sark-h2 0.28.3

Fiber-free HTTP/2 protocol primitives and manifold server for sark
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
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156

use dope::{core::driver::route::Identity, manifold::network::listener::conn, net::wire};
use o3::mem::quota;
use sark_core::{
    decode::{self, request},
    manifold::{server::app as semantic, task::app::Runtime},
};
use sark_http::field::metadata::section::rules;

use crate::{
    conn::Error,
    server::{
        response::Handoff,
        runtime::app::Fault,
        state::Transitions,
        task::{
            Borrowed, Build, Target,
            app::{
                header::admit::Begin,
                turn::{Availability, Outcome, Turn, guard::Guard},
            },
            service, works,
        },
    },
};

pub(in crate::server::task::app) trait Schedule<'d, R>:
    works::Family + Begin<'d, R>
where
    R: Runtime<'d>,
{
    fn admit<ID: Identity + 'd, Q, W, A, P>(
        graph: &mut Self::Graph,
        turn: &mut Turn<'_, '_, '_, 'd, ID, R, Q, W, A, P>,
    ) -> quota::Admission<Result<Outcome, semantic::Error<Error, A::Failure>>>
    where
        R: Runtime<'d, Target = Target<'d, ID>>,
        Q: Transitions<conn::Id<'d, ID>>,
        Q::Retention: Handoff,
        W: wire::Spec,
        A: service::Select<R>
            + semantic::Application<'d, service::Connection<'d, A>, conn::Id<'d, ID>>,
        P: Fault<'d, W, A::Failure, ID, Build<A::Build>>;

    fn account(graph: &mut Self::Graph);

    fn has_pending<F: rules::Policy>(state: &mut Borrowed<'_, 'd, R, F>) -> Availability;

    fn has_local<F: rules::Policy>(state: &mut Borrowed<'_, 'd, R, F>) -> Availability {
        Self::has_pending(state)
    }

    fn is_ready<F: rules::Policy>(state: &mut Borrowed<'_, 'd, R, F>) -> Availability {
        match Self::has_local(state) {
            Availability::Ready => Availability::Ready,
            Availability::Idle if state.has_events() || state.responses.has_runnable() => {
                Availability::Ready
            }
            Availability::Idle => Availability::Idle,
        }
    }
}

impl<'d, R, U> Schedule<'d, R> for request::Plain<U>
where
    R: Runtime<'d>,
    R::Head: request::Head<Start = request::Plain<U>>,
    request::Plain<U>: Begin<'d, R>,
{
    fn admit<ID: Identity + 'd, Q, W, A, P>(
        graph: &mut Self::Graph,
        turn: &mut Turn<'_, '_, '_, 'd, ID, R, Q, W, A, P>,
    ) -> quota::Admission<Result<Outcome, semantic::Error<Error, A::Failure>>>
    where
        R: Runtime<'d, Target = Target<'d, ID>>,
        Q: Transitions<conn::Id<'d, ID>>,
        Q::Retention: Handoff,
        W: wire::Spec,
        A: service::Select<R>
            + semantic::Application<'d, service::Connection<'d, A>, conn::Id<'d, ID>>,
        P: Fault<'d, W, A::Failure, ID, Build<A::Build>>,
    {
        graph.admit(|source| match source {
            works::Plain::Build => turn.build(),
            works::Plain::Task => turn.task(),
            works::Plain::Ingress => turn.ingress(),
            works::Plain::Egress => {
                let pump = turn.pump();
                turn.egress(pump)
            }
        })
    }

    fn account(graph: &mut Self::Graph) {
        graph.account(works::Plain::Egress);
    }

    fn has_pending<F: rules::Policy>(state: &mut Borrowed<'_, 'd, R, F>) -> Availability {
        if state.build_ready.is_empty() {
            Availability::Idle
        } else {
            Availability::Ready
        }
    }
}

impl<'d, R, S> Schedule<'d, R> for S
where
    R: Runtime<'d> + decode::Guarded,
    R::Head: request::Head<Start = S>,
    S: Guard + works::Family<Graph = works::GuardedGraph> + Begin<'d, R>,
{
    fn admit<ID: Identity + 'd, Q, W, A, P>(
        graph: &mut Self::Graph,
        turn: &mut Turn<'_, '_, '_, 'd, ID, R, Q, W, A, P>,
    ) -> quota::Admission<Result<Outcome, semantic::Error<Error, A::Failure>>>
    where
        R: Runtime<'d, Target = Target<'d, ID>>,
        Q: Transitions<conn::Id<'d, ID>>,
        Q::Retention: Handoff,
        W: wire::Spec,
        A: service::Select<R>
            + semantic::Application<'d, service::Connection<'d, A>, conn::Id<'d, ID>>,
        P: Fault<'d, W, A::Failure, ID, Build<A::Build>>,
    {
        graph.admit(|source| match source {
            works::Guarded::Admission => turn.admission(),
            works::Guarded::Build => turn.build(),
            works::Guarded::Task => turn.task(),
            works::Guarded::Ingress => turn.ingress(),
            works::Guarded::Egress => {
                let pump = turn.guarded_pump();
                turn.egress(pump)
            }
        })
    }

    fn account(graph: &mut Self::Graph) {
        graph.account(works::Guarded::Egress);
    }

    fn has_pending<F: rules::Policy>(state: &mut Borrowed<'_, 'd, R, F>) -> Availability {
        if state.admission_ready.is_empty() && state.build_ready.is_empty() {
            Availability::Idle
        } else {
            Availability::Ready
        }
    }

    fn has_local<F: rules::Policy>(state: &mut Borrowed<'_, 'd, R, F>) -> Availability {
        if state.can_admit() || !state.build_ready.is_empty() {
            Availability::Ready
        } else {
            Availability::Idle
        }
    }
}