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use std::{collections::HashMap, panic};
use tokio::{spawn, sync::mpsc::unbounded_channel};
use crate::{
callback::{Callback, CallbackInfo, CallbackType},
handler::{builder::Builder, HandleError, Handler},
register::RegisterType,
};
impl Handler {
pub async fn handle_async(self) -> Result<(), HandleError> {
let Builder {
callbacks,
registers,
} = self.builder;
let (register_tx, mut register_rx) = unbounded_channel::<RegisterType>();
let _sig_id_map = registers
.register(register_tx)
.map_err(HandleError::RegisterFailed)?;
let mut initialized_cb = None;
let mut wait_for_stop_cb = None;
let mut callback_tx_map = HashMap::new();
let mut callback_join_handle_map = HashMap::new();
for (tp, cb) in callbacks.into_inner() {
match tp {
CallbackType::Initialized => {
initialized_cb = Some(cb);
continue;
}
CallbackType::ReloadConfig => {}
CallbackType::WaitForStop => {
wait_for_stop_cb = Some(cb);
continue;
}
CallbackType::PrintStats => {}
}
let (tx, mut rx) = unbounded_channel::<CallbackInfo>();
let join_handle = spawn(async move {
let mut latest_finish_time = None;
#[allow(clippy::while_let_loop)]
loop {
match rx.recv().await {
Some(info) => {
if let Some(latest_finish_time) = latest_finish_time {
if latest_finish_time > *info.time() {
continue;
}
}
match &cb {
Callback::Sync(cb) => cb(info),
Callback::Async(cb) => cb(info).await,
}
latest_finish_time = Some(CallbackInfo::time_now());
}
None => {
break;
}
}
}
});
callback_tx_map.insert(tp, tx);
callback_join_handle_map.insert(tp, join_handle);
}
if let Some(cb) = initialized_cb {
match &cb {
Callback::Sync(cb) => cb(CallbackInfo::new()),
Callback::Async(cb) => cb(CallbackInfo::new()).await,
}
}
loop {
match register_rx.recv().await {
#[cfg(not(windows))]
Some(RegisterType::ReloadConfig) => {
if let Some(tx_callback) = callback_tx_map.get(&CallbackType::ReloadConfig) {
#[allow(clippy::single_match)]
match tx_callback.send(CallbackInfo::new()) {
Ok(_) => {}
Err(_) => {
}
}
}
continue;
}
Some(RegisterType::WaitForStop) => {
if let Some(cb) = wait_for_stop_cb {
match &cb {
Callback::Sync(cb) => cb(CallbackInfo::new()),
Callback::Async(cb) => cb(CallbackInfo::new()).await,
}
}
drop(register_rx);
break;
}
#[cfg(not(windows))]
Some(RegisterType::PrintStats) => {
if let Some(tx_callback) = callback_tx_map.get(&CallbackType::PrintStats) {
#[allow(clippy::single_match)]
match tx_callback.send(CallbackInfo::new()) {
Ok(_) => {}
Err(_) => {
}
}
}
continue;
}
None => break,
}
}
for (_, tx) in callback_tx_map {
drop(tx);
}
for (_, join_handle) in callback_join_handle_map {
match join_handle.await {
Ok(_) => {}
Err(err) => {
if let Ok(err) = err.try_into_panic() {
panic::resume_unwind(err);
}
}
}
}
Ok(())
}
}