File size: 10,441 Bytes
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use codex_code_mode_protocol::CellId;
use codex_code_mode_protocol::CodeModeSessionCellExecutionLimits;
use codex_code_mode_protocol::CodeModeSessionDelegate;
use codex_code_mode_protocol::ExecuteRequest;
use codex_code_mode_protocol::WaitOutcome;
use codex_code_mode_protocol::WaitRequest;
use codex_code_mode_protocol::host::ClientToHost;
use codex_code_mode_protocol::host::EncodedFrame;
use codex_code_mode_protocol::host::HostRequest;
use codex_code_mode_protocol::host::WireSessionCellExecutionLimits;
use codex_code_mode_protocol::host::WireWaitRequest;
use tokio::sync::oneshot;
use tokio_util::sync::CancellationToken;
use super::ConnectionDriver;
use super::cell_ids::remote_cell_id;
use super::cell_ids::remote_wait_request;
use super::types::CancellableRequest;
use super::types::DeferredWait;
use super::types::DeliveredExecute;
use super::types::DriverCommand;
use super::types::PendingRequest;
use super::types::RemoteSession;
impl ConnectionDriver {
pub(super) fn handle_command(&mut self, command: DriverCommand) -> bool {
match command {
DriverCommand::OpenSession {
session,
limits,
cleanup,
caller_cancellation,
response_tx,
} => self.open_session(session, limits, cleanup, caller_cancellation, response_tx),
DriverCommand::Execute {
session,
request,
delegate,
caller_cancellation,
response_tx,
} => self.execute(session, request, delegate, caller_cancellation, response_tx),
DriverCommand::Wait {
session,
request,
caller_cancellation,
response_tx,
} => self.wait(session, request, caller_cancellation, response_tx),
DriverCommand::Terminate {
session,
cell_id,
response_tx,
} => self.terminate(session, cell_id, response_tx),
DriverCommand::ShutdownSession {
session,
response_tx,
} => self.shutdown_session(session, response_tx),
}
}
fn open_session(
&mut self,
session: RemoteSession,
limits: CodeModeSessionCellExecutionLimits,
cleanup: super::cleanup::SessionCleanup,
caller_cancellation: CancellationToken,
response_tx: oneshot::Sender<Result<(), String>>,
) -> bool {
if self.sessions.contains(&session.id) || self.requests.contains_pending_open(&session) {
let _ = response_tx.send(Err(format!(
"code-mode session {} is already open",
session.id
)));
return true;
}
let limits = match WireSessionCellExecutionLimits::try_from(limits) {
Ok(limits) => limits,
Err(error) => {
let _ = response_tx.send(Err(format!(
"failed to encode code-mode session execution limits: {error}"
)));
return true;
}
};
let request_id = match self.requests.allocate_id() {
Ok(id) => id,
Err(err) => {
let _ = response_tx.send(Err(err));
return false;
}
};
let message = ClientToHost::Request {
id: request_id,
request: HostRequest::OpenSession {
session_id: session.id.clone(),
cell_execution_limits: (limits != WireSessionCellExecutionLimits::default())
.then_some(limits),
},
};
let frame = match EncodedFrame::encode(&message) {
Ok(frame) => frame,
Err(err) => {
let _ = response_tx.send(Err(format!(
"failed to encode code-mode open-session request: {err}"
)));
return true;
}
};
let cancellation = CancellableRequest::new(caller_cancellation);
self.requests.insert_pending(
request_id,
PendingRequest::OpenSession {
session,
cleanup,
cancellation,
response_tx,
},
&self.event_tx,
);
self.queue_frame(frame)
}
fn execute(
&mut self,
session: RemoteSession,
request: ExecuteRequest,
delegate: Arc<dyn CodeModeSessionDelegate>,
caller_cancellation: CancellationToken,
response_tx: oneshot::Sender<Result<DeliveredExecute, String>>,
) -> bool {
if let Err(err) = self.sessions.require_ready(&session) {
let _ = response_tx.send(Err(err));
return true;
}
let request = match request.try_into() {
Ok(request) => request,
Err(err) => {
let _ = response_tx.send(Err(format!(
"failed to encode code-mode execute request: {err}"
)));
return true;
}
};
let request_id = match self.requests.allocate_id() {
Ok(id) => id,
Err(err) => {
let _ = response_tx.send(Err(err));
return false;
}
};
let message = ClientToHost::Request {
id: request_id,
request: HostRequest::Execute {
session_id: session.id.clone(),
request,
},
};
let frame = match EncodedFrame::encode(&message) {
Ok(frame) => frame,
Err(err) => {
let _ = response_tx.send(Err(format!(
"code-mode execute request exceeds the IPC frame limit: {err}"
)));
return true;
}
};
let (initial_response_tx, initial_response_rx) = oneshot::channel();
let cancellation = CancellableRequest::new(caller_cancellation);
self.requests.insert_pending(
request_id,
PendingRequest::Execute {
session,
delegate,
response_tx,
initial_response_tx,
initial_response_rx,
cancellation,
},
&self.event_tx,
);
self.queue_frame(frame)
}
fn wait(
&mut self,
session: RemoteSession,
request: WaitRequest,
caller_cancellation: CancellationToken,
response_tx: oneshot::Sender<Result<WaitOutcome, String>>,
) -> bool {
if let Err(err) = self.sessions.require_ready(&session) {
let _ = response_tx.send(Err(err));
return true;
}
let request = match remote_wait_request(&session, request) {
Ok(request) => request,
Err(err) => {
let _ = response_tx.send(Err(err));
return true;
}
};
if self.requests.has_cancelled_wait(&session, &request.cell_id) {
self.requests.push_deferred_wait(DeferredWait {
session,
request,
caller_cancellation,
response_tx,
});
return true;
}
self.start_wait(session, request, caller_cancellation, response_tx)
}
pub(super) fn start_wait(
&mut self,
session: RemoteSession,
request: WireWaitRequest,
caller_cancellation: CancellationToken,
response_tx: oneshot::Sender<Result<WaitOutcome, String>>,
) -> bool {
let cell_id = request.cell_id.clone();
self.send_request(
HostRequest::Wait {
session_id: session.id.clone(),
request,
},
PendingRequest::Wait {
session,
cell_id,
cancellation: CancellableRequest::new(caller_cancellation),
response_tx,
},
)
}
fn terminate(
&mut self,
session: RemoteSession,
cell_id: CellId,
response_tx: oneshot::Sender<Result<WaitOutcome, String>>,
) -> bool {
if let Err(err) = self.sessions.require_ready(&session) {
let _ = response_tx.send(Err(err));
return true;
}
let cell_id = match remote_cell_id(&session, &cell_id) {
Ok(cell_id) => cell_id,
Err(err) => {
let _ = response_tx.send(Err(err));
return true;
}
};
let pending_cell_id = cell_id.clone();
self.send_request(
HostRequest::Terminate {
session_id: session.id.clone(),
cell_id,
},
PendingRequest::Terminate {
session,
cell_id: pending_cell_id,
response_tx,
},
)
}
fn shutdown_session(
&mut self,
session: RemoteSession,
response_tx: oneshot::Sender<Result<(), String>>,
) -> bool {
if let Err(err) = self.sessions.begin_shutdown(&session) {
let _ = response_tx.send(Err(err));
return true;
}
self.send_request(
HostRequest::ShutdownSession {
session_id: session.id.clone(),
},
PendingRequest::ShutdownSession {
session,
response_tx,
},
)
}
pub(super) fn send_request(&mut self, request: HostRequest, pending: PendingRequest) -> bool {
let request_id = match self.requests.allocate_id() {
Ok(id) => id,
Err(err) => {
pending.fail(err);
return false;
}
};
let message = ClientToHost::Request {
id: request_id,
request,
};
let frame = match EncodedFrame::encode(&message) {
Ok(frame) => frame,
Err(err) => {
pending.fail(format!(
"code-mode request exceeds the IPC frame limit: {err}"
));
return true;
}
};
self.requests
.insert_pending(request_id, pending, &self.event_tx);
self.queue_frame(frame)
}
}
|