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package loadbalance
import (
"fmt"
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/plugin"
clog "github.com/coredns/coredns/plugin/pkg/log"
"github.com/mholt/caddy"
)
var log = clog.NewWithPlugin("loadbalance")
func init() {
caddy.RegisterPlugin("loadbalance", caddy.Plugin{
ServerType: "dns",
Action: setup,
})
}
func setup(c *caddy.Controller) error {
err := parse(c)
if err != nil {
return plugin.Error("loadbalance", err)
}
dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
return RoundRobin{Next: next}
})
return nil
}
func parse(c *caddy.Controller) error {
for c.Next() {
args := c.RemainingArgs()
switch len(args) {
case 0:
return nil
case 1:
if args[0] != "round_robin" {
return fmt.Errorf("unknown policy: %s", args[0])
}
return nil
}
}
return c.ArgErr()
}
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