30 lines
818 B
Rust
30 lines
818 B
Rust
use std::{collections::HashMap, net::SocketAddr, sync::Arc};
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use tokio::net::TcpStream;
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use tokio::sync::Mutex;
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#[derive(Clone)]
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pub struct ConnectionPool {
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pool: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<TcpStream>>>>>,
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}
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impl ConnectionPool {
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pub fn new(size: usize) -> Self {
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Self {
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pool: Arc::new(Mutex::new(HashMap::with_capacity(size))),
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}
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}
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pub async fn get_or_init(&self, addr: &SocketAddr) -> std::io::Result<Arc<Mutex<TcpStream>>> {
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let mut pool = self.pool.lock().await;
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match pool.get(addr).cloned() {
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Some(tcp) => Ok(tcp),
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None => {
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let tcp = Arc::new(Mutex::new(TcpStream::connect(addr).await?));
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pool.insert(*addr, tcp.clone());
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Ok(tcp)
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}
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}
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}
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}
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