composable-tower-http 0.3.1

Highly customizable http utilities built on top of tower.
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

use http::HeaderMap;

pub trait BearerExtractor {
    type Error;

    fn extract_bearer<'a>(&self, headers: &'a HeaderMap) -> Result<&'a str, Self::Error>;
}

pub trait BearerExtractorExt: Sized + BearerExtractor {
    fn map_err<Fn>(self, map_err: Fn) -> MapError<Self, Fn>;
}

impl<T> BearerExtractorExt for T
where
    T: Sized + BearerExtractor,
{
    fn map_err<Fn>(self, map_err: Fn) -> MapError<Self, Fn> {
        MapError::new(self, map_err)
    }
}

#[derive(Debug, Clone)]
pub struct MapError<T, Fn> {
    inner: T,
    map_err: Fn,
}

impl<T, Fn> MapError<T, Fn> {
    pub const fn new(inner: T, map_err: Fn) -> Self {
        Self { inner, map_err }
    }
}

impl<B, Fn, E> BearerExtractor for MapError<B, Fn>
where
    B: BearerExtractor + Sync,
    Fn: FnOnce(B::Error) -> E + Clone + Sync,
{
    type Error = E;

    fn extract_bearer<'a>(&self, headers: &'a HeaderMap) -> Result<&'a str, Self::Error> {
        self.inner
            .extract_bearer(headers)
            .map_err(self.map_err.clone())
    }
}