twin/lazymc
1
0
Fork 0
mirror of https://github.com/timvisee/lazymc.git synced 2025-05-19 04:40:22 -07:00
Code Issues Packages Projects Releases Wiki Activity

Add RCON cooldown, do not require active PID to stop server

Browse Source 
This hopefully improves server stopping reliability.
This commit is contained in:
timvisee 2021-11-15 13:39:16 +01:00
parent b71d0d1013
commit 5ffc6ee911
No known key found for this signature in database
GPG Key ID: B8DB720BC383E172
1 changed files with 32 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
src/server.rs
View File

@ -15,6 +15,13 @@ use crate::os;
/// Used to give it some more time to quit forgotten threads, such as for RCON.
const SERVER_QUIT_COOLDOWN: Duration = Duration::from_millis(2500);
/// RCON cooldown. Required period between RCON invocations.
///
/// The Minecraft RCON implementation is very broken and brittle, this is used in the hopes to
/// improve reliability.
#[cfg(feature = "rcon")]
const RCON_COOLDOWN: Duration = Duration::from_secs(15);
/// Server state.
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub enum State {
@ -91,6 +98,10 @@ pub struct Server {
///
/// Used as starting/stopping timeout.
kill_at: RwLock<Option<Instant>>,
/// Last time server was stopped over RCON.
#[cfg(feature = "rcon")]
rcon_last_stop: Mutex<Option<Instant>>,
}
impl Server {
@ -219,16 +230,9 @@ impl Server {
/// Stop running server.
///
/// This requires the server PID to be known.
/// This will attempt to stop the server with all available methods.
#[allow(unused_variables)]
pub async fn stop(&self, config: &Config) -> bool {
// We must have a running process
let has_process = self.pid.lock().unwrap().is_some();
if !has_process {
debug!(target: "lazymc", "Tried to stop server, while no PID is known");
return false;
}
// Try to stop through RCON if started
#[cfg(feature = "rcon")]
if self.state() == State::Started && stop_server_rcon(config, self).await {
@ -337,6 +341,8 @@ impl Default for Server {
last_active: Default::default(),
keep_online_until: Default::default(),
kill_at: Default::default(),
#[cfg(feature = "rcon")]
rcon_last_stop: Default::default(),
}
}
}
@ -419,6 +425,18 @@ async fn stop_server_rcon(config: &Config, server: &Server) -> bool {
return false;
}
// Ensure RCON has cooled down
let rcon_cooled_down = server
.rcon_last_stop
.lock()
.unwrap()
.map(|t| t.elapsed() >= RCON_COOLDOWN)
.unwrap_or(true);
if !rcon_cooled_down {
debug!(target: "lazymc", "Not using RCON to stop server, in cooldown, used too recently");
return false;
}
// RCON address
let mut addr = config.server.address;
addr.set_port(config.rcon.port);
@ -439,8 +457,12 @@ async fn stop_server_rcon(config: &Config, server: &Server) -> bool {
return false;
}
// Set server to stopping state
// TODO: set before stop command, revert state on failure
// Set server to stopping state, update last RCON time
server
.rcon_last_stop
.lock()
.unwrap()
.replace(Instant::now());
server.update_state(State::Stopping, config);
// Gracefully close connection