fix(core): Fix async panic on blocking #19

Replaced internal threads with tokio spawn functions

crates/dagger-core/src/cli_session.rs

@@ -3,7 +3,7 @@ use std::{
     io::{BufRead, BufReader},
     path::PathBuf,
     process::{Child, Stdio},
-    sync::{mpsc::sync_channel, Arc},
+    sync::Arc,
 };
 
 use crate::{config::Config, connect_params::ConnectParams};
@@ -20,12 +20,12 @@ impl CliSession {
         }
     }
 
-    pub fn connect(
+    pub async fn connect(
         &self,
         config: &Config,
         cli_path: &PathBuf,
     ) -> eyre::Result<(ConnectParams, Child)> {
-        self.inner.connect(config, cli_path)
+        self.inner.connect(config, cli_path).await
     }
 }
 
@@ -33,13 +33,13 @@ impl CliSession {
 struct InnerCliSession {}
 
 impl InnerCliSession {
-    pub fn connect(
+    pub async fn connect(
         &self,
         config: &Config,
         cli_path: &PathBuf,
     ) -> eyre::Result<(ConnectParams, Child)> {
         let proc = self.start(config, cli_path)?;
-        let params = self.get_conn(proc)?;
+        let params = self.get_conn(proc).await?;
         Ok(params)
     }
 
@@ -70,7 +70,7 @@ impl InnerCliSession {
         return Ok(proc);
     }
 
-    fn get_conn(
+    async fn get_conn(
         &self,
         mut proc: std::process::Child,
     ) -> eyre::Result<(ConnectParams, std::process::Child)> {
@@ -84,14 +84,14 @@ impl InnerCliSession {
             .take()
             .ok_or(eyre::anyhow!("could not acquire stderr from child process"))?;
 
-        let (sender, receiver) = sync_channel(1);
+        let (sender, mut receiver) = tokio::sync::mpsc::channel(1);
 
-        std::thread::spawn(move || {
+        tokio::spawn(async move {
             let stdout_bufr = BufReader::new(stdout);
             for line in stdout_bufr.lines() {
                 let out = line.as_ref().unwrap();
                 if let Ok(conn) = serde_json::from_str::<ConnectParams>(&out) {
-                    sender.send(conn).unwrap();
+                    sender.send(conn).await.unwrap();
                 }
                 if let Ok(line) = line {
                     println!("dagger: {}", line);
@@ -99,7 +99,7 @@ impl InnerCliSession {
             }
         });
 
-        std::thread::spawn(|| {
+        tokio::spawn(async move {
             let stderr_bufr = BufReader::new(stderr);
             for line in stderr_bufr.lines() {
                 if let Ok(line) = line {
@@ -109,7 +109,7 @@ impl InnerCliSession {
             }
         });
 
-        let conn = receiver.recv()?;
+        let conn = receiver.recv().await.ok_or(eyre::anyhow!("could not receive ok signal from dagger-engine"))?;
 
         Ok((conn, proc))
     }