rgb-cln/plugins/examples/cln-plugin-reentrant.rs

45 lines
1.1 KiB
Rust

use anyhow::Error;
use cln_plugin::{Builder, Plugin};
use serde_json::json;
use tokio::sync::broadcast;
#[derive(Clone)]
struct State {
tx: broadcast::Sender<()>,
}
#[tokio::main]
async fn main() -> Result<(), Error> {
let (tx, _) = broadcast::channel(4);
let state = State { tx };
if let Some(plugin) = Builder::new(tokio::io::stdin(), tokio::io::stdout())
.hook("htlc_accepted", htlc_accepted_handler)
.rpcmethod("release", "Release all HTLCs we currently hold", release)
.start(state)
.await?
{
plugin.join().await?;
Ok(())
} else {
Ok(())
}
}
/// Release all waiting HTLCs
async fn release(p: Plugin<State>, _v: serde_json::Value) -> Result<serde_json::Value, Error> {
p.state().tx.send(()).unwrap();
Ok(json!("Released!"))
}
async fn htlc_accepted_handler(
p: Plugin<State>,
v: serde_json::Value,
) -> Result<serde_json::Value, Error> {
log::info!("Holding on to incoming HTLC {:?}", v);
// Wait for `release` to be called.
p.state().tx.subscribe().recv().await.unwrap();
Ok(json!({"result": "continue"}))
}