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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// NOTE(bartlomieju): unfortunately it appears that clippy is broken
// and can't allow a single line ignore for `await_holding_lock`.
#![allow(clippy::await_holding_lock)]
use std::cell::RefCell;
use std::rc::Rc;
use std::sync::Arc;
use jupyter_runtime::InputRequest;
use jupyter_runtime::JupyterMessage;
use jupyter_runtime::JupyterMessageContent;
use jupyter_runtime::KernelIoPubConnection;
use jupyter_runtime::StreamContent;
use deno_core::error::AnyError;
use deno_core::op2;
use deno_core::parking_lot::Mutex;
use deno_core::serde_json;
use deno_core::OpState;
use tokio::sync::mpsc;
use crate::tools::jupyter::server::StdinConnectionProxy;
deno_core::extension!(deno_jupyter,
ops = [
op_jupyter_broadcast,
op_jupyter_input,
],
options = {
sender: mpsc::UnboundedSender<StreamContent>,
},
middleware = |op| match op.name {
"op_print" => op_print(),
_ => op,
},
state = |state, options| {
state.put(options.sender);
},
);
#[op2]
#[string]
pub fn op_jupyter_input(
state: &mut OpState,
#[string] prompt: String,
is_password: bool,
) -> Option<String> {
let (last_execution_request, stdin_connection_proxy) = {
(
state.borrow::<Arc<Mutex<Option<JupyterMessage>>>>().clone(),
state.borrow::<Arc<Mutex<StdinConnectionProxy>>>().clone(),
)
};
let maybe_last_request = last_execution_request.lock().clone();
if let Some(last_request) = maybe_last_request {
let JupyterMessageContent::ExecuteRequest(msg) = &last_request.content
else {
return None;
};
if !msg.allow_stdin {
return None;
}
let content = InputRequest {
prompt,
password: is_password,
};
let msg = JupyterMessage::new(content, Some(&last_request));
let Ok(()) = stdin_connection_proxy.lock().tx.send(msg) else {
return None;
};
// Need to spawn a separate thread here, because `blocking_recv()` can't
// be used from the Tokio runtime context.
let join_handle = std::thread::spawn(move || {
stdin_connection_proxy.lock().rx.blocking_recv()
});
let Ok(Some(response)) = join_handle.join() else {
return None;
};
let JupyterMessageContent::InputReply(msg) = response.content else {
return None;
};
return Some(msg.value);
}
None
}
#[derive(Debug, thiserror::Error)]
pub enum JupyterBroadcastError {
#[error(transparent)]
SerdeJson(serde_json::Error),
#[error(transparent)]
ZeroMq(AnyError),
}
#[op2(async)]
pub async fn op_jupyter_broadcast(
state: Rc<RefCell<OpState>>,
#[string] message_type: String,
#[serde] content: serde_json::Value,
#[serde] metadata: serde_json::Value,
#[serde] buffers: Vec<deno_core::JsBuffer>,
) -> Result<(), JupyterBroadcastError> {
let (iopub_connection, last_execution_request) = {
let s = state.borrow();
(
s.borrow::<Arc<Mutex<KernelIoPubConnection>>>().clone(),
s.borrow::<Arc<Mutex<Option<JupyterMessage>>>>().clone(),
)
};
let maybe_last_request = last_execution_request.lock().clone();
if let Some(last_request) = maybe_last_request {
let content = JupyterMessageContent::from_type_and_content(
&message_type,
content.clone(),
)
.map_err(|err| {
log::error!(
"Error deserializing content from jupyter.broadcast, message_type: {}:\n\n{}\n\n{}",
&message_type,
content,
err
);
JupyterBroadcastError::SerdeJson(err)
})?;
let jupyter_message = JupyterMessage::new(content, Some(&last_request))
.with_metadata(metadata)
.with_buffers(buffers.into_iter().map(|b| b.to_vec().into()).collect());
iopub_connection
.lock()
.send(jupyter_message)
.await
.map_err(JupyterBroadcastError::ZeroMq)?;
}
Ok(())
}
#[op2(fast)]
pub fn op_print(state: &mut OpState, #[string] msg: &str, is_err: bool) {
let sender = state.borrow_mut::<mpsc::UnboundedSender<StreamContent>>();
if is_err {
if let Err(err) = sender.send(StreamContent::stderr(msg)) {
log::error!("Failed to send stderr message: {}", err);
}
return;
}
if let Err(err) = sender.send(StreamContent::stdout(msg)) {
log::error!("Failed to send stdout message: {}", err);
}
}
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