bb8: move State into api module

bb8/src/api.rs

@@ -9,7 +9,6 @@ use async_trait::async_trait;
 
 use crate::inner::PoolInner;
 use crate::internals::Conn;
-pub use crate::internals::State;
 
 /// A generic connection pool.
 pub struct Pool<M>
@@ -45,11 +44,6 @@ impl<M: ManageConnection> Pool<M> {
         Builder::new()
     }
 
-    /// Returns information about the current state of the pool.
-    pub fn state(&self) -> State {
-        self.inner.state()
-    }
-
     /// Retrieves a connection from the pool.
     pub async fn get(&self) -> Result<PooledConnection<'_, M>, RunError<M::Error>> {
         self.inner.get().await
@@ -76,6 +70,21 @@ impl<M: ManageConnection> Pool<M> {
     pub async fn dedicated_connection(&self) -> Result<M::Connection, M::Error> {
         self.inner.connect().await
     }
+
+    /// Returns information about the current state of the pool.
+    pub fn state(&self) -> State {
+        self.inner.state()
+    }
+}
+
+/// Information about the state of a `Pool`.
+#[derive(Debug)]
+#[non_exhaustive]
+pub struct State {
+    /// The number of connections currently being managed by the pool.
+    pub connections: u32,
+    /// The number of idle connections.
+    pub idle_connections: u32,
 }
 
 /// A builder for a connection pool.

bb8/src/inner.rs

@@ -9,8 +9,8 @@ use futures_util::TryFutureExt;
 use tokio::spawn;
 use tokio::time::{interval_at, sleep, timeout, Interval};
 
-use crate::api::{Builder, ConnectionState, ManageConnection, PooledConnection, RunError};
-use crate::internals::{Approval, ApprovalIter, Conn, SharedPool, State};
+use crate::api::{Builder, ConnectionState, ManageConnection, PooledConnection, RunError, State};
+use crate::internals::{Approval, ApprovalIter, Conn, SharedPool};
 
 pub(crate) struct PoolInner<M>
 where
@@ -148,7 +148,7 @@ where
 
     /// Returns information about the current state of the pool.
     pub(crate) fn state(&self) -> State {
-        self.inner.internals.lock().state()
+        (&*self.inner.internals.lock()).into()
     }
 
     // Outside of Pool to avoid borrow splitting issues on self

bb8/src/internals.rs

@@ -5,7 +5,7 @@ use std::time::Instant;
 use crate::{api::QueueStrategy, lock::Mutex};
 use tokio::sync::Notify;
 
-use crate::api::{Builder, ManageConnection};
+use crate::api::{Builder, ManageConnection, State};
 use std::collections::VecDeque;
 
 /// The guts of a `Pool`.
@@ -153,8 +153,11 @@ where
 
         self.dropped((before - self.conns.len()) as u32, config)
     }
+}
 
-    pub(crate) fn state(&self) -> State {
+#[allow(clippy::from_over_into)] // Keep this more private with the internal type
+impl<M: ManageConnection> Into<State> for &PoolInternals<M> {
+    fn into(self) -> State {
         State {
             connections: self.num_conns,
             idle_connections: self.conns.len() as u32,
@@ -245,13 +248,3 @@ impl<C: Send> From<Conn<C>> for IdleConn<C> {
         }
     }
 }
-
-/// Information about the state of a `Pool`.
-#[derive(Debug)]
-#[non_exhaustive]
-pub struct State {
-    /// The number of connections currently being managed by the pool.
-    pub connections: u32,
-    /// The number of idle connections.
-    pub idle_connections: u32,
-}