carte 0.3.0

Runs your apps' processes on demand behind *.localhost hostnames, one stack per git worktree
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

use std::pin::Pin;
use std::task::{Context, Poll};

use bytes::Bytes;
use http_body_util::BodyExt;
use http_body_util::combinators::UnsyncBoxBody;
use hyper::body::{Body, Frame, SizeHint};

use super::ActivityGuard;

pub(crate) type BoxError = Box<dyn std::error::Error + Send + Sync>;
pub(crate) type ProxyBody = UnsyncBoxBody<Bytes, BoxError>;

pub(crate) fn boxed<B>(body: B) -> ProxyBody
where
    B: Body<Data = Bytes> + Send + 'static,
    B::Error: Into<BoxError>,
{
    body.map_err(Into::into).boxed_unsync()
}

/// A body that holds an activity guard until it has been streamed to the end
/// or dropped.
pub(crate) struct GuardedBody<B> {
    inner: B,
    guard: Option<Box<dyn ActivityGuard>>,
}

impl<B> GuardedBody<B> {
    pub(crate) fn new(inner: B, guard: Box<dyn ActivityGuard>) -> Self {
        Self {
            inner,
            guard: Some(guard),
        }
    }
}

impl<B: Body + Unpin> Body for GuardedBody<B> {
    type Data = B::Data;
    type Error = B::Error;

    fn poll_frame(
        mut self: Pin<&mut Self>,
        cx: &mut Context<'_>,
    ) -> Poll<Option<Result<Frame<B::Data>, B::Error>>> {
        let polled = Pin::new(&mut self.inner).poll_frame(cx);
        if matches!(polled, Poll::Ready(None | Some(Err(_)))) {
            self.guard = None;
        }
        polled
    }

    fn is_end_stream(&self) -> bool {
        self.inner.is_end_stream()
    }

    fn size_hint(&self) -> SizeHint {
        self.inner.size_hint()
    }
}