jarust_core 1.0.0

A janus client SDK in 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

use crate::jahandle::JaHandle;
use crate::jahandle::NewHandleParams;
use crate::prelude::*;
use async_trait::async_trait;
use jarust_interface::janus_interface::JanusInterfaceImpl;
use jarust_rt::JaTask;
use std::sync::Arc;
use std::time::Duration;
use tokio::sync::mpsc;
use tokio::sync::Mutex;
use tokio::time;

#[derive(Debug)]
pub struct Shared {
    id: u64,
    interface: JanusInterfaceImpl,
}

#[derive(Debug, Default)]
pub struct Exclusive {
    tasks: Vec<JaTask>,
}

#[derive(Debug)]
struct InnerSession {
    shared: Shared,
    exclusive: Mutex<Exclusive>,
}

#[derive(Clone, Debug)]
pub struct JaSession {
    inner: Arc<InnerSession>,
}

pub struct NewSessionParams {
    pub session_id: u64,
    pub ka_interval: u32,
    pub interface: JanusInterfaceImpl,
}

impl JaSession {
    pub(crate) async fn new(params: NewSessionParams) -> Self {
        let shared = Shared {
            id: params.session_id,
            interface: params.interface,
        };
        let exclusive = Mutex::new(Exclusive::default());
        let session = Self {
            inner: Arc::new(InnerSession { shared, exclusive }),
        };

        let this = session.clone();

        let keepalive_task = jarust_rt::spawn("keepalive", async move {
            let _ = this.keep_alive(params.ka_interval).await;
        });

        session
            .inner
            .exclusive
            .lock()
            .await
            .tasks
            .push(keepalive_task);

        session
    }

    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all, fields(session_id = self.inner.shared.id))]
    async fn keep_alive(self, ka_interval: u32) -> Result<(), jarust_interface::Error> {
        if !self.inner.shared.interface.has_keep_alive() {
            tracing::debug!("Keep-alive not supported");
            return Ok(());
        }

        let duration = Duration::from_secs(ka_interval.into());
        let mut interval = time::interval(duration);
        let id = { self.inner.shared.id };
        loop {
            interval.tick().await;
            tracing::debug!("Sending keep-alive");
            match self.inner.shared.interface.keep_alive(id, duration).await {
                Ok(_) => tracing::debug!("Keep-alive success"),
                Err(e) => tracing::error!("Keep-alive failed: {:?}", e),
            };
        }
    }
}

impl JaSession {
    /// Destroy the current session
    ///
    /// Similar to [`destroy`](Self::destroy) but it borrows the session instead of consuming it
    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all, fields(session_id = self.inner.shared.id))]
    pub async fn destroy(&self, timeout: Duration) -> Result<(), jarust_interface::Error> {
        tracing::info!("Destroying session");
        let session_id = self.inner.shared.id;
        self.inner
            .shared
            .interface
            .destroy(session_id, timeout)
            .await?;
        Ok(())
    }

    /// Destroy the current session
    ///
    /// Similar to [`destroy`](Self::destroy) but consumes the session
    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all, fields(session_id = self.inner.shared.id))]
    pub async fn into_destroy(self, timeout: Duration) -> Result<(), jarust_interface::Error> {
        tracing::info!("Destroying and dropping session");
        let session_id = self.inner.shared.id;
        self.inner
            .shared
            .interface
            .destroy(session_id, timeout)
            .await?;
        Ok(())
    }
}

#[async_trait]
impl Attach for JaSession {
    /// Attach a plugin to the current session
    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all, fields(session_id = self.inner.shared.id))]
    async fn attach(
        &self,
        plugin_id: String,
        timeout: Duration,
    ) -> Result<(JaHandle, mpsc::UnboundedReceiver<JaResponse>), jarust_interface::Error> {
        tracing::info!(plugin = &plugin_id, "Attaching new handle");
        let session_id = self.inner.shared.id;
        let (handle_id, event_receiver) = self
            .inner
            .shared
            .interface
            .attach(session_id, plugin_id, timeout)
            .await?;

        let handle = JaHandle::new(NewHandleParams {
            handle_id,
            session_id,
            interface: self.inner.shared.interface.clone(),
        })
        .await;
        tracing::info!(id = handle_id, "Handle created");
        Ok((handle, event_receiver))
    }
}

impl Drop for Exclusive {
    fn drop(&mut self) {
        self.tasks.iter().for_each(|task| {
            task.cancel();
        });
    }
}