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use crate::worker::{Worker, WorkerSettings};
use async_executor::Executor;
use async_oneshot::Sender;
use event_listener_primitives::{Bag, HandlerId};
use futures_lite::future;
use log::debug;
use std::io;
use std::path::PathBuf;
use std::sync::Arc;
#[derive(Default)]
struct Handlers {
new_worker: Bag<Box<dyn Fn(&Worker) + Send + Sync>>,
}
struct Inner {
executor: Arc<Executor<'static>>,
handlers: Handlers,
_stop_sender: Option<Sender<()>>,
worker_binary: PathBuf,
}
#[derive(Clone)]
pub struct WorkerManager {
inner: Arc<Inner>,
}
impl WorkerManager {
pub fn new(worker_binary: PathBuf) -> Self {
let executor = Arc::new(Executor::new());
let (stop_sender, stop_receiver) = async_oneshot::oneshot::<()>();
{
let executor = Arc::clone(&executor);
std::thread::spawn(move || {
let _ = future::block_on(executor.run(stop_receiver));
});
}
let handlers = Handlers::default();
let inner = Arc::new(Inner {
executor,
handlers,
_stop_sender: Some(stop_sender),
worker_binary,
});
Self { inner }
}
pub fn with_executor(worker_binary: PathBuf, executor: Arc<Executor<'static>>) -> Self {
let handlers = Handlers::default();
let inner = Arc::new(Inner {
executor,
handlers,
_stop_sender: None,
worker_binary,
});
Self { inner }
}
pub async fn create_worker(&self, worker_settings: WorkerSettings) -> io::Result<Worker> {
debug!("create_worker()");
let worker = Worker::new(
Arc::clone(&self.inner.executor),
self.inner.worker_binary.clone(),
worker_settings,
self.clone(),
)
.await?;
self.inner.handlers.new_worker.call(|callback| {
callback(&worker);
});
Ok(worker)
}
pub fn on_new_worker<F: Fn(&Worker) + Send + Sync + 'static>(&self, callback: F) -> HandlerId {
self.inner.handlers.new_worker.add(Box::new(callback))
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::env;
fn init() {
{
let mut builder = env_logger::builder();
if env::var(env_logger::DEFAULT_FILTER_ENV).is_err() {
builder.filter_level(log::LevelFilter::Off);
}
let _ = builder.is_test(true).try_init();
}
}
#[test]
fn worker_manager_test() {
init();
let worker_manager = WorkerManager::new(
env::var("MEDIASOUP_WORKER_BIN")
.map(|path| path.into())
.unwrap_or_else(|_| "../worker/out/Release/mediasoup-worker".into()),
);
future::block_on(async move {
worker_manager
.create_worker(WorkerSettings::default())
.await
.unwrap();
});
}
}