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package ready
import (
"net"
"github.com/coredns/caddy"
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/plugin"
)
func init() { plugin.Register("ready", setup) }
func setup(c *caddy.Controller) error {
addr, err := parse(c)
if err != nil {
return plugin.Error("ready", err)
}
rd := &ready{Addr: addr}
uniqAddr.Set(addr, rd.onStartup)
c.OnStartup(func() error { uniqAddr.Set(addr, rd.onStartup); return nil })
c.OnRestartFailed(func() error { uniqAddr.Set(addr, rd.onStartup); return nil })
c.OnStartup(func() error { return uniqAddr.ForEach() })
c.OnRestartFailed(func() error { return uniqAddr.ForEach() })
c.OnStartup(func() error {
for _, p := range dnsserver.GetConfig(c).Handlers() {
if r, ok := p.(Readiness); ok {
plugins.Append(r, p.Name())
}
}
return nil
})
c.OnRestartFailed(func() error {
for _, p := range dnsserver.GetConfig(c).Handlers() {
if r, ok := p.(Readiness); ok {
plugins.Append(r, p.Name())
}
}
return nil
})
c.OnRestart(rd.onFinalShutdown)
c.OnFinalShutdown(rd.onFinalShutdown)
return nil
}
func parse(c *caddy.Controller) (string, error) {
addr := ":8181"
i := 0
for c.Next() {
if i > 0 {
return "", plugin.ErrOnce
}
i++
args := c.RemainingArgs()
switch len(args) {
case 0:
case 1:
addr = args[0]
if _, _, e := net.SplitHostPort(addr); e != nil {
return "", e
}
default:
return "", c.ArgErr()
}
}
return addr, nil
}
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