rsfu 0.1.1

a sfu library.
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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179

use crate::buffer::buffer::{AtomicBuffer, Stats};
use anyhow::Result;
use prometheus::{Counter, Gauge, Opts, Registry};
use prometheus::{Histogram, HistogramOpts};
use std::sync::atomic::{AtomicU64, Ordering};
use std::sync::Arc;
use tokio::sync::Mutex;

#[allow(dead_code)]
pub struct PrometheusHandler {
    drift: Histogram,
    expected_count: Counter,
    received_count: Counter,
    packet_count: Counter,
    total_bytes: Counter,
    sessions: Gauge,
    peers: Gauge,
    audio_tracks: Gauge,
    video_tracks: Gauge,
}

impl PrometheusHandler {
    fn new() -> Self {
        let arift_buckets = vec![5.0, 10.0, 20.0, 40.0, 80.0, 160.0, f64::MAX];
        let drift = Histogram::with_opts(
            HistogramOpts::new("drift_millis", "drift_millis")
                .subsystem("rtp")
                .buckets(arift_buckets),
        )
        .unwrap();

        let expected_count =
            Counter::with_opts(Opts::new("expected", "expected").subsystem("rtp")).unwrap();
        let received_count =
            Counter::with_opts(Opts::new("received", "received").subsystem("rtp")).unwrap();
        let packet_count =
            Counter::with_opts(Opts::new("packets", "packets").subsystem("rtp")).unwrap();
        let total_bytes = Counter::with_opts(Opts::new("bytes", "bytes").subsystem("rtp")).unwrap();

        let sessions =
            Gauge::with_opts(Opts::new("sessions", "Current number of sessions").subsystem("sfu"))
                .unwrap();
        let peers = Gauge::with_opts(
            Opts::new("peers", "Current number of peers connected").subsystem("sfu"),
        )
        .unwrap();

        let audio_tracks = Gauge::with_opts(
            Opts::new("audio_tracks", "Current number of audio tracks").subsystem("sfu"),
        )
        .unwrap();
        let video_tracks = Gauge::with_opts(
            Opts::new("video_tracks", "Current number of video tracks").subsystem("sfu"),
        )
        .unwrap();

        Self {
            drift,
            expected_count,
            received_count,
            packet_count,
            total_bytes,
            sessions,
            peers,
            audio_tracks,
            video_tracks,
        }
    }
    #[allow(dead_code)]
    fn register(&self) -> Result<()> {
        let r = Registry::new();

        r.register(Box::new(self.drift.clone()))?;
        r.register(Box::new(self.expected_count.clone()))?;
        r.register(Box::new(self.received_count.clone()))?;
        r.register(Box::new(self.packet_count.clone()))?;
        r.register(Box::new(self.total_bytes.clone()))?;
        r.register(Box::new(self.sessions.clone()))?;
        r.register(Box::new(self.peers.clone()))?;
        r.register(Box::new(self.audio_tracks.clone()))?;
        r.register(Box::new(self.video_tracks.clone()))?;

        Ok(())
    }
}

#[allow(dead_code)]
#[derive(Default)]
pub struct StreamStats {
    has_stas: bool,
    last_stats: Stats,
    diff_stats: Stats,
}

#[allow(dead_code)]
pub struct Stream {
    buffer: Arc<AtomicBuffer>,

    cname: Arc<Mutex<String>>,
    drift_in_millis: AtomicU64,
    stats: Arc<Mutex<StreamStats>>,

    prometheus_handler: PrometheusHandler,
}

impl Stream {
    pub fn new(buffer: Arc<AtomicBuffer>) -> Self {
        let prometheus_handler = PrometheusHandler::new();

        Self {
            buffer,
            cname: Arc::new(Mutex::new(String::default())),
            drift_in_millis: AtomicU64::default(),
            stats: Arc::new(Mutex::new(StreamStats::default())),
            prometheus_handler,
        }
    }
    #[allow(dead_code)]
    async fn get_cname(&mut self) -> String {
        let cname = self.cname.lock().await;
        cname.clone()
    }

    pub async fn set_cname(&mut self, val: String) {
        let mut cname = self.cname.lock().await;
        *cname = val;
    }
    #[allow(dead_code)]
    fn set_drift_in_millis(&mut self, val: u64) {
        self.drift_in_millis.store(val, Ordering::Relaxed);
    }
    #[allow(dead_code)]
    fn get_drift_in_millis(&self) -> u64 {
        self.drift_in_millis.load(Ordering::Relaxed)
    }
    #[allow(dead_code)]
    async fn update_stats(&mut self, stats: Stats) -> (bool, Stats) {
        let mut cur_stats = self.stats.lock().await;

        let mut has_status = false;

        if cur_stats.has_stas {
            cur_stats.diff_stats.last_expected =
                stats.last_expected - cur_stats.last_stats.last_expected;

            cur_stats.diff_stats.last_expected =
                stats.last_received - cur_stats.last_stats.last_received;

            cur_stats.diff_stats.packet_count =
                stats.packet_count - cur_stats.last_stats.packet_count;

            cur_stats.diff_stats.total_byte = stats.total_byte - cur_stats.last_stats.total_byte;

            has_status = true
        }

        cur_stats.last_stats = stats;
        cur_stats.has_stas = true;

        (has_status, cur_stats.diff_stats.clone())
    }
    #[allow(dead_code)]
    async fn calc_stats(&mut self) {
        let buffer_stats = self.buffer.get_status().await;
        let drift_in_millis = self.get_drift_in_millis();

        let (has_stats, _) = self.update_stats(buffer_stats).await;

        self.prometheus_handler
            .drift
            .observe(drift_in_millis as f64);

        if has_stats {
            //self.prometheus_handler.expected_count.
        }

        // self.prometheus_handler.expected_count
    }
}