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package dnstap
import (
"fmt"
"log"
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/middleware"
"github.com/coredns/coredns/middleware/dnstap/out"
"github.com/mholt/caddy"
"github.com/mholt/caddy/caddyfile"
)
func init() {
caddy.RegisterPlugin("dnstap", caddy.Plugin{
ServerType: "dns",
Action: wrapSetup,
})
}
func wrapSetup(c *caddy.Controller) error {
if err := setup(c); err != nil {
return middleware.Error("dnstap", err)
}
return nil
}
func parseConfig(c *caddyfile.Dispenser) (path string, full bool, err error) {
c.Next() // directive name
if !c.Args(&path) {
err = c.ArgErr()
return
}
full = c.NextArg() && c.Val() == "full"
return
}
func setup(c *caddy.Controller) error {
path, full, err := parseConfig(&c.Dispenser)
if err != nil {
return err
}
dnstap := Dnstap{Pack: full}
o, err := out.NewSocket(path)
if err != nil {
log.Printf("[WARN] Can't connect to %s at the moment", path)
}
dnstap.Out = o
c.OnShutdown(func() error {
if err := o.Close(); err != nil {
return fmt.Errorf("output: %s", err)
}
return nil
})
dnsserver.GetConfig(c).AddMiddleware(
func(next middleware.Handler) middleware.Handler {
dnstap.Next = next
return dnstap
})
return nil
}
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