coredns/middleware/loadbalance/handler.go
Miek Gieben b167411bba Add roundrobin middleware
This middleware allows you to round robin a/aaaa records in a reply and
maybe more in the future (i.e.) sort a packet?
2016-03-23 21:38:35 +00:00

19 lines
569 B
Go

// Package loadbalance is middleware for rewriting responses to do "load balancing"
package loadbalance
import (
"github.com/miekg/coredns/middleware"
"github.com/miekg/dns"
"golang.org/x/net/context"
)
// RoundRobin is middleware to rewrite responses for "load balancing".
type RoundRobin struct {
Next middleware.Handler
}
// ServeHTTP implements the middleware.Handler interface.
func (rr RoundRobin) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {
wrr := NewRoundRobinResponseWriter(w)
return rr.Next.ServeDNS(ctx, wrr, r)
}