musicgpt 0.3.1

Generate music samples from natural language prompt locally with your own computer
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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262

use axum::extract::WebSocketUpgrade;
use axum::response::Html;
use axum::routing::get;
use axum::Router;
use tower_http::services::ServeDir;

use crate::storage::AppFs;
use crate::backend::audio_generation_fanout::audio_generation_fanout;
use crate::backend::audio_generation_backend::{AudioGenerationBackend, JobProcessor};
use crate::backend::ws_handler::WsHandler;
use crate::backend::music_gpt_ws_handler::{Info, MusicGptWsHandler};

async fn web_app() -> Html<&'static str> {
    Html(include_str!(concat!(
        env!("CARGO_MANIFEST_DIR"),
        "/web/dist/index.html"
    )))
}

pub async fn run<T: JobProcessor + 'static>(
    storage: AppFs,
    processor: T,
    port: usize,
    open: bool,
) -> anyhow::Result<()> {
    let model = processor.name();
    let device = processor.device();

    let (ai_tx, ai_rx) = AudioGenerationBackend::new(processor).run();
    let ai_broadcast_tx = audio_generation_fanout(ai_rx, storage.clone());

    let root_dir = storage.root.clone();
    let ws_handler = MusicGptWsHandler {
        ai_tx,
        storage,
        info: Info { model, device },
        ai_broadcast_tx,
    };

    let app = Router::new()
        .route("/", get(web_app))
        .nest_service("/files", ServeDir::new(root_dir))
        .route(
            "/ws",
            get(|ws: WebSocketUpgrade| async move {
                let ws_handler = ws_handler.clone();
                ws.on_upgrade(move |ws| ws_handler.handle(ws))
            }),
        );

    let listener = tokio::net::TcpListener::bind(format!("0.0.0.0:{port}")).await?;
    if open {
        let _ = open::that(format!("http://localhost:{port}"));
    }

    Ok(axum::serve(listener, app).await?)
}

#[cfg(test)]
mod tests {
    use std::sync::atomic::{AtomicU16, Ordering};
    use std::time::Duration;

    use futures_util::{SinkExt, StreamExt};
    use serde::de::DeserializeOwned;
    use serde::Serialize;
    use tokio_tungstenite::connect_async;
    use uuid::Uuid;

    use crate::backend::_test_utils::DummyJobProcessor;
    use crate::backend::music_gpt_ws_handler::{
        AbortGenerationRequest, GenerateAudioRequest, InboundMsg, OutboundMsg,
    };

    use super::*;

    static PORT: AtomicU16 = AtomicU16::new(8643);

    fn spawn<P: JobProcessor + 'static>(processor: P) -> usize {
        let app_fs = AppFs::new_tmp();
        let port = PORT.fetch_add(1, Ordering::SeqCst) as usize;
        tokio::spawn(run(app_fs, processor, port, false));
        port
    }

    #[tokio::test]
    async fn sending_a_job_processes_it() -> anyhow::Result<()> {
        let port = spawn(DummyJobProcessor::default());

        let (mut ws_stream, _) = connect_async(&format!("ws://localhost:{port}/ws")).await?;
        let id = Uuid::new_v4();
        let chat_id = Uuid::new_v4();
        let msg = InboundMsg::GenerateAudio(GenerateAudioRequest {
            id,
            chat_id,
            prompt: "Create a cool song".to_string(),
            secs: 4,
        });
        ws_stream.send(msg.to_tungstenite_msg()).await?;

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_info();

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_chats();
        
        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_start();

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_progress();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.progress, 0.25);

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_progress();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.progress, 0.5);

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_progress();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.progress, 0.75);

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_progress();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.progress, 1.0);

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_result();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.relpath, format!("audios/{id}.wav"));
        
        let res = reqwest::get(format!("http://localhost:{port}/files/audios/{id}.wav")).await?;
        assert_eq!(res.status(), 200);
        
        Ok(())
    }

    #[tokio::test]
    async fn can_abort_a_job() -> anyhow::Result<()> {
        let port = spawn(DummyJobProcessor::new(Duration::from_millis(100)));

        let (mut ws_stream, _) = connect_async(&format!("ws://localhost:{port}/ws")).await?;
        let id = Uuid::new_v4();
        let chat_id = Uuid::new_v4();
        let msg = InboundMsg::GenerateAudio(GenerateAudioRequest {
            id,
            chat_id,
            prompt: "Create a cool song".to_string(),
            secs: 4,
        });
        ws_stream.send(msg.to_tungstenite_msg()).await?;

        tokio::time::sleep(Duration::from_millis(150)).await;
        ws_stream
            .send(InboundMsg::AbortGeneration(AbortGenerationRequest { id, chat_id }).to_tungstenite_msg())
            .await?;

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_info();

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_chats();

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_start();

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_progress();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.progress, 0.25);

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_progress();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.progress, 0.5);

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_err();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.error, "Aborted");

        Ok(())
    }

    #[tokio::test]
    async fn handles_job_failures() -> anyhow::Result<()> {
        let port = spawn(DummyJobProcessor::default());

        let (mut ws_stream, _) = connect_async(&format!("ws://localhost:{port}/ws")).await?;
        let id = Uuid::new_v4();
        let chat_id = Uuid::new_v4();
        let msg = InboundMsg::GenerateAudio(GenerateAudioRequest {
            id,
            chat_id,
            prompt: "fail at 2".to_string(),
            secs: 4,
        });
        ws_stream.send(msg.to_tungstenite_msg()).await?;

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_info();

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_chats();

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        msg.unwrap_start();

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_progress();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.progress, 0.25);

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_progress();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.progress, 0.5);

        let msg = OutboundMsg::from_tungstenite_msg(ws_stream.next().await.unwrap()?)?;
        let p = msg.unwrap_err();
        assert_eq!(p.id, id);
        assert_eq!(p.chat_id, chat_id);
        assert_eq!(p.error, "Failed at 2");

        Ok(())
    }

    trait TungsteniteMsg: Sized {
        fn to_tungstenite_msg(&self) -> tokio_tungstenite::tungstenite::Message;
        fn from_tungstenite_msg(
            msg: tokio_tungstenite::tungstenite::Message,
        ) -> anyhow::Result<Self>;
    }

    impl<T: Serialize + DeserializeOwned> TungsteniteMsg for T {
        fn to_tungstenite_msg(&self) -> tokio_tungstenite::tungstenite::Message {
            tokio_tungstenite::tungstenite::Message::Text(
                serde_json::to_string(self).expect("Could not serialize msg"),
            )
        }

        fn from_tungstenite_msg(
            msg: tokio_tungstenite::tungstenite::Message,
        ) -> anyhow::Result<Self> {
            let msg = msg.to_text()?;
            Ok(serde_json::de::from_str(msg)?)
        }
    }
}