1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
use std::{
net::SocketAddr,
path::PathBuf,
sync::Arc,
time::{Duration, Instant},
};
use action_system::{action::ActionContext, action_pool::ActionPool};
use cfg_file::config::ConfigFile;
use log::{error, info, warn};
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?;
// Lock the vault
vault.lock().map_err(|e| {
error!("{}", e);
TcpTargetError::Locked(e.to_string())
})?;
// 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
// Unlock the vault
vault.unlock()?;
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 with rapid exit detection
let shutdown_tx_clone = shutdown_tx.clone();
spawn(async move {
let mut ctrl_c_count = 0;
let mut last_ctrl_c_time = Instant::now();
while let Ok(()) = signal::ctrl_c().await {
let now = Instant::now();
// Reset counter if more than 5 seconds have passed
if now.duration_since(last_ctrl_c_time) > Duration::from_secs(5) {
ctrl_c_count = 0;
}
ctrl_c_count += 1;
last_ctrl_c_time = now;
let _ = shutdown_tx_clone.send(()).await;
// If 3 Ctrl+C within 5 seconds, exit immediately
if ctrl_c_count >= 3 {
info!("Shutdown. (3/3)");
std::process::exit(0);
} else {
info!("Ctrl + C to force shutdown. ({} / 3)", ctrl_c_count);
}
}
});
let future = async move {
loop {
select! {
// Accept new connections
accept_result = listener.accept(), if !shutdown_requested => {
match accept_result {
Ok((stream, _addr)) => {
info!("New connection. (now {})", active_connections);
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;
info!("A connection closed. (now {})", active_connections);
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 {
info!("No active connections. Shutting down.");
break;
} else {
warn!("Cannot shutdown while active connections exist! ({} active)", active_connections);
}
}
}
}
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 msg = match instance.read_msgpack::<RemoteActionInvoke>().await {
Ok(msg) => msg,
Err(e) => {
error!("Failed to read action message: {}", e);
return;
}
};
// Build context
let ctx: ActionContext = ActionContext::remote().insert_instance(instance);
// Insert vault into context
let ctx = ctx.with_arc_data(vault);
info!(
"Process action `{}` with argument `{}`",
msg.action_name, msg.action_args_json
);
// Process action
let result = action_pool
.process_json(&msg.action_name, ctx, msg.action_args_json)
.await;
match result {
Ok(_result_json) => {}
Err(e) => {
warn!("Failed to process action `{}`: {}", msg.action_name, e);
}
}
}
|
