115 lines
2.8 KiB
Rust
115 lines
2.8 KiB
Rust
use std::{
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collections::HashMap,
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sync::Arc,
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time::{Duration, Instant},
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};
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use tokio::{sync::RwLock, time::interval};
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#[derive(Debug, Clone)]
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pub struct RateLimitConfig {
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pub requests_per_window: u32,
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pub window_duration: Duration,
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}
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impl Default for RateLimitConfig {
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fn default() -> Self {
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Self {
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requests_per_window: 100,
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window_duration: Duration::from_secs(60),
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}
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}
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}
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#[derive(Debug)]
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struct RateLimitState {
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count: u32,
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reset_time: Instant,
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}
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#[derive(Debug, Clone)]
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pub struct RateLimiter {
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limits: Arc<RwLock<HashMap<String, RateLimitState>>>,
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config: RateLimitConfig,
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}
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impl RateLimiter {
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pub fn new(config: RateLimitConfig) -> Self {
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Self {
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limits: Arc::new(RwLock::new(HashMap::new())),
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config,
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}
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}
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pub async fn is_allowed(&self, key: &str) -> bool {
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let now = Instant::now();
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let mut limits = self.limits.write().await;
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let state =
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limits
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.entry(key.to_string())
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.or_insert_with(|| RateLimitState {
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count: 0,
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reset_time: now + self.config.window_duration,
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});
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if now >= state.reset_time {
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state.count = 0;
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state.reset_time = now + self.config.window_duration;
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}
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if state.count >= self.config.requests_per_window {
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return false;
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}
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state.count += 1;
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true
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}
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pub fn start_cleanup(self: Arc<Self>) -> tokio::task::JoinHandle<()> {
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tokio::spawn(async move {
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let mut ticker = interval(Duration::from_secs(300));
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loop {
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ticker.tick().await;
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let now = Instant::now();
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let mut limits = self.limits.write().await;
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limits.retain(|_, state| now < state.reset_time);
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}
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})
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}
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}
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pub struct SshRateLimiter {
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limiter: RateLimiter,
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}
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impl SshRateLimiter {
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pub fn new() -> Self {
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Self {
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limiter: RateLimiter::new(RateLimitConfig::default()),
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}
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}
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pub async fn is_user_allowed(&self, user_id: &str) -> bool {
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self.limiter.is_allowed(&format!("user:{}", user_id)).await
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}
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pub async fn is_ip_allowed(&self, ip_address: &str) -> bool {
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self.limiter.is_allowed(&format!("ip:{}", ip_address)).await
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}
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pub async fn is_repo_access_allowed(
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&self,
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user_id: &str,
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repo_path: &str,
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) -> bool {
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self.limiter
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.is_allowed(&format!("repo_access:{}:{}", user_id, repo_path))
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.await
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}
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pub fn start_cleanup(self: Arc<Self>) -> tokio::task::JoinHandle<()> {
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RateLimiter::start_cleanup(Arc::new(self.limiter.clone()))
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}
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}
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