diff options
Diffstat (limited to 'ratelimiter')
| -rw-r--r-- | ratelimiter/ratelimiter.go | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/ratelimiter/ratelimiter.go b/ratelimiter/ratelimiter.go index 95b547e..5a844da 100644 --- a/ratelimiter/ratelimiter.go +++ b/ratelimiter/ratelimiter.go @@ -27,7 +27,7 @@ type RatelimiterEntry struct { type Ratelimiter struct { mutex sync.RWMutex - stop chan struct{} + stopReset chan struct{} tableIPv4 map[[net.IPv4len]byte]*RatelimiterEntry tableIPv6 map[[net.IPv6len]byte]*RatelimiterEntry } @@ -36,8 +36,8 @@ func (rate *Ratelimiter) Close() { rate.mutex.Lock() defer rate.mutex.Unlock() - if rate.stop != nil { - close(rate.stop) + if rate.stopReset != nil { + close(rate.stopReset) } } @@ -47,11 +47,11 @@ func (rate *Ratelimiter) Init() { // stop any ongoing garbage collection routine - if rate.stop != nil { - close(rate.stop) + if rate.stopReset != nil { + close(rate.stopReset) } - rate.stop = make(chan struct{}) + rate.stopReset = make(chan struct{}) rate.tableIPv4 = make(map[[net.IPv4len]byte]*RatelimiterEntry) rate.tableIPv6 = make(map[[net.IPv6len]byte]*RatelimiterEntry) @@ -59,11 +59,16 @@ func (rate *Ratelimiter) Init() { go func() { ticker := time.NewTicker(time.Second) + ticker.Stop() for { select { - case <-rate.stop: + case _, ok := <-rate.stopReset: ticker.Stop() - return + if ok { + ticker = time.NewTicker(time.Second) + } else { + return + } case <-ticker.C: func() { rate.mutex.Lock() @@ -84,6 +89,10 @@ func (rate *Ratelimiter) Init() { } entry.mutex.Unlock() } + + if len(rate.tableIPv4) == 0 && len(rate.tableIPv6) == 0 { + ticker.Stop() + } }() } } @@ -121,8 +130,14 @@ func (rate *Ratelimiter) Allow(ip net.IP) bool { rate.mutex.Lock() if IPv4 != nil { rate.tableIPv4[keyIPv4] = entry + if len(rate.tableIPv4) == 1 && len(rate.tableIPv6) == 0 { + rate.stopReset <- struct{}{} + } } else { rate.tableIPv6[keyIPv6] = entry + if len(rate.tableIPv6) == 1 && len(rate.tableIPv4) == 0 { + rate.stopReset <- struct{}{} + } } rate.mutex.Unlock() return true |