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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use std::cell::RefCell;
use std::rc::Rc;
use std::sync::Arc;
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::serde_json;
use deno_core::OpState;
use tokio::sync::mpsc;
use tokio::sync::Mutex;
deno_core::extension!(deno_jupyter,
ops = [
op_jupyter_broadcast,
],
options = {
sender: mpsc::UnboundedSender<StreamContent>,
},
middleware = |op| match op.name {
"op_print" => op_print(),
_ => op,
},
state = |state, options| {
state.put(options.sender);
},
);
#[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<(), AnyError> {
let (iopub_connection, last_execution_request) = {
let s = state.borrow();
(
s.borrow::<Arc<Mutex<KernelIoPubConnection>>>().clone(),
s.borrow::<Rc<RefCell<Option<JupyterMessage>>>>().clone(),
)
};
let maybe_last_request = last_execution_request.borrow().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
);
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().await)
.send(jupyter_message)
.await?;
}
Ok(())
}
#[op2(fast)]
pub fn op_print(
state: &mut OpState,
#[string] msg: &str,
is_err: bool,
) -> Result<(), AnyError> {
let sender = state.borrow_mut::<mpsc::UnboundedSender<StreamContent>>();
if is_err {
if let Err(err) = sender.send(StreamContent::stderr(msg.into())) {
log::error!("Failed to send stderr message: {}", err);
}
return Ok(());
}
if let Err(err) = sender.send(StreamContent::stdout(msg.into())) {
log::error!("Failed to send stdout message: {}", err);
}
Ok(())
}
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