coredns/plugin/dnstap/setup.go
Yong Tang f8bba51f84
Update Caddy to 1.0.1, and update import path (#2961)
* Update Caddy to 1.0.1, and update import path

This fix updates caddy to 1.0.1 and also
updates the import path to github.com/caddyserver/caddy

This fix fixes 2959

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Also update plugin.cfg

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update and bump zplugin.go

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
2019-07-03 09:04:47 +08:00

96 lines
1.7 KiB
Go

package dnstap
import (
"strings"
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/plugin"
"github.com/coredns/coredns/plugin/dnstap/dnstapio"
clog "github.com/coredns/coredns/plugin/pkg/log"
"github.com/coredns/coredns/plugin/pkg/parse"
"github.com/caddyserver/caddy"
"github.com/caddyserver/caddy/caddyfile"
)
var log = clog.NewWithPlugin("dnstap")
func init() {
caddy.RegisterPlugin("dnstap", caddy.Plugin{
ServerType: "dns",
Action: wrapSetup,
})
}
func wrapSetup(c *caddy.Controller) error {
if err := setup(c); err != nil {
return plugin.Error("dnstap", err)
}
return nil
}
type config struct {
target string
socket bool
full bool
}
func parseConfig(d *caddyfile.Dispenser) (c config, err error) {
d.Next() // directive name
if !d.Args(&c.target) {
return c, d.ArgErr()
}
if strings.HasPrefix(c.target, "tcp://") {
// remote IP endpoint
servers, err := parse.HostPortOrFile(c.target[6:])
if err != nil {
return c, d.ArgErr()
}
c.target = servers[0]
} else {
// default to UNIX socket
if strings.HasPrefix(c.target, "unix://") {
c.target = c.target[7:]
}
c.socket = true
}
c.full = d.NextArg() && d.Val() == "full"
return
}
func setup(c *caddy.Controller) error {
conf, err := parseConfig(&c.Dispenser)
if err != nil {
return err
}
dio := dnstapio.New(conf.target, conf.socket)
dnstap := Dnstap{IO: dio, JoinRawMessage: conf.full}
c.OnStartup(func() error {
dio.Connect()
return nil
})
c.OnRestart(func() error {
dio.Close()
return nil
})
c.OnFinalShutdown(func() error {
dio.Close()
return nil
})
dnsserver.GetConfig(c).AddPlugin(
func(next plugin.Handler) plugin.Handler {
dnstap.Next = next
return dnstap
})
return nil
}