icefun/hyper/src/server/shutdown.rs
2023-03-07 14:08:47 +01:00

74 lines
2.6 KiB
Rust

use std::error::Error as StdError;
use pin_project_lite::pin_project;
use tokio::io::{AsyncRead, AsyncWrite};
use tracing::debug;
use super::accept::Accept;
use super::conn::UpgradeableConnection;
use super::server::{Server, Watcher};
use crate::body::{Body, HttpBody};
use crate::common::drain::{self, Draining, Signal, Watch, Watching};
use crate::common::exec::{ConnStreamExec, NewSvcExec};
use crate::common::{task, Future, Pin, Poll, Unpin};
use crate::service::{HttpService, MakeServiceRef};
pin_project! {
#[allow(missing_debug_implementations)] pub struct Graceful < I, S, F, E > { #[pin]
state : State < I, S, F, E >, }
}
pin_project! {
#[project = StateProj] pub (super) enum State < I, S, F, E > { Running { drain :
Option < (Signal, Watch) >, #[pin] server : Server < I, S, E >, #[pin] signal : F, },
Draining { draining : Draining }, }
}
impl<I, S, F, E> Graceful<I, S, F, E> {
pub(super) fn new(server: Server<I, S, E>, signal: F) -> Self {
loop {}
}
}
impl<I, IO, IE, S, B, F, E> Future for Graceful<I, S, F, E>
where
I: Accept<Conn = IO, Error = IE>,
IE: Into<Box<dyn StdError + Send + Sync>>,
IO: AsyncRead + AsyncWrite + Unpin + Send + 'static,
S: MakeServiceRef<IO, Body, ResBody = B>,
S::Error: Into<Box<dyn StdError + Send + Sync>>,
B: HttpBody + 'static,
B::Error: Into<Box<dyn StdError + Send + Sync>>,
F: Future<Output = ()>,
E: ConnStreamExec<<S::Service as HttpService<Body>>::Future, B>,
E: NewSvcExec<IO, S::Future, S::Service, E, GracefulWatcher>,
{
type Output = crate::Result<()>;
fn poll(self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> Poll<Self::Output> {
loop {}
}
}
#[allow(missing_debug_implementations)]
#[derive(Clone)]
pub struct GracefulWatcher(Watch);
impl<I, S, E> Watcher<I, S, E> for GracefulWatcher
where
I: AsyncRead + AsyncWrite + Unpin + Send + 'static,
S: HttpService<Body>,
E: ConnStreamExec<S::Future, S::ResBody>,
S::ResBody: 'static,
<S::ResBody as HttpBody>::Error: Into<Box<dyn StdError + Send + Sync>>,
{
type Future = Watching<
UpgradeableConnection<I, S, E>,
fn(Pin<&mut UpgradeableConnection<I, S, E>>),
>;
fn watch(&self, conn: UpgradeableConnection<I, S, E>) -> Self::Future {
loop {}
}
}
fn on_drain<I, S, E>(conn: Pin<&mut UpgradeableConnection<I, S, E>>)
where
S: HttpService<Body>,
S::Error: Into<Box<dyn StdError + Send + Sync>>,
I: AsyncRead + AsyncWrite + Unpin,
S::ResBody: HttpBody + 'static,
<S::ResBody as HttpBody>::Error: Into<Box<dyn StdError + Send + Sync>>,
E: ConnStreamExec<S::Future, S::ResBody>,
{
loop {}
}