40 lines
577 B
Go
40 lines
577 B
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"github.com/gin-gonic/gin"
|
||
|
|
)
|
||
|
|
|
||
|
|
const reqsPerSecond = 2000
|
||
|
|
const sleepTime = time.Second / reqsPerSecond
|
||
|
|
|
||
|
|
var limiter = make(chan struct{}, reqsPerSecond)
|
||
|
|
|
||
|
|
func setUpLimiter() {
|
||
|
|
for i := 0; i < 2000; i++ {
|
||
|
|
limiter <- struct{}{}
|
||
|
|
}
|
||
|
|
go func() {
|
||
|
|
for {
|
||
|
|
limiter <- struct{}{}
|
||
|
|
time.Sleep(sleepTime)
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
}
|
||
|
|
|
||
|
|
func rateLimiter(onAnonymousOnly bool) func(c *gin.Context) {
|
||
|
|
return func(c *gin.Context) {
|
||
|
|
if onAnonymousOnly {
|
||
|
|
ctx := getContext(c)
|
||
|
|
if ctx.User.ID == 0 {
|
||
|
|
<-limiter
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
<-limiter
|
||
|
|
}
|
||
|
|
|
||
|
|
c.Next()
|
||
|
|
}
|
||
|
|
}
|