actix 0.7.3

Actor framework for Rust
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
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
157
158
159
160

use actor::{Actor, ActorContext, ActorState, AsyncContext, SpawnHandle};
use address::{Addr, AddressReceiver};
use arbiter::Arbiter;
use fut::ActorFuture;

use contextimpl::{AsyncContextParts, ContextFut, ContextParts};
use mailbox::Mailbox;

/// Actor execution context
pub struct Context<A>
where
    A: Actor<Context = Context<A>>,
{
    parts: ContextParts<A>,
    mb: Option<Mailbox<A>>,
}

impl<A> ActorContext for Context<A>
where
    A: Actor<Context = Self>,
{
    #[inline]
    fn stop(&mut self) {
        self.parts.stop()
    }
    #[inline]
    fn terminate(&mut self) {
        self.parts.terminate()
    }
    #[inline]
    fn state(&self) -> ActorState {
        self.parts.state()
    }
}

impl<A> AsyncContext<A> for Context<A>
where
    A: Actor<Context = Self>,
{
    #[inline]
    fn spawn<F>(&mut self, fut: F) -> SpawnHandle
    where
        F: ActorFuture<Item = (), Error = (), Actor = A> + 'static,
    {
        self.parts.spawn(fut)
    }

    #[inline]
    fn wait<F>(&mut self, fut: F)
    where
        F: ActorFuture<Item = (), Error = (), Actor = A> + 'static,
    {
        self.parts.wait(fut)
    }

    #[inline]
    fn waiting(&self) -> bool {
        self.parts.waiting()
    }

    #[inline]
    fn cancel_future(&mut self, handle: SpawnHandle) -> bool {
        self.parts.cancel_future(handle)
    }

    #[inline]
    fn address(&self) -> Addr<A> {
        self.parts.address()
    }
}

impl<A> Context<A>
where
    A: Actor<Context = Self>,
{
    #[inline]
    pub(crate) fn new() -> Context<A> {
        let mb = Mailbox::default();
        Context {
            parts: ContextParts::new(mb.sender_producer()),
            mb: Some(mb),
        }
    }

    #[inline]
    pub fn with_receiver(rx: AddressReceiver<A>) -> Context<A> {
        let mb = Mailbox::new(rx);
        Context {
            parts: ContextParts::new(mb.sender_producer()),
            mb: Some(mb),
        }
    }

    #[inline]
    pub fn run(self, act: A) -> Addr<A> {
        let fut = self.into_future(act);
        let addr = fut.address();
        Arbiter::spawn(fut);
        addr
    }

    pub fn into_future(mut self, act: A) -> ContextFut<A, Self> {
        let mb = self.mb.take().unwrap();
        ContextFut::new(self, act, mb)
    }

    /// Handle of the running future
    ///
    /// SpawnHandle is the handle returned by `AsyncContext::spawn()` method.
    pub fn handle(&self) -> SpawnHandle {
        self.parts.curr_handle()
    }

    /// Set mailbox capacity
    ///
    /// By default mailbox capacity is 16 messages.
    pub fn set_mailbox_capacity(&mut self, cap: usize) {
        self.parts.set_mailbox_capacity(cap)
    }
}

impl<A> AsyncContextParts<A> for Context<A>
where
    A: Actor<Context = Self>,
{
    fn parts(&mut self) -> &mut ContextParts<A> {
        &mut self.parts
    }
}

/// Helper trait which can spawn future into actor's context
pub trait ContextFutureSpawner<A>
where
    A: Actor,
    A::Context: AsyncContext<A>,
{
    /// spawn future into `Context<A>`
    fn spawn(self, ctx: &mut A::Context);

    /// Spawn future into the context. Stop processing any of incoming events
    /// until this future resolves.
    fn wait(self, ctx: &mut A::Context);
}

impl<A, T> ContextFutureSpawner<A> for T
where
    A: Actor,
    A::Context: AsyncContext<A>,
    T: ActorFuture<Item = (), Error = (), Actor = A> + 'static,
{
    #[inline]
    fn spawn(self, ctx: &mut A::Context) {
        let _ = ctx.spawn(self);
    }

    #[inline]
    fn wait(self, ctx: &mut A::Context) {
        ctx.wait(self);
    }
}