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nora 2022-09-15 22:45:03 +02:00
parent 292ba1a477
commit 22d798bb53
1 changed files with 20 additions and 25 deletions
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45
tower/src/lib.rs
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@ -9,7 +9,7 @@ pub trait Stream {
impl<P> Stream for Pin<P>
where
P: DerefMut + Unpin,
P: DerefMut,
P::Target: Stream,
{
type Item = <P::Target as Stream>::Item;
@ -29,9 +29,7 @@ where
pub type BoxError = ();
pub trait Discover {
type Key;
type Service;
type Error;
}
impl<K, S, D: ?Sized> Discover for D
@ -39,9 +37,7 @@ where
D: TryStream<Ok = (K, S)>,
K: Eq,
{
type Key = K;
type Service = S;
type Error = ();
}
pub trait Service<Request> {
@ -49,7 +45,7 @@ pub trait Service<Request> {
type Future;
}
pub trait MakeService<Target, Request> {
pub trait MakeService<Request> {
type Response;
type Error;
type Service: Service<Request, Error = Self::Error>;
@ -76,54 +72,53 @@ impl<D, Req> Service<Req> for Balance<D, Req> {
type Future = std::future::Ready<()>;
}
pub struct PoolDiscoverer<MS, Target, Request>
pub struct PoolDiscoverer<MS, Request>
where
MS: MakeService<Target, Request>,
MS: MakeService<Request>,
{
_p: PhantomData<(MS, Target, Request)>,
_p: PhantomData<(MS, Request)>,
}
impl<MS, Target, Request> Stream for PoolDiscoverer<MS, Target, Request>
impl<MS, Request> Stream for PoolDiscoverer<MS, Request>
where
MS: MakeService<Target, Request>,
MS: MakeService<Request>,
{
type Item = (usize, DropNotifyService<MS::Service>);
type Item = (usize, SvcWrap<MS::Service>);
}
pub struct Builder {}
impl Builder {
pub fn build<MS, Target, Request>()
pub fn build<MS, Request>()
where
MS: MakeService<Target, Request>,
MS: MakeService<Request>,
MS::Error: Into<crate::BoxError>,
{
let d: PoolDiscoverer<MS, Target, Request> = todo!();
let d: PoolDiscoverer<MS, Request> = todo!();
// THE CRITICAL STATEMENT
let _ = Balance::new(Box::pin(d));
let _ = Balance::new(Box::pin(d));
}
}
pub struct Pool<MS, Target, Request> {
balance: (MS, Target, Request),
pub struct Pool<MS, Request> {
balance: (MS, Request),
}
impl<MS, Target, Req> Service<Req> for Pool<MS, Target, Req>
impl<MS, Req> Service<Req> for Pool<MS, Req>
where
MS: MakeService<Target, Req>,
MS: MakeService<Req>,
MS::Error: Into<crate::BoxError>,
Target: Clone,
{
type Error = <Balance<PoolDiscoverer<MS, Target, Req>, Req> as Service<Req>>::Error;
type Future = <Balance<PoolDiscoverer<MS, Target, Req>, Req> as Service<Req>>::Future;
type Error = <Balance<PoolDiscoverer<MS, Req>, Req> as Service<Req>>::Error;
type Future = <Balance<PoolDiscoverer<MS, Req>, Req> as Service<Req>>::Future;
}
pub struct DropNotifyService<Svc> {
pub struct SvcWrap<Svc> {
svc: Svc,
}
impl<Request, Svc: Service<Request>> Service<Request> for DropNotifyService<Svc> {
impl<Request, Svc: Service<Request>> Service<Request> for SvcWrap<Svc> {
type Future = Svc::Future;
type Error = Svc::Error;
}