rrl

Documentation

Index

• Variables
• type RRL
  • func (rrl *RRL) Name() string
  • func (rrl *RRL) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error)
• type ResponseAccount

Variables

var (
	RequestsExceeded = promauto.NewCounterVec(prometheus.CounterOpts{
		Namespace: plugin.Namespace,
		Subsystem: "rrl",
		Name:      "requests_exceeded_total",
		Help:      "Counter of requests exceeding QPS limit.",
	}, []string{"client_ip"})

	ResponsesExceeded = promauto.NewCounterVec(prometheus.CounterOpts{
		Namespace: plugin.Namespace,
		Subsystem: "rrl",
		Name:      "responses_exceeded_total",
		Help:      "Counter of responses exceeding QPS limit.",
	}, []string{"client_ip"})
)

Variables declared for monitoring.

Types

type RRL

type RRL struct {
	Next  plugin.Handler
	Zones []string
	// contains filtered or unexported fields
}

RRL performs response rate limiting

func (*RRL) Name

func (rrl *RRL) Name() string

Name implements the Handler interface.

func (*RRL) ServeDNS

func (rrl *RRL) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error)

ServeDNS implements the Handler interface.

type ResponseAccount

type ResponseAccount struct {
	// contains filtered or unexported fields
}

ResponseAccount holds accounting for a category of response Next response is allowed if current time >= allowTime