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Adaptive rate limit, only available for linux systems.
import (
rl "gitee.com/yzsunjianguo/sponge/pkg/shield/ratelimit"
)
func RateLimit(opts ...RateLimitOption) gin.HandlerFunc {
o := defaultRatelimitOptions()
o.apply(opts...)
limiter := rl.NewLimiter(
rl.WithWindow(o.window),
rl.WithBucket(o.bucket),
rl.WithCPUThreshold(o.cpuThreshold),
rl.WithCPUQuota(o.cpuQuota),
)
return func(c *gin.Context) {
done, err := limiter.Allow()
if err != nil {
response.Output(c, http.StatusTooManyRequests, err.Error())
c.Abort()
return
}
c.Next()
done(rl.DoneInfo{Err: c.Request.Context().Err()})
}
}
import (
rl "gitee.com/yzsunjianguo/sponge/pkg/shield/ratelimit"
)
func UnaryServerRateLimit(opts ...RatelimitOption) grpc.UnaryServerInterceptor {
o := defaultRatelimitOptions()
o.apply(opts...)
limiter := rl.NewLimiter(
rl.WithWindow(o.window),
rl.WithBucket(o.bucket),
rl.WithCPUThreshold(o.cpuThreshold),
rl.WithCPUQuota(o.cpuQuota),
)
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
done, err := limiter.Allow()
if err != nil {
return nil, errcode.StatusLimitExceed.ToRPCErr(err.Error())
}
reply, err := handler(ctx, req)
done(rl.DoneInfo{Err: err})
return reply, err
}
}
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