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use std::{net::SocketAddr, path::PathBuf, sync::Arc};
use action_system::{action::ActionContext, action_pool::ActionPool};
use cfg_file::config::ConfigFile;
use tcp_connection::{error::TcpTargetError, instance::ConnectionInstance};
use tokio::{
net::{TcpListener, TcpStream},
select, signal, spawn,
sync::mpsc,
};
use vcs_data::data::vault::{Vault, config::VaultConfig};
use crate::{
connection::protocol::RemoteActionInvoke, registry::server_registry::server_action_pool,
};
// Start the server with a Vault using the specified directory
pub async fn server_entry(vault_path: impl Into<PathBuf>) -> Result<(), TcpTargetError> {
// Read the vault cfg
let vault_cfg = VaultConfig::read().await?;
// Create TCPListener
let listener = create_tcp_listener(&vault_cfg).await?;
// Initialize the vault
let vault: Arc<Vault> = init_vault(vault_cfg, vault_path.into()).await?;
// Create ActionPool
let action_pool: Arc<ActionPool> = Arc::new(server_action_pool());
// Start the server
let (_shutdown_rx, future) = build_server_future(vault.clone(), action_pool.clone(), listener);
future.await?; // Start and block until shutdown
Ok(())
}
async fn create_tcp_listener(cfg: &VaultConfig) -> Result<TcpListener, TcpTargetError> {
let local_bind_addr = cfg.server_config().local_bind();
let bind_port = cfg.server_config().port();
let sock_addr = SocketAddr::new(*local_bind_addr, bind_port);
let listener = TcpListener::bind(sock_addr).await?;
Ok(listener)
}
async fn init_vault(cfg: VaultConfig, path: PathBuf) -> Result<Arc<Vault>, TcpTargetError> {
// Init and create the vault
let Some(vault) = Vault::init(cfg, path) else {
return Err(TcpTargetError::NotFound("Vault not found".to_string()));
};
let vault: Arc<Vault> = Arc::new(vault);
Ok(vault)
}
fn build_server_future(
vault: Arc<Vault>,
action_pool: Arc<ActionPool>,
listener: TcpListener,
) -> (
mpsc::Sender<()>,
impl std::future::Future<Output = Result<(), TcpTargetError>>,
) {
let (tx, mut rx) = mpsc::channel::<i32>(100);
let (shutdown_tx, mut shutdown_rx) = mpsc::channel::<()>(1);
let mut active_connections = 0;
let mut shutdown_requested = false;
// Spawn task to handle Ctrl+C
let shutdown_tx_clone = shutdown_tx.clone();
spawn(async move {
if let Ok(()) = signal::ctrl_c().await {
let _ = shutdown_tx_clone.send(()).await;
}
});
let future = async move {
loop {
select! {
// Accept new connections
accept_result = listener.accept(), if !shutdown_requested => {
match accept_result {
Ok((stream, _addr)) => {
active_connections += 1;
let _ = tx.send(1).await;
let vault_clone = vault.clone();
let action_pool_clone = action_pool.clone();
let tx_clone = tx.clone();
spawn(async move {
process_connection(stream, vault_clone, action_pool_clone).await;
let _ = tx_clone.send(-1).await;
});
}
Err(_) => {
continue;
}
}
}
// Handle connection count updates
Some(count_change) = rx.recv() => {
active_connections = (active_connections as i32 + count_change) as usize;
// Check if we should shutdown after all connections are done
if shutdown_requested && active_connections == 0 {
break;
}
}
// Handle shutdown signal
_ = shutdown_rx.recv() => {
shutdown_requested = true;
// If no active connections, break immediately
if active_connections == 0 {
break;
}
}
}
}
Ok(())
};
(shutdown_tx, future)
}
async fn process_connection(stream: TcpStream, vault: Arc<Vault>, action_pool: Arc<ActionPool>) {
// Setup connection instance
let mut instance = ConnectionInstance::from(stream);
// Read action name and action arguments
let Ok(msg) = instance.read_msgpack::<RemoteActionInvoke>().await else {
return;
};
// Build context
let ctx: ActionContext = ActionContext::remote().insert_instance(instance);
// Insert vault into context
let ctx = ctx.insert_arc(vault);
// Process action
let Ok(_result_json) = action_pool
.process_json(&msg.action_name, ctx, msg.action_args_json)
.await
else {
return;
};
}
|
