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Public release release-e7c2b3ac175d

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Source commit: e7c2b3ac175db426791c02779841c5df1d0ffdff

Public tree identity: sha256:4f0b7cd828932c06d56f2406788f89b2050ef56c1e1a4f76f55341d387d78e46
This commit is contained in:
Clusterflux release 2026-07-29 02:53:56 +02:00
parent 9f43c6276a
commit cfd4f19da2
16 changed files with 1386 additions and 313 deletions
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101
crates/clusterflux-client/src/transport.rs
View file

@ -1,6 +1,7 @@
use std::collections::{BTreeMap, VecDeque};
use std::future::Future;
use std::pin::Pin;
use std::sync::atomic::{AtomicU64, Ordering};
use std::sync::{Arc, Mutex};
use std::time::Duration;
@ -33,13 +34,20 @@ pub trait ClientTransport: Send + Sync + 'static {
fn send(&self, request: TransportRequest) -> TransportFuture;
}
type ControlSessionPool = Arc<Vec<Mutex<Option<ControlSession>>>>;
pub struct ControlTransport {
endpoint: String,
connect_timeout: Duration,
io_timeout: Duration,
sessions: Arc<Mutex<BTreeMap<String, ControlSession>>>,
sessions: Arc<Mutex<BTreeMap<String, ControlSessionPool>>>,
next_session: Arc<AtomicU64>,
}
// A small pool allows independent HTMX reads to progress concurrently while
// keeping connection and blocking-worker use strictly bounded.
const SESSIONS_PER_API_PATH: usize = 4;
impl ControlTransport {
pub fn new(endpoint: impl Into<String>) -> Result<Self, ClientTransportError> {
Self::with_timeouts(endpoint, Duration::from_secs(10), Duration::from_secs(30))
@ -58,6 +66,7 @@ impl ControlTransport {
connect_timeout,
io_timeout,
sessions: Arc::new(Mutex::new(BTreeMap::new())),
next_session: Arc::new(AtomicU64::new(0)),
})
}
}
@ -68,35 +77,89 @@ impl ClientTransport for ControlTransport {
let connect_timeout = self.connect_timeout;
let io_timeout = self.io_timeout;
let sessions = Arc::clone(&self.sessions);
let next_session = Arc::clone(&self.next_session);
Box::pin(async move {
let pool = {
let mut sessions = sessions.lock().map_err(|_| {
ClientTransportError::Failed(
"client transport pool lock was poisoned".to_owned(),
)
})?;
Arc::clone(sessions.entry(request.api_path.clone()).or_insert_with(|| {
Arc::new(
(0..SESSIONS_PER_API_PATH)
.map(|_| Mutex::new(None))
.collect(),
)
}))
};
let slot_index =
next_session.fetch_add(1, Ordering::Relaxed) as usize % SESSIONS_PER_API_PATH;
tokio::task::spawn_blocking(move || {
let value = serde_json::from_slice(&request.body)
.map_err(|error| ClientTransportError::Failed(error.to_string()))?;
let mut sessions = sessions.lock().map_err(|_| {
ClientTransportError::Failed(
"client transport session lock was poisoned".to_owned(),
)
})?;
if !sessions.contains_key(&request.api_path) {
let session = ControlSession::connect_to_api_path_with_timeouts(
&endpoint,
&request.api_path,
connect_timeout,
io_timeout,
)
.map_err(|error| ClientTransportError::Failed(error.to_string()))?;
sessions.insert(request.api_path.clone(), session);
let mut selected = None;
for offset in 0..SESSIONS_PER_API_PATH {
let index = (slot_index + offset) % SESSIONS_PER_API_PATH;
match pool[index].try_lock() {
Ok(session) if session.is_some() => {
selected = Some(session);
break;
}
Ok(_) | Err(std::sync::TryLockError::WouldBlock) => {}
Err(std::sync::TryLockError::Poisoned(_)) => {
return Err(ClientTransportError::Failed(
"client transport session lock was poisoned".to_owned(),
));
}
}
}
let response = sessions
.get_mut(&request.api_path)
.expect("session was inserted for the requested API path")
if selected.is_none() {
for offset in 0..SESSIONS_PER_API_PATH {
let index = (slot_index + offset) % SESSIONS_PER_API_PATH;
match pool[index].try_lock() {
Ok(session) => {
selected = Some(session);
break;
}
Err(std::sync::TryLockError::WouldBlock) => {}
Err(std::sync::TryLockError::Poisoned(_)) => {
return Err(ClientTransportError::Failed(
"client transport session lock was poisoned".to_owned(),
));
}
}
}
}
let mut session = match selected {
Some(session) => session,
None => pool[slot_index].lock().map_err(|_| {
ClientTransportError::Failed(
"client transport session lock was poisoned".to_owned(),
)
})?,
};
if session.is_none() {
*session = Some(
ControlSession::connect_to_api_path_with_timeouts(
&endpoint,
&request.api_path,
connect_timeout,
io_timeout,
)
.map_err(|error| ClientTransportError::Failed(error.to_string()))?,
);
}
let response = session
.as_mut()
.expect("session was initialized for the requested API path")
.request(&value);
match response {
Ok(response) => serde_json::to_vec(&response)
.map(|body| TransportResponse { body })
.map_err(|error| ClientTransportError::Failed(error.to_string())),
Err(error) => {
sessions.remove(&request.api_path);
*session = None;
Err(ClientTransportError::Failed(error.to_string()))
}
}