Struct PoolState 

pub struct PoolState { /* private fields */ }

连接池的 actix-web 应用数据包装

Pool 内部使用 Arc 共享，PoolState 提供轻量级 Clone， 便于在 App::app_data 中注册，并实现 FromRequest 以便在 handler 中提取。

Implementations

impl PoolState

pub fn new(pool: Pool) -> Self

创建 PoolState

pub fn from_arc(pool: Arc<Pool>) -> Self

从 Arc<Pool> 创建（避免重复 Arc 包装）

pub fn pool(&self) -> &Pool

获取连接池引用

Trait Implementations

impl Clone for PoolState

fn clone(&self) -> PoolState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl FromRequest for PoolState

type Error = Error

The associated error which can be returned.

type Future = Ready<Result<PoolState, <PoolState as FromRequest>::Error>>

Future that resolves to a Self.

fn from_request(req: &HttpRequest, _: &mut Payload) -> Self::Future

Create a Self from request parts asynchronously.

fn extract(req: &HttpRequest) -> Self::Future

Create a Self from request head asynchronously.