -86,12 +86,7 @@ pub mod async_connection_wrapper;
 mod mysql;
 #[cfg(feature = "postgres")]
 pub mod pg;
-#[cfg(any(
-    feature = "deadpool",
-    feature = "bb8",
-    feature = "mobc",
-    feature = "r2d2"
-))]
+#[cfg(feature = "pool")]
 pub mod pooled_connection;
 mod run_query_dsl;
 #[cfg(any(feature = "postgres", feature = "mysql"))]

src/pooled_connection/mod.rs

@@ -119,6 +119,7 @@ where
 /// * [deadpool](self::deadpool)
 /// * [bb8](self::bb8)
 /// * [mobc](self::mobc)
+#[allow(dead_code)]
 pub struct AsyncDieselConnectionManager<C> {
     connection_url: String,
     manager_config: ManagerConfig<C>,