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denoland-deno/cli/ops/jupyter.rs
Kyle Kelley 8698e80304
refactor(jupyter): use runtimelib for Jupyter structures and directory paths (#23826)
This brings in [`runtimelib`](https://github.com/runtimed/runtimed) to
use:

## Fully typed structs for Jupyter Messages

```rust
let msg = connection.read().await?;

self
  .send_iopub(
    runtimelib::Status::busy().as_child_of(msg),
  )
  .await?;
```

## Jupyter paths

Jupyter paths are implemented in Rust, allowing the Deno kernel to be
installed completely via Deno without a requirement on Python or
Jupyter. Deno users will be able to install and use the kernel with just
VS Code or other editors that support Jupyter.

```rust
pub fn status() -> Result<(), AnyError> {
  let user_data_dir = user_data_dir()?;

  let kernel_spec_dir_path = user_data_dir.join("kernels").join("deno");
  let kernel_spec_path = kernel_spec_dir_path.join("kernel.json");

  if kernel_spec_path.exists() {
    log::info!(" Deno kernel already installed");
    Ok(())
  } else {
    log::warn!("ℹ️ Deno kernel is not yet installed, run `deno jupyter --install` to set it up");
    Ok(())
  }
}
```

Closes https://github.com/denoland/deno/issues/21619
2024-05-21 22:35:21 +02:00

102 lines
2.5 KiB
Rust

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use std::cell::RefCell;
use std::rc::Rc;
use std::sync::Arc;
use runtimelib::JupyterMessage;
use runtimelib::JupyterMessageContent;
use runtimelib::KernelIoPubConnection;
use runtimelib::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 mut jupyter_message = JupyterMessage::new(content, Some(&last_request));
jupyter_message.metadata = metadata;
jupyter_message.buffers =
buffers.into_iter().map(|b| b.to_vec().into()).collect();
jupyter_message.set_parent(last_request);
(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(())
}