Add bb8-async-ssh2-lite

Author: vkill

Cargo.toml

@@ -1,5 +1,9 @@
 [workspace]
 members = [
+    # 
     "async-ssh2-lite",
     "async-ssh2-lite/demos/*",
+    # 
+    "bb8-async-ssh2-lite",
+    "bb8-async-ssh2-lite/demo"
 ]

bb8-async-ssh2-lite/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "bb8-async-ssh2-lite"
+version = "0.1.0"
+edition = "2021"
+
+[features]
+default = ["tokio"]
+
+tokio = ["async-ssh2-lite/tokio"]
+
+[dependencies]
+async-ssh2-lite = { version = "0.4", default-features = false, path = "../async-ssh2-lite" }
+
+bb8 = { version = "0.8", default-features = false }
+async-trait = { version = "0.1", default-features = false }

bb8-async-ssh2-lite/demo/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "bb8-async-ssh2-lite-demo"
+version = "0.1.0"
+edition = "2021"
+
+[[bin]]
+name = "bb8_asl_demo_tokio_tcp_stream"
+path = "src/tokio_tcp_stream.rs"
+
+[dependencies]
+bb8-async-ssh2-lite = { path = "..", features = ["tokio"] }
+
+tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
+futures-util = { version = "0.3" }

bb8-async-ssh2-lite/demo/src/tokio_tcp_stream.rs

@@ -0,0 +1,48 @@
+/*
+RUST_BACKTRACE=1 RUST_LOG=trace cargo run -p bb8-async-ssh2-lite-demo --bin bb8_asl_demo_tokio_tcp_stream -- 127.0.0.1:22 root
+*/
+
+use std::env;
+
+use bb8_async_ssh2_lite::{bb8, AsyncSessionManagerWithTokioTcpStream, AsyncSessionUserauthType};
+use futures_util::{future::join_all, AsyncReadExt as _};
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let socket_addr = env::args().nth(1).ok_or("socket_addr missing")?.parse()?;
+    let username = env::args().nth(2).ok_or("username missing")?;
+
+    let mgr = AsyncSessionManagerWithTokioTcpStream::new(
+        socket_addr,
+        None,
+        username,
+        AsyncSessionUserauthType::Agent,
+    );
+
+    let pool = bb8::Pool::builder().build(mgr).await?;
+
+    let mut handles = vec![];
+    for i in 0..10 {
+        let pool = pool.clone();
+        let handle = tokio::spawn(async move {
+            let session = pool.get().await?;
+
+            let mut channel = session.channel_session().await?;
+            channel.exec("hostname").await?;
+            let mut s = String::new();
+            channel.read_to_string(&mut s).await?;
+            println!("exec hostname output:{s} i:{i}");
+            channel.close().await?;
+            println!("exec hostname exit_status:{} i:{i}", channel.exit_status()?);
+
+            Result::<(), Box<dyn std::error::Error + Send + Sync>>::Ok(())
+        });
+        handles.push(handle);
+    }
+
+    let rets = join_all(handles).await;
+    println!("rets:{rets:?}");
+    assert!(rets.iter().all(|x| x.is_ok()));
+
+    Ok(())
+}

bb8-async-ssh2-lite/src/impl_tokio.rs

@@ -0,0 +1,96 @@
+use std::net::SocketAddr;
+
+use async_ssh2_lite::{AsyncSession, SessionConfiguration, TokioTcpStream};
+use async_trait::async_trait;
+
+use crate::{AsyncSessionManagerError, AsyncSessionUserauthType};
+
+//
+#[derive(Debug, Clone)]
+pub struct AsyncSessionManagerWithTokioTcpStream {
+    socket_addr: SocketAddr,
+    configuration: Option<SessionConfiguration>,
+    username: String,
+    userauth_type: AsyncSessionUserauthType,
+}
+
+impl AsyncSessionManagerWithTokioTcpStream {
+    pub fn new(
+        socket_addr: SocketAddr,
+        configuration: impl Into<Option<SessionConfiguration>>,
+        username: impl AsRef<str>,
+        userauth_type: AsyncSessionUserauthType,
+    ) -> Self {
+        Self {
+            socket_addr: socket_addr.into(),
+            configuration: configuration.into(),
+            username: username.as_ref().into(),
+            userauth_type,
+        }
+    }
+}
+
+#[async_trait]
+impl bb8::ManageConnection for AsyncSessionManagerWithTokioTcpStream {
+    type Connection = AsyncSession<TokioTcpStream>;
+
+    type Error = AsyncSessionManagerError;
+
+    async fn connect(&self) -> Result<Self::Connection, Self::Error> {
+        let mut session = AsyncSession::<TokioTcpStream>::connect(
+            self.socket_addr,
+            self.configuration.to_owned(),
+        )
+        .await
+        .map_err(AsyncSessionManagerError::ConnectError)?;
+
+        session
+            .handshake()
+            .await
+            .map_err(AsyncSessionManagerError::HandshakeError)?;
+
+        match &self.userauth_type {
+            AsyncSessionUserauthType::Password { password } => {
+                session
+                    .userauth_password(&self.username, password)
+                    .await
+                    .map_err(AsyncSessionManagerError::UserauthError)?;
+            }
+            AsyncSessionUserauthType::Agent => {
+                session
+                    .userauth_agent(&self.username)
+                    .await
+                    .map_err(AsyncSessionManagerError::UserauthError)?;
+            }
+            AsyncSessionUserauthType::PubkeyFile {
+                pubkey,
+                privatekey,
+                passphrase,
+            } => {
+                session
+                    .userauth_pubkey_file(
+                        &self.username,
+                        pubkey.as_deref(),
+                        privatekey,
+                        passphrase.as_deref(),
+                    )
+                    .await
+                    .map_err(AsyncSessionManagerError::UserauthError)?;
+            }
+        }
+
+        if session.authenticated() {
+            return Err(AsyncSessionManagerError::AssertAuthenticated);
+        }
+
+        Ok(session)
+    }
+
+    async fn is_valid(&self, _conn: &mut Self::Connection) -> Result<(), Self::Error> {
+        Ok(())
+    }
+
+    fn has_broken(&self, _conn: &mut Self::Connection) -> bool {
+        false
+    }
+}

bb8-async-ssh2-lite/src/lib.rs

@@ -0,0 +1,37 @@
+pub use async_ssh2_lite;
+pub use bb8;
+
+#[cfg(feature = "tokio")]
+mod impl_tokio;
+#[cfg(feature = "tokio")]
+pub use impl_tokio::AsyncSessionManagerWithTokioTcpStream;
+
+use std::path::PathBuf;
+
+//
+#[derive(Debug, Clone)]
+pub enum AsyncSessionUserauthType {
+    Password {
+        password: String,
+    },
+    Agent,
+    PubkeyFile {
+        pubkey: Option<PathBuf>,
+        privatekey: PathBuf,
+        passphrase: Option<String>,
+    },
+}
+
+#[derive(Debug)]
+pub enum AsyncSessionManagerError {
+    ConnectError(async_ssh2_lite::Error),
+    HandshakeError(async_ssh2_lite::Error),
+    UserauthError(async_ssh2_lite::Error),
+    AssertAuthenticated,
+}
+impl core::fmt::Display for AsyncSessionManagerError {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        write!(f, "{self:?}")
+    }
+}
+impl std::error::Error for AsyncSessionManagerError {}